Phosphoric acid tank rake torque monitoring displacement sensor replacement structure device

Abstract

The utility model relates to the technical field of phosphoric acid processing equipment, in particular to a phosphoric acid tank rake torque monitoring displacement sensor replacement structure device which comprises a tank body, a rotating motor and a tank rake are arranged in the tank body, and a torque monitoring mechanism is arranged between an output shaft of the rotating motor and the tank rake. The torque monitoring mechanism comprises a driven rotating disc, a top cover, a driving rotating disc and a plurality of abutting springs, a plurality of protruding rods are fixed outside the driven rotating disc, indicating fingers are arranged at the tail ends of the protruding rods, a plurality of fan-shaped blocks are arranged outside the driving rotating disc, straight rods are fixed outside the fan-shaped blocks, and indicating plates are arranged at the tail ends of the straight rods. According to the phosphoric acid tank rake torque monitoring displacement sensor replacement structure device, torque change is converted into visual mechanical displacement signals through relative displacement of the driven rotating disc and the driving rotating disc in combination with linkage between the indicating pointer and the indicating plate, and torque state monitoring is achieved.

Description

Technical Field

[0001] This utility model relates to the field of phosphoric acid processing equipment technology, specifically to a replacement structure device for a displacement sensor for monitoring the torque of a phosphoric acid tank rake. Background Technology

[0002] Phosphoric acid rakes are key mixing equipment in wet-process phosphoric acid production, primarily used for mixing phosphoric acid slurries in extraction or purification tanks. Their rake tooth structure effectively prevents solid particle deposition, ensuring uniform mixing of reactants. In the phosphoric acid purification process, the rake promotes phase separation through continuous stirring, while preventing localized crystallization or blockage, directly impacting production efficiency and product quality. This equipment must possess corrosion and wear resistance to withstand highly acidic conditions.

[0003] Utility model patent CN216537002U discloses an extraction and separation tank for a phosphoric acid purification device. This extraction and separation tank includes a tank body and a rake. The tank body has a top and a bottom, with a residue outlet at the bottom. A stirring shaft, which enters the tank body from the top, is rotatably mounted on the rake. A stirring paddle is fixedly connected to the stirring shaft at a position in the lower part of the tank body. The tank body has an inner cylinder with openings at both the top and bottom, through which the stirring shaft passes. The system is equipped with a vertically oriented guide cylinder. The upper end of the guide cylinder is sealed, and the lower end is open. A feed pipe is connected to the guide cylinder, which passes through the top of the tank or the top of the tank in a sealed manner. The feed pipe is connected to the internal space of the guide cylinder. An organic phase overflow weir is provided on the inner cylinder. An acid phase overflow weir is provided in the space outside the inner cylinder inside the tank. The height of the top of the acid phase overflow weir is lower than the height of the top of the organic phase overflow weir. The lowest points of the organic phase overflow weir and the acid phase overflow weir are respectively connected to the organic phase discharge pipe and the acid phase discharge pipe leading to the outside of the tank.

[0004] The extraction and separation tank used in this phosphoric acid purification unit has a rake whose stirring shaft is directly connected to the motor. This lack of a real-time monitoring mechanism for the operating torque makes it prone to motor overload or rake damage when the resistance of the medium inside the tank changes abruptly, such as when sediment accumulates or viscosity changes. Furthermore, the trend of torque changes cannot be visually assessed, and the mechanical displacement of the rake, such as its deflection angle, is not converted into an observable signal. This makes it difficult for operators to adjust the stirring parameters in a timely manner, affecting separation stability. Relying on external sensors to monitor the equipment status requires additional installation space and is susceptible to phosphoric acid corrosion, increasing maintenance costs. Therefore, we propose an alternative structure for a phosphoric acid rake torque monitoring displacement sensor. Utility Model Content

[0005] The purpose of this invention is to provide a replacement structure for a displacement sensor for monitoring the torque of a phosphate trough rake, in order to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A replacement structure device for a torque monitoring displacement sensor in a phosphate trough rake includes a trough body, in which a rotating motor and a rake are provided. A torque monitoring mechanism is provided between the output shaft of the rotating motor and the rake. The torque monitoring mechanism includes a passive turntable fixedly connected to the top end of the rake shaft, a top cover installed on the top end of the passive turntable, an active turntable sleeved inside the passive turntable and rotatably connected to the passive turntable, and a plurality of abutment springs provided inside the passive turntable.

