1113 results about "Screw pump" patented technology

The invention discloses a high-silt-content working condition screw pump control system and method, and belongs to the technical field of soil layer drilling, and the system comprises a multi-mode sensing module, an intelligent decision and control module, a self-adaptive adjustment execution module and a self-cleaning and anti-blocking module. According to the high-mud-content working condition screw pump control system and method, the operation state and medium characteristic data of the screw pump are accurately collected through the multi-mode sensing module, and early prediction and accurate diagnosis of faults are achieved in combination with an advanced data processing algorithm and a deep learning model in the intelligent decision-making and control module; meanwhile, a self-adaptive adjustment execution module and a self-cleaning and anti-blocking module are utilized to dynamically optimize the rotating speed and the gap of the motor and intelligently clean and prevent blocking, so that full-process closed-loop control is formed; finally, multiple beneficial effects of improving the monitoring accuracy, enhancing the anti-interference capability of the system, reducing the maintenance cost, reducing the non-planned downtime, and improving the operation efficiency and stability are achieved.

The utility model discloses a two-shaft mixing pump. The two-shaft mixing pump is characterized by comprising a pump body and two connecting shafts, a roots pump body cavity and a screw pump body cavity which are mutually independent are arranged in the pump body; the pump body is provided with an air inlet, an air outlet and a connecting channel, the roots pump body cavity is communicated with the outside atmosphere through the air inlet, the screw pump body cavity is communicated with the outside atmosphere through the air outlet, and the roots pump body cavity is communicated with the screw pump body cavity through the connecting channel. Two roots rotor parts which are meshed with each other are arranged in a cavity of the roots pump body, and the two roots rotor parts are respectively arranged on the two connecting shafts; and two screw rotor parts which are meshed with each other are arranged in a cavity of the screw pump body, and the two screw rotor parts are respectively mounted on the two connecting shafts. According to the utility model, the occupied space is reduced, the vacuum degree is improved, and the cost is reduced.

The invention provides a double-screw pump helical casing molded line forming and milling device, which relates to the field of helical casing processing, and comprises a base, a driving screw, a fixed bracket and a movable table, a threaded cylinder is installed on the bottom side in the moving table, the driving screw is further in engaged connection with the threaded cylinder through threads, two sets of machining material driving shafts are rotationally clamped to the moving table, and supporting structures are further arranged on the lower sides of the foremost ends of the parts, with the large diameters, of the two sets of machining material driving shafts. Lifting structures are further arranged at the front ends of the small-diameter parts of the two sets of machining material driving shafts, the fixing support is fixed to the base, a double-end driving motor is installed at the rear end of the top of the fixing support, and two sets of milling cutter driving shafts are rotationally clamped to the inner side of the upper end of the fixing support; and the rear end of the milling cutter driving shaft is in transmission connection with a motor shaft at the rear end of the double-head driving motor. Two sets of spiral raw materials can be machined at the same time, the manufacturing cost is low, and the problems that an existing machining machine tool is high in investment and low in machining efficiency are solved.

An eccentric screw pump with a rotor of a pump drive shaft circling essentially about a fixed axis relative to a stator in a bearing block, which pump drive shaft is rotationally driven by a motor drive shaft of a motor, a power train and a screw conveyor, which revolves in a rotating-oscillating manner in a screw flight of the stator, wherein the power train provides the screw conveyor with its drive torque and the power train adapts the differences of the motion sequences of the screw conveyor and of the pump drive shaft. There is thereby an air gap between the motor drive shaft and the pump drive shaft, wherein the motor drive shaft supports a motor-side coupling half and the pump drive shaft supports a pump-side coupling half, which are connected to one another in a torque-transmitting manner by means of magnetic forces across the air gap, wherein the air gap is penetrated by a seal, which hermetically separates the motor region from the rest of the eccentric screw pump.

The invention discloses a solid-liquid two-phase flow magnetic shear thickening polishing device and method based on controllable multi-physical field coupling, and belongs to the field of magnetic field auxiliary polishing. In order to solve the problems of low polishing efficiency and poor polishing quality uniformity caused by single physical field and poor controllability in the traditional magnetic field assisted polishing technology, the invention provides a coupling effect of a controllable magnetic field and a flow field to realize high-efficiency and high-quality precise polishing. The polishing device is composed of a screw pump, a permanent magnet, a magnetic pole support, a circulating pipeline, an inlet flange, a baffle, a clamp, a workpiece, a positioning block, a positioning plate, an outlet flange and a circulating pipe flange. Permanent magnets with different distributions and polarities are arranged in the magnetic pole support, the magnetic field intensity and the targeting degree of a polishing area are accurately controlled, and the screw pump conveys a polishing medium to the polishing area at a specific flow speed through rotating extrusion of a screw. The curing degree of the polishing medium and the control force of the grinding material are controlled by precisely regulating and controlling the coupling effect of the magnetic field and the flow field, and efficient and high-quality precise polishing of the workpiece is achieved.

