Variable-frequency excitation sampling acid-base concentration meter

Abstract

The utility model relates to the technical field of acid-base concentration meters, and discloses a variable-frequency excitation sampling acid-base concentration meter which comprises a sampling box and a detector, a suction cover is fixedly arranged at the top of the sampling box, a suction pipe is fixedly arranged at the top of the suction cover, and a variable-frequency magnetic motor is fixedly arranged at the top of the suction pipe. A rotating shaft extending into the suction pipe is fixedly arranged at the output end of the variable-frequency magnetic motor, the lower end of the rotating shaft extends into the suction cover and is fixedly provided with a suction impeller, a drainage pipe is fixedly arranged on the pipe wall of the suction pipe, the detector is fixedly mounted on the pipe wall of the suction pipe, and a plurality of uniformly distributed sampling holes are formed in the bottom of the sampling box. Fixing pipes are fixedly arranged on the peripheral side walls of the sampling box, a connecting pipe is fixedly arranged at one end of each fixing pipe, and a sampling pipe is fixedly arranged at one end of each connecting pipe. According to the utility model, a variable-frequency excitation sampling water body is adopted, the water body sampling speed can be adjusted, the area of the sampled water body is larger, and the accuracy of detecting the pH value of the water body can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of acid and alkali concentration meters, in particular to an acid and alkali concentration meter with variable frequency excitation sampling. Background Art

[0002] The acid-base concentration meter is an online water quality monitor with a microprocessor. It is widely used in thermal power, chemical industry, steel pickling and other industries, such as the regeneration of ion exchange resins in power plants, chemical industry processes, etc., to continuously detect and control the concentration of chemical acids or bases in aqueous solutions.

[0003] Among them, the disclosure (announcement) number: CN219320155U discloses an acid-base-salt concentration meter suitable for multi-point depth measurement, including an operating device, a function key is provided on the lower part of the outer wall of the operating device, a display screen is provided on the upper part of the outer wall of the operating device, a connecting line is fixedly connected to the side wall of the operating device, the connecting line is fixedly connected to the top of the detection device, a clamping plate is provided on the outer side of the upper end of the detection device, an adjustment knob is provided in the middle of the upper end of the detection device, and the bottom end of the adjustment knob is threadedly connected to a threaded hole, and the connection between the device and the detection component is realized through the connecting line.

[0004] The acid-base concentration meter proposed in the above scheme can only detect the pH value of the local water quality. Due to the large volume of the water body, if the local detection will only lead to large errors in the detection results. Therefore, a variable frequency excitation sampling acid-base concentration meter is proposed. Utility Model Content

[0005] The purpose of the utility model is to solve the problem in the prior art that the display module is easily damaged. Once damaged, the staff needs to spend a lot of time to disassemble the display module, which affects the progress of its maintenance. A variable frequency excitation sampling acid-base concentration meter is proposed.

[0006] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0007] A variable frequency excitation sampling acid-base concentration meter comprises a sampling box and a detector, a suction hood is fixedly provided on the top of the sampling box, a suction pipe is fixedly provided on the top of the suction hood, a variable frequency magnetic motor is fixedly provided on the top of the suction pipe, an output end of the variable frequency magnetic motor is fixedly provided with a rotating shaft extending to the inside of the suction pipe, the lower end of the rotating shaft extends to the inside of the suction hood and is fixedly provided with a suction impeller, a drain pipe is fixedly provided on the wall of the suction pipe, the detector is fixedly installed on the wall of the suction pipe, and the detector is located below the drain pipe; a plurality of evenly distributed sampling holes are provided at the bottom of the sampling box, fixed pipes are fixedly provided on the four side walls of the sampling box, a connecting pipe is fixedly provided on the end of the fixed pipe away from the sampling box, a sampling pipe is fixedly provided on the end of the connecting pipe away from the fixed pipe, and an adjustment mechanism is provided between the upper end of the sampling pipe and the side wall of the sampling box.

[0008] Preferably, a sealing assembly is provided between the upper end of the rotating shaft and the upper end of the suction pipe.

[0009] Preferably, a withdrawal slot is provided at the bottom of the sampling box, and the sampling hole is arranged inside the withdrawal slot.