[0008] The top surface of the passive turntable has several fan-shaped grooves arranged in an annular shape at equal intervals. Several outwardly protruding protrusions are fixed at the bottom of the outer peripheral surface of the passive turntable, and the ends of the protrusions are provided with indicator needles.

[0009] The outer circumferential surface of the active turntable is provided with a number of fan-shaped blocks arranged in a ring at equal intervals. The fan-shaped blocks extend into the fan-shaped grooves. A straight rod extending outward is fixed on the outer circumferential surface of the fan-shaped blocks. An indicator plate is provided at the end of the straight rod, and the tip of the indicator needle faces the outer end face of the indicator plate.

[0010] The abutment spring is located between the sector block and the groove wall of the sector groove.

[0011] Preferably, a fixing frame is fixed to the top of the trough, the rotating motor is mounted on the top of the fixing frame, and the trough rake is coaxially connected to the end of the output shaft of the rotating motor through the torque monitoring mechanism;

[0012] In this setup, the mounting bracket provides stable support for the rotating motor, ensuring axial alignment between the torque monitoring mechanism and the rake, and preventing transmission misalignment.

[0013] Preferably, a cavity is formed at the center of the top surface of the passive turntable, the inner end of the fan-shaped groove is connected to the cavity, and the active turntable is fitted inside the cavity and can rotate axially within the cavity.

[0014] In this setting, the cavity restricts the radial displacement of the active turntable, allowing it to rotate only axially relative to the passive turntable, thus ensuring the stability of torque transmission.

[0015] Preferably, a side groove is formed on the side wall of the fan-shaped groove, and the end of the abutment spring extends into the side groove;

[0016] In this configuration, the side groove is fixed to the end of the spring, so that its compression is directly related to the deflection angle of the sector block, which facilitates torque monitoring.

[0017] Preferably, the outer peripheral surface of the passive turntable is provided with a plurality of through windows, the through windows are connected to the fan-shaped groove, the straight rod extends outward from the through windows, the through windows provide the straight rod with a space for movement, so that the straight rod can rotate synchronously with the active turntable;

[0018] In this setup, the through window provides a movement channel for the straight rod, allowing it to rotate synchronously with the active turntable, while limiting radial sway to ensure the accuracy of displacement indication.

[0019] Preferably, a convex shaft is fixed to the top of the active turntable, and the top of the convex shaft passes through the top cover and is coaxially and fixedly connected to the end of the output shaft of the rotating motor.

[0020] In this design, the convex shaft passes through the top cover and is coaxially connected to the motor output shaft, ensuring the continuity of power transmission while reducing structural vibration.

[0021] Preferably, a groove is formed on the side surface of the sector block near the side groove, the head end of the abutment spring extends into the groove, the abutment spring is in a compressed state between the side groove and the groove, and the abutment spring provides elastic resistance when the sector block is deflected by force;

[0022] In this configuration, the groove is fixed to the end of the spring, providing elastic resistance when the sector block deflects, buffering torque fluctuations, and reducing mechanical shock.

[0023] Preferably, the outer surface of the indicator plate is provided with a plurality of equally spaced indicator grooves, and the indicator needle points to the indicator grooves to display the relative displacement caused by torque;

[0024] In this setting, the indicator scale groove works in conjunction with the indicator needle to visually display the relative displacement caused by torque, making it easy for operators to monitor and adjust in real time.

