CN105865828B - Full-section sampling device - Google Patents
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- CN105865828B CN105865828B CN201610375961.XA CN201610375961A CN105865828B CN 105865828 B CN105865828 B CN 105865828B CN 201610375961 A CN201610375961 A CN 201610375961A CN 105865828 B CN105865828 B CN 105865828B
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- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
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Abstract
The invention discloses a full-section sampling device which comprises a sampling head capable of rotating, wherein the sampling head is arranged above a material conveying belt through a bearing seat, the sampling head rotates on the plane of the cross section of the conveying belt and is used for scraping materials on the conveying belt, a scraping and sweeping mechanism capable of reciprocating along the height direction of the sampling head is arranged at the sampling end of the sampling head, and the scraping and sweeping mechanism extends to the conveying surface of the conveying belt during rotating sampling and is used for extruding and scraping along the conveying surface of the conveying belt so as to complete full-section sampling operation. The invention has the advantages of simple and compact structure, good sampling effect, effective guarantee of sampling precision requirement, improvement of production efficiency and reduction of use and maintenance cost.
Description
Technical Field
The invention mainly relates to the field of material sample collecting and preparing equipment, in particular to a full-section sampling device.
Background
For sampling, preparing and testing of material (such as coal) samples, each country has a mandatory standard, and sampling and preparing of the samples must be carried out according to the standard. The sampling, sample preparation and testing process of the sample has the principle that the granularity and the mass of the collected sample are gradually reduced on the premise of not destroying the representativeness of the sample until the granularity and the mass (weight) precision requirements of the sample in laboratory testing are met, and then the sample meeting the requirements is subjected to relevant testing analysis.
Taking the sampling and preparation of coal as an example, the sampling and preparation process is actually a sampling and analyzing process, and the purpose of sampling and preparation of coal is to obtain an experimental coal sample of which the experimental result can represent the whole batch of sampled coal. Whether "sampling", "sample preparation" or "assay", there is no loss of sample during this process, and no physical or chemical changes to the sample that would affect the final test results.
In sampling, sample preparation and chemical examination of material (such as coal) samples, a full-section sampling device is used, wherein a sampling head of the full-section sampling device is arranged above a V-shaped conveying belt, and the material on the conveying belt is transversely sampled by rotating the sampling head. However, the existing full-section sampling device has the following technical problems in practical application:
(1) full-section sampling cannot be really achieved. Because the position between the sampling head and the conveying belt is relatively fixed, when the conveying belt is static, the sampling head can just scrape the conveying surface of the conveying belt; but when the transmission band when operation, receive on the transmission face factor influences such as material weight nonconformity and the vibration of conveyer, make the transmission band often have the deformation, perhaps make the transmission band have the condition of irregular beating, this all leads to the sampling head can not be complete scrape sweep on the transmission face of transmission band, lead to the rotatory trace of scraping of fixed sampling head promptly and sweep the coincidence of the transmission face of track unable and transmission band, make can not really accomplish full section sampling, the required precision of sampling has been influenced, and then follow-up production operation activity has been seriously influenced.
(2) As shown in fig. 1, in order to prevent the sampling head rotating at a high speed from touching the edge of the transmission belt when entering the transmission belt, so as to prevent the transmission belt from being damaged or the material on the transmission belt from being knocked over, the circular arc of the rotation track of the existing sampling head does not completely fit the transmission surface of the transmission belt, i.e., a scraping dead angle at a position a in fig. 1 exists between the existing sampling head and the transmission belt. Scraping dead angles can also cause the sampling head not to scrape materials in the area, and sampling precision is also seriously influenced.
(3) The scraping and sweeping plate at the end part of the existing sampling head works for a period of time, due to certain friction with a transmission belt, the abrasion of the scraping and sweeping plate is serious, if the scraping and sweeping plate is not timely replaced, the scraping and sweeping sampling effect can be influenced, if the scraping and sweeping plate is frequently replaced, the sampling continuity and the production efficiency are influenced, and the use cost and the manual maintenance cost are improved.
