An intelligent ceramic rotary valve

Abstract

The present invention relates to the field of pipelines, and in particular to an intelligent ceramic rotary valve, comprising a valve body, a bushing and a power mechanism, wherein the bushing is a ceramic bushing, comprising a rotating bushing and a fixed bushing, the inner cavities of the rotating bushing and the fixed bushing are connected to form a conveying lumen; the rotating bushing is transmission-connected to the power structure; a booster rod and a cleaning blade are installed on the inner wall of the rotating bushing, the booster rod is axially arranged on the inner wall of the rotating bushing, one side of the cleaning blade is installed on the booster rod, and the other side is provided with a cleaning slope and in contact with the inner wall of the rotating bushing, so that blockages on the pipe wall can be removed in time to continuously prevent blockage; an information collection module is arranged on the valve body, the information collection module is connected to the input end of the control unit, and the output end of the control unit is respectively connected to the output terminal device and the cloud service platform, the control unit analyzes and organizes the collected information, obtains the operating status of each valve body in real time, and collects and uploads the information to the cloud for the enterprise, provides cloud data sharing and value-added services for the enterprise, and realizes system intelligence.

Description

Technical Field

[0001] The present invention relates to the technical field of pipeline equipment, and in particular to an intelligent ceramic rotary valve. Background Art

[0002] When the conveying pipe for the conveying medium is at a bend, an inclined pipe or a connection, the conveying medium is likely to accumulate inside the pipe, causing blockage. Specifically: when the conveying medium is a powder, the powder is prone to caking when it gets wet, especially in rainy weather, and the caked powder adheres to the inner wall of the pipe, causing blockage; when the conveying medium is a slurry, crystallization, gelation and lumping will occur. For example, the slurry crystallizes itself under the influence of concentration and temperature; under the influence of temperature and the like, the molecules in the slurry combine with each other to form macromolecules, generating a colloid mass. For example, there are hundreds of mixtures after the acid-base mixing reaction in a chemical plant, and gelation is extremely likely to occur; in addition, for a highly corrosive slurry with strong acidity or alkalinity, the stronger the acidity or alkalinity of the slurry, the easier it is to form lumps, thus causing pipeline blockage. When blockage occurs in the pipeline due to caking of the powder or crystallization, gelation and lumping of the slurry in the pipeline, currently, a hammer is mainly used to knock hard on the outer wall of the pipe to shatter the blocked object to achieve the effect of dredging. When the blockage is serious, the pipe wall is even cut open to clean the blocked object on the inner wall of the pipeline. The operation is time-consuming and laborious, causing great damage to the conveying pipeline, resulting in a short service life of the conveying pipeline, a high replacement frequency, and a high conveying cost. Summary of the Invention

[0003] The purpose of the present invention is to provide an intelligent ceramic rotary valve to solve the problem of pipeline blockage caused by caking of the powder or crystallization, gelation and lumping of the slurry in the pipeline in the prior art. The intelligent ceramic rotary valve has a novel structure, can timely remove and scrape off the blockages such as scars, crystallization and gelation of the slurry and powder on the pipe wall, continuously prevent blockage, and can obtain the operating status of each valve body in real time and collect and upload it to the cloud in the unit of an enterprise, providing cloud data sharing and value-added services for the enterprise, and realizing system intelligence.

[0004] To solve the above problems, an intelligent ceramic rotary valve involved in the present invention adopts the following technical solutions:

[0005] An intelligent ceramic rotary valve, comprising a valve body, a bushing installed inside the valve body, and a power mechanism. The bushing is a ceramic bushing, which includes a rotating bushing in the middle and fixed bushings coaxially arranged at both ends of the rotating bushing. The inner cavities of the rotating bushing and the fixed bushings communicate with each other to form a conveying pipe cavity. The two fixed bushings are respectively located at the material receiving end and the material feeding end of the conveying pipe cavity; a transmission gear ring is sleeved outside the rotating bushing, and the transmission gear ring is in transmission connection with the power structure, enabling the rotating bushing to rotate relative to the fixed bushing; a cleaning and shoveling assembly is installed on the inner wall of the rotating bushing. The cleaning and shoveling assembly includes a boosting rod and a cleaning and shoveling blade. The boosting rod is axially arranged on the inner wall of the rotating bushing. The cleaning and shoveling blade is an arc-shaped blade bent towards the central axis, and one side of the cleaning and shoveling blade is installed on the boosting rod, and the other side of the cleaning and shoveling blade is provided with a cleaning and shoveling slope surface, and the end of the cleaning and shoveling slope surface is in contact with the inner wall of the rotating bushing.

