Sample taking and sending system for boiler pulverized coal

Abstract

The invention relates to a sampling and sample feeding system for boiler pulverized coal, which comprises a sampling and sample feeding assembly, a driving assembly and a sampling pipe, the sampling and sample feeding assembly comprises a sampling mechanism arranged on the outer side of a sampling port and a sample feeding mechanism arranged on the outer side of a sample feeding port, and the sampling mechanism comprises a sampling sleeve for accommodating the sampling pipe and a first push-pull piece arranged in the sleeve; the first push-pull piece is detachably connected with the sampling tube and is used for driving the sampling tube to sample through the sampling port; the sample feeding mechanism comprises a sample feeding sleeve for accommodating the sampling tube and a second push-pull piece arranged in the sleeve, and the second push-pull piece is detachably connected with the sampling tube and is used for driving the sampling tube to feed a sample through the sample feeding port; the driving assembly is configured to be capable of driving the first push-pull piece and / or the second push-pull piece to reciprocate so as to facilitate sampling or sample feeding of the sampling pipe. Therefore, the detected pulverized coal is conveyed back into the coal conveying pipeline through the sampling and sample conveying assembly, the situation that the detected pulverized coal is mixed with the pulverized coal pipe which does not enter the boiler is avoided, and the sampling and detecting accuracy is improved.

Description

Technical Field

[0001] The present disclosure relates to the technical field of boiler coal powder pipeline sampling, and in particular to a sampling system for boiler coal powder. Background Art

[0002] When conveying pulverized coal, the pulverized coal pipeline usually transports it from bottom to top. The pulverized coal is usually transported from the bottom to the destination such as the combustion chamber by the flow force of air or other gases. Therefore, the pulverized coal pipeline is generally designed to transport from bottom to top to ensure that the pulverized coal reaches the designated location stably for combustion or other treatment. The relevant technology only extracts the pulverized coal. After the pulverized coal detection is completed, the pulverized coal cannot be transported back to the boiler pulverized pipe. The pulverized coal that has been detected can only be mixed with the pulverized coal that has not entered the boiler pulverized pipe, thereby affecting the accuracy of subsequent sampling and detection. Summary of the invention

[0003] The purpose of the present disclosure is to provide a sampling and delivery system for boiler coal powder, which can achieve non-interference sampling and delivery, improve sampling and detection accuracy, and at least partially solve the problems in the related art.

[0004] In order to achieve the above-mentioned purpose, the present disclosure provides a sampling and delivery system for boiler coal powder, which is used for a coal transportation pipeline, wherein the coal transportation pipeline includes a sampling port and a sample delivery port arranged at intervals along the coal transportation direction, and the sampling port is located below the sample delivery port, and includes: a sampling and delivery assembly, a driving assembly and a sampling tube, wherein the sampling and delivery assembly includes a sampling mechanism arranged outside the sampling port and a sample delivery mechanism arranged outside the sample delivery port, the sampling mechanism includes a sampling sleeve for accommodating the sampling tube and a first connecting member arranged in the sampling sleeve, the first connecting member is detachably connected to the sampling tube located in the sampling sleeve; the sample delivery mechanism includes a sample delivery sleeve for accommodating the sampling tube and a second connection arranged in the sample delivery sleeve, the second connection is detachably connected to the sampling tube located in the sample delivery sleeve and is used to drive the sampling tube to deliver samples through the sample delivery port; the driving assembly is configured to be able to drive the first connecting member and / or the second connecting member to reciprocate so as to facilitate sampling or sample delivery of the sampling tube.

[0005] Optionally, the first end of the sampling sleeve is closed and the second end is connected to the sampling port, the sampling sleeve includes a first opening provided on the outer periphery of the sampling sleeve and a first accommodating chamber for accommodating the sampling tube, the first connecting piece is provided in the first accommodating chamber, the first connecting piece is provided with a first connecting point toward the first end of the sampling sleeve, the first end of the sampling sleeve is provided with a first through hole, and the first output end of the driving assembly is fixedly connected to the first connecting point through the first through hole; the first connecting end of the sample delivery sleeve is closed and the second connecting end is connected to the sample delivery port, the sample delivery sleeve includes a second opening provided on the outer periphery of the sample delivery sleeve and a second accommodating chamber for accommodating the sampling tube, the second connecting piece is provided in the second accommodating chamber, the second connecting piece is provided with a second connecting point toward the first connecting end of the sample delivery sleeve, the first connecting end of the sample delivery sleeve is provided with a second through hole, and the second output end of the driving assembly is fixedly connected to the second connecting point through the second through hole.

[0006] Optionally, a first connecting portion is provided on the outer periphery of the first connecting member, a first matching portion matching with the first connecting portion is provided on the inner side wall of the sampling sleeve, one of the first connecting portion and the first matching portion is a first protrusion, and the other is a first sliding groove; A second connecting portion is provided on the outer periphery of the second connecting piece, and a second matching portion matching with the second connecting portion is provided on the inner side wall of the sample delivery sleeve. One of the second connecting portion and the second matching portion is a second protrusion, and the other is a second slide groove.