[0010] Preferably, a first filter is fixedly provided at the notch of the withdrawal slot.

[0011] Preferably, the adjustment mechanism includes an adjusting rod, an adjusting block and an adjusting bolt, the adjusting rod is located horizontally above the sampling tube, and one end of the adjusting rod is fixedly connected to the side wall of the sampling box, the adjusting block is slidably set on the rod wall of the adjusting rod, and the bottom of the adjusting block is fixedly connected to the upper end of the sampling tube, the adjusting bolt is threadedly set on the top of the adjusting block, and the end of the adjusting bolt is threadedly connected to the rod wall of the adjusting rod.

[0012] Preferably, the adjusting rod is a square rod, and the side wall of the adjusting block is provided with a square hole matching the rod wall of the adjusting rod.

[0013] Preferably, an anti-falling block is fixedly provided on one end of the adjusting rod away from the sampling box.

[0014] Preferably, the connecting tube is a metal bellows, and a second filter is fixedly provided at the end of the sampling tube.

[0015] Preferably, fixing piles are fixed on both sides of the top of the sampling box, and the lower ends of the fixing piles are provided with a pointed structure.

[0016] Compared with the existing technology, the present invention provides a variable frequency excitation sampling acid-base concentration meter with the following beneficial effects:

[0017] 1. The variable frequency excitation sampling acid-base concentration meter is equipped with a variable frequency magnetic motor, a rotating shaft and a suction impeller. The variable frequency magnetic motor can drive the rotating shaft to rotate when working, and the output power of the variable frequency magnetic motor is adjustable, which can drive the rotating shaft to rotate at different speeds. The rotating shaft can drive the suction impeller to rotate, so that negative pressure is generated inside the sampling box, so that water can be sucked in through the sampling hole, the connecting pipe and the sampling pipe, and then the water is sucked into the inside of the suction hood and the suction pipe, and finally discharged to the outside through the drain pipe. In this process, the detector can detect the pH value of the water body. At the same time, the area of ​​the water body sucked is large, which can improve the detection accuracy of the pH value of the water body.

[0018] 2. The variable frequency excitation sampling acid-base concentration meter is equipped with a fixed tube, a connecting tube and a sampling tube. If the suction range of the water body needs to be adjusted, the sampling tube can be moved to make the connecting tube retractable, thereby adjusting the distance between the sampling tube and the sampling box.

[0019] 3. The variable frequency excitation sampling acid-base concentration meter is equipped with an adjusting rod, an adjusting block and an adjusting bolt. When the spacing of the sampling tubes needs to be adjusted, the adjusting bolt is turned by hand to release the fixation between the adjusting block and the adjusting rod, and then the adjusting block is pushed to move on the adjusting rod, so that the sampling tubes can move horizontally.

[0020] The parts not involved in this device are the same as the existing technology or can be implemented by using the existing technology. The utility model adopts variable frequency excitation to sample water bodies, which can adjust the speed of water sampling, and the sampling area of ​​the water body is large, which can improve the accuracy of the pH detection of the water body. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a structural diagram of a variable frequency excitation sampling acid-base concentration meter proposed by the utility model;

[0022] Figure 2 for Figure 1 Bottom view of the middle sampling box;

[0023] Figure 3 for Figure 1 Side view of the middle adjustment block and adjustment bolt;

[0024] Figure 4 for Figure 1 Top view of the middle adjustment rod and anti-drop stopper;

[0025] Figure 5 for Figure 1 The end view of the sampling tube.