[0006] Preferably, the above-mentioned valve body includes two symmetrically buckled main shells, so that a valve pipe and a valve cavity with parallel central axes are respectively formed inside the valve body. An intermediate shell is clamped between the two main shells, so that an annular gap is left on the pipe wall of the valve pipe, and the valve pipe and the valve cavity communicate with each other through the annular gap; the bushing is sleeved inside the valve pipe, so that the transmission gear ring sleeved outside the rotating bushing is arranged in the annular gap, and a power output gear meshing with the transmission gear ring is installed in the valve cavity.

[0007] Preferably, one end of the above-mentioned fixed bushing is provided with a stepped hole, the end face of the rotating bushing is pressed against the end face of the stepped hole, and the side wall of the rotating bushing is pressed against the vertical face of the stepped hole.

[0008] Preferably, the above-mentioned power mechanism includes a motor and a speed reducer. The output shaft of the speed reducer is connected to the axle of the power output gear, and the motor rotates to drive the transmission gear ring and the rotating bushing to rotate.

[0009] Preferably, the above-mentioned motor is electrically connected to a control unit. The motor is connected to the control unit, and the control unit outputs a shutdown / start signal to the motor after the motor has continuously worked / rested for a set time; an information acquisition module is also arranged on the valve body. The output end of the information acquisition module is connected to the input end of the control unit, and the output end of the control unit is respectively connected to an output terminal device and a cloud service platform.

[0010] Preferably, the above-mentioned power mechanism includes a rotating rod and a manual crank. The inner end of the rotating rod is connected to the axle of the power output gear, and the manual crank rotates to drive the transmission gear ring and the rotating bushing to rotate.

[0011] Preferably, the above-mentioned cleaning and shoveling assembly includes 1-3 groups evenly arranged on the inner wall of the bushing.

[0012] Preferably, a card body with a slot is provided on the inner wall of the rotating bushing, a limiting card block is mounted on the booster rod, and the booster rod is positioned in the slot through the limiting card block; and a limiting boss is provided at the position of the limiting card block at the material receiving end of the conveying tube cavity.

[0013] Preferably, the above-mentioned booster rod is respectively provided with cleaning blades at the material-receiving end and the material-feeding end of the conveying tube cavity, wherein the length of the cleaning blade at the material-receiving end of the conveying tube cavity is smaller than the length of the cleaning blade at the material-feeding end of the conveying tube cavity, and the width of the cleaning blade at the material-receiving end of the conveying tube cavity is larger than the width of the cleaning blade at the material-feeding end of the conveying tube cavity.

[0014] Preferably, a ceramic anti-corrosion layer is sprayed on the surface of the cleaning blade.

[0015] The beneficial effects of the present invention are as follows:

[0016] 1. Strong cleaning force. By installing the intelligent ceramic rotary valve at the connection or bend of the conveying pipe, the cleaning blade is in the shape of an inward curved arc and its end directly touches the inner wall of the conveying pipe. The arc-shaped blade itself is elastic. When the cleaning blade rotates, the slope at its end can provide a large force to remove the blockage on the inner wall of the conveying pipe, so that the blockage is transported backward together with the conveying medium under the action of gravity.

[0017] 2. The structure is novel. Based on the rotation function, the inner lining of the valve tube is designed as a three-section sleeve. The middle rotating sleeve and the fixed sleeves at both ends can produce relative movement, thereby structurally ensuring that the two ends of the valve can be fixedly connected to the ends of the conveying pipe, and the middle part of the valve can realize independent rotation function.