[0007] Optionally, the sampling tube is a ferromagnet, and the first connecting member and the second connecting member are both provided with a first magnet block that cooperates with the ferromagnet, so that the sampling tube can be detachably connected to the first connecting member and the second connecting member by magnetic attraction.

[0008] Optionally, the driving assembly includes a driver, a first actuator and a second actuator, the driver is fixedly mounted on the outer wall of the coal conveying pipeline, the first actuator passes through the first through hole and is fixedly connected to the first mounting point, the second actuator passes through the second through hole and is fixedly connected to the second mounting point, the first actuator and the second actuator are both connected to the output end of the driver, so that the driver drives the first actuator to drive the first connecting member to move back and forth to allow the sampling tube to take samples and / or the driver drives the second actuator to move back and forth to facilitate the sampling tube to deliver samples.

[0009] Optionally, the drive assembly further comprises a shell and a main shaft, the shell being located between the sampling port and the sample delivery port, the driver being fixedly arranged on one side of the shell, the two ends of the main shaft being rotatably connected to the shell respectively, the first actuator and the second actuator being connecting ropes, the main shaft being transmission-connected to the output end of the driver, the main shaft being provided with a first fixing position connected to the first actuator and a second fixing position connected to the second actuator, the first actuator being partially wound around the main shaft and the outer end of which passes through the shell and is fixedly connected to the first mounting point, the second ... The first actuator is on the main shaft and the outer end passes through the shell and is fixedly connected to the second mounting point. The winding direction of the first actuator and the main shaft is opposite to the winding direction of the second actuator and the main shaft. A first elastic member is sleeved on the outer periphery of the first actuator between the first connecting member and the first end of the sampling sleeve, and a second elastic member is sleeved on the outer periphery of the second actuator between the second connecting member and the first end of the sample delivery sleeve. The first elastic member is used to provide elastic force to facilitate the sampling tube to pass through the sampling port for sampling, and the second elastic member is used to provide elastic force to facilitate the sampling tube to pass through the sample delivery port for sample delivery.

[0010] Optionally, the sampling tube includes a body, a sample storage cavity and an outer cover provided on the body, the outer cover is configured to be circumferentially rotatable around the central axis of the body to facilitate sampling of the sample storage cavity, a notch is provided at one end of the body, an arc-shaped slideway matching with the notch is provided on the outer cover, a second protrusion is provided in both the sampling port and the sample delivery port, and the second protrusion is used to cooperate with the arc-shaped slideway through the notch when the sampling tube enters and exits the sampling port and / or the sample delivery port so that the outer cover rotates and opens and closes the sample storage cavity; and A first retaining spring is provided between the outer cover and the body, and the first retaining spring is configured to provide elastic force to facilitate the outer cover to close the sample storage cavity when the sampling tube is withdrawn from the sampling port and / or the sample delivery port.

[0011] Optionally, the sampling port and the sample delivery port are provided with a sealing plate at one end close to the coal delivery pipeline, the sealing plate located in the sampling port is connected to the sampling port via a second retaining spring, and the sealing plate located in the sample delivery port is connected to the sample delivery port via a second retaining spring, and the second retaining spring is used to provide elastic force to the sealing plate so that the sampling port and the sample delivery port are in a normally closed state.

[0012] Optionally, a first transmission gear is further provided on the main shaft, and the first transmission gear is located outside the shell. An annular transmission belt is provided on the outer peripheral wall of the shell, and at least two telescopic parts are provided on the transmission belt. One of the telescopic parts is configured so that the telescopic end can fix the sampling tube and send the sampling tube into the first opening, and the other telescopic part is configured so that the telescopic end can fix the sampling tube and send the sampling tube into the second opening.

[0013] Optionally, a second transmission gear is also provided on the main shaft, and the second transmission gear is located between the first fixed position and the second fixed position. A slideway and a rack provided on the slideway are provided in the coal conveying pipeline, and the slideway is located between the sampling port and the sample delivery port and a third opening is provided on the slideway. The teeth of the second transmission gear pass through the third opening and engage with the rack. Cleaning blocks are respectively provided at both ends of the rack. The rack is configured so that when the sampling tube enters the coal conveying pipeline from the sampling port or the sample delivery port, the rack moves in the opposite direction to avoid the sampling tube.

[0014] Through the above technical scheme, the sampling system is provided with a sampling and delivering component, a driving component and a sampling tube, the sampling and delivering component includes a sampling mechanism arranged outside the sampling port, the sampling sleeve in the sampling mechanism is used to accommodate the sampling tube, the driving component drives the first connecting piece in the sampling sleeve to allow the sampling tube in the sampling sleeve to enter the coal conveying pipeline through the sampling port for sampling, the sampling and delivering component includes a sampling mechanism arranged outside the sampling port, the sampling sleeve in the sampling mechanism is used to accommodate the sampling tube, the driving component drives the second connecting piece in the sampling sleeve to allow the sampling tube in the sampling sleeve to enter the coal conveying pipeline through the sampling port for sampling, so that when the coal powder after sampling by the sampling tube is detected, the detected coal powder is transported back to the coal conveying pipeline through the sampling mechanism, so as to avoid mixing the detected coal powder with the powder pipe that has not entered the boiler, thereby improving the accuracy of sampling detection.

