A desulfurization absorption tower slurry density and pH value auxiliary joint measurement and detection device

Abstract

The present invention relates to the field of slurry detection technology, specifically to an auxiliary combined measurement and detection device for the density and pH value of slurry in a desulfurization absorption tower, comprising a sample chamber, a lifting mechanism, a detection unit and a limiting unit. The detection unit comprises a rotatably arranged top plate, a plurality of adjustment blocks radially slidingly arranged on the top plate, and a control member. The density meter and the pH meter are detachably connected to the corresponding adjustment blocks and are alternately distributed in the circumferential direction. The present invention integrates density and pH measurements into one and controls the synchronous downward movement through the same lifting mechanism to implement joint measurement. At the same time, a simple and easy-to-control drive system is used to synchronously adjust the measurement points of the density meter and the pH meter in the circumferential and radial directions to achieve measurement at different positions, thereby achieving effective measurement to comprehensively evaluate the density and pH of the slurry. The present invention limits the downward movement state of the density meter and the pH meter by limiting members, so that the density meter and the pH meter continue to move vertically downward along the vertical path limiting channel composed of the corresponding limiting members.

Description

Technical Field

[0001] The present invention relates to the technical field of slurry detection, in particular to a desulfurization absorption tower slurry density and pH value auxiliary combined measurement and detection device. Background Art

[0002] Desulfurization absorber slurry is a crucial medium for removing sulfur dioxide from flue gas, primarily used in industrial flue gas treatment, such as coal-fired power plants and steel mills. Slurry density directly impacts the system's desulfurization efficiency, gypsum quality, and overall system performance. Slurry pH is also a key parameter, influencing both sulfur dioxide absorption efficiency and the quality of the byproduct gypsum. Therefore, accurately measuring and controlling slurry density and pH is crucial to ensuring efficient operation of desulfurization systems.

[0003] Currently, the density and pH value of the slurry are usually obtained by inserting a density meter and a pH meter into the slurry sample to be measured respectively. After the density meter and the pH meter are stable, the measurement data are directly read from the display of the density meter and the pH meter or from the external monitoring device connected to the density meter and the pH meter. The average value is taken through multiple measurements to finally obtain the density and pH value of the slurry.

[0004] However, the density meter and pH meter are usually set up independently and measured separately. The whole detection process is cumbersome and the overall detection efficiency needs to be improved. When the density meter and pH meter are inserted and measured directly by manual operation, it is not easy for the density meter and pH meter to remain in a vertical state. The density meter and pH meter are inserted obliquely or tilted during the measurement process, which will cause the following problems: 1. The oblique insertion may cause bubbles to adhere to the sensor surface (especially the vibrating density meter), resulting in reduced buoyancy and high readings (displayed density is larger than the actual value), and may affect the vibration frequency. The external monitoring equipment may show that the data is gradually stable (after the bubbles escape), but the initial value is unreliable. During the tilt detection, the liquid surface contact position is lower than the vertical state, resulting in the display 1. The display or external equipment reading is low (especially the buoyancy principle density meter); the tilt of the density meter leads to unstable signal (such as capacitance or ultrasonic density meter), and the external monitoring equipment may show data fluctuations or communication interference; 2. When inserted at an angle, the pH meter electrode may partially leak out of the liquid surface, or the reference electrode liquid junction may be blocked, resulting in reading drift or slow response; during tilted monitoring, the pH electrode liquid junction potential may be uneven, resulting in slight fluctuations in the display or external monitoring equipment data; which directly affects the accuracy of the measurement results; secondly, when manually inserting the density meter and pH meter for measurement, it is difficult to ensure that the verticality of each insertion is the same and the insertion position is accurate when sampling at different positions at the same depth.

[0005] There are also existing methods that use mechanical means to control the insertion and position adjustment of the density meter and pH meter respectively. In addition to being still independently set, there is also a lack of an effective vertical path limiting mechanism. Factors such as equipment vibration and external force can easily affect the verticality of the density meter and pH meter. Moreover, when the adjustment process is completed by the density meter or pH meter itself directly applying force, due to uneven or asymmetric force application points, the density meter and pH meter are also prone to tilt and the same problem mentioned above occurs.