[0018] 3. Ceramics have the characteristics of strong corrosion resistance, high temperature resistance, high hardness and wear resistance. The ceramic bushing used as the inner lining of the valve body can be applied to the pipelines of various media (powders, slurries, acidic and alkaline corrosive liquids, etc.), which can protect the outer shell of the valve body from corrosion and increase the life of the valve body. In addition, the ceramic itself is self-lubricating. When the rotating inner lining rotates relative to the fixed inner lining, it does not need to inject grease to maintain good rotation.

[0019] 4. Continuous anti-blocking, using electric drive to rotate the rotating bushing, the program set in the controller can automatically and regularly clean the pipe wall blockage, so that the blockage cannot accumulate in the pipe to form a larger blockage, thereby improving the overall operating efficiency and safety of the equipment.

[0020] 5. System intelligence: The unit modules inside the controller analyze and sort out the operation status information of each valve collected. When unexpected situations such as valve damage occur, the alarm will sound, and workers can remotely capture the abnormal conditions of each valve in real time to avoid major damage accidents in a timely manner. At the same time, data is collected and uploaded to the cloud in the unit of the enterprise, and aggregated into industrial big data, providing cloud data sharing and value-added services for each enterprise to realize the intelligence of the entire system. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for description in the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0022] Figure 1 Schematic diagram of the overall structure of the present invention.

[0023] Figure 2 Schematic diagram of the valve body in the state without the bushing installed.

[0024] Figure 3 Assembly drawing of the main housing and the intermediate housing.

[0025] Figure 4 Assembly drawing of the rotating inner lining and the fixed inner lining.

[0026] Figure 5 Schematic diagram of the internal transmission structure of the present invention.

[0027] Figure 6 Schematic diagram of the cleaning component.

[0028] Figure 7 Schematic diagram of the cleaning blade.

[0029] Figure 8 Schematic diagram of the working state of the present invention.

[0030] Figure 9 Schematic diagram of Embodiment 2.

[0031] Figure 10 Schematic diagram of the control system module.

[0032] Description of the reference numerals in the drawings: 1 - valve body, 101 - main housing, 102 - intermediate housing, 103---annular gap, 2 - bushing, 201 - fixed bushing, 202 - rotating bushing, 203 - conveying pipe cavity, 204 - stepped hole, 3 - transmission gear ring, 4 - power output gear, 5 - cleaning component, 501 - boosting rod, 502 - cleaning blade, 503 - cleaning slope, 6 - motor, 7 - speed reducer, 8 - rotating rod, 9 - manual crank, 10 - clamping body, 11 - limiting block, 12 - limiting boss, 13 - conveying pipeline. Detailed implementation mode

[0033] In order to make the technical objectives, technical solutions and beneficial effects of the present invention clearer, the technical solutions of the present invention will be further described below with reference to the drawings and specific embodiments.

[0034] Embodiment 1: An intelligent ceramic rotary valve, as Figures 1-10 shown, includes a valve body 1. The valve body includes two main housings 101 and an intermediate housing 102. The intermediate housing is located between the two main housings. Flange end faces are integrally provided at the outer ends of the two main housings for connecting the conveying pipeline 13. The inner ends of the two main housings 101 are respectively symmetrically bolted on both sides of the intermediate housing 102. In this way, a valve pipe and a valve cavity are respectively formed in the valve body. The central axes of the valve pipe and the valve cavity are parallel to each other. Since the intermediate housing 102 is sandwiched between the two main housings 101, an annular gap 103 can just be formed on the wall of the valve pipe. The width of the annular gap is equal to the width of the intermediate housing 102, so that the valve pipe and the valve cavity are kept in communication with each other through the annular gap 103. The purpose of this design is to ensure that the transmission mechanism in the valve cavity can transmit power to the bushing 2 in the valve pipe.