[0015] Other features and advantages of the present disclosure will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings are used to provide a further understanding of the present disclosure and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present disclosure but do not constitute a limitation of the present disclosure. In the accompanying drawings: Figure 1 is a three-dimensional schematic diagram of a boiler coal powder sampling and delivery system provided in an exemplary embodiment of the present disclosure; Figure 2 is a first angle schematic diagram of a coal transportation pipeline provided in an exemplary embodiment of the present disclosure; Figure 3is an enlarged schematic diagram of a sampling port provided in an exemplary embodiment of the present disclosure; Figure 4 is a partial cross-sectional schematic diagram of a coal transportation pipeline provided in an exemplary embodiment of the present disclosure; Figure 5 is an exploded schematic diagram of a rack provided in an exemplary embodiment of the present disclosure; Figure 6 is a schematic diagram of the assembly of a sampling and delivering assembly and a driving assembly provided in an exemplary embodiment of the present disclosure; Figure 7 is a schematic diagram of a main shaft provided in an exemplary embodiment of the present disclosure; Figure 8 is a partial schematic diagram of a drive assembly provided in an exemplary embodiment of the present disclosure; Fig. 9 is a schematic diagram of the assembly of a sampling mechanism and a sampling tube provided in an exemplary embodiment of the present disclosure; Fig.10 is an exploded schematic diagram of a sampling mechanism provided in an exemplary embodiment of the present disclosure; Fig.11 Schematic diagram of an explosion of a sampling tube provided in an exemplary embodiment of the present disclosure.

[0017] Description of Reference Numerals 1-coal conveying pipeline; 11-sampling port; 12-sample delivery port; 13-second protrusion; 14-blocking plate; 15-slideway; 16-rack; 17-third opening; 18-cleaning block; 2-sampling and sample delivery assembly; 21-sampling mechanism; 211-sampling sleeve; 212-first connecting member; 213-first opening; 214-first accommodating cavity; 215-first connecting part; 216-first matching part; 22-sample delivery mechanism; 221-sample delivery sleeve ;3-driving assembly;31-driver;32-first actuator;33-second actuator;34-housing;341-bracket;35-spindle;36-first transmission gear;37-annular transmission belt;38-telescopic member;39-second transmission gear;4-sampling tube;41-main body;42-sample storage chamber;43-outer cover;44-notch;45-arc slide;46-turntable;47-rotating groove;48-first retaining spring;5-first elastic member. DETAILED DESCRIPTION

[0018] The specific implementation of the present disclosure is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described herein is only used to illustrate and explain the present disclosure, and is not used to limit the present disclosure.

[0019] In the present disclosure, unless otherwise stated, directional words such as "inside" and "outside" refer to the outline of the component itself, wherein: Figure 1The arrow direction in the figure is the coal powder conveying direction. In addition, it should be noted that the terms used, such as "first, second", etc., are used to distinguish one element from another element and do not have order and importance. In addition, in the description with reference to the drawings, the same mark in different drawings represents the same element.

[0020] like Figure 1-Figure 11 As shown, the present disclosure provides a sampling and delivery system for boiler coal powder, which is used for a coal conveying pipeline 1, and the coal conveying pipeline 1 includes a sampling port 11 and a sample delivery port 12 arranged at intervals along the coal conveying direction, and the sampling port 11 is located below the sample delivery port 12. The sampling and delivery system includes: a sampling and delivery component 2, a driving component 3 and a sampling tube 4, wherein the sampling and delivery component 2 includes a sampling mechanism 21 arranged outside the sampling port 11 and a sample delivery mechanism 22 arranged outside the sample delivery port 12, and the sampling mechanism 21 includes a sampling sleeve 211 for accommodating the sampling tube 4 and a sampling sleeve 211 arranged on the sampling sleeve The first connecting piece 212 in the tube 211 is detachably connected to the sampling tube 4 located in the sampling sleeve 211; the sample delivery mechanism 22 includes a sample delivery sleeve 221 for accommodating the sampling tube 4 and a second connecting piece arranged in the sample delivery sleeve 221, the second connecting piece is detachably connected to the sampling tube 4 located in the sample delivery sleeve 221 and is used to drive the sampling tube 4 to deliver samples through the sample delivery port 12; the driving component 3 is configured to be able to drive the first connecting piece 212 and / or the second connecting piece to reciprocate to facilitate sampling or sample delivery of the sampling tube 4.