Disclosure of Invention
The technical problem solved by the invention is that: aiming at the problems in the prior art, the full-section sampling device has the advantages of simple and compact structure, good sampling effect, capability of effectively ensuring the sampling precision requirement, improvement on the production efficiency and reduction in the use and maintenance cost.
In order to solve the technical problems, the invention adopts the following technical scheme:
the utility model provides a full section sampling device, includes rotary motion's sampling head, the sampling head passes through the bearing frame and installs in the top of material transmission band, the sampling head is used for scraping the material of getting on the transmission band as rotary motion on the plane of transmission band cross section, the sampling end of sampling head is equipped with and scrapes the mechanism of sweeping that does reciprocating motion along the sampling head direction of height, during rotary sampling scrape sweep the mechanism stretch to the transmission face extrusion of transmission band is used for scraping along the transmission face of transmission band and sweeps in order to accomplish full section sampling operation.
As a further improvement of the invention, the scraping and sweeping mechanism comprises a scraping and sweeping plate assembly arranged at the end part of the sampling head and a movable pull rod assembly used for fixing the scraping and sweeping plate assembly, the movable pull rod assembly comprises more than two sets of matched limit pull rod seats and movable pull rods, the more than two limit pull rod seats are respectively arranged at two sides of the sampling head, each limit pull rod seat is provided with a movable pull rod capable of reciprocating along the height direction of the sampling head in a penetrating manner, and one end of each movable pull rod is fixedly connected with the scraping and sweeping plate assembly.
As a further improvement of the invention, the movable pull rods positioned between the limiting pull rod seat and the scraping and sweeping plate assembly are sleeved with elastic members for downwards extruding the scraping and sweeping plate assembly so that the scraping and sweeping plate assembly extrudes the conveying surface of the scraping and sweeping conveying belt.
As a further improvement of the invention, the scraping and sweeping plate component comprises an elastic scraping plate used for contacting with the conveying belt and a hard scraping plate used for being connected with the movable pull rod, the hard scraping plate is arranged on the sampling port of the sampling head, and the elastic scraping plate is arranged on the hard scraping plate.
As a further improvement of the invention, during sampling, the end part of the scraping and sweeping plate component, which is close to the conveying belt, is firstly provided with an arc-shaped chamfer, so that the scraping and sweeping plate component can be quickly guided onto the conveying surface of the conveying belt.
As a further improvement of the invention, the scraping and sweeping mechanism further comprises a guide part matched with the scraping and sweeping plate assembly and the movable pull rod assembly, and the scraping and sweeping plate assembly moves under the guide action of the guide part during sampling so that the scraping and sweeping plate assembly is quickly guided to the conveying surface of the conveying belt to complete extrusion scraping and sweeping.
As a further improvement of the present invention, the guide member includes two concave guide cam grooves respectively formed on two inner side surfaces of the bearing block, the other end of each movable pull rod is provided with a first movable guide wheel matched with the guide cam groove, the first movable guide wheel extends into the guide cam groove and rolls along the cam groove surface to make the movable pull rod reciprocate along the height direction of the sampling head, so as to pull the sweeping plate assembly to be quickly guided onto the transmission surface of the transmission belt, or make the sweeping plate assembly extend to the transmission surface of the transmission belt to complete the extrusion sweeping.
As a further improvement of the invention, the guide component comprises a guide extrusion plate for extruding the scraping and sweeping plate component, the guide extrusion plate is arranged at one side edge of the conveying belt, and when the rotary sampling is carried out, the scraping and sweeping plate component contacts the guide extrusion plate firstly and is rapidly guided onto the conveying surface of the conveying belt after being extruded by the guide extrusion plate.
As a further improvement of the invention, the guide extrusion plate is arc-shaped, one end of the guide extrusion plate is arranged on the transmission surface of the transmission belt, and the other end of the guide extrusion plate extending out of the transmission belt is in a curled edge shape bending outwards.