[0006] Therefore, it is necessary to provide an auxiliary joint measurement and detection device for the density and pH value of the desulfurization absorption tower slurry, which aims to solve the problem that the overall process is cumbersome due to the independent measurement of density and pH, and the density meter and pH meter are not easy to maintain a vertical state during insertion or measurement, and the direct force applied to adjust the position leads to uneven force and tilt. Summary of the Invention

[0007] In order to solve the above problems, the present invention provides a desulfurization absorption tower slurry density and pH value auxiliary joint measurement detection device, including a sample bin and a lifting mechanism, the detection device also includes a detection unit and a limit unit. The detection unit includes a rotatably arranged top plate, a plurality of adjustment blocks radially slidingly arranged on the top plate, and a control component. The density meter and the pH meter are detachably connected to the corresponding adjustment blocks and are alternately distributed in the circumferential direction; the lifting mechanism is used to drive the detection unit to move vertically up and down, so that the density meter and the pH meter are synchronously inserted into the slurry sample for joint measurement; the control component is used to control the synchronous radial movement of the plurality of adjustment blocks to adjust the radial measurement points of the density meter and the pH meter; the circumferential measurement points of the density meter and the pH meter are synchronously adjusted by the circumferential rotation of the top plate; the limit unit The element is fixedly arranged between the detection unit and the sample chamber, and includes a movably arranged limiting part and a follower; the limiting part is used to limit the density meter and pH meter to a set vertical movement path, and the limiting part and the density meter or pH meter are in rolling contact; the follower is arranged between the corresponding limiting part and the adjustment block, and is used to enable the limiting part to actively follow the movement of the adjustment block to adapt to the changes in the measuring point of the density meter and pH meter; the lower end of the follower is set as an elastic telescopic structure. During the downward movement of the detection unit, the lower end of the follower first contacts the bottom wall of the sample chamber, thereby achieving buffering and forming an adjustment fulcrum at the same time.

[0008] Preferably, the control member includes an outer ring and an inner ring, and several groups of push blocks corresponding one to one with the adjusting blocks. The outer ring and the inner ring are concentrically arranged and connected by a connecting column and are all concentrically rotatably mounted on the top plate; several groups of push blocks corresponding one to one with the adjusting blocks, each group includes two push blocks respectively mounted on the inner ring wall of the outer ring and the outer ring wall of the inner ring; the adjusting block is provided with an inclined surface that cooperates with each group of push blocks, and the two inclined surfaces on the same adjusting block are parallel and opposite to each other.

[0009] Preferably, the limiting unit also includes a ring frame arranged at the upper end of the sample chamber and a fixed frame distributed in the middle of the ring frame, and the fixed frame is provided with an avoidance hole for the density meter or pH meter to pass through; the fixed frame is composed of a central main body and several branches arranged on the outside of the central main body, the branches correspond one-to-one to the adjustment blocks and the branches are slidably connected to the corresponding limiting parts.

[0010] Preferably, the limiting member comprises a support block radially slidably connected to the corresponding branch and movably connected to the ring frame, and a pinch plate disposed on the support block, wherein the pinch plate includes a limiting structure that engages with the density meter or pH meter in rolling contact. The upper end of the follower is fixedly connected to the lower end of the corresponding adjustment block, and the follower slides vertically through the support block.

[0011] Preferably, the limiting structure is composed of cylinders uniformly arranged in the circumferential direction and connected to the inner wall of the gusset plate, and balls arranged at the ends of the cylinders, and the balls are in rolling contact with the density meter or pH meter.

[0012] Preferably, the detection unit further comprises an annular track connected to the lifting mechanism, the top plate is connected to the annular track for concentric rotation, and a notch is provided on the annular track.

[0013] Preferably, a ball bearing is provided at the bottom of the telescopic section of the elastic telescopic structure of the follower.

[0014] Preferably, the detection device also includes a guide unit for guiding and limiting the downward movement of the top plate; the guide unit includes a guide convex plate arranged on the lower side of the annular track, and a guide concave plate arranged on the outside of the sample chamber and vertically slidably connected to the guide plate.

[0015] The beneficial effects of the present invention are as follows: 1. The present invention integrates density and pH measurements into one and implements joint measurement by controlling the synchronous downward movement through the same lifting mechanism, which simplifies the overall detection process and improves the detection efficiency. At the same time, a simple and easy-to-control drive system is used to synchronously adjust the measurement points of the density meter and pH meter in the circumferential and radial directions to realize measurement at different positions, expand the measurement range, and achieve effective measurement to comprehensively evaluate the slurry density and pH.