[0021] According to the above technical solution, a sampling system is provided with a sampling and delivering assembly 2, a driving assembly 3 and a sampling tube 4. The sampling and delivering assembly 2 includes a sampling mechanism 21 arranged outside the sampling port 11. The sampling sleeve 211 in the sampling mechanism 21 is used to accommodate the sampling tube 4. The driving assembly 3 drives the first connecting piece 212 in the sampling sleeve 211 to pass the sampling port 11 into the coal conveying pipeline 1 for sampling. The sampling and delivering assembly 2 includes a sampling mechanism 21 arranged outside the sampling port 11. The sampling sleeve 211 in the sampling mechanism 21 is used to accommodate the sampling tube 4. The driving assembly 3 drives the first connecting piece 212 in the sampling sleeve 211 to pass the sampling port 11 into the coal conveying pipeline 1 for sampling. The outer sample delivery mechanism 22, the sample delivery sleeve 221 in the sample delivery mechanism 22 is used to accommodate the sampling tube 4, and the driving component 3 drives the second connecting piece in the sample delivery sleeve 221 to send the sampling tube 4 located in the sample delivery sleeve 221 into the coal conveying pipeline 1 through the sample delivery port 12 for sampling, so that when the coal powder sampled by the sampling tube 4 is tested, the tested coal powder is transported back to the coal conveying pipeline 1 through the sample delivery mechanism 22, so as to avoid mixing the tested coal powder with the powder pipe that has not entered the boiler, thereby improving the accuracy of sampling and detection.

[0022] In some practicable embodiments, the first end of the sampling sleeve 211 is closed, and the second end is connected to the sampling port 11. The sampling sleeve 211 can be a steel pipe. The sampling sleeve 211 includes a first opening 213 and a first accommodating cavity 214 for accommodating the sampling tube 4. The first opening 213 is arranged on the outer periphery of the sampling sleeve 211. The size of the first opening 213 can be set according to the specific sampling tube 4. The first opening 213 does not exceed the maximum length of the sampling sleeve 211. The first opening 213 is used to facilitate the sampling tube 4 to enter and exit the first accommodating cavity 214. The first connecting member 212 is arranged in the first accommodating cavity 214, and the first connecting member 212 faces the sampling sleeve 2 A first connection point is provided at the first end of 11, a first through hole is provided at the first end of the sampling sleeve 211, and a first output end of the driving component 3 is fixedly connected to the first connection point through the first through hole. In this way, when sampling is required, the sampling tube 4 is firstly passed through the first opening 213 into the first accommodating cavity 214 and is detachably fixedly connected to the first connecting member 212, and the first connecting member 212 and the sampling tube 4 are driven by the driving component 3 to move toward the sampling port 11 and send the sampling tube 4 into the coal conveying pipeline 1 for sampling. After the sampling is completed, the driving component 3 drives the first connecting member 212 and the sampling tube 4 to move in the opposite direction to withdraw the sampling tube 4 from the coal conveying pipeline 1 to complete the sampling. Of course, it can be understood that the first connection end of the sample delivery sleeve 221 is closed, and the second connection end is connected to the sample delivery port 12. The sample delivery sleeve 221 includes a second opening arranged on the outer periphery of the sample delivery sleeve 221 and a second accommodating cavity for accommodating the sampling tube 4. The second connecting piece is arranged in the second accommodating cavity. The second connecting piece is provided with a second connection point toward the first connection end of the sample delivery sleeve 221. The first connection end of the sample delivery sleeve 221 is provided with a second through hole. The second output end of the driving component 3 is fixedly connected to the second connection point through the second through hole. In this way, when it is necessary to deliver the sample, the sampling tube 4 is first introduced into the second accommodating cavity through the second opening and connected with the second connecting piece. The connection is detachably fixed, and the driving component 3 drives the second connecting piece and the sampling tube 4 to move toward the sample delivery port 12 and deliver the sampling tube 4 into the coal conveying pipeline 1 for sample delivery. After the sample delivery is completed, the driving component 3 drives the second connecting piece and the sampling tube 4 to move in the opposite direction to withdraw the sampling tube 4 from the coal conveying pipeline 1 to complete the sample delivery, so that the sampling and delivery of the coal powder in the coal conveying pipeline 1 can be facilitated by the interval setting of the sampling mechanism 21 and the sample delivery mechanism 22, thereby avoiding the failure of timely delivery of the coal powder into the coal conveying pipeline 1 after sampling and detection, avoiding the interference of the detected coal powder with the sampling of the coal powder in the coal conveying pipeline 1, and improving the sampling accuracy.

[0023] In some practicable ways, such as Fig. 9 and Fig.10As shown, a first connecting portion 215 is provided on the outer periphery of the first connecting member 212, and a first matching portion 216 matching with the first connecting portion 215 is provided on the inner side wall of the sampling sleeve 211. One of the first connecting portion 215 and the first matching portion 216 is a first protrusion, and the other is a first slide groove. For example, the first connecting portion 215 can be a first slide groove, and the first slide groove extends along the length direction of the sampling sleeve 211. The number of the first slide grooves can be one or more, and the first matching portion 216 can be a first protrusion. The first protrusion corresponds to the number of the first slide grooves one by one, so that the first connecting member 212 cooperates with the first slide groove in the sampling sleeve 211 through the first protrusion so as to facilitate the first connecting member 212 to move along a preset trajectory. It can be understood that a stop block is also provided at the outer end of the first slide groove to prevent the first connecting member 212 from falling off from the sampling sleeve 211.