As a further improvement of the present invention, the guide member includes two guide sliding plates respectively disposed near the bearing seat, the guide sliding plates have a slope guide surface, a second movable guide wheel matched with the guide sliding plate is disposed at the other end of each movable pull rod, and the second movable guide wheel rolls on the slope guide surface of the guide sliding plate for enabling the movable pull rod to reciprocate along the height direction of the sampling head, so as to pull the sweeping plate assembly to be rapidly guided onto the conveying surface of the conveying belt, or enable the sweeping plate assembly to extend to the conveying surface of the conveying belt to complete extrusion sweeping.
Compared with the prior art, the invention has the advantages that:
(1) according to the full-section sampling device, the scraping and sweeping mechanism which does reciprocating motion is arranged at the sampling end of the sampling head, so that the position between the sampling head and the conveying belt is not relatively fixed any more, and the sampling head can be adaptive to the deformation of the conveying belt. No matter the transmission band sinks or beats, scrape sweep the mechanism and can both stretch to the transmission face of transmission band and hug closely the transmission face, scrape along the transmission face extrusion of transmission band and sweep for the sampling head sampling effect is good, has really realized full section sampling, has effectively guaranteed the sampling required precision.
(2) The full-section sampling device is provided with the scraping and sweeping mechanism which does reciprocating motion, so that no sampling dead angle exists between the sampling head and the conveying belt, and full-section sampling is further ensured.
(3) According to the full-section sampling device, the scraping and sweeping mechanism has a certain movement stroke, the sampling head and the conveying belt are not in interference fit with fixed structures, and the sampling head and the conveying belt are not in hard contact; the sampling head can reach through scraping and sweep the mechanism extrusion transmission band and realize full section sampling promptly, scrape sweep the mechanism and can be appropriate backward movement again to avoid causing hard extruded damage to the transmission band, effectively reduced and used the maintenance cost.
(4) According to the full-section sampling device, the scraping and sweeping mechanism has a certain movement stroke, so that even if the end part of the scraping and sweeping mechanism is abraded to a certain extent, the scraping and sweeping mechanism does not need to be replaced immediately, the scraping and sweeping mechanism can still continue to extrude downwards, the scraping and sweeping effect of the scraping and sweeping mechanism is not affected, the service time of the scraping and sweeping mechanism is effectively prolonged, the production efficiency is guaranteed, and the time cost, the labor cost and the material cost for replacing and maintaining the scraping and sweeping mechanism are reduced.
(5) The full-section sampling device is provided with the movable pull rod and the limiting pull rod seat which are matched, so that firstly, the sweeping plate component can have a stroke of reciprocating motion along the height direction of the sampling head, and full-section sampling is really realized. Secondly, effectively guaranteed to scrape and swept the reliable connection between board subassembly and the sampling head for scrape and sweep the board subassembly and can not take place the displacement of other directions, effectively guaranteed to scrape the operation of sweeping the board subassembly, then effectively guaranteed the accurate sampling of sampling head.
(6) According to the full-section sampling device, the elastic piece is arranged, so that the scraping and sweeping plate assembly can further ensure effective extrusion force through the elastic piece to realize full-section sampling except for the centrifugal force generated when the scraping and sweeping plate assembly is rotated at a high speed. Simultaneously, also can further guarantee to scrape the restoring force of sweeping the board subassembly, the board subassembly of scraping that just extrudeed to sweep can reset rapidly under the effect of elastic component to be convenient for contact the operation of scraping after the transmission band once more extrudees.
(7) According to the full-section sampling device, the hard scraper plate of the scraping and sweeping plate component can ensure that the whole scraping and sweeping plate component has certain rigidity, and the elastic scraper plate can be in interference contact with the conveying belt, so that the scraping and sweeping effect is further ensured; secondly, the scraping and sweeping friction force on the conveying belt can be reduced, and the damage influence on the conveying belt is reduced. Simultaneously, scrape and sweep the board subassembly through setting up arc chamfer for the board subassembly is swept in high-speed rotatory scraping when getting into the transmission band region, can directly not hit the border of hitting the transmission band, can not damage the transmission band or beat the material on the transmission band.