Described is an actuated valveless architecture system for regulating temperature in a vehicle having a battery system and a drive system. The actuated valveless architecture system includes a first screw pump, a second screw pump, and a plurality of check valves. The plurality of check valves is fluidically coupled with at least one of the first screw pump and the second screw pump. The plurality of check valves is configured to define a battery loop to regulate temperature of the battery system and a drivetrain loop to regulate temperature of the drive system.

The invention relates to a hypocycloidal pin gear speed reducer assembly, a speed reducer and application. The speed reducer comprises an input shaft system, a first output shaft system and a second output shaft system; the number ratio of rotors to stators of the input shaft system is N: (N + 1), the section contours of the rotors and the stators are equidistant lines of a pair of conjugated hypocycloids, the rotors do planetary motion in the stators, the rotors rotate around the centers of the rotors and revolve around the centers of the stators at the same time, and the speed ratio of rotation to revolution is (N + 1): N. An input shaft rotates at the revolution speed of the rotors. Output shafts in the first output shaft system and the second output shaft system are connected through splines on the shafts and rotate according to the difference between the rotation speed and the revolution speed of a rotor, the purpose of speed reduction is achieved, and the speed reduction ratio is N: 1; and the rotor and the stator are made of steel with the hardness of over HRC58. The hypocycloid pin wheel speed reducer has the advantages of being high in transmission efficiency, stable in operation and long in service life, the outer diameter of the hypocycloid pin wheel speed reducer is smaller than the allowable maximum outer diameter of an oil well shaft, the hypocycloid pin wheel speed reducer can be suitable for screw pump oil extraction, and the technical problem that a pin wheel speed reducer cannot be suitable for an oil well all the time is solved.

The disclosure relates to a screw pump (2) comprising: a casing (3) with an inlet (30), an outlet (31) and a flow chamber (32) between the inlet and the outlet, and at least two screws (4, 5, 6) housed in the flow chamber to force a fluid flow 5 through the flow chamber from the inlet to the outlet, wherein each screw (4, 5, 6) comprises a release coupling (45, 52, 62) to restrict, when in use, the rotation of the screw when it is being extracted from a molding tool.

This document describes a system with an actuated, valveless architecture for temperature control in a vehicle comprising a battery system and a powertrain system. The system includes a first screw pump, a second screw pump, and a plurality of check valves. The plurality of check valves is connected to at least one of the first screw pumps and the second screw pump. The plurality of check valves is configured to define a battery circuit for controlling the temperature of the battery system and a powertrain circuit for controlling the temperature of the powertrain system.

Screw pump (2) comprising: a casing (3) with an inlet (30), an outlet (31) and a flow chamber (32) between the inlet and the outlet; at least two screws (4, 5, 6) housed in the flow chamber to force a fluid flow through the flow chamber from the inlet to the outlet; and a flexible coupling (11) connected to one of the screws to couple the screw to a drive motor (10).

The utility model discloses a mixed material fluid pipeline system in the semiconductor industry. The pipeline system comprises a stirring and mixing system, a main line circulating system, an auxiliary line circulating system, a first cache discharging system and a second cache discharging system. According to the utility model, the screw pump is selected, and the screw pump can convey high-viscosity and high-solid-content materials and has strong adaptability to media; a liquid circulation system is designed, so that mixed liquid is in a flowing state all the time; stirring is added in the tank body to prevent mixed materials from precipitating; quick-wear parts adopt surface special substance coatings, so that the wear resistance of the quick-wear parts is improved, and the service life of the quick-wear parts is prolonged; a liquid metering device and a control valve are additionally arranged according to the required precision, and the problem that the mass of the mixture transferred in different containers needs to be measured through a metering device can be solved.

