CN117191879A

CN117191879A - Intelligent pH detection device

Info

Publication number: CN117191879A
Application number: CN202311170013.9A
Authority: CN
Inventors: 林功波; 高小平
Original assignee: Fuzhou Planning And Design Institute Group Co ltd
Current assignee: Fuzhou Planning And Design Institute Group Co ltd
Priority date: 2023-09-12
Filing date: 2023-09-12
Publication date: 2023-12-08

Abstract

The invention discloses an intelligent pH detection device, and belongs to the technical field of sewage detection. The intelligent pH detection device comprises a detection cylinder, a sliding plate for fixing the detection cylinder is arranged on a mounting plate in a sliding manner, a supporting frame is arranged above the mounting plate, a moving mechanism is arranged between the supporting frame and a sliding rail, the sliding rail is arranged on a cross beam, and the cross beam is connected with the side wall of an oxidation ditch through a stand column. The pH detector is fixed in the guide cylinder, a lifting mechanism for driving the guide cylinder to lift is arranged in the detection cylinder, and a protection mechanism for protecting an electrode of the pH detector is arranged at the bottom of the detection cylinder; the protection mechanism comprises a plurality of fan-shaped baffles, the circular structure formed by assembling the baffles is blocked at the outlet of the bottom of the detection cylinder, and a sliding structure for driving the baffles to slide in the detection cylinder is arranged in the detection cylinder. The intelligent pH detection device can be used for comprehensively detecting the pH of the oxidation ditch of sewage treatment, and the detection precision is improved.

Description

Intelligent pH detection device

Technical Field

The invention relates to the technical field of sewage detection, in particular to an intelligent pH detection device.

Background

In the sewage treatment process, the detection of the pH value is an important parameter, the pH measurement is used for detecting the sewage quality, the pH value can influence the living environment of microorganisms in activated sludge, and unstable phenomena such as coagulation, air floatation, adsorption, electrochemistry and the like are caused in the sewage treatment. Therefore, the pH value of the sewage is detected at any time in the sewage treatment process.

The existing sewage pH value detection is carried out by adopting pH test paper, the sewage is dropped on the pH test paper, then the colors of the pH test paper are manually observed and compared, and finally the pH value of the sewage is determined. The pH detection method is simple, but the color of the pH test paper is greatly influenced by the environment and light, and has larger error, so that the pH value of the sewage can not be accurately detected.

The pH detector is a digital display pH detection device, which is characterized in that a pH detection electrode is inserted into sewage, and the pH detection electrode is converted into a pH unit value for display through a ammeter by utilizing the linear relation between the pH value of a solution to be detected and the potential of a working battery according to the point difference measured in the solution by a working electrode battery consisting of a measurement electrode and a reference electrode. The pH value detector can intuitively see the pH value of sewage. However, existing pH detectors require manual placement in the liquid to be detected. For the oxidation ditch of sewage treatment, the area of the oxidation ditch is very big, and manual detection is comparatively big on the one hand in intensity of labour, and on the other hand manual detection also has certain danger to can only detect the quality of water at oxidation ditch edge, the precision ratio of detection is lower.

Disclosure of Invention

The invention aims to provide an intelligent pH detection device which can comprehensively detect the pH of an oxidation ditch of sewage treatment and improve detection precision.

In order to achieve the above purpose, the invention provides an intelligent pH detection device, which comprises a detection cylinder, wherein a sliding plate for fixing the detection cylinder is arranged on a mounting plate in a sliding way, a support frame is arranged above the mounting plate, a moving mechanism for driving the support frame to move on the sliding rail is arranged between the support frame and the sliding rail, the sliding rail is arranged on a cross beam, the cross beam is connected with the side wall of an oxidation ditch through a stand column, and a controller is arranged on the support frame; the pH detector is fixed in the guide cylinder, the pH detector and the detection cylinder are coaxially arranged, a lifting mechanism driving the guide cylinder to lift is arranged in the detection cylinder, and a protection mechanism for protecting an electrode of the pH detector is arranged at the bottom of the detection cylinder; the protection mechanism comprises a plurality of fan-shaped baffles, the circular structure formed by assembling the baffles is blocked at the outlet of the bottom of the detection cylinder, and a sliding structure for driving the baffles to slide in the detection cylinder is arranged in the detection cylinder.