(8) According to the full-section sampling device, the guide part is arranged, so that the scraping and sweeping plate component rotating at a high speed can be guided, the scraping and sweeping plate component rotating at a high speed and having a certain movement stroke can not directly hit the edge of the conveying belt when entering the conveying belt area, and the conveying belt can not be damaged or materials on the conveying belt can not be knocked over. Secondly, can sweep the accurate direction of the subassembly to the transmission face of transmission band with the scraping of high-speed rotation, be convenient for quick, accurate, smooth and easy implementation full section sampling operation.
Drawings
Fig. 1 is a schematic diagram of a structural principle of a sampling device in the prior art.
Fig. 2 is a schematic diagram of a three-dimensional structure of a full-section sampling device according to the present invention in embodiment 1.
Fig. 3 is a schematic partial perspective view of the wiping mechanism of the present invention in embodiment 1.
Fig. 4 is a schematic partial perspective view of a guide member according to the present invention in embodiment 1.
Fig. 5 is a schematic diagram of a three-dimensional structure of a full-section sampling device of the present invention in embodiment 2.
Fig. 6 is a schematic partial perspective view of a sweeping mechanism according to the present invention in embodiment 2.
Fig. 7 is a schematic partial perspective view of a guide member according to the present invention in embodiment 2.
Fig. 8 is a schematic diagram of a three-dimensional structure of a full-face sampling device according to the present invention in embodiment 3.
Fig. 9 is a schematic partial perspective view of a sweeping mechanism according to the present invention in embodiment 3.
Fig. 10 is a schematic partial perspective view of a guide member according to the present invention in embodiment 3.
Illustration of the drawings:
1. a sampling head; 2. a bearing seat; 3. a conveyor belt; 4. a sweeping mechanism; 41. a sweeping plate assembly; 411. an elastic scraper; 412. a hard scraper; 42. a movable drawbar assembly; 421. a limiting pull rod seat; 422. a movable pull rod; 4221. a first movable guide wheel; 4222. a second movable guide wheel; 423. an elastic member; 43. a guide member; 431. a guide cam groove; 432. guiding the extrusion plate; 433. and (4) guiding the sliding plate.
Detailed Description
The present invention will be described in further detail with reference to the following specific embodiments and the accompanying drawings.
As shown in fig. 2 to 10, the invention provides a full-section sampling device, which comprises a sampling head 1 capable of rotating, wherein the sampling head 1 is mounted above a material conveying belt 3 through a bearing seat 2, the sampling head 1 rotates on the plane of the cross section of the conveying belt 3 to scrape the material on the conveying belt 3, a scraping and sweeping mechanism 4 capable of reciprocating along the height direction of the sampling head 1 is arranged at the sampling end of the sampling head 1, and the scraping and sweeping mechanism 4 extends to the conveying surface of the conveying belt 3 during rotary sampling to extrude and scrape the conveying surface of the conveying belt 3 to complete full-section sampling operation. According to the full-section sampling device, the scraping and sweeping mechanism 4 which does reciprocating motion is arranged at the sampling end of the sampling head 1, so that firstly, the position between the sampling head 1 and the conveying belt 3 is not relatively fixed any more, and the sampling head 1 can be adaptive to the deformation of the conveying belt 3. Namely: scrape sweep mechanism 4 and can adjust self position according to the real-time condition of transmission band 3 in a flexible way, no matter transmission band 3 sinks or beats, scrape sweep mechanism 4 and can both stretch to the transmission face of transmission band 3 and hug closely the transmission face, scrape along the transmission face extrusion of transmission band 3 and sweep for sampling head 1 sampling is effectual, has really realized full section sampling, has effectively guaranteed the sampling required precision. Secondly, such setting makes also can not have the sampling dead angle between sampling head 1 and the transmission band 3, further guarantees the full section and samples. Thirdly, the scraping and sweeping mechanism 4 can flexibly reciprocate, so that the sampling head 1 and the conveying belt 3 are not in interference fit with fixed structures, and the sampling head 1 and the conveying belt 3 are not in hard contact; sampling head 1 can enough realize full section sampling through scraping 4 extrusion transmission bands 3 of sweeping the mechanism promptly, scrapes and sweeps mechanism 4 and can be suitable backward movement again to avoid causing hard extruded damage to transmission band 3, effectively reduced and used the maintenance cost. Fourthly because the scraping and sweeping mechanism 4 has certain movement stroke, even if the end part of the scraping and sweeping mechanism 4 is abraded to a certain extent, the scraping and sweeping mechanism 4 does not need to be replaced immediately, the scraping and sweeping mechanism 4 can still continue to extrude downwards, the scraping and sweeping effect of the scraping and sweeping mechanism 4 can not be affected, the service time of the scraping and sweeping mechanism 4 is effectively prolonged, the production efficiency is ensured, and the time cost, the labor cost and the material cost for replacing and maintaining the scraping and sweeping mechanism 4 are reduced.