The disclosure relates to a screw pump (2) comprising: a casing (3) with an inlet (30), an outlet (31) and a flow chamber (32) between the inlet and the outlet; and at least two screws (4, 5, 6) housed in the flow chamber to 5 force a fluid flow through the flow chamber from the inlet to the outlet; wherein the casing (3) comprises a shell (33) within which an insert (34) defining the flow chamber is housed.

The invention discloses a novel three-screw pump with a driven screw independently limited, sealed and lubricated, belongs to the technical field of hydraulic delivery pumps, and aims to solve the problems that in an existing three-screw pump working structure, axial force generated by a driving screw and a driven screw is not matched uniformly, and actual use is limited. A convex extension shaft head is integrally manufactured at the rear tail end of a medium inlet low-pressure area of a left driven screw and a right driven screw which are meshed with two sides of a driving screw, a pressure bearing and a mechanical oil seal are mounted on the convex extension shaft head, and a bearing rear end cover is connected to an opening of a rear tailstock through a fixing screw. An inner concave cavity formed by connecting the bearing rear end cover with the rear tailstock, the pressure bearing and the mechanical oil seal alternately form an isolated and independent bearing sealing cavity, and the bearing sealing cavity is filled with lubricating grease for lubricating the pressure bearing. The hydraulic pump is practical in structure and suitable for hydraulic conveying of working media such as high-temperature asphalt with poor lubricating performance.

Eccentric screw pump with a rotor consisting of a drive shaft rotating essentially around a fixed axis relative to the stator in a bearing seat, a power train and a conveying screw which rotates-oscillates in a screw thread of the stator, wherein the conveying screw receives its drive torque via the power train and the power train compensates for the differences in the motion sequences of the conveying screw and the drive shaft, wherein the power train essentially consists of a one-piece rotating body which has multiple weakening recesses interrupting its outer circumferential surface to a greater than negligible extent, which give it the reversible elasticity it needs to rotate around a rotational axis which curves periodically, at least in sections.

Eccentric screw pump with a rotor of a drive shaft circulating essentially about a fixed axis in relation to the stator in a bearing block, a power train and a screw conveyor, which revolves in a rotating-oscillating manner in a screw flight of the stator, wherein the power train provides the screw conveyor with its drive torque and the power train adjusts the differences of the motion sequences of the screw conveyor and of the drive shaft, wherein the power train consists essentially of a one-piece rotational body, which has multiple weakening recesses, which interrupt its outer circumferential jacket surface more than only insignificantly and which provide it with that reversible elasticity, which it requires in order to rotate about an axis of rotation, which curves in a periodically recurring manner at least in sections.

The invention discloses a screw pump remote control system for multi-parameter adjustment and fault pre-diagnosis, relates to the technical field of operation monitoring, and is used for solving the problems of insufficient prediction precision and poor reliability caused by the fact that the driving capability is not matched with pump body parameters and the requirements of an underground direct-drive system on accurate matching and dynamic monitoring of pump body performance are difficult to meet. In order to solve the problem of monitoring range adjustment lag in the prior art, multi-dimensional data in the operation process of the screw pump are collected, key characteristic values, symmetry information, axis offset and surface wear degree are extracted, a key monitoring area is determined, a stability index is calculated, and an index regression algorithm is utilized to calculate a dynamic adjustment coefficient so as to set an initial monitoring range. The operation quality type is evaluated through a double-threshold mechanism, the distance between the working temperature and the key position is collected in the medium and poor state, the feature vector is constructed to be input into the support vector regression model, the monitoring range is dynamically adjusted, intelligent recognition and optimal control over the operation state are achieved, and the equipment stability and prediction capacity are improved.

The invention belongs to the technical field of oil exploitation equipment, and particularly provides a screw pump rotor structure optimization method and system based on wear trajectory quantization, and the method comprises the steps: obtaining the contact conditions of the motion trajectory of feature points on the surface of a rotor and the inner wall of a stator in different angle intervals according to the motion trajectory of the surface of the rotor; calculating the geometric wear strength of each feature point according to the contact condition; and optimizing the rotor structure according to the geometric wear strength so as to homogenize the wear. From the perspective of structure optimization, the problem of uneven wear can be more effectively solved by quantifying the wear track and optimizing the rotor line type in a segmented manner.