Preferably, the screw rod is rotatably arranged on the mounting plate, the fixing plate is arranged on the mounting plate, the second motor for driving the screw rod to rotate is arranged on the fixing plate, and the transmission nut matched with the screw rod is arranged on the sliding plate.

Preferably, the mounting plate is provided with a vertical guide rail, the sliding plate is provided with a guide groove matched with the guide rail, and the guide rail is parallel to the screw rod and positioned on two sides of the screw rod.

Preferably, the moving mechanism comprises a first rotating shaft, the first rotating shaft is rotationally connected with the supporting frame, a first motor for driving the first rotating shaft to rotate is arranged on the supporting frame, a first gear is arranged on the first rotating shaft, and the first gear is meshed with a first rack arranged at the bottom of the sliding rail for transmission.

Preferably, grooves are formed in two sides of the sliding rail, rollers are rotatably arranged on two sides of the top of the supporting frame, and the rollers are located in the grooves and roll in the grooves.

Preferably, a guide plate is arranged at the top of the guide cylinder, sliding blocks are arranged at two ends of the guide plate, a vertical sliding groove is arranged on the inner wall of the detection cylinder, and the sliding blocks are positioned in the sliding groove and are in sliding connection with the sliding groove.

Preferably, the elevating system includes meshed second gear and second rack, and the vertical setting of second rack is on the outer wall of guide cylinder, and the second gear sets up in the second pivot, and the both ends of second pivot are rotated with the fixing base of fixing on detecting the section of thick bamboo inner wall and are connected, are provided with the second bevel gear in the second pivot, and the second bevel gear meshes with the first bevel gear that sets up on the transmission shaft, and the inside of detecting the section of thick bamboo is provided with drives transmission shaft pivoted reduction gear, and the third motor is connected with the reduction gear.

Preferably, the sliding structure comprises a driving gear, a driven gear and a third rack, wherein the driving gear is arranged at the bottom end of the transmission shaft, the upper ends of the driving gear and the driven gear are meshed with a gear ring, the gear ring is rotationally connected with the inner wall of the detection cylinder, the lower ends of the driving gear and the driven gear are meshed with the third rack, the third rack is distributed in a circumferential array in the detection cylinder, the third rack is arranged in one-to-one correspondence with the driving rack and the driven gear, one end of the third rack is positioned on the central line of the baffle and connected with the baffle, and a through hole for allowing the other end of the third rack to pass is arranged on the side wall of the detection cylinder; the inside of detecting a section of thick bamboo is provided with the backup pad that supports driven gear, and driven gear's shaft is connected with the backup pad rotation.

Preferably, the ends of the stop blocks, which are close to each other, are provided with water-absorbing flexible blocks.

Preferably, the bottom of detecting the section of thick bamboo is provided with spacing, and spacing is located under the third rack, is provided with the spacing groove with spacing looks adaptation on the lower surface of baffle, and the spacing groove cover is established on spacing and with spacing sliding connection.

The intelligent pH detection device has the advantages and positive effects that:

1. the detection cylinder is arranged on the mounting plate through the sliding plate, the support frame of the mounting plate is in sliding connection with the guide rail, the detection cylinder is horizontally and vertically moved above the oxidation ditch through the first motor and the second motor, and comprehensive detection is carried out on sewage in the oxidation ditch. The lifting detection cylinder can also avoid being soaked in sewage for a long time, so that the corrosion of the sewage to the detection cylinder is reduced, and the service life of the pH detection device is prolonged.

2. The lower part of the detection cylinder is provided with a stop block, the outlet is plugged when the pH detector is retracted to detect, the influence of sewage on the pH detector is reduced, and the detection precision and the service life of the pH detector are improved.