[0024] Of course, in some practicable embodiments, a second connecting portion is provided on the outer periphery of the second connecting piece, and a second matching portion that matches with the second connecting portion is provided on the inner side wall of the sample delivering sleeve 221, one of the second connecting portion and the second matching portion is a second protrusion, and the other is a second slide groove. For example, the sample delivering sleeve 221 can have the same structure as the sampling sleeve 211, and the second matching portion in the sample delivering sleeve 221 is a second slide groove, and the second slide groove extends along the length direction of the sample delivering sleeve 221. The number of the second slide grooves can be one or more, and the second matching portion can be a second protrusion, and the second protrusion corresponds to the number of the second slide grooves one by one, so that the second connecting piece cooperates with the second slide groove in the sample delivering sleeve 221 through the second protrusion to facilitate the second connecting piece to move along a preset trajectory. It can be understood that a stop block can also be provided at the outer end of the second slide groove to prevent the second connecting piece from falling off from the sample delivering sleeve 221.

[0025] In some practicable embodiments, the sampling tube 4 is a ferromagnet, and the first connecting member 212 and the second connecting member are both provided with a first magnet block that cooperates with the ferromagnet, so that the sampling tube 4 can be detachably connected to the first connecting member 212 and the second connecting member by magnetic attraction. In addition, in some practicable embodiments, the sampling tube 4 can be a ferromagnet, for example, the sampling tube 4 can be made of carbon steel, and the first connecting member 212 and the second connecting member can be provided with a second magnet block on the side opposite to the sampling tube 4, and the second magnet block is embedded in the first connecting member 212 and the second connecting member, and the first end of the sampling tube 4 is provided with a first magnet block, and the first magnet block is embedded in the sampling tube 4, and the first magnet block and the second magnet block arranged opposite to each other have the same polarity, so that the sampling tube 4 can be detachably connected to the first connecting member 212 or the second connecting member by the suction force of the first magnet block and the second magnet block.

[0026] In order to facilitate driving the sampling tube 4 to take samples or deliver samples, in some practicable ways, such as Figure 1 , Figure 6-Figure 8As shown, the drive assembly 3 includes a driver 31, a first actuator 32 and a second actuator 33. The driver 31 is fixedly arranged on the outer wall of the coal conveying pipeline 1. The first actuator 32 is fixedly connected to the first mounting point through the first through hole. The second actuator 33 is fixedly connected to the second mounting point through the second through hole. The first actuator 32 and the second actuator 33 are both connected to the output end of the driver 31, so that the driver 31 drives the first actuator 32 to drive the first connecting member 212 to reciprocate so that the sampling tube 4 can take samples and / or the driver 31 drives the second actuator 33 to reciprocate so that the sampling tube 4 can deliver samples.

[0027] Specifically, the drive assembly 3 also includes a shell 34 and a main shaft 35. The shell 34 is located between the sampling port 11 and the sample delivery port 12. The driver 31 can be a driving motor, which can be a servo motor that can rotate forward and reverse. The driver 31 is fixed to one side of the shell 34. The two ends of the main shaft 35 are respectively rotatably connected to the shell 34. The first actuator 32 and the second actuator 33 are both connecting ropes. The main shaft 35 is transmission-connected to the output end of the driver 31. The main shaft 35 is provided with a first fixed position connected to the first actuator 32 and a second fixed position connected to the second actuator 33. The first fixed position and the second fixed position can have the same structure. For example, the first fixed position and the second fixed position can both be positioning holes, and the positioning pins are inserted in the positioning holes. The connecting rope is fixed to the positioning pin to achieve a fixed connection with the main shaft 35. The first actuator 32 is partially wrapped around the main shaft 35 and the outer end passes through the shell 34 and is fixedly connected to the first mounting point. The second actuator 33 is partially wrapped around the main shaft 35 and the outer end passes through the shell 34 and is fixedly connected to the second mounting point. The mounting points are fixedly connected, and the winding direction of the first actuator 32 and the main shaft 35 is opposite to the winding direction of the second actuator 33 and the main shaft 35. Therefore, when the motor can be driven to drive the main shaft 35 to rotate, one of the first actuator 32 and the second actuator 33 is in a stretched state and the other is in a relaxed state, so as to avoid the sampling tube 4 located in the sampling sleeve 211 and the sampling tube 4 located in the sample delivery sleeve 221 from synchronously entering the coal transportation pipeline 1 to cause interference. Of course, in order to facilitate sampling or sample delivery of the sampling tube 4, a first elastic member 5 is provided between the first connecting member 212 and the first end of the sampling sleeve 211 and on the outer periphery of the first actuator 32, and a second elastic member is provided between the second connecting member and the first end of the sample delivery sleeve 221 and on the outer periphery of the second actuator 33. Both the first elastic member 5 and the second elastic member can be springs. The first elastic member 5 is used to provide elastic force to facilitate the sampling tube 4 to pass through the sampling port 11 for sampling, and the second elastic member is used to provide elastic force to facilitate the sampling tube 4 to pass through the sample delivery port 12 for sample delivery.