As shown in fig. 2, further, in the preferred embodiment, the sweeping mechanism 4 includes a sweeping plate assembly 41 disposed at an end of the sampling head 1 and a movable rod assembly 42 for fixing the sweeping plate assembly 41, the movable rod assembly 42 includes two or more sets of limiting rod seats 421 and movable rods 422 matching with each other, the two or more limiting rod seats 421 are respectively disposed at two sides of the sampling head 1, each limiting rod seat 421 is penetrated with a movable rod 422 capable of reciprocating along a height direction of the sampling head 1, one end of each movable rod 422 is fixedly connected with the sweeping plate assembly 41, and the other end of each movable rod 422 is provided with a limiting portion so that the movable rod 422 does not separate from the limiting rod seat 421 when the sampling head 1 rotates at a high speed. Due to the arrangement of the movable pull rod 422 and the limit pull rod seat 421, firstly, the sweeping plate assembly 41 can be affected by the limit of the movable pull rod assembly 42, and the sweeping plate assembly 41 can have a stroke reciprocating along the height direction of the sampling head 1 by the centrifugal force generated during high-speed rotation (or the pressing force of the elastic member 423 as described below) and the mutual pressing force between the conveying belt 3. This movement stroke has effectively guaranteed to sweep board subassembly 41 and can stretch to the transmission face of transmission band 3 and along the extrusion scraping of the transmission face of transmission band 3, really realizes full section sampling, can avoid causing hard extruded damage to transmission band 3 simultaneously again, has reduced the maintenance cost. Secondly, effectively guaranteed the reliable connection between scraping and sweeping board subassembly 41 and the sampling head 1 for scraping and sweeping board subassembly 41 has not taken place the displacement of other directions except along the 1 direction of height reciprocating motion of sampling head when rotatory sampling, has effectively guaranteed the operation of scraping and sweeping board subassembly 41, has then effectively guaranteed the accurate sampling of sampling head 1.
As shown in fig. 2, in a preferred embodiment, the movable rod 422 between the limiting rod seat 421 and the sweeping plate assembly 41 is sleeved with an elastic member 423 for pressing the sweeping plate assembly 41 downward so that the sweeping plate assembly 41 presses the conveying surface of the sweeping conveyor belt 3. Through setting up elastic component 423 for scrape sweep board subassembly 41 except through receiving the centrifugal force that produces when high-speed rotatory, can also further guarantee effectual extrusion force through elastic component 423, make it when the sampling operation, can the deformation of self-adaptation transmission band 3, realize full section sampling through extrusion transmission band 3. Simultaneously, through setting up elastic component 423, also can further guarantee the restoring force of sweeping board subassembly 41, promptly after sampling head 1 high-speed rotation passes through transmission band 3, the sweeping board subassembly 41 that just extrudees and sweep can reset rapidly under the effect of elastic component 423, is convenient for carry out the extrusion again after contacting transmission band 3 and sweeps the operation, circulates according to this. In this embodiment, the elastic member 423 is a compression spring sleeved on the movable rod 422.
Further, as shown in fig. 2 and 3, in the preferred embodiment, the squeegee assembly 41 includes an elastic squeegee 411 for contacting the transfer belt 3 and a hard squeegee 412 for connecting with the movable pull rod 422, the hard squeegee 412 is disposed on the sampling port of the sampling head 1, and the elastic squeegee 411 is disposed on the hard squeegee 412. The rigid scraper 412 can ensure that the whole scraper assembly 41 has certain rigidity, and the elastic scraper 411 can realize interference contact with the conveying belt 3, so as to further ensure the scraping effect; secondly, the scraping and sweeping friction force on the conveying belt 3 can be reduced, and the damage influence on the conveying belt 3 is reduced.