3. The flexible block arranged on the stop block protects the electrode of the pH detector, and avoids electrode damage caused by collision of the electrode to the rigid stop block. The water absorption block arranged on the flexible block can wipe the sewage adhered on the electrode, so that on one hand, the long-term corrosion of the sewage to the electrode is reduced, and the service life of the electrode is prolonged; on the other hand, the influence of the sewage detected last time on the next detection is avoided, and the detection precision is improved.

The technical scheme of the invention is further described in detail through the drawings and the embodiments.

Drawings

FIG. 1 is a schematic diagram of an embodiment of an intelligent pH detection device according to the present invention;

FIG. 2 is a schematic diagram of a detecting cylinder of an embodiment of an intelligent pH detecting device according to the present invention;

FIG. 3 is a schematic diagram of a lifting mechanism of an embodiment of an intelligent pH detection device according to the present invention;

fig. 4 is a schematic structural diagram of a protection mechanism of an embodiment of an intelligent pH detection device according to the present invention.

Reference numerals

1. A column; 2. a cross beam; 3. a slide rail; 4. a support frame; 5. a first motor; 6. a first rotating shaft; 7. a first gear; 8. a first rack; 9. a roller; 10. a mounting plate; 11. a fixing plate; 12. a slide plate; 13. a detection cylinder; 14. a second motor; 15. a screw rod; 16. a guide rail; 17. a guide cylinder; 18. a pH detector; 19. a guide plate; 20. a slide block; 21. a chute; 22. a second rack; 23. a second gear; 24. a first bevel gear; 25. a transmission shaft; 26. a third motor; 27. a speed reducer; 28. a drive gear; 29. a gear ring; 30. a mounting groove; 31. a driven gear; 32. a support plate; 33. a third rack; 34. a baffle; 35. a flexible block; 36. a limit bar; 37. a limit groove; 38. an outlet; 39. a second rotating shaft; 40. a second bevel gear; 41. a fixing seat.

Detailed Description

The technical scheme of the invention is further described below through the attached drawings and the embodiments.

Unless defined otherwise, technical or scientific terms used herein should be given the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs. The terms "first," "second," and the like, as used herein, do not denote any order, quantity, or importance, but rather are used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that elements or items preceding the word are included in the element or item listed after the word and equivalents thereof, but does not exclude other elements or items. The terms "connected" or "connected," and the like, are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", etc. are used merely to indicate relative positional relationships, which may also be changed when the absolute position of the object to be described is changed.

Examples

As shown in fig. 1-4, an intelligent pH detection device includes a detection cylinder 13, where the detection cylinder 13 is vertically fixed on a sliding side. The slide plate 12 is slidably disposed on the mounting plate 10, and the mounting plate 10 is vertically disposed. The mounting plate 10 is rotatably provided with a screw rod 15 through a bearing. The upper part of the mounting plate 10 is fixedly provided with a fixing plate 11, the fixing plate 11 is provided with a through hole for a screw rod 15 to pass through, and the screw rod 15 is rotatably connected with the fixing plate 11 through a bearing. The fixed plate 11 is provided with a second motor 14 for driving the screw rod 15 to rotate. The slide plate 12 is provided with a transmission nut which is matched with the screw rod 15. The mounting plate 10 is provided with a vertical guide rail 16, the slide plate 12 is provided with a guide groove matched with the guide rail 16, and the guide rail 16 is parallel to the screw rod 15 and positioned on two sides of the screw rod 15. To improve the stability of the sliding of the slide plate 12 with the mounting plate 10, the guide rail 16 is provided in a T-shaped or dovetail-shaped configuration. The guide rail 16 and the guide groove have a guiding function for lifting and lowering the detection cylinder 13.