The utility model relates to a coating buffer tank which comprises a tank body and a feed liquid buffer structure, and the tank body is provided with a feed port and a feed liquid stirring cavity arranged in the tank body; the feed liquid temporary storage structure is arranged in the tank body, a feed liquid temporary storage space and at least one communicating hole used for keeping static pressure balance in the cavity are formed in the feed liquid temporary storage structure, the feed liquid temporary storage space is communicated with the feed inlet, and the at least one communicating hole is communicated with the feed liquid temporary storage space and the feed liquid stirring cavity; and the feed liquid which enters the feed liquid buffer space from the feed port is supplemented into the feed liquid stirring cavity. During feeding, feed liquid enters the feed liquid buffer space from the feed inlet, the feed liquid in the feed liquid buffer space is supplemented to the feed liquid stirring cavity through the communication hole at the time of stopping feeding, and the liquid level in the feed liquid buffer space is reduced slowly, so that the stability of the liquid level and the stability of static pressure in the feed liquid stirring cavity are ensured; meanwhile, the opening and closing frequency of the feeding electromagnetic valve and the feeding screw pump is reduced, and the stability of the feeding system is guaranteed.

The utility model relates to the technical field of screw pumps, in particular to a screw pump convenient to disassemble and assemble, which comprises a screw pump body, a stator arranged on one side of the screw pump body and an input shaft arranged in an inner cavity of the screw pump body, one side of the input shaft is fixedly connected with a rotor fork seat, a rotor is arranged in the rotor fork seat, and a rotor clamping ring is arranged on the rotor. A limiting assembly used for fixing the rotor is arranged between the rotor clamping ring and the rotor fork seat and comprises a bolt arranged in the rotor fork seat, a clamping plate and a pressing rod are arranged in the bolt, and a hydraulic set is arranged between the clamping plate and the pressing rod. By arranging the limiting assembly, the pressing rod in the bolt can be pushed to enable hydraulic oil in the first push rod to push the second push rod, so that the second push rod pushes the clamping plate to move out of the clamping groove, the bolt can be conveniently and rapidly taken down, limiting and fixing of the bolt to the rotor are omitted, and the rotor can be conveniently detached for maintenance and replacement.

The utility model discloses a multi-stage internal spiral pump driven by a hole type servo motor, which belongs to the technical field of spiral pumps, a stator is matched with a rotor to realize that the rotor drives a rotating sleeve to rotate in a mounting cavity, and when the rotating sleeve and the rotor synchronously rotate, a spiral cavity is formed between a spiral blade in a liquid conveying hole of an internal spiral sleeve and a core shaft; liquid flows from the liquid inlet hole to the circulation hole through the spiral cavity, and then flows to the liquid outlet hole from the circulation hole; the stator and the rotor of the motor, the rotating sleeve related to the screw pump, the inner spiral sleeve and the mandrel are integrated together to form the inner spiral pump of a special structure, the structure of the spiral pump is more compact, the size of the spiral pump is small, the spiral blades are arranged on the inner side wall of the liquid conveying hole of the inner spiral sleeve, and the rotor drives the rotating sleeve and the inner spiral sleeve to rotate. Compared with a conventional pump shaft, the inner spiral sleeve can bear larger twisting force, high-speed liquid conveying of the inner spiral pump is facilitated, and a high-speed high-pressure power source composed of a stator and a rotor can be adapted.

The invention discloses an anti-airlock method and equipment for an electric submersible screw pump based on working condition recognition and a medium, and relates to the technical field of oil exploitation equipment. The method comprises the steps that based on an underground detection device and a ground control cabinet sensor of the electric submersible screw pump unit, operation parameters of the electric submersible screw pump unit are collected in real time, and the operation parameters are preprocessed to obtain standard operation parameters; wherein the operation parameters comprise pump inlet pressure and motor output current; extracting pressure-current correlation characteristics under the airlock working condition to construct an airlock working condition identification model, and inputting the standard operation parameters into the airlock working condition identification model to obtain an airlock state grade; and based on the airlock state grade, the operation regulation and control strategy of the electric submersible screw pump unit is adjusted so as to eliminate the airlock phenomenon. Real-time data of underground and ground sensors are collected, the airlock grade is judged in advance through the airlock working condition recognition model, the operation state is automatically adjusted, and early warning of the airlock is achieved.