As shown in fig. 2 and 3, further, in the preferred embodiment, the end of the sweeping plate assembly 41, which is first close to the conveyor belt 3 during sampling, is provided with an arc-shaped chamfer so that the sweeping plate assembly 41 can be quickly guided onto the conveying surface of the conveyor belt 3. Through setting up arc chamfer for high-speed rotatory sweep board subassembly 41 can not directly hit the border of hitting transmission band 3 when getting into transmission band 3 region, can not damage transmission band 3 or overturn the material on the transmission band 3.
Further, in the preferred embodiment, the sweeping mechanism 4 further includes a guiding member 43 cooperating with the sweeping plate assembly 41 and the movable pulling rod assembly 42, and the sweeping plate assembly 41 moves under the guiding action of the guiding member 43 during sampling so that the sweeping plate assembly 41 is rapidly guided onto the conveying surface of the conveying belt 3 to complete the squeezing sweeping. Through setting up guide part 43, firstly can lead to the sweeping board subassembly 41 of high-speed rotation, further ensure that the sweeping board subassembly 41 of high-speed rotation, certain motion stroke can not directly hit the border of hitting the transmission band 3 when getting into the transmission band 3 region, can not damage the transmission band 3 or overturn the material on the transmission band 3. Secondly, can be with the high-speed rotatory accurate direction of sweeping board subassembly 41 to the transmission face of transmission band 3 on, be convenient for quick, accurate, smooth and easy implementation full section sampling operation. The invention further provides a plurality of preferable specific application examples as follows:
specific application example 1: as shown in fig. 2 to 4, the guide member 43 includes two guide cam grooves 431 respectively formed on two inner side surfaces of the bearing block 2 and having a concave shape, the other end of each movable pull rod 422 is provided with a first movable guide wheel 4221 matched with the guide cam grooves 431, and the first movable guide wheel 4221 extends into the guide cam grooves 431 and rolls along the cam groove surface to enable the movable pull rod 422 to reciprocate along the height direction of the sampling head 1, so as to pull the sweeping plate assembly 41 to be rapidly guided onto the conveying surface of the conveying belt 3, or enable the sweeping plate assembly 41 to extend to the conveying surface of the conveying belt 3 to complete squeezing and sweeping. As is known, the cam structure can be changed according to the structure thereof, so that the transmission part matched with the cam structure has a certain and special motion track. In this embodiment, the guiding cam groove 431 is of an upright elliptical structure, and when the sweeping plate assembly 41 is about to contact the conveying belt 3, under the influence of the special structure of the guiding cam groove 431, the first movable guide roller 4221 rolling along the cam groove surface can enable the movable pull rod 422 to pull the sweeping plate assembly 41, so that the sweeping plate assembly can be guided onto the conveying surface of the conveying belt 3 quickly and accurately without hitting the edge of the conveying belt 3. When the sweep plate assembly 41 has been guided into contact with the conveying belt 3, the first movable idler 4221 rolling along the cam groove surface causes the movable link 422 to no longer pull and restrain the sweep plate assembly 41, subject to the special structure of the guide cam groove 431. At the same time, the squeegee assembly 41, which is no longer restrained by the tension, will extend toward the conveying surface of the conveyor belt 3 and perform the squeegeeing operation under the influence of the elastic members 423 and the centrifugal force of the high-speed rotation.