[0016] 2. The present invention limits the downward movement of the density meter and the pH meter through limiting parts, so that the density meter and the pH meter continue to move vertically downward along the vertical path limiting channel formed by the corresponding limiting parts, ensuring that the density meter and the pH meter continue to be inserted into the slurry in a state perpendicular to the liquid surface, ensuring that the area and method of the sensor contacting the solution are consistent, thereby improving measurement accuracy. At the same time, the position of the limiting part relative to the density meter / pH meter remains unchanged throughout the entire measurement point adjustment process, ensuring that the vertical path limitation continues to exist.

[0017] 3. When the positioning block drives the density meter / pH meter to move and adjust the measuring point, the present invention adopts a method of driving the limiting part to move through a follower, and then causing the limiting part to move with the density meter / pH meter, instead of the density meter / pH meter driving the limiting part to move. This not only avoids the deformation of the density meter / pH meter directly serving as a force-applying member and avoids instability or deformation of the limiting part, but also avoids the delayed movement of the limiting part due to uneven force on the density meter / pH meter, maintains the vertical path limiting channel, ensures that the density meter / pH meter always moves vertically downward along the vertical path limiting channel, and thereby improves the measurement accuracy.

[0018] 4. Regardless of whether the density meter or pH meter is being adjusted at the measuring point with or without being inserted into the slurry, the present invention provides a stable adjustment fulcrum by setting the bottom of the telescopic section of the elastic telescopic structure to always contact the bottom of the bin during the entire adjustment process, thereby achieving more precise position adjustment in the radial and circumferential directions and enhancing the stability of the overall structure.

[0019] 5. Adjustment of the measuring point of the density meter / pH meter not only enables measurement at different positions and expands the measurement range, but also helps to break the local static layer of slurry around the density meter and pH meter, forcing the slurry to micro-flow, making the slurry around the measuring point tend to be homogenized. At the same time, the follower that moves synchronously with the density meter / pH meter and adapts to the expansion and contraction changes can also stir the bottom of the sample barrel to form a more complete slurry mixing, which in turn helps to improve the density and pH measurement accuracy of the current measuring point. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0021] Figure 2 It is a structural schematic diagram of the follower, ring frame and fixed frame of the present invention.

[0022] Figure 3 It is a structural schematic diagram of the control component, support block, fixing frame and gusset plate of the present invention.

[0023] Figure 4 It is a schematic diagram of the structure of the control component of the present invention when viewed from above.

[0024] Figure 5 It is a top sectional view of the fixing frame, support block, pinch plate and follower 41 of the present invention.

[0025] Figure 6 yes Figure 5 Magnified view of area A in center.

[0026] In the figure: 1. Sample chamber; 2. Lifting mechanism; 3. Detection unit; 4. Limiting unit; 5. Guide unit; 30. Top plate; 31. Adjusting block; 32. Control member; 33. Annular track; 320. Outer ring; 321. Push block; 322. Inclined surface; 40. Limiting member; 41. Follower; 42. Ring frame; 43. Fixed frame; 400. Support block; 401. Buckle plate; 402. Restriction structure. DETAILED DESCRIPTION

[0027] To make the above-mentioned objects, features, and advantages of the present invention more readily apparent, specific embodiments of the present invention are described in detail below with reference to the accompanying drawings. The following description sets forth numerous specific details to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways than those described below, and those skilled in the art may make similar modifications without departing from the scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0028] See Figure 1 and Figure 2 A device for auxiliary combined measurement and detection of slurry density and pH value in a desulfurization absorption tower comprises a sample chamber 1 and a lifting mechanism 2. The sample chamber 1 is provided with a liquid inlet and a liquid outlet, with the liquid inlet located above the liquid outlet. The lifting mechanism 2 is an existing hydraulic lifting system or an electric push rod lifting system. The detection device further comprises a detection unit 3, a limit unit 4, and a guide unit 5. The lifting mechanism 2 is used to drive the detection unit 3 to move vertically up and down, so that the density meter and pH meter are synchronously inserted into the slurry sample for joint measurement, simplifying the overall operation process and improving the overall measurement efficiency. The device for auxiliary combined measurement and detection of slurry density and pH value in a desulfurization absorption tower provided by the present invention is connected to a desulfurization production line for use, and adopts an intermittent sampling method to monitor the slurry density. The continuous flow of slurry (such as gypsum slurry) can easily lead to scaling or particle deposition on the sensor surface, causing the density meter reading to drift or the pH electrode to scale. When the slurry has poor fluidity, the continuous flow of the slurry can make it difficult for the slurry to stably contact the sensor. The intermittent sampling method of the present invention for monitoring slurry density can reduce the interference of the slurry through intermittent static measurement. Intermittent sampling can ensure that the measuring end of the density meter / pH meter is fully wetted. At the same time, intermittent static measurement can facilitate the escape of bubbles, thereby avoiding the density meter from being disturbed by buoyancy or the pH electrode response being distorted.