[0025] Compared with the prior art, the beneficial effects of this utility model are:

[0026] 1. This phosphate tank rake torque monitoring displacement sensor replacement structure device, through the relative displacement of the passive turntable and the active turntable, combined with the linkage between the indicator needle and the scale groove, converts torque changes into intuitive mechanical displacement signals, and can realize torque status monitoring without external sensors.

[0027] 2. The displacement sensor replacement structure for monitoring torque in the phosphate trough rake uses a spring to create elastic resistance between the sector block and the sector groove. When the torque exceeds the limit, the spring is compressed to buffer the impact, reducing the risk of mechanical damage.

[0028] 3. This replacement structure for the torque monitoring displacement sensor of the phosphate trough rake integrates the torque monitoring mechanism directly between the rake and the drive shaft of the rotating motor, requiring no additional installation space, and its corrosion-resistant structure is maintained synchronously with the trough body. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0030] Figure 2 This is a schematic diagram of the torque monitoring mechanism in this utility model;

[0031] Figure 3 This is a schematic diagram of the internal structure of the torque monitoring mechanism in this utility model;

[0032] Figure 4 This is a schematic diagram of the passive turntable in this utility model;

[0033] Figure 5 This is an enlarged schematic diagram of point A in this utility model;

[0034] Figure 6 This is a schematic diagram of the active turntable in this utility model;

[0035] Figure 7 This is an enlarged schematic diagram of point B in this utility model;

[0036] The meanings of the labels in the diagram are as follows:

[0037] 100. Trench body; 110. Fixing frame; 120. Rotating motor; 130. Trench rake;

[0038] 200. Torque monitoring mechanism; 210. Passive turntable; 211. Cavity; 212. Sector groove; 213. Side groove; 214. Through window; 215. Protruding rod; 216. Indicator needle; 220. Top cover; 230. Active turntable; 231. Sector block; 232. Protruding shaft; 233. Groove; 234. Straight rod; 235. Indicator plate; 236. Indicator scale groove; 240. Abutment spring. Detailed Implementation

[0039] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0040] Please see Figures 1-7A replacement structure for a torque monitoring displacement sensor in a phosphate trough rake includes a trough body 100, a rotating motor 120, and a rake 130 housed within the trough body 100. A torque monitoring mechanism 200 is installed between the output shaft of the rotating motor 120 and the rake 130. Through the mechanical linkage design of the torque monitoring mechanism 200, it can replace traditional electronic sensors and directly monitor the working torque of the rake 130, avoiding sensor failure due to phosphate corrosion. A fixing frame 110 is fixed to the top of the trough body 100, and the rotating motor 120 is mounted on the top of the fixing frame 110. The rake 130 and the end of the output shaft of the rotating motor 120 are coaxially connected through the torque monitoring mechanism 200. The fixing frame 110 provides stable support for the overall structure, ensuring the axial alignment of the torque monitoring mechanism 200 with the rotating motor 120 and the rake 130.

[0041] like Figures 1-4 and Figure 6 As shown, in this utility model, the torque monitoring mechanism 200 includes a passive turntable 210 fixedly connected to the top end of the rake 130 shaft, a top cover 220 installed on the top end of the passive turntable 210, an active turntable 230 sleeved inside the passive turntable 210 and rotatably connected to the passive turntable 210, and several abutment springs 240 disposed inside the passive turntable 210. The passive turntable 210 rotates synchronously with the rake 130, while the active turntable 230 is linked to the rotating motor 120 via a convex shaft 232. The relative displacement between the two can reflect torque changes. A convex shaft 232 is fixedly attached to the top end of the active turntable 230. The top end of the convex shaft 232 passes through the top cover 220 and is coaxially fixedly connected to the end of the output shaft of the rotating motor 120. The top cover 220 seals the top of the passive turntable 210 to prevent media intrusion and provides axial positioning for the convex shaft 232.