Specific application example 2: as shown in fig. 5 to 7, the guide member 43 includes a guide pressing plate 432 for pressing the sweep plate assembly 41, the guide pressing plate 432 is provided at one side edge of the conveying belt 3, and when sampling is rotated, the sweep plate assembly 41 is brought into contact with the guide pressing plate 432 first and is rapidly guided onto the conveying surface of the conveying belt 3 by pressing of the guide pressing plate 432. By providing the guide pressing plate 432, the sweeping plate assembly 41 rotating at a high speed will not contact with the edge of the conveying belt 3, but is directly pressed by the guide pressing plate 432 and then rapidly guided onto the conveying surface of the conveying belt 3. In this embodiment, the guiding and pressing plate 432 is arc-shaped, one end of the guiding and pressing plate 432 is disposed on the transmission surface of the transmission belt 3, and the other end of the guiding and pressing plate 432 extending out of the transmission belt 3 is in the shape of a curled edge bending outward, so as to facilitate smooth butt joint between the guiding and pressing plate 432 and the sweeping plate assembly 41 rotating at high speed.
Specific application example 3: as shown in fig. 8 to 10, the guiding member 43 includes two guiding sliding plates 433 respectively disposed near the bearing seat 2, the guiding sliding plates 433 have a slope guiding surface, a second movable guide roller 4222 matched with the guiding sliding plates 433 is disposed at the other end of each movable pull rod 422, and the second movable guide roller 4222 rolls on the slope guiding surface of the guiding sliding plate 433 to make the movable pull rod 422 reciprocate along the height direction of the sampling head 1, so as to pull the sweeping plate assembly 41 to be rapidly guided onto the conveying surface of the conveying belt 3, or make the sweeping plate assembly 41 extend to the conveying surface of the conveying belt 3 to complete squeezing sweeping. When the sweeping plate assembly 41 is about to contact the conveying belt 3, the second movable guide roller 4222 just slides on the upper portion of the slope guide surface of the guide sliding plate 433, and is limited by the slope guide surface, so that the movable pull rod 422 pulls the sweeping plate assembly 41 to be guided onto the conveying surface of the conveying belt 3 quickly and accurately without hitting the edge of the conveying belt 3. While the sweep plate assembly 41 has been guided into contact with the conveyor belt 3, the second movable idler 4222 has just slid to the lower portion of the ramp guide surface of the guide slider 433, and the second movable idler 4222 is no longer influenced by the restriction of the ramp guide surface, so that the movable rod 422 also no longer pulls and restricts the sweep plate assembly 41. At the same time, the squeegee assembly 41, which is no longer restrained by the tension, will extend toward the conveying surface of the conveyor belt 3 and perform the squeegeeing operation under the influence of the elastic members 423 and the centrifugal force of the high-speed rotation.
The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above-mentioned embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may be made by those skilled in the art without departing from the principle of the invention.
Claims (8)
1. A full-section sampling device comprises a sampling head (1) capable of rotating, wherein the sampling head (1) is installed above a material conveying belt (3) through a bearing seat (2), the sampling head (1) is used for scraping materials on the conveying belt (3) by rotating on the plane of the cross section of the conveying belt (3), and the full-section sampling device is characterized in that a scraping mechanism (4) capable of reciprocating along the height direction of the sampling head (1) is arranged at the sampling end of the sampling head (1), and the scraping mechanism (4) extends to the conveying surface of the conveying belt (3) during rotary sampling to extrude and scrape the conveying surface of the conveying belt (3) so as to complete full-section sampling operation; the scraping and sweeping mechanism (4) comprises a scraping and sweeping plate assembly (41) arranged at the end of the sampling head (1) and a movable pull rod assembly (42) used for fixing the scraping and sweeping plate assembly (41), the scraping and sweeping mechanism (4) further comprises a guide part (43) matched with the scraping and sweeping plate assembly (41) and the movable pull rod assembly (42), the scraping and sweeping plate assembly (41) moves under the guide effect of the guide part (43) during sampling so that the scraping and sweeping plate assembly (41) can be rapidly guided to the transmission surface of the transmission belt (3) to complete extrusion scraping and sweeping, the scraping and sweeping plate assembly (41) comprises an elastic scraping plate (411) used for being in contact with the transmission belt (3), and during sampling, an arc-shaped chamfer is arranged at the position, close to the transmission belt (3) at first, of the scraping and sweeping plate assembly (41) so that the scraping and sweeping plate assembly (41) can be rapidly guided to the transmission surface of the.