[0028] In addition, in order to facilitate the arrangement of the connecting rope, in some feasible embodiments, a bracket 341 for guiding the arrangement of the connecting rope is provided on the shell 34, and a pulley is provided on the bracket 341. Of course, an extension frame cooperating with the bracket 341 is also provided on the sampling sleeve 211 and the sample delivery sleeve 221, and a pulley is also provided on the extension frame. Therefore, through the arrangement of the bracket 341 and the extension frame, one of the two connecting ropes can be fixedly connected to the first connecting member 212, and the other can be fixedly connected to the second connecting member.

[0029] It can be understood that the above-mentioned drive 31 is a drive motor, and the first actuator 32 and the second actuator 33 are both connecting ropes. The structure is schematic. In other embodiments, the drive can also be two cylinders, and the first actuator 32 and the second actuator 33 are both connecting rods connected to the output end of the cylinder. When sampling, the first actuator 32 is driven by the extension of the cylinder to push the sampling tube 4 in the sampling sleeve 211 to take samples, and when delivering samples, the second actuator 33 is driven by the extension of the cylinder to push the sampling tube 4 in the delivery sleeve 221 to deliver samples. Of course, the method of driving the main shaft 35 to rotate by the drive motor to synchronously drive one of the two connecting ropes to tighten and the other to loosen is also schematic. In other embodiments, the number of drive motors can be two, and the number of main shafts 35 can also be two. One of the two main shafts 35 is fixedly connected to one of the connecting ropes, and the other main shaft 35 is fixedly connected to the other connecting rope, so that the tightness of the connecting rope can be controlled separately by two drive motors.

[0030] In some practicable ways, such as Fig.11As shown, the sampling tube 4 includes a main body 41, a sample storage cavity 42 and an outer cover 43 arranged on the main body 41, and the outer cover 43 is configured to be able to rotate circumferentially around the central axis of the main body 41 to facilitate sampling of the sample storage cavity 42. For example, an annular turntable is provided at one side end of the outer cover 43, and a rotating groove 47 cooperating with the annular turntable 46 is provided on the main body 41 of the sampling tube 4. The central axis of the turntable coincides with the central axis of the main body 41, so that the outer cover 43 can rotate around the central axis of the main body 41 to open or close the sample storage cavity 42. A slot for accommodating the outer cover 43 is also provided in the main body 41, so that the outer cover 43 can be accommodated when the outer cover 43 is rotated to open. Of course, the rotation angle of the outer cover 43 can also be limited by the depth of the slot. Furthermore, a notch 44 is provided at one end of the body 41 and an arcuate slide 45 cooperating with the notch 44 is provided on the outer cover 43. The arcuate slide 45 spirally extends from the notch 44 toward one side of the turntable 46. A second protrusion 13 is provided in the sampling port 11 and the sample delivery port 12. The second protrusion 13 is used to cooperate with the arcuate slide 45 through the notch 44 when the sampling tube 4 enters and exits the sampling port 11 and / or the sample delivery port 12 so that the outer cover 43 can rotate and open and close the sample storage chamber 42; in order to facilitate the outer cover 43 to be in a normally closed state, in some feasible methods, a first retaining spring 48 is provided between the outer cover 43 and the body 41, and the first retaining spring 48 is configured to provide elastic force when the sampling tube 4 withdraws from the sampling port 11 and / or the sample delivery port 12 so that the outer cover 43 can close the sample storage chamber 42.

[0031] In addition, in some possible implementations, such as Figure 1 , Figure 2 and Figure 3 As shown, a sealing plate 14 is provided at one end of the sampling port 11 and the sample delivery port 12 near the coal conveying pipeline 1. The sealing plate 14 located in the sampling port 11 is connected to the sampling port 11 through a second retaining spring, and the sealing plate 14 located in the sample delivery port 12 is connected to the sample delivery port 12 through a second retaining spring. The second retaining spring is used to provide elastic force to the sealing plate 14 so that the sampling port 11 and the sample delivery port 12 are in a normally closed state. The sealing plate 14 can be fan-shaped and there can be multiple sealing plates 14. Multiple fan-shaped sealing plates 14 can be combined to form a circle to seal the sampling port 11 or the sample delivery port 12. Of course, in order to improve the sealing performance, a sealing gasket can be provided on the outer periphery of the sealing plate 14 to prevent coal powder from leaking from the coal conveying pipeline 1.

[0032] In some practicable embodiments, the main shaft 35 is further provided with a first transmission gear 36, the first transmission gear 36 is located outside the shell 34, an annular transmission belt 37 is provided on the outer peripheral wall of the shell 34, and the annular transmission belt 37 is located in a plane perpendicular to the sampling tube 4. The driving motor drives the main shaft 35 to rotate, which can synchronously drive the annular transmission belt 37 to rotate, and the annular transmission belt 37 is provided with at least two telescopic members 38, one of which is configured so that the telescopic end can fix the sampling tube 4 and send the sampling tube 4 into the first opening 213. The telescopic member 38 may be an electric cylinder or a pneumatic cylinder. For example, in the present embodiment, the telescopic member 38 may be an electric cylinder, and the telescopic end of the electric cylinder is an electromagnet. The sampling tube 4 is fixed to the telescopic rod by energizing the electromagnet, and the telescopic rod is extended by the electric cylinder to send the sampling tube 4 into the first opening 213. Of course, when there are multiple telescopic members 38 and multiple samplings are required, multiple sampling tubes 4 may be set on a preset telescopic member 38 first, so that the sampling tubes 4 can be sampled in turn in an orderly manner to avoid sampling confusion. Of course, in order to facilitate the sampling of the sampling tube 4, at least one telescopic member 38 is configured so that the telescopic end can fix the sampling tube 4 and send the sampling tube 4 into the second opening, so that the position of the telescopic member 38 can be changed by the rotation of the annular transmission belt 37, so that the sampling tube 4 is temporarily stored at the telescopic end of the telescopic member 38.