[0035] In order to ensure that the bushing 2 can be driven by the transmission mechanism to achieve free rotation, the bushing is designed to be three-section, namely the rotating bushing 202 in the middle and the fixed bushings 201 at both ends, wherein the fixed bushing is precisely machined and fixed to the inner wall of the valve tube, and step holes 204 are respectively provided at the opposite ends of the two fixed bushings 201, and the two end faces of the rotating bushing 202 are respectively pressed against the end faces of the step holes 204, so that the side walls of the rotating bushing 202 close to the two end faces are just pressed against the vertical surface of the step holes 204, so that the rotating bushing 202 is coaxially sleeved in the step holes of the two fixed bushings 201, and the inner cavities of the rotating bushing and the fixed bushing are interconnected to form a conveying tube cavity 203, and the two fixed bushings 201 are respectively located at the material receiving end and the material feeding end of the conveying tube cavity 203, to ensure that the rotating bushing 202 has the freedom of rotation direction. A transmission gear ring 3 is precisely machined onto the outside of the rotating sleeve 202, and the transmission gear ring 3 is located in the annular gap 103 of the valve tube formed by the two main shells 101, ensuring that the transmission gear ring 3 can rotate freely in the annular gap 103; a bearing seat is installed on the wall of the valve cavity, and the transmission shaft passes through one side of the bearing seat and extends out of the valve cavity and is connected to the output shaft of the reducer 7. The reducer 7 is connected to the motor 6 for transmission. A power output wheel is installed on the transmission shaft in the valve cavity, and the power output gear and the transmission gear ring are meshed with each other. When the motor is started, the power output gear 4 drives the transmission gear ring 3 to rotate, thereby driving the rotating sleeve 202 to rotate, so as to realize the rotation of the cleaning shovel assembly 5 on the inner wall of the rotating sleeve.

[0036] In this embodiment, the bushing 2 is a ceramic bushing. On the one hand, ceramic itself has the characteristics of strong corrosion resistance, high temperature resistance, high hardness and wear resistance. The use of ceramic bushings as the bushings of the valve body can be applied to the conveying pipeline 13 of various media (powders, slurries, acidic and alkaline corrosive liquids, etc.), protect the valve body shell from corrosion, and increase the life of the valve body. On the other hand, the ceramic itself is also self-lubricating. When the rotating liner 202 rotates relative to the fixed liner, it does not need to inject grease to maintain good rotation.

[0037] The cleaning component 5 includes a boosting rod 501 and a cleaning blade 502. A clamping body 10 is integrally fixed on the inner wall of the rotating bushing 202. There is a clamping groove on the clamping body. A limit clamping block 11 is sleeved in the middle of the boosting rod 501. The limit clamping block is precisely machined and clamped in the clamping groove (or fixed by a set screw), so as to fix the boosting rod 501 on the clamping body 10 of the rotating inner liner 202, and make the boosting rod 501 rotate synchronously with the rotating bushing 202. Since the conveying medium is always conveyed from the feeding end to the discharging end, in order to prevent the boosting rod 501 from being pushed by the conveying medium and causing displacement, a limit boss 12 is integrally provided at the position of the limit clamping block 11 at the feeding end of the conveying pipe cavity 203. When the conveying medium always moves towards the discharging end, the limit boss 12 blocks on the side of the limit clamping block 11, and can prevent the boosting rod 501 from being pushed by the conveying medium and causing displacement. Two cleaning blades 502 are respectively installed on each rotating push rod 501 (respectively at the feeding end of the conveying pipe cavity 203 and the discharging end of the conveying pipe cavity 203). The cleaning blade is an arc-shaped piece, and the arc-shaped piece is bent towards the central axis direction. One side of the cleaning blade 502 is installed on the boosting rod 501, and the other side of the cleaning blade 502 is provided with a cleaning slope 503 with a gradually decreasing thickness. The end of the cleaning slope is in contact with the inner wall of the rotating bushing 202. Since the arc-shaped blade itself has elasticity, there is always a small interaction force between the cleaning slope 503 and the inner wall of the rotating bushing 202, ensuring that the end of the cleaning slope 503 is in close contact with the inner wall of the rotating bushing 202. When the cleaning blade 502 rotates, the cleaning slope 503 at its end can provide a large shoveling force to remove the blockage on the inner wall of the conveying pipe cavity 203, so that under the action of gravity, the blockage is conveyed backward together with the conveying medium.