The second motor 14 drives the screw rod 15 to rotate, and the screw rod 15 is meshed with the transmission nut, so that the slide plate 12 drives the detection cylinder 13 to move up and down on the mounting plate 10. The detection cylinder 13 is driven to move up and down through the screw rod 15, so that the sewage is conveniently detected from the lower part of the detection cylinder 13 to the sewage, and the detection cylinder 13 is lifted after detection is finished, so that the detection cylinder 13 is prevented from being soaked in the sewage for a long time and corroded by the sewage.

A supporting frame 4 is arranged above the mounting plate 10, and the supporting frame 4 is fixedly connected with the mounting plate 10 through welding or screws. The slide rail 3 is arranged above the support frame 4, and the slide rail 3 is positioned right above the oxidation ditch. A moving mechanism for driving the support frame 4 to move on the slide rail 3 is arranged between the support frame 4 and the slide rail 3. The moving mechanism comprises a first rotating shaft 6, and two ends of the first rotating shaft 6 are rotatably connected with the supporting frame 4 through bearings. The support frame 4 is provided with a first motor 5 which drives the first rotating shaft 6 to rotate. The first rotating shaft 6 is fixedly provided with a first gear 7, and the first gear 7 is meshed with a first rack 8 arranged at the bottom of the sliding rail 3 for transmission.

Grooves are formed in two sides of the sliding rail 3, and the tops of the supporting frames 4 are sleeved on two sides of the sliding rail 3. The top both sides rotation of support frame 4 are provided with gyro wheel 9, and the width of recess is slightly greater than the width of gyro wheel 9. The roller 9 is located in the groove and rolls in the groove. The roller 9 and the groove have guiding function on the sliding of the support frame 4, and have supporting function on the support frame 4, so that the sliding stability of the support frame 4 is improved.

The first motor 5 drives the first rotating shaft 6 to rotate, the first rotating shaft 6 drives the first gear 7 to synchronously rotate, and the first gear 7 is meshed with the first rack 8, so that the support frame 4 is driven to slide along the sliding rail 3. In the sliding process of the support frame 4 along the sliding rail 3, the detection cylinder 13 is driven to move above the oxidation ditch, so that pH detection is carried out on sewage at different positions of the oxidation ditch.

The sliding rail 3 is arranged on the cross beam 2, and the sliding rail 3 is fixed below the cross beam 2. The cross beam 2 is provided with a plurality of along the length direction of the oxidation ditch, and the cross beam 2 is used for supporting and fixing the slide rail 3. The cross beam 2 is connected with the side wall of the oxidation ditch through the upright post 1. The two ends of the upright post 1 are respectively and fixedly connected with the cross beam 2 and the side wall of the oxidation ditch. The upright 1 is used for supporting and fixing the cross beam 2.

The inside of the detection cylinder 13 is provided with a guide cylinder 17, a pH detector 18 is fixed in the guide cylinder 17, and the pH detector 18 is arranged coaxially with the detection cylinder 13. The inside of the detection cylinder 13 is provided with a lifting mechanism for driving the guide cylinder 17 to lift. The lifting mechanism comprises a meshed second gear 23 and a second rack 22, and the second rack 22 is vertically and fixedly arranged on the outer wall of the guide cylinder 17. The second gear 23 is fixedly arranged on the second rotating shaft 39, and two ends of the second rotating shaft 39 are rotatably connected with a fixed seat 41 fixed on the inner wall of the detection cylinder 13 through bearings. The fixing base 41 is used for supporting the second rotating shaft 39. The second rotating shaft 39 is fixedly provided with a second bevel gear 40, the second bevel gear 40 is meshed with the first bevel gear 24 arranged on the transmission shaft 25, and the transmission direction is changed through the meshing of the first bevel gear 24 and the second bevel gear 40. The inside of the detection cylinder 13 is provided with a speed reducer 27 which drives the transmission shaft 25 to rotate, and the third motor 26 is connected with the speed reducer 27. The speed reducer 27 is of a double-output structure, two output shafts of the speed reducer 27 are fixedly connected with a transmission shaft 25, and the first bevel gear 24 is arranged on the transmission shaft 25 above the speed reducer 27. A plate for supporting the transmission shaft 25 is arranged on the inner wall of the detection cylinder 13, and the transmission shaft 25 is rotatably connected with the plate through a bearing. The third motor 26 and the decelerator 27 are fixed to the inner wall of the detection cylinder 13.