The invention discloses a PVDF emulsion demulsification washing process, and relates to the technical field of polymer modified materials. The process aims at effectively removing the residual additive in the polyvinylidene fluoride emulsion so as to improve the purity and the performance of the final product. The process comprises the following steps: firstly, mixing PVDF emulsion with a pre-prepared nano demulsifier, and conveying the mixture to a condensation tower through a screw pump; in the condensation tower, demulsifying the mixed solution at a set temperature, and mechanically stirring by adopting a frame type stirrer to promote the emulsion to be demulsified and form snowflake-shaped particles; and then, the demulsified material is discharged from the bottom of the condensation tower and enters a washing tower, and the residual auxiliary agent is removed by using deionized water in a countercurrent washing manner. And finally, dehydrating and drying the washed material. The method has the advantages that the demulsification and washing processes are optimized, so that the production efficiency is improved, the resource consumption is reduced, and meanwhile, the high purity and excellent performance of the PVDF product are ensured.

The utility model discloses a screw pump with an adjustable shaft seal position structure, which relates to the technical field of screw pumps and comprises a driving screw, a shaft elastic retainer ring is arranged on the outer side of the top of the driving screw and clings to the end of an adjusting shaft sleeve, a sealing gland is fixedly connected to the outer side of the driving screw, and the sealing gland is fixedly connected to the outer side of the driving screw. A bearing seat is arranged at the end, close to the front end cover, of the sealing gland, a screw is in threaded connection with the end, away from the front end cover, of the sealing gland, the bearing seat is in threaded connection with the sealing gland through the screw, and a bearing is arranged at the bottom of the end, close to the front end cover, of the driving screw. Wherein an O-shaped sealing ring groove is formed in the outer surface of the bottom of the driving screw rod, an elastic check ring groove for a hole is formed in the outer surface of the top of the driving screw rod, an adjusting shaft sleeve is arranged on the outer side of the driving screw rod, and the technical problems that the sealing replacement process is tedious, only one sealing material can be selected, and many limitations exist are solved.

The invention relates to the field of tunnel surrounding rock fracture reinforcement and oil and gas development, and provides a particle migration simulation device and method considering graded confining pressure and a fracture network morphology. The device comprises a stirring tank, a feeding machine, a screw pump and a fracture module, and the output end of the feeding machine is connected with an inlet of the stirring tank; the outlet of the stirring tank is connected with the input end of the screw pump through a control valve, the output end of the screw pump is connected with the inlets of the crack modules through the first electromagnetic flow meter, a gate valve is arranged between each crack module inlet and the first electromagnetic flow meter, and the outlet of each crack module is connected with the waste liquid tank through the second electromagnetic flow meter; the crack module comprises four sub-modules, namely a general crack module, a variable-crack-width crack module, a rough crack module and a closed crack module, and each sub-module is provided with a camera. According to the method, the more accurate migration rule of the particle material in the crack can be obtained, a particle slurry pumping scheme can be better designed in actual engineering production, and the production cost is reduced.

The invention provides an oil and gas reservoir fluid high-pressure physical property testing device and method, and belongs to the field of oil and gas field development, the device is composed of a constant temperature box, a PVT kettle body, a screw pump, a piston, a camera, a light source module and a stirrer, the PVT kettle body is placed in the constant temperature box, the PVT kettle body is made of a transparent material, a cylindrical inner cavity is formed in the PVT kettle body, and the screw pump is arranged in the inner cavity; a first guide hole and a second guide hole are respectively formed in the upper part and the lower part of the inner cavity to form a channel for fluid to enter and exit from the PVT kettle body, the piston is arranged in the inner cavity, the screw pump is connected with the piston, the stirrer is arranged in the inner cavity, the camera is arranged outside the constant-temperature box, and the light source module is arranged inside the constant-temperature box. The method is implemented through the testing device and comprises a high-pressure fluid sample transfer test and a single degassing test. According to the device and the method provided by the invention, the high-pressure physical property parameters of the fluid can be accurately measured by a small amount of samples, and key technical indexes are provided for oil-gas field development.

The utility model discloses a screw pump with a laminated shaft seal structure, which relates to the technical field of screw pumps and comprises a screw pump body, a driving screw is arranged at one end of the screw pump body, one end of the screw pump body provided with the driving screw is connected with a bearing seat, one side of the bearing seat is movably connected with a sealing gland, and the other side of the bearing seat is provided with a shaft seal. A plurality of groups of sealing base plates are arranged between the sealing gland and the bearing seat in a stacked mode, the whole effective sealing time is prolonged by multiple times by adopting the multiple shaft seals to be used alternately, shaft seal materials can be selected, the shaft seals made of different materials are adopted, and the medium adaptability and the sealing effect can be more superior and more obvious. By means of the sealing gasket, the shaft seal can be adjusted on the premise that general assembly parts such as a motor and a coupler do not need to be disassembled, maintenance operation is simplified, and maintenance cost is saved.