[0038] This valve part is mainly installed at the turning, inclined pipe and connecting pipe of the conveying pipeline 13 where the conveying medium is likely to accumulate. Therefore, before entering the conveying pipe cavity 203, the flow direction of the conveying medium will suddenly change, and when flowing out of the conveying pipe cavity 203, the flow direction of the conveying medium does not change. So the conveying medium has a large impact force on the conveying pipeline in the front section of the conveying pipe cavity, and will continuously hit the rotating cleaning blade 502. In order to reduce the destructive force of this impact force on the cleaning blade, as Figure 6 shown, the length a of the cleaning blade 502 at the feeding end of the conveying pipe cavity 203 is actually smaller than the length a' of the cleaning blade at the discharging end of the conveying pipe cavity. The width b of the cleaning blade 502 at the feeding end of the conveying pipe cavity 203 is also larger than the width b' of the cleaning blade at the discharging end of the conveying pipe cavity. In this way, the cleaning blade 502 at the feeding end of the conveying pipe cavity 203 is short and wide, with high strength and large bearing capacity of the cleaning blade. The cleaning blade 502 at the discharging end of the conveying pipe cavity 203 is long and narrow, ensuring a large scraping area and high efficiency. And a ceramic anti-corrosion layer is sprayed on the outer surface of the cleaning blade by plasma spraying or supersonic spraying, so as to improve the corrosion resistance, wear resistance and high temperature resistance of the cleaning blade.

[0039] In actual production, due to different conveying media and different pipe bending angles, the rotation speeds of the cleaning blades 502 should be adjusted flexibly. That is, the rotation speeds of the motors 6 of each valve body should be determined respectively according to the medium and the pipe inclination angle. Therefore, each motor 6 is electrically connected to the controller. As Figure 10 shown, a timing module is preset in the controller to achieve the intermittent rotation of the motor: the controller outputs a shutdown signal to the motor after the motor has been continuously working for a set time, and the corresponding cleaning blade 502 stops working. After the motor has been continuously resting for a set time, the controller outputs an opening signal to the motor, and the corresponding cleaning blade 502 starts working again. On the premise of meeting the automatic anti-blocking function, energy is saved and the valve body is protected.

[0040] In addition, a pressure sensor, a temperature sensor, a flow sensor, etc. are respectively arranged on each valve body. Each sensor is connected to the input end of the controller. The sensor converts the collected signal into a digital signal and transmits it to the controller. After the controller reads it, it is converted into the pressure, temperature, medium flow rate, etc. inside each valve body and the information of abnormal valve component operation, which is presented on the display of the terminal device. In this way, through one controller, the states of each valve body in the entire conveying pipeline system can be obtained in real time, and the real-time monitoring of the working process of each valve body in the entire conveying pipeline system can be realized. In addition, the output end of the controller is electrically connected to the alarm. When an accident such as valve component damage occurs, the alarm beeps, and the worker can remotely capture the abnormal conditions of each valve in real time to avoid a large damage accident in time. At the same time, the output end of the controller is also connected to the cloud service platform. The unit modules inside the controller analyze and sort out the collected information, collect it on the cloud in the unit of the enterprise, and converge it into industrial big data, providing cloud data sharing and value-added services for each enterprise to better realize the intelligence of the entire system. In this way, it is realized that one terminal controller matches multiple terminals, and the valves can be sold and used separately, or bundled with the system cloud service to realize an intelligent valve system.

[0041] In addition, according to different conveying media, the cleaning component 5 can be 1-3 groups evenly arranged on the inner wall of the bushing 2 to adjust the cleaning strength.

[0042] Embodiment 2: An intelligent ceramic rotary valve in this embodiment will be described centering on the differences from those in Embodiment 1.