The top of the guide cylinder 17 is fixedly provided with a guide plate 19, two ends of the guide plate 19 are provided with sliding blocks 20, the inner wall of the detection cylinder 13 is provided with a vertical sliding groove 21, and the sliding blocks 20 are positioned in the sliding groove 21 and are in sliding connection with the sliding groove 21. The slider 20 and the chute 21 have a guiding function for the up-and-down sliding of the guide cylinder 17.

The third motor 26 drives the vertical transmission shaft 25 to rotate through the speed reducer 27, the first bevel gear 24 on the transmission shaft 25 is meshed with the second bevel gear way, so that the horizontal second rotating shaft 39 is driven to rotate, the second rotating shaft 39 drives the second gear 23 to rotate, the second gear 23 is meshed with the second rack 22, the guide cylinder 17 is driven to move up and down, and the guide cylinder 17 drives the pH detector 18 to move up and down synchronously.

The bottom of the detection cylinder 13 is provided with a protection mechanism that protects the electrode of the pH detector 18. Since the detection cylinder 13 is located above the oxidation ditch, the humidity above the oxidation ditch is relatively large, and the released gas easily causes corrosion and damage to the pH detector 18, thereby affecting the detection accuracy of the pH detector 18. The pH detector 18 can be sealed by the protective mechanism, and the pH detector 18 can be protected.

The protection mechanism comprises a plurality of fan-shaped baffles 34 with equal size, and the circular structure formed by assembling the baffles 34 is blocked at an outlet 38 at the bottom of the detection cylinder 13. In this embodiment, the number of the stoppers is 6. The pH detector 18 extends out of the detection cylinder 13 through the outlet 38, and when the pH detector 18 is received in the detection cylinder 13, the baffle 34 seals the outlet 38 to protect the pH detector 18.

The inside of the detection cylinder 13 is provided with a sliding structure for driving the baffle 34 to slide in the detection cylinder 13. The sliding structure comprises a driving gear 28, a driven gear 31 and a third rack 33, wherein the driving gear 28 is fixedly arranged at the bottom end of the transmission shaft 25 below the speed reducer 27. The speed reducer 27 is coaxial and double-output, and the third motor 26 and the speed reducer 27 drive the two transmission shafts 25 to synchronously rotate in the same direction. The upper ends of the driving gear 28 and the driven gear 31 are engaged with the ring gear 29. The inner wall of the detection cylinder 13 is fixedly provided with a mounting groove 30, and a gear ring 29 is positioned in the mounting groove 30 and is rotationally connected with the mounting groove 30 through a bearing. The driving gear 28 drives the gear ring 29 to rotate, and the gear ring 29 drives the driven gears 31 to synchronously rotate. The driving gear 28 is identical in structure to the driven gear 31, so that the driving gear 28 rotates in synchronization with the driven gear 31 under the action of the ring gear 29. The inside of the detection cylinder 13 is provided with a support plate 32 for supporting the driven gear 31, and the support plate 32 is fixedly connected with the inner wall of the detection cylinder 13. The wheel shaft of the driven gear 31 is rotatably connected with the support plate 32 through a bearing. The support plate 32 is provided with a through hole for passing the wheel axle of the driving gear 28, and the wheel axle of the driving gear 28 is also rotatably connected with the support plate 32 through a bearing.

The lower ends of the driving gear 28 and the driven gear 31 are engaged with the third racks 33, the third racks 33 are distributed in a circumferential array in the detection cylinder 13, and the third racks 33 pass through the central axis of the detection cylinder 13. The third racks 33 are arranged in one-to-one correspondence with the driving racks and the driven gears 31. The driving gear 28 and the driven gear 31 are engaged from the same side of the third rack 33, thereby ensuring synchronous sliding of the third rack 33. One end of the third rack 33 is located on the middle line of the baffle 34 and fixedly connected with the baffle 34. The side wall of the detection cylinder 13 is provided with a through hole for the other end of the third rack 33 to pass through, the aperture of the through hole is slightly larger than that of the third rack 33, and the through hole has supporting and guiding functions on the third rack 33.