[0026] In the figure: 1. Sampling box; 2. Detector; 3. Suction hood; 4. Suction tube; 5. Variable frequency magnetic motor; 6. Rotating shaft; 7. Suction impeller; 8. Drain pipe; 9. Sampling hole; 10. Fixed pipe; 11. Connecting pipe; 12. Sampling tube; 13. Withdrawal slot; 14. First filter; 15. Adjusting rod; 16. Adjusting block; 17. Adjusting bolt; 18. Anti-falling block; 19. Second filter; 20. Fixing pile. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0028] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0029] Example 1

[0030] Reference Figure 1-2And 5, a variable frequency excitation sampling acid-base concentration meter, comprising a sampling box 1 and a detector 2, a suction hood 3 is fixed on the top of the sampling box 1, a suction pipe 4 is fixed on the top of the suction pipe 4, a variable frequency magnetic motor 5 is fixed on the top of the suction pipe 4, a rotating shaft 6 extending to the inside of the suction pipe 4 is fixed on the output end of the variable frequency magnetic motor 5, a sealing assembly is provided between the upper end of the rotating shaft 6 and the upper end of the suction pipe 4, which can improve the rotational sealing between the rotating shaft 6 and the suction pipe 4, the lower end of the rotating shaft 6 extends to the inside of the suction hood 3 and is fixed with a suction impeller 7, the pipe wall of the suction pipe 4 is fixed with a drain pipe 8, the detector 2 is fixedly installed on the pipe wall of the suction pipe 4, and the detector 2 is located below the drain pipe 8; a plurality of evenly distributed sampling holes 9 are provided at the bottom of the sampling box 1, a withdrawal groove 13 is provided at the bottom of the sampling box 1, and the sampling holes 9 are arranged at the withdrawal groove Inside the loading slot 13, a first filter screen 14 is fixedly provided at the slot of the unloading slot 13. The first filter screen 14 can prevent the sampling hole 9 from being blocked by impurities in the water body. Fixed tubes 10 are fixed on the four side walls of the sampling box 1. A connecting tube 11 is fixed on the end of the fixed tube 10 away from the sampling box 1. The connecting tube 11 adopts a metal bellows. A sampling tube 12 is fixed on the end of the connecting tube 11 away from the fixed tube 10. A second filter screen 19 is fixed on the end of the sampling tube 12. The second filter screen 19 can prevent the sampling tube 12 from being blocked by impurities in the water body. An adjustment mechanism is provided between the upper end of the sampling tube 12 and the side wall of the sampling box 1; if it is necessary to adjust the suction range of the water body, the sampling tube 12 can be moved to make the connecting tube 11 retractable, so that the distance between the sampling tube 12 and the sampling box 1 can be adjusted, and the range of the water body to be sucked can be adjusted.

[0031] When the variable frequency magnetic motor 5 is working, it can drive the rotating shaft 6 to rotate, and the output power of the variable frequency magnetic motor 5 is adjustable, which can drive the rotating shaft 6 to rotate at different speeds. The rotating shaft 6 can drive the suction impeller 7 to rotate, so that a negative pressure is generated inside the sampling box 1, so that the water body can be sucked in through the sampling hole 9, the connecting pipe 11 and the sampling pipe 12, and then the water body is sucked into the inside of the suction hood 3 and the suction pipe 4, and finally discharged to the outside through the drain pipe 8. During this process, the detector 2 can detect the pH value of the water body. At the same time, the area of ​​the water body being sucked is large, which can improve the accuracy of the detection of the pH value of the water body.

[0032] Example 2

[0033] Reference Figure 1 and 3-4, the adjustment mechanism includes an adjustment rod 15, an adjustment block 16 and an adjustment bolt 17. The adjustment rod 15 is located horizontally above the sampling tube 12, and one end of the adjustment rod 15 is fixedly connected to the side wall of the sampling box 1. The adjustment block 16 is slidably set on the rod wall of the adjustment rod 15, and the bottom of the adjustment block 16 is fixedly connected to the upper end of the sampling tube 12. The adjustment bolt 17 is threadedly set on the top of the adjustment block 16, and the end of the adjustment bolt 17 is threadedly connected to the rod wall of the adjustment rod 15. The adjustment bolt 17 is turned by hand to release the fixation between the adjustment block 16 and the adjustment rod 15, and then pushed The movable adjustment block 16 moves on the adjustment rod 15, so that the sampling tube 12 can move horizontally. During the movement of the sampling tube 12, the connecting tube 11 is telescopically deformed. The adjustment rod 15 adopts a square rod, and the side wall of the adjustment block 16 is provided with a square hole that matches the rod wall of the adjustment rod 15. The square structure prevents the adjustment block 16 from rotating on the adjustment rod 15, and the adjustment block 16 can only slide on the adjustment rod 15. An anti-fall-off block 18 is fixed on the end of the adjustment rod 15 away from the sampling box 1. The anti-fall-off block 18 can prevent the adjustment block 16 from falling off from the adjustment rod 15.