2. The full-section sampling device according to claim 1, wherein the movable pull rod assembly (42) comprises more than two sets of matched limit pull rod seats (421) and movable pull rods (422), the more than two limit pull rod seats (421) are respectively arranged at two sides of the sampling head (1), each limit pull rod seat (421) is provided with a movable pull rod (422) capable of reciprocating along the height direction of the sampling head (1), and one end of each movable pull rod (422) is fixedly connected with the sweeping plate assembly (41).
3. The full-section sampling device according to claim 2, wherein the movable pull rod (422) between the limiting pull rod seat (421) and the sweeping plate assembly (41) is sleeved with an elastic member (423) for pressing the sweeping plate assembly (41) downwards so that the sweeping plate assembly (41) presses the transmission surface of the sweeping conveyor belt (3).
4. The full-face sampling device according to claim 2, characterized in that the wiper plate assembly (41) comprises a hard wiper plate (412) for connection with the movable tie rod (422), the hard wiper plate (412) being arranged on the sampling port of the sampling head (1), the elastic wiper plate (411) being arranged on the hard wiper plate (412).
5. The full-section sampling device according to claim 1, wherein the guide member (43) comprises two guide cam grooves (431) which are respectively arranged on two inner side surfaces of the bearing seat (2) and are concave, a first movable guide wheel (4221) matched with the guide cam grooves (431) is arranged at the other end of each movable pull rod (422), the first movable guide wheel (4221) extends into the guide cam grooves (431) and rolls along the cam groove surface to enable the movable pull rod (422) to reciprocate along the height direction of the sampling head (1) so as to pull the scraping and sweeping plate assembly (41) to enable the scraping and sweeping plate assembly (41) to be rapidly guided onto the transmission surface of the transmission belt (3) or enable the scraping and sweeping plate assembly (41) to extend to the transmission surface of the transmission belt (3) to complete extrusion scraping and sweeping.
6. The full-section sampling device according to claim 1, wherein the guiding member (43) comprises a guiding pressing plate (432) for pressing the scraping and sweeping plate assembly (41), the guiding pressing plate (432) is arranged at one side edge of the conveying belt (3), and when the sampling is rotated, the scraping and sweeping plate assembly (41) firstly contacts the guiding pressing plate (432) and is quickly guided onto the conveying surface of the conveying belt (3) after being pressed by the guiding pressing plate (432).
7. The full-section sampling device according to claim 6, wherein the guiding and pressing plate (432) is arc-shaped, one end of the guiding and pressing plate (432) is disposed on the conveying surface of the conveying belt (3), and the other end of the guiding and pressing plate (432) extending out of the conveying belt (3) is outward-bent and curled.
8. The full-section sampling device according to claim 1, wherein the guide member (43) comprises two guide sliding plates (433) respectively disposed near the bearing seat (2), the guide sliding plates (433) have a slope guide surface, a second movable guide wheel (4222) matched with the guide sliding plate (433) is disposed at the other end of each movable pull rod (422), and the second movable guide wheel (4222) rolls on the slope guide surface of the guide sliding plate (433) for reciprocating the movable pull rod (422) along the height direction of the sampling head (1) so as to pull the scraping and sweeping plate assembly (41) to be rapidly guided onto the transmission surface of the transmission belt (3) or make the scraping and sweeping plate assembly (41) extend to the transmission surface of the transmission belt (3) for completing squeezing and sweeping.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610375961.XA CN105865828B (en) | 2016-05-31 | 2016-05-31 | Full-section sampling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610375961.XA CN105865828B (en) | 2016-05-31 | 2016-05-31 | Full-section sampling device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105865828A CN105865828A (en) | 2016-08-17 |
| CN105865828B true CN105865828B (en) | 2020-01-21 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107202710B (en) * | 2017-05-26 | 2023-12-01 | 湖南三德科技股份有限公司 | Belt middle part sampler |
| CN107367399A (en) * | 2017-07-23 | 2017-11-21 | 马飞 | Automatic coal sampling device |
| CN108827688A (en) * | 2018-04-09 | 2018-11-16 | 张益民 | A kind of coal conveyer belt crosses scraper-type sampling apparatus |
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