The bottom of the detection cylinder 13 is fixedly provided with limit strips 36, and the limit strips 36 are in one-to-one correspondence with the baffles 34. The stopper 36 is located directly below the third rack 33. The lower surface of the baffle 34 is provided with a limit groove 37 matched with the limit bar 36, and the limit groove 37 is sleeved on the limit bar 36 and is in sliding connection with the limit bar 36. The limit bars 36 have guiding function on the sliding of the baffle 34, and also have supporting function on the baffle 34, so that the sliding stability of the baffle 34 is improved.

When the speed reducer 27 drives the two transmission shafts 25 on the upper and lower sides of the speed reducer to synchronously rotate clockwise, the driving gear 28 rotates clockwise, the gear ring 29 is driven to rotate clockwise, the driven gear 31 is driven to synchronously rotate clockwise, the driving gear 28 and the driven gear 31 are meshed with the third racks 33, 6 third racks 33 are driven to synchronously slide inwards, the third racks 33 drive the baffle 34 to fold, and the outlet 38 is blocked; the transmission shaft 25 above the speed reducer 27 drives the first bevel gear 24 to rotate clockwise, the first bevel gear 24 drives the second bevel gear 40 to rotate anticlockwise, so that the second rotation shaft 39 drives the second gear 23 to rotate anticlockwise, the second gear 23 drives the second rack 22 to move upwards, and the pH detector 18 is driven by the guide cylinder 17 to be retracted into the detection cylinder 13. During detection, the speed reducer 27 rotates reversely, and the synchronous opening of the baffle 34 and the synchronous lowering of the pH detector 18 can be realized similarly.

The ends of the stops, which are close to each other, are provided with water-absorbing flexible blocks 35. The flexible blocks 35 are fixed on the end heads of the baffles 34, the flexible blocks 35 are also sector blocks, and the side surfaces of the flexible blocks 35 and the side surfaces of the baffles 34 are on the same plane, so that 6 flexible blocks 35 can be assembled into a circular structure. The flexible block 35 may be a rubber block that protects the electrode of the pH detector 18 from damage caused by the electrode of the pH detector 18 touching the rigid baffle 34. The upper surface of the flexible block 35 is fixedly provided with a flexible water absorption block, the water absorption block wipes the sewage adhered to the electrode of the pH detector 18, the electrode is protected, the influence of the last detection sewage on the next detection can be reduced, and the detection precision of the pH detector 18 is improved.

The support frame 4 is provided with a controller and a power supply, and the power supply, the first motor 5, the second motor 14 and the third motor 26 are all electrically connected with the controller. The remote controller can be further arranged, a display screen is arranged on the remote controller, and the remote controller and the display screen are electrically connected with the controller. The mode of electric connection can adopt current technique to set up as required, realizes the automatic intellectual detection system of pH detection system device.

Therefore, the intelligent pH detection device can be used for comprehensively detecting the pH of the oxidation ditch of sewage treatment, and the detection precision is improved.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention and not for limiting it, and although the present invention has been described in detail with reference to the preferred embodiments, it will be understood by those skilled in the art that: the technical scheme of the invention can be modified or replaced by the same, and the modified technical scheme cannot deviate from the spirit and scope of the technical scheme of the invention.