[0029] A flange or quick connector is used to connect the liquid inlet to the outlet branch of the desulfurization tower circulation pump, and the slurry is intermittently input into the sample chamber 1 from the liquid inlet through a valve. A flange or quick connector is used to connect the liquid outlet to the existing slurry discharge equipment. After the detection device completes the detection, the existing flushing system can be used to clean the sample chamber or the density meter and the pH meter. The setting method of the flushing system is designed according to the actual situation (it is not a design point of the present invention and will not be described here).

[0030] See Figure 1 、 Figure 2 、 Figure 3 and Figure 4 The detection unit 3 includes a rotatable top plate 30, a plurality of adjustment blocks 31 radially slidingly arranged on the top plate 30, and a control member 32. The density meter and the pH meter are detachably connected to the corresponding adjustment blocks 31 and are alternately distributed in the circumferential direction. The top plate 30 is concentrically rotatably mounted on an annular track 33, and the annular track 33 is connected to the lifting mechanism 2 through lateral ear blocks; the control member 32 is used to control the synchronous radial movement of the plurality of adjustment blocks 31 to adjust the radial measurement points of the density meter and the pH meter; the circumferential measurement points of the density meter and the pH meter are synchronously adjusted by the circumferential rotation of the top plate 30; in order to ensure that the measurement points effectively cover the samples in the sample chamber 1, a density meter and a pH meter with fixed measurement points are detachably mounted in the middle of the top plate 30. A notch is provided on the annular track 33, and the rotation control of the top plate 30 can be achieved by cooperating with an existing motor and a gear structure (not shown in the figure), wherein the motor can be installed on a lateral ear block corresponding to the position of the notch, a full gear is installed on the conveying shaft of the motor, and a half gear with teeth located in the notch is concentrically installed on the outer ring wall of the top plate 30, and the half gear is engaged with the full gear.

[0031] See Figure 1 、 Figure 2 、 Figure 3 and Figure 4 The limiting unit 4 is fixedly arranged between the detection unit 3 and the sample chamber 1, and includes a movably arranged limiting member 40 and a follower 41. The limiting member 40 is used to limit the density meter and the pH meter to a set vertical movement path, and the limiting member 40 and the density meter or the pH meter roll in conflict; the follower 41 is arranged between the corresponding limiting member 40 and the adjustment block 31, and is used to enable the limiting member 40 to actively follow the movement of the adjustment block 31 to adapt to the measurement point changes of the density meter and the pH meter; the upper end of the follower 41 is fixedly connected to the lower end of the corresponding adjustment block 31, and the lower end of the follower 41 is arranged as an elastic telescopic structure, and a ball is arranged at the bottom of the telescopic section of the elastic telescopic structure, through which the bottom friction resistance of the follower 41 during the measurement point adjustment process is reduced, thereby improving the smoothness of the movement.