[0042] like Figure 3 and Figure 4 As shown, specifically, the top surface of the passive turntable 210 has several annularly spaced sector-shaped grooves 212. A cavity 211 is formed at the center of the top surface of the passive turntable 210. The inner ends of the sector-shaped grooves 212 are connected to the cavity 211. The active turntable 230 is fitted inside the cavity 211 and can rotate axially within the cavity 211. The cavity 211 restricts the radial displacement of the active turntable 230, ensuring that it only deflects relative to the passive turntable 210 axially. Several annularly spaced sector-shaped blocks 231 are arranged on the outer circumferential surface of the active turntable 230. The sector-shaped blocks 231 extend into the sector-shaped grooves 212. The cooperation between the sector-shaped blocks 231 and the sector-shaped grooves 212 converts the torque into an angular difference between the two, which in turn reflects the magnitude of the torque through the compression of the abutment spring 240.

[0043] like Figures 2-7As shown, further, several outwardly extending protruding rods 215 are fixed at the bottom position of the outer peripheral surface of the passive turntable 210. The ends of the protruding rods 215 are equipped with indicator needles 216. An outwardly extending straight rod 234 is fixed on the outer peripheral surface of the sector block 231. The end of the straight rod 234 is equipped with an indicator plate 235. The tip of the indicator needle 216 faces the outer end face of the indicator plate 235. The extended design of the protruding rods 215 and the straight rod 234 amplifies the internal torque displacement to the external visible area. Several equally spaced indicator scale grooves 236 are provided on the outer surface of the indicator plate 235. The indicator needle 216 points to the indicator scale grooves 236 to display the relative displacement caused by torque. The cooperation between the indicator scale grooves 236 and the indicator needle 216 provides an intuitive torque reading, facilitating real-time adjustment of the parameters of the rotating motor 120 by the operator.

[0044] like Figure 3 and Figure 4 As shown, in addition, a number of through windows 214 are provided on the outer peripheral surface of the passive turntable 210. The through windows 214 are connected to the fan-shaped groove 212. The straight rod 234 extends outward from the through windows 214. The through windows 214 provide the straight rod 234 with room to move, so that the straight rod 234 can rotate synchronously with the active turntable 230. The through windows 214 provide the straight rod 234 with a channel to move, ensuring its degree of freedom to rotate with the active turntable 230, while limiting radial sway.

[0045] like Figure 3 , Figure 4 and Figure 6 As shown, it is worth noting that the abutment spring 240 is located between the sector block 231 and the groove wall of the sector groove 212. A side groove 213 is formed on the side wall of the sector groove 212, and the end of the abutment spring 240 extends into the side groove 213. A groove 233 is formed on the side surface of the sector block 231 near the side groove 213, and the head end of the abutment spring 240 extends into the groove 233. The cooperation between the side groove 213 and the groove 233 fixes both ends of the abutment spring 240, so that its compression is directly related to the deflection angle of the sector block 231. The abutment spring 240 is in a compressed state between the side groove 213 and the groove 233. When the sector block 231 is deflected by force, the abutment spring 240 provides elastic resistance. This elastic resistance can balance torque fluctuations and avoid rigid impacts. Simultaneously, the torque value can be indirectly quantified through the spring deformation.

[0046] It is worth noting that the rotating motor 120 involved in this utility model is a conventional technology and will not be described in detail here.

[0047] When using the replacement structure device for the displacement sensor for monitoring the torque of the phosphate trough rake in this embodiment, firstly, start the rotating motor 120 so that the rotating motor 120 drives the cam shaft 232 to rotate the active turntable 230. At this time, the active turntable 230 pushes the abutment spring 240 through the sector block 231 to transmit the torque to the passive turntable 210.

[0048] Then, the passive turntable 210 lags due to the medium resistance of the rake 130, which causes an angle difference to form between the sector block 231 and the sector groove 212, and compresses the abutment spring 240.

[0049] Next, the straight rod 234 rotates with the active turntable 230, causing the indicator plate 235 and the indicator needle 216 to undergo relative displacement;

[0050] Finally, the relative position change between the indicator needle 216 and the indicator scale groove 236 directly displays the torque magnitude. The operator can adjust the power of the rotating motor 120 or clean the sediment in the groove based on the reading.