The utility model discloses a screw pump stator protection mechanism which is arranged on a suction chamber of a screw pump, the suction chamber is fixed on a base, a discharging barrel is arranged on the base, a first flange plate is arranged on the suction chamber, a second flange plate is arranged on the discharging barrel, and the first flange plate and the second flange plate are fixed on the base. The screw pump stator protection mechanism is composed of two half-cylinder structures, arc-shaped flange structures are formed at the two ends of each half-cylinder structure respectively, the arc-shaped flange structures are locked on the first flange plate and the second flange plate through first screw assemblies respectively, a rubber stator is arranged in the screw pump stator protection mechanism, and the rubber stator is arranged in the screw pump stator protection mechanism. The rubber stator is formed by splicing two semicircular rubber cylinders; the problems that one end of an existing stator cylinder is connected with a suction chamber, the other end of the existing stator cylinder is connected with a discharging pipe, and when an internal rubber stator needs to be replaced, the whole discharging pipe needs to be detached from the stator cylinder, and operation is very tedious are solved.

The invention provides a vacuum screw pump set control method. The method comprises the steps that a target value of the needed vacuum degree is input; obtaining an actual value of the vacuum degree of the equipment; obtaining a comparison result of the target value and the actual value; and according to the comparison result, the control system regulates and controls the operation frequency of the screw pump and the operation frequency of the roots pump. Compared with a single-frequency-conversion control method in the prior art, a double-frequency-conversion control method is adopted in the control method, the operation frequency of the screw pump and the operation frequency of the roots pump are controlled at the same time, so that the pumping speed range of the vacuum screw pump set is greatly expanded, and the pumping speed of the vacuum screw pump set is greatly increased through the control method under the condition that a pump body is not replaced. And the pumping speed adjusting range of an original pump set is expanded, so that the pump set can meet more pumping speed adjusting requirements, and an existing upgraded crystal pulling production process is further matched. And according to the comparison result of the actual value and the target value, a corresponding adjustment program is made, so that the vacuum degree in the equipment cavity can meet the requirement, and errors are reduced.

The invention discloses an underground intelligent oil extraction pump and system. The oil extraction pump comprises a plurality of sensors, and an oil pipe, a screw pump, a motor, a gas-liquid separation device and a sand-washable gas anchor which are connected from top to bottom, the sensor is used for collecting underground environment data and motor working state data; the controller is used for acquiring and encoding data acquired by the sensor, receiving a control instruction and sending a corresponding control signal to the motor; the motor drives the screw pump to work according to working parameters indicated by the control signal; the screw pump is used for pumping oil-containing liquid in the well through an oil pipe or pumping cleaning liquid on the well into the well through the oil pipe; the system comprises an underground intelligent oil extraction pump and a ground control cabinet, the ground control cabinet is used for receiving the coded data transmitted by the controller, monitoring the underground working condition and controlling the working state of the motor according to the monitoring result. The oil extraction pump and the system effectively prolong the pump inspection period, save manpower resources, effectively reduce abnormal working conditions in a well, and prolong the service life of the oil extraction pump.

The utility model discloses a wireless underground liquid level monitoring screw pump, which belongs to the technical field of screw pumps and comprises a tubular column, a stator and a rotor which are arranged in the tubular column and used in cooperation, a hollow sucker rod arranged on the upper portion of the rotor, an oil pipe arranged on the upper portion of the stator, and a liquid outlet tee joint arranged on the top surface of the tubular column. A ground driving device is arranged above the ground wellhead, a universal rotating joint is arranged at the top of a polish rod of the hollow sucker rod, the rotor is of a hollow structure, a built-in storage pressure gauge is arranged in the rotor, a lifting assembly is arranged above the built-in storage pressure gauge, and a limiting device is arranged at the bottom of the rotor. Ground liquid is injected into the bottom of the rotor and below the rotor through the interior of the hollow sucker rod, the liquid inlet end of the pump is scoured, pulverized coal at the liquid inlet and in the immediate vicinity of a wellbore is diluted, and liquid can be supplemented to the stratum; chemicals are added into the underground through the hollow sucker rod according to the stratum condition, and chemical agent scale inhibition is carried out; data can be read without moving a tubular column, and the pressure sensor can be rapidly replaced.