[0032] The initial position of the lower end of the density meter and pH meter before detection is lower than the position of the liquid inlet to avoid the slurry from impacting the density meter and pH meter when the liquid is added. At every preset time interval, the slurry is input into the sample chamber 1 from the liquid inlet through the valve control. After the slurry is input from the liquid inlet in a certain amount and allowed to stand, the detection unit 3 is driven downward by the lifting mechanism 2 to perform simultaneous density and pH measurement. Specifically, the circular track 33, the top plate 30 and the control part 32 are moved vertically downward together by the lifting mechanism 2, and the density meter and pH meter are driven downward synchronously by the adjustment block 31. During this process, the rod-shaped sections of the density meter and pH meter continue to move vertically downward along the vertical path defined channel formed by the corresponding limiting parts 40, and the rod-shaped sections of the density meter and pH meter are in rolling contact with the corresponding limiting parts 40, ensuring that the density meter and pH meter continue to be inserted into the slurry perpendicular to the liquid surface, thereby improving the measurement accuracy of the density meter and pH meter. During the insertion of the density meter and pH meter into the slurry, the follower 41 When the density meter and pH meter are moved downward synchronously, the bottom of the telescopic section of the elastic telescopic structure first contacts the bottom wall of the sample chamber 1, thereby playing a role of pre-support and guidance. When the density meter and pH meter continue to move downward, the elastic telescopic structure contracts, which can play a role of buffering and overload protection. After the density meter and pH meter are inserted into the preset position in the slurry, the lifting mechanism 2 stops working, and the density meter and pH meter start working to automatically measure. After the density meter and pH meter are stable, the measurement data is directly read from the display of the density meter and pH meter or the external monitoring display device connected to the density meter and pH meter to obtain the density and pH value of the slurry. In addition, the design of the follower 41 set between the corresponding limiting member 40 and the adjustment block 31 and with the lower end set as an elastic telescopic structure can also automatically adapt to the unevenness of the chamber bottom, and can still maintain the verticality of the density meter and pH meter, thereby improving the adaptability of the device to complex working conditions.

[0033] See Figure 1 、 Figure 3 and Figure 4 When the cam 320 is in the unlock state, the cam 321 is locked and the locking cam 322 is locked, so that the cam 321 can be unlocked and locked.

[0034] The outer ring 320 and the inner ring are connected as a whole through the connecting column, so the rotation of the outer ring 320 can be controlled; the rotation of the outer ring 320 can be achieved by cooperating with the existing motor and gear structure (not shown in the figure), wherein the motor can be installed on the annular track 33, and gear 1 is installed on the conveying shaft of the motor. Gear 2 is concentrically installed on the outer ring wall of the outer ring 320, and gear 1 is meshed with gear 2; the rotation of the outer ring 320 can also be achieved manually with the cooperation of a pin structure, wherein a plurality of sockets 1 are opened circumferentially on the annular track 33, and a handle with socket 2 is installed on the outer ring wall of the outer ring 320. The outer ring 320 is pushed to rotate by the handle until the socket 2 is opposite to the corresponding socket 1, and then the pin is inserted to fix the outer ring 320; the method of rotating the outer ring 320 is selected according to actual conditions.

[0035] See Figure 1 、 Figure 3 、 Figure 5 and Figure 6 The limiting unit 4 also includes a ring frame 42 detachably mounted on the upper end of the sample chamber 1 and a fixing frame 43 distributed in the middle of the ring frame 42; the fixing frame 43 is composed of a central body and several branches arranged on the outside of the central body, and the branches correspond to the adjustment blocks 31 one by one. The limiting part 40 includes a support block 400 that is radially slidably connected to the corresponding branch and movably connected to the ring frame 42, and a buckle plate 401 that is detachably mounted on the support block 400. The support block 400 can move radially along the ring frame 42 and rotate circumferentially along the ring frame 42. Avoidance holes for the density meter or pH meter to pass through are provided on the fixed frame 43 and the support block 400. The follower 41 slides vertically through the support block 400. A limiting structure 402 that is in rolling contact with the density meter or pH meter is provided in the buckle plate 401. The buckle plate 401 consists of two equal parts, each part consisting of an arc plate and extension plates installed on both horizontal sides of the arc plate. The cylinder is installed on the inner arc surface of the arc plate. The two arc plates in each buckle plate 401 form a complete circular ring structure. First install the density meter / pH meter, pass the density meter / pH meter through the avoidance hole, and then install the gusset plate 401. When installing, first insert the gusset plate 401 vertically into the corresponding support block 400, and then fix the gusset plate 401 with bolts. The detachable design makes it easy to remove the gusset plate 401 separately for replacement or repair. It also makes it easy to install the density meter or pH meter and to remove it separately for replacement or repair. When removing the density meter or pH meter, first remove the corresponding gusset plate 401. It should be noted that the gusset plates 401 corresponding to the density meter and pH meter that are detachably installed in the middle of the top plate 30 can be directly detachably installed on the middle body. The limiting structure 402 is composed of cylinders that are evenly arranged circumferentially and connected to the inner wall of the gusset plate 401, and balls arranged at the ends of the cylinders. The balls are in rolling contact with the density meter or pH meter.