[0033] In order to facilitate the cleaning of the coal ash at the sampling port 11 and the sample delivery port 12, in some practicable ways, such as Figure 4 , Figure 5 and Figure 6 As shown, the main shaft 35 is also provided with a second transmission gear 39, and the second transmission gear 39 is located between the first fixed position and the second fixed position. A slideway 15 and a rack 16 arranged on the slideway are provided in the coal conveying pipeline 1. The slideway 15 is located between the sampling port 11 and the sample delivery port 12, and a third opening 17 is provided on the slideway 15. The gear teeth of the second transmission gear 39 pass through the third opening 17 and mesh with the rack 16. Cleaning blocks 18 are respectively provided at both ends of the rack 16. The rack 16 is configured so that when the sampling tube 4 enters the coal conveying pipeline 1 from the sampling port 11 or the sample delivery port 12, , the rack 16 moves in the opposite direction to avoid the sampling tube 4, so that the sampling port 11 and the sample delivery port 12 can be cleaned in turn by the cleaning blocks 18 at both ends of the rack 16. Of course, a connecting channel can be provided in the middle of the rack 16, and a spring is provided in the connecting channel. The two ends of the spring are respectively fixedly connected to the cleaning blocks 18, so that when the rack 16 moves, it can drive one of the cleaning blocks 18 to clean the sampling port 11 or the sample delivery port 12, and the cleaning block 18 at the other end can clean the slide 15, thereby ensuring that the slide 15 is free from dust accumulation and blockage.

[0034] The preferred embodiments of the present disclosure are described in detail above in conjunction with the accompanying drawings; however, the present disclosure is not limited to the specific details in the above embodiments. Within the technical concept of the present disclosure, a variety of simple modifications can be made to the technical solution of the present disclosure, and these simple modifications all fall within the protection scope of the present disclosure.

[0035] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present disclosure will not further describe various possible combinations.

[0036] In addition, various embodiments of the present disclosure may be arbitrarily combined, and as long as they do not violate the concept of the present disclosure, they should also be regarded as the contents disclosed by the present disclosure.

Claims

1. A sampling and delivery system for boiler coal powder, used for a coal conveying pipeline, wherein the coal conveying pipeline comprises a sampling port and a sample delivery port arranged at intervals along the coal conveying direction, wherein the sampling port is located below the sample delivery port, and is characterized in that: include: A sampling and delivering assembly, a driving assembly and a sampling tube, wherein the sampling and delivering assembly comprises a sampling mechanism disposed outside the sampling port and a sample delivering mechanism disposed outside the sample delivering port, the sampling mechanism comprises a sampling sleeve for accommodating the sampling tube and a first connecting member disposed in the sampling sleeve, the first connecting member being detachably connected to the sampling tube located in the sampling sleeve; the sample delivering mechanism comprises a sample delivering sleeve for accommodating the sampling tube and a second connecting member disposed in the sample delivering sleeve, the second connecting member being detachably connected to the sampling tube located in the sample delivering sleeve and being used to drive the sampling tube to deliver samples through the sample delivering port; the driving assembly is configured to be able to drive the first connecting member and / or the second connecting member to reciprocate to facilitate sampling or sample delivery of the sampling tube.

2. The sampling system for boiler coal powder according to claim 1 is characterized in that: The first end of the sampling sleeve is closed, and the second end is connected to the sampling port. The sampling sleeve includes a first opening arranged on the outer periphery of the sampling sleeve and a first accommodating cavity for accommodating the sampling tube. The first connecting member is arranged in the first accommodating cavity. The first connecting member is provided with a first connecting point toward the first end of the sampling sleeve. The first end of the sampling sleeve is provided with a first through hole. The first output end of the driving component passes through the first through hole and is fixedly connected to the first connecting point. The first connecting end of the sample delivery sleeve is closed, and the second connecting end is connected to the sample delivery port. The sample delivery sleeve includes a second opening arranged on the outer periphery of the sample delivery sleeve and a second accommodating cavity for accommodating the sampling tube. The second connecting piece is arranged in the second accommodating cavity. The second connecting piece is provided with a second connecting point facing the first connecting end of the sample delivery sleeve. The first connecting end of the sample delivery sleeve is provided with a second through hole, and the second output end of the driving component is fixedly connected to the second connecting point through the second through hole.