[0034] Example 3

[0035] Reference Figure 1 Fixed piles 20 are fixed on both sides of the top of the sampling box 1, and the lower ends of the fixed piles 20 are set with a pointed structure. When the sampling box 1 is placed in the water body, the fixed piles 20 are inserted into the soil, so that the sampling box 1 can be firmly installed on the surface of the water body.

[0036] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A variable frequency excitation sampling acid-base concentration meter, comprising a sampling box (1) and a detector (2), characterized in that: A suction hood (3) is fixedly provided on the top of the sampling box (1), a suction pipe (4) is fixedly provided on the top of the suction hood (3), a variable frequency magnetic motor (5) is fixedly provided on the top of the suction pipe (4), a rotating shaft (6) extending to the inside of the suction pipe (4) is fixedly provided at the output end of the variable frequency magnetic motor (5), a lower end of the rotating shaft (6) extends to the inside of the suction hood (3) and is fixedly provided with a suction impeller (7), a drain pipe (8) is fixedly provided on the wall of the suction pipe (4), and the detector (2) is fixedly installed on the wall of the suction pipe (4), and the detector (2) is located below the drain pipe (8); The bottom of the sampling box (1) is provided with a plurality of evenly distributed sampling holes (9), and the four side walls of the sampling box (1) are all fixedly provided with fixed tubes (10), and the end of the fixed tube (10) away from the sampling box (1) is fixedly provided with a connecting tube (11), and the end of the connecting tube (11) away from the fixed tube (10) is fixedly provided with a sampling tube (12), and an adjustment mechanism is provided between the upper end of the sampling tube (12) and the side wall of the sampling box (1).

2. A variable frequency excitation sampling acid-base concentration meter according to claim 1, characterized in that: A sealing assembly is provided between the upper end of the rotating shaft (6) and the upper end of the suction pipe (4).

3. The variable frequency excitation sampling acid-base concentration meter according to claim 1, characterized in that: The bottom of the sampling box (1) is provided with a withdrawal groove (13), and the sampling hole (9) is arranged inside the withdrawal groove (13).

4. A variable frequency excitation sampling acid-base concentration meter according to claim 3, characterized in that: A first filter screen (14) is fixedly provided at the notch of the withdrawal slot (13).

5. The variable frequency excitation sampling acid-base concentration meter according to claim 1, characterized in that: The adjusting mechanism comprises an adjusting rod (15), an adjusting block (16) and an adjusting bolt (17); the adjusting rod (15) is laterally located above the sampling tube (12), and one end of the adjusting rod (15) is fixedly connected to the side wall of the sampling box (1); the adjusting block (16) is slidably arranged on the rod wall of the adjusting rod (15), and the bottom of the adjusting block (16) is fixedly connected to the upper end of the sampling tube (12); the adjusting bolt (17) is threadedly arranged on the top of the adjusting block (16), and the end of the adjusting bolt (17) is threadedly connected to the rod wall of the adjusting rod (15).

6. The variable frequency excitation sampling acid-base concentration meter according to claim 5, characterized in that: The regulating rod (15) is a square rod, and the side wall of the regulating block (16) is provided with a square hole matching the rod wall of the regulating rod (15).

7. The variable frequency excitation sampling acid-base concentration meter according to claim 5, characterized in that: An anti-falling stopper (18) is fixedly provided at one end of the regulating rod (15) away from the sampling box (1).

8. The variable frequency excitation sampling acid-base concentration meter according to claim 1, characterized in that: The connecting pipe (11) is a metal bellows, and a second filter screen (19) is fixedly provided at the end of the sampling pipe (12).

9. The variable frequency excitation sampling acid-base concentration meter according to claim 1, characterized in that: Fixed piles (20) are fixedly provided on both sides of the top of the sampling box (1), and the lower ends of the fixed piles (20) are provided with a pointed structure.

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