[0051] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A phosphoric acid tank harrow torque monitoring displacement sensor alternative structure device, comprising a tank body (100), a rotating motor (120) and a tank harrow (130) are arranged in the tank body (100), characterized in that: A torque monitoring mechanism (200) is provided between the output shaft of the rotating motor (120) and the trough rake (130). The torque monitoring mechanism (200) includes a passive turntable (210) fixedly connected to the top end of the shaft of the trough rake (130), a top cover (220) installed on the top end of the passive turntable (210), an active turntable (230) sleeved in the passive turntable (210) and rotatably connected to the passive turntable (210), and a plurality of abutment springs (240) provided in the passive turntable (210). ​ The top surface of the passive turntable (210) is provided with a number of fan-shaped grooves (212) in an annular shape with equal spacing. A number of outwardly protruding rods (215) are fixed at the bottom position of the outer peripheral surface of the passive turntable (210). The end of the protruding rods (215) is provided with an indicator needle (216). The outer peripheral surface of the active turntable (230) is provided with a number of fan-shaped blocks (231) arranged in a ring at equal intervals. The fan-shaped blocks (231) extend into the fan-shaped groove (212). A straight rod (234) extending outward is fixed on the outer peripheral surface of the fan-shaped blocks (231). An indicator plate (235) is provided at the end of the straight rod (234). The top of the indicator needle (216) faces the outer end face of the indicator plate (235). The abutment spring (240) is located between the sector block (231) and the groove wall of the sector groove (212).

2. The phosphoric acid tank rake torque monitoring displacement sensor replacement structure apparatus according to claim 1, characterized in that: The top of the trough (100) is fixed with a bracket (110), the rotating motor (120) is installed on the top of the bracket (110), and the trough rake (130) is coaxially connected to the end of the output shaft of the rotating motor (120) through the torque monitoring mechanism (200).

3. The phosphoric acid tank rake torque monitoring displacement sensor replacement structure apparatus according to claim 1, characterized by: A cavity (211) is provided at the middle position of the top surface of the passive turntable (210). The inner end of the fan-shaped groove (212) is connected to the cavity (211). The active turntable (230) is fitted inside the cavity (211) and can rotate axially in the cavity (211).

4. The phosphoric acid tank rake torque monitoring displacement sensor replacement structure apparatus according to claim 1, characterized by: A side groove (213) is provided on the side wall of the fan-shaped groove (212), and the end of the abutment spring (240) extends into the side groove (213).

5. The phosphoric acid tank rake torque monitoring displacement sensor replacement structure apparatus according to claim 1, wherein: The passive turntable (210) has several through windows (214) on its outer peripheral surface. The through windows (214) are connected to the fan-shaped groove (212). The straight rod (234) extends outward from the through window (214). The through window (214) provides the straight rod (234) with room for movement, so that the straight rod (234) can rotate synchronously with the active turntable (230).

6. The phosphoric acid tank rake torque monitoring displacement sensor replacement structure apparatus of claim 1, wherein: The top of the active turntable (230) is fixed with a convex shaft (232), and the top of the convex shaft (232) passes through the top cover (220) and is coaxially fixedly connected to the end of the output shaft of the rotating motor (120).

7. The phosphoric acid tank rake torque monitoring displacement sensor replacement structure apparatus according to claim 4, characterized by: A groove (233) is provided on the side surface of the sector block (231) near the side groove (213). The head end of the abutment spring (240) extends into the groove (233). The abutment spring (240) is in a compressed state between the side groove (213) and the groove (233). The abutment spring (240) provides elastic resistance when the sector block (231) is deflected by force.

8. The phosphoric acid tank rake torque monitoring displacement sensor replacement structure apparatus of claim 1, wherein: The outer surface of the indicator plate (235) is provided with a plurality of indicator scale grooves (236) arranged at equal intervals, and the indicator needle (216) points to the indicator scale grooves (236) to display the relative displacement caused by torque.

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