[0036] See Figures 1 to 6In order to obtain more comprehensive measurement data and evaluate the uniformity of the slurry (similar density and pH values ​​in all directions and positions indicate that the slurry is relatively uniform), the radial position and circumferential position of the density meter and pH meter of the corresponding adjustment block 31 are adjusted to achieve measurements at different positions. Specifically: adjust the radial measurement point; the outer ring 320 drives the inner ring to rotate together through the connecting column, and the push block 321 rotates synchronously therewith, and the push block 321 cooperates with the inclined surface 322 on the corresponding adjustment block 31 to apply a driving force to the adjustment block 31, so that the adjustment block 31 drives the density meter or pH meter to move synchronously along the radial direction of the top plate 30, and at the same time, the adjustment block 31 drives the support block 400 to move synchronously through the follower 41. While the support block 400 moves radially along the corresponding branch, it also moves radially along the ring frame 42, and the limiting structure 402 moves synchronously with the support block 400, ensuring that the limiting structure 402 is relative to the entire radial measurement point adjustment process. The position of the density meter / pH meter remains unchanged, thereby maintaining the centration of the density meter / pH meter and preventing measurement errors caused by position offset of the density meter / pH meter; at the same time, the support block 400 is driven radially by the cooperation of the follower 41 and the adjustment block 31, rather than the density meter / pH meter driving the support block 400 through the limiting structure 402, thereby avoiding deformation of the density meter / pH meter directly acting as a force-applying member and avoiding instability or deformation of the limiting structure 402, and also avoiding uneven force on the density meter / pH meter causing delayed movement of the limiting structure 402, maintaining the vertical path limiting channel, and ensuring that the density meter / pH meter always moves vertically downward along the vertical path limiting channel.

[0037] The simple coordination of the two-sided inclined surfaces 322 of the adjustment block 31 and the corresponding push block 321 ensures a more even force distribution during radial movement of the slider, maintaining its stability and straightness throughout its motion. This also improves the response speed of position adjustment without hysteresis, thereby enhancing overall measurement efficiency. This is particularly true when frequently adjusting the measurement point of a density meter or pH meter while it is inserted into a slurry. The arrangement of the two-sided inclined surfaces 322 and the corresponding push block 321 better accommodates dynamic adjustments, providing sufficient flexibility and response speed while ensuring accuracy.

[0038] Adjust the circumferential measuring point; the top plate 30 drives the adjusting block 31 and the density meter and pH meter to rotate circumferentially by a preset angle. At the same time, the adjusting block 31 drives the support block 400 to rotate synchronously through the follower 41. The support block 400 rotates along the ring frame 42, and the limiting structure 402 moves synchronously with the support block 400 to ensure that the position of the limiting structure 402 relative to the density meter / pH meter remains unchanged during the entire radial measuring point adjustment process, thereby completing the circumferential measuring point change of the density meter and pH meter.

[0039] If the measurement point is adjusted while the density meter or pH meter is inserted into the slurry, regardless of whether it is a radial or circumferential measurement point adjustment, the bottom of the telescopic section of the elastic telescopic structure always contacts the bottom of the bin during the entire adjustment process. This not only provides a stable adjustment fulcrum, achieving more precise position adjustment in the radial and circumferential directions, but also enhances the stability of the overall structure.

[0040] Furthermore, when adjusting the measurement point while the density meter or pH meter is inserted into the slurry, the density meter, pH meter, and follower 41 can be moved back and forth at a low speed an odd number of times (the final stop point being the current measurement point). This allows the density meter, pH meter, and follower 41 to function as a stirring rod, breaking the local static layer of slurry around the density meter or pH meter, forcing the slurry to micro-flow, and homogenizing the slurry around the measurement point. Furthermore, the follower 41 can also simultaneously stir the bottom of the sample barrel (an area prone to sedimentation), creating a more complete slurry mixing, which in turn helps improve the density and pH measurement accuracy at the current measurement point. If the measurement point is adjusted while the bottom of the telescopic section of the follower 41 contacts the bottom of the bin and the density meter or pH meter is not inserted into the slurry, the slurry is stirred by the follower 41 moving at a low speed.