Claims

1. An intelligent pH detection device, its characterized in that: the device comprises a detection cylinder, wherein a sliding plate for fixing the detection cylinder is arranged on a mounting plate in a sliding manner, a support frame is arranged above the mounting plate, a moving mechanism for driving the support frame to move on the sliding rail is arranged between the support frame and the sliding rail, the sliding rail is arranged on a cross beam, the cross beam is connected with the side wall of an oxidation ditch through a stand column, and a controller is arranged on the support frame; the pH detector is fixed in the guide cylinder, the pH detector and the detection cylinder are coaxially arranged, a lifting mechanism driving the guide cylinder to lift is arranged in the detection cylinder, and a protection mechanism for protecting an electrode of the pH detector is arranged at the bottom of the detection cylinder; the protection mechanism comprises a plurality of fan-shaped baffles, the circular structure formed by assembling the baffles is blocked at the outlet of the bottom of the detection cylinder, and a sliding structure for driving the baffles to slide in the detection cylinder is arranged in the detection cylinder.

2. An intelligent pH detection apparatus as claimed in claim 1, wherein: the screw rod is rotationally arranged on the mounting plate, the fixing plate is arranged on the mounting plate, the second motor for driving the screw rod to rotate is arranged on the fixing plate, and the transmission nut matched with the screw rod is arranged on the sliding plate.

3. An intelligent pH detection apparatus as claimed in claim 2, wherein: the mounting plate is provided with a vertical guide rail, the sliding plate is provided with a guide groove matched with the guide rail, and the guide rail is parallel to the screw rod and positioned on two sides of the screw rod.

4. An intelligent pH detection apparatus as claimed in claim 3, wherein: the moving mechanism comprises a first rotating shaft, the first rotating shaft is rotationally connected with the supporting frame, a first motor for driving the first rotating shaft to rotate is arranged on the supporting frame, a first gear is arranged on the first rotating shaft, and the first gear is meshed with a first rack arranged at the bottom of the sliding rail for transmission.

5. The intelligent pH detection apparatus of claim 4, wherein: grooves are formed in two sides of the sliding rail, rollers are rotatably arranged on two sides of the top of the supporting frame, and the rollers are located in the grooves and roll in the grooves.

6. The intelligent pH detection apparatus of claim 5, wherein: the top of guide cylinder is provided with the baffle, and the both ends of baffle are provided with the slider, are provided with vertical spout on the inner wall of detection section of thick bamboo, and the slider is located the spout and with spout sliding connection.

7. The intelligent pH detection apparatus of claim 6, wherein: the lifting mechanism comprises a meshed second gear and a second rack, the second rack is vertically arranged on the outer wall of the guide cylinder, the second gear is arranged on a second rotating shaft, two ends of the second rotating shaft are rotationally connected with a fixing seat fixed on the inner wall of the detection cylinder, a second bevel gear is arranged on the second rotating shaft and meshed with a first bevel gear arranged on the transmission shaft, a reducer driving the transmission shaft to rotate is arranged in the detection cylinder, and a third motor is connected with the reducer.

8. The intelligent pH detection apparatus of claim 7, wherein: the sliding structure comprises a driving gear, a driven gear and a third rack, wherein the driving gear is arranged at the bottom end of a transmission shaft, the upper ends of the driving gear and the driven gear are meshed with a gear ring, the gear ring is rotationally connected with the inner wall of a detection cylinder, the lower ends of the driving gear and the driven gear are meshed with the third rack, the third rack is distributed in a circumferential array in the detection cylinder, the third rack is arranged in one-to-one correspondence with the driving rack and the driven gear, one end of the third rack is positioned on the central line of a baffle and connected with the baffle, and a through hole for allowing the other end of the third rack to pass through is formed in the side wall of the detection cylinder; the inside of detecting a section of thick bamboo is provided with the backup pad that supports driven gear, and driven gear's shaft is connected with the backup pad rotation.

9. The intelligent pH detection apparatus of claim 8, wherein: the end that the dog is close to each other is provided with the flexible piece that absorbs water.

10. The intelligent pH detection apparatus of claim 9, wherein: the bottom of detecting the section of thick bamboo is provided with spacing, and spacing is located under the third rack, is provided with the spacing groove with spacing looks adaptation on the lower surface of baffle, and the spacing groove cover is established on spacing and with spacing sliding connection.