3. The sampling and delivery system for boiler coal powder according to claim 1 is characterized in that: A first connecting portion is provided on the outer periphery of the first connecting member, a first matching portion matching with the first connecting portion is provided on the inner side wall of the sampling sleeve, one of the first connecting portion and the first matching portion is a first protrusion, and the other is a first sliding groove; A second connecting portion is provided on the outer periphery of the second connecting piece, and a second matching portion matching with the second connecting portion is provided on the inner side wall of the sample delivery sleeve. One of the second connecting portion and the second matching portion is a second protrusion, and the other is a second slide groove.

4. The sampling system for boiler coal powder according to claim 3 is characterized in that: The sampling tube is a ferromagnet, and the first connecting member and the second connecting member are both provided with a first magnet block that cooperates with the ferromagnet, so that the sampling tube can be detachably connected to the first connecting member and the second connecting member by magnetic attraction.

5. The sampling and delivery system for boiler coal powder according to claim 2, characterized in that: The driving assembly includes a driver, a first actuator and a second actuator. The driver is fixedly arranged on the outer wall of the coal conveying pipeline. The first actuator passes through the first through hole and is fixedly connected to the first mounting point. The second actuator passes through the second through hole and is fixedly connected to the second mounting point. The first actuator and the second actuator are both connected to the output end of the driver, so that the driver drives the first actuator to drive the first connecting member to reciprocate so that the sampling tube can take samples and / or the driver drives the second actuator to reciprocate so that the sampling tube can deliver samples.

6. The sampling and delivery system for boiler coal powder according to claim 5, characterized in that: The drive assembly also includes a shell and a main shaft, the shell is located between the sampling port and the sample delivery port, the driver is fixedly arranged on one side of the shell, the two ends of the main shaft are respectively rotatably connected to the shell, the first actuator and the second actuator are both connecting ropes, the main shaft is transmission-connected to the output end of the driver, the main shaft is provided with a first fixing position connected to the first actuator and a second fixing position connected to the second actuator, the first actuator is partially wound around the main shaft and the outer end passes through the shell and is fixedly connected to the first mounting point, the second actuator is partially wound around the main shaft The first actuator is on the shaft and the outer end passes through the shell and is fixedly connected to the second mounting point. The winding direction of the first actuator and the main shaft is opposite to the winding direction of the second actuator and the main shaft. A first elastic member is sleeved on the outer periphery of the first actuator between the first connecting member and the first end of the sampling sleeve, and a second elastic member is sleeved on the outer periphery of the second actuator between the second connecting member and the first end of the sample delivery sleeve. The first elastic member is used to provide elastic force to facilitate the sampling tube to pass through the sampling port for sampling, and the second elastic member is used to provide elastic force to facilitate the sampling tube to pass through the sample delivery port for sample delivery.

7. The sampling and delivery system for boiler coal powder according to claim 1, characterized in that: The sampling tube comprises a body, a sample storage cavity and an outer cover arranged on the body, the outer cover is configured to be able to rotate circumferentially around the central axis of the body to facilitate sampling of the sample storage cavity, a notch is arranged at one end of the body, an arc-shaped slideway matched with the notch is arranged on the outer cover, a second protrusion is arranged in the sampling port and the sample delivery port, and the second protrusion is used to cooperate with the arc-shaped slideway through the notch when the sampling tube enters and exits the sampling port and / or the sample delivery port, so that the outer cover rotates and opens and closes the sample storage cavity; and A first retaining spring is provided between the outer cover and the body, and the first retaining spring is configured to provide elastic force to facilitate the outer cover to close the sample storage cavity when the sampling tube is withdrawn from the sampling port and / or the sample delivery port.

8. The sampling and delivery system for boiler coal powder according to claim 7, characterized in that: The sampling port and the sample delivery port are provided with a sealing plate at one end close to the coal delivery pipeline. The sealing plate located in the sampling port is connected to the sampling port via a second retaining spring, and the sealing plate located in the sample delivery port is connected to the sample delivery port via a second retaining spring. The second retaining spring is used to provide elastic force to the sealing plate so that the sampling port and the sample delivery port are in a normally closed state.

9. The sampling system for boiler coal powder according to claim 6, characterized in that: A first transmission gear is also provided on the main shaft, and the first transmission gear is located outside the shell. An annular transmission belt is provided on the outer peripheral wall of the shell, and at least two telescopic parts are provided on the annular transmission belt. One of the telescopic parts is configured so that the telescopic end can fix the sampling tube and send the sampling tube into the first opening, and the other telescopic part is configured so that the telescopic end can fix the sampling tube and send the sampling tube into the second opening.

10. The sampling and delivery system for boiler coal powder according to claim 6, characterized in that: A second transmission gear is also provided on the main shaft, and the second transmission gear is located between the first fixed position and the second fixed position. A slideway and a rack provided on the slideway are provided in the coal conveying pipeline, and the slideway is located between the sampling port and the sample delivery port and a third opening is provided on the slideway. The gear teeth of the second transmission gear pass through the third opening and mesh with the rack. Cleaning blocks are respectively provided at both ends of the rack. The rack is configured so that when the sampling tube enters the coal conveying pipeline from the sampling port or the sample delivery port, the rack moves in the opposite direction to avoid the sampling tube.

Images