[0041] See attached Figure 1 The guide unit 5 includes a guide convex plate detachably mounted on the lower side of the annular track 33, a guide concave plate arranged on the outside of the sample chamber 1 and vertically slidably connected to the guide plate, and the lateral ear blocks are detachably connected to the annular track 33 and the corresponding ear plates. The guide convex plate and the guide concave plate cooperate to guide and limit the downward movement of the top plate 30.

[0042] In the description of the present invention, it should also be noted that, unless otherwise expressly specified or limited, the terms "disposed," "connected," "installed," and "connected" should be understood in a broad sense. For example, they may refer to fixed or detachable connections, integral or sliding connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; or internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0043] The embodiments of this specific implementation method are all preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the scope of protection of the present invention.

Claims

1. A desulfurization absorption tower slurry density and pH value auxiliary combined measurement and detection device, including a sample chamber, a lifting mechanism, a density meter and a pH meter, characterized in that: Also includes: The detection unit includes a rotatably mounted top plate, a plurality of adjustment blocks radially slidingly mounted on the top plate, and a control member. The density meter and the pH meter are detachably connected to the corresponding adjustment blocks and are alternately distributed in the circumferential direction. The lifting mechanism is used to drive the detection unit to move vertically up and down, so that the density meter and pH meter are synchronously inserted into the slurry sample for joint measurement; The control unit is used to control the synchronous radial movement of several adjustment blocks to adjust the radial measurement points of the density meter and pH meter; the circumferential measurement points of the density meter and pH meter are synchronously adjusted by rotating the top plate; The limiting unit is fixedly arranged between the detection unit and the sample chamber, and includes: A movable limiting member is used to limit the density meter and pH meter to a set vertical movement path, and the limiting member and the density meter or pH meter roll in conflict; The follower is provided between the corresponding limiting member and the position adjustment block, and is used to enable the limiting member to actively follow the movement of the position adjustment block to adapt to the changes in the measuring points of the density meter and the pH meter; The lower end of the follower is set as an elastic telescopic structure. When the detection unit moves downward, the lower end of the follower first hits the bottom wall of the sample chamber, achieving buffering and forming a position adjustment fulcrum; Controls include: The outer ring and the inner ring are concentrically arranged and connected by a connecting column and are both concentrically rotatably mounted on the top plate; Several groups of push blocks corresponding to the adjustment blocks one by one, each group including two push blocks respectively installed on the inner ring wall of the outer ring and the outer ring wall of the inner ring; The adjustment block is provided with an inclined surface that matches each group of push blocks, and the two inclined surfaces on the same adjustment block are parallel and oppositely arranged; The limiting unit also includes a ring frame arranged at the upper end of the sample compartment and a fixing frame distributed in the middle of the ring frame, and the fixing frame is provided with an avoidance hole for the density meter or pH meter to pass through; The fixing frame is composed of a central body and a plurality of branches arranged outside the central body. The branches correspond to the adjustment blocks one by one and the branches are slidably connected to the corresponding limiting members. Limited items include: A support block that is radially slidably connected to the corresponding branch and movably connected to the ring frame; A gusset plate is provided on the support block, wherein a limiting structure for rolling contact with the density meter or pH meter is provided in the gusset plate; The upper end of the follower is fixedly connected to the lower end of the corresponding adjustment block, and the follower vertically slides through the support block.

2. The device for auxiliary combined measurement and detection of slurry density and pH value in a desulfurization absorption tower according to claim 1, characterized in that: The limiting structure consists of cylinders which are evenly arranged in the circumference and connected to the inner wall of the gusset plate, and balls arranged at the ends of the cylinders. The balls are in rolling contact with the density meter or the pH meter.

3. The device for auxiliary combined measurement and detection of slurry density and pH value in a desulfurization absorption tower according to claim 1, characterized in that: The detection unit also includes an annular track connected to the lifting mechanism, and the top plate is connected to the annular track in a concentric rotation.

4. The device for auxiliary combined measurement and detection of slurry density and pH value in a desulfurization absorption tower according to claim 1, characterized in that: A ball bearing is provided at the bottom of the telescopic section of the elastic telescopic structure of the follower.

5. The device for auxiliary combined measurement and detection of slurry density and pH value in a desulfurization absorption tower according to claim 4, characterized in that: The detection device also includes a guide unit for guiding and limiting the downward movement of the top plate; the guide unit includes a guide convex plate arranged on the lower side of the annular track, and a guide concave plate arranged on the outside of the sample chamber and vertically slidably connected to the guide plate.

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