[0043] When there are cost requirements or space limitations in the small-scale conveying pipeline 13, the motor rotation can be replaced by manual rotation, as Figure 9As shown, in this embodiment, the power mechanism includes a rotating rod 8 and a manual crank 9. The inner end of the rotating rod 8 is connected to the axle of the power output gear 4. By rotating the manual crank 9, the transmission gear ring 3 and the rotating bushing 202 are driven to rotate, and workers periodically rotate the manual crank 9 to periodically clean the inner wall of the conveying pipeline 13.

[0044] Finally, it should be noted that the above embodiments are only used to illustrate rather than limit the technical solutions of the present invention. However, the protection scope of the present invention is not limited thereto. Any equivalent replacement of the present invention and any modification or partial replacement without departing from the spirit and scope of the present invention shall be covered within the protection scope of the claims of the present invention.

Claims

1. An intelligent ceramic rotary valve, characterized in that: It includes a valve body, a bushing installed in the valve body and a power mechanism. The bushing is a ceramic bushing. The bushing includes a rotating bushing in the middle and fixed bushings coaxially arranged at both ends of the rotating bushing. The inner cavities of the rotating bushing and the fixed bushing are interconnected to form a conveying lumen. The two fixed bushings are respectively located at the material receiving end and the material feeding end of the conveying lumen. A transmission gear ring is inherently arranged on the outer sleeve of the rotating bushing. The transmission gear ring is connected to the power structure in a transmission manner so that the rotating bushing can rotate relative to the fixed bushing. A cleaning shovel assembly is installed on the inner wall of the rotating bushing. The cleaning shovel assembly includes a booster rod and a cleaning shovel blade. The booster rod is arranged along the axial direction. The cleaning blade is arranged on the inner wall of the rotating bushing, and the cleaning blade is an arc-shaped blade bent toward the central axis, and one side of the cleaning blade is installed on the booster rod, and a cleaning slope is arranged on the other side of the cleaning blade, and the end of the cleaning slope is in contact with the inner wall of the rotating bushing. A card body with a slot is arranged on the inner wall of the rotating bushing, and a limiting card block is mounted on the booster rod, and the booster rod is in the slot through the limiting card block; and the limiting card block is provided with a limiting boss at the position of the material-facing end of the conveying pipe cavity, and the valve body includes two symmetrically buckled main shells, so that a valve pipe and a valve cavity with parallel central axes are formed in the valve body respectively, An intermediate shell is sandwiched between the two main shells, so that an annular gap is left on the tube wall of the valve tube, and the valve tube and the valve cavity are connected with each other through the annular gap; the bushing is sleeved in the valve tube, so that the transmission gear ring sleeved outside the rotating bushing is set in the annular gap, and a power output gear meshing with the transmission gear ring is installed in the valve cavity. The power mechanism includes a motor and a reducer, and the output shaft of the reducer is connected to the axle of the power output gear. The rotation of the motor drives the transmission gear ring and the rotating bushing to rotate. The motor is connected to the control unit, and the control unit outputs a shutdown signal after the motor continues to work / rest for a set time. / Open signal to the motor; an information acquisition module is also provided on the valve body, the output end of the information acquisition module is connected to the input end of the control unit, and the output end of the control unit is respectively connected to the output terminal device and the cloud service platform, and the booster rod is respectively installed with cleaning blades at the material-facing end and the feeding end of the conveying tube cavity, wherein the length of the cleaning blade located at the material-facing end of the conveying tube cavity is smaller than the length of the cleaning blade located at the feeding end of the conveying tube cavity, and the width of the cleaning blade located at the material-facing end of the conveying tube cavity is larger than the width of the cleaning blade located at the feeding end of the conveying tube cavity, and the surface of the cleaning blade is sprayed with a ceramic anti-corrosion layer.

2. The intelligent ceramic rotary valve according to claim 1, wherein: One end of the fixed bushing is provided with a step hole, the end surface of the rotating bushing is pressed against the end surface of the step hole, and the side wall of the rotating bushing is pressed against the vertical surface of the step hole.

3. An intelligent ceramic rotary valve according to claim 1, characterized in that: The cleaning shovel assembly includes 1-3 groups evenly arranged on the inner wall of the bushing.

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