Telescopic sampling rod and sampling device
Technical Field
The utility model relates to a quality of water sampling equipment field specifically is a telescopic sampling rod and sampling device.
Background
In the field of water quality sampling detection, sampling requirements of different sampling scenes such as a pollution source discharge port, a sewage treatment plant, a shore, a bridgehead, a ship and the like are frequently met, however, the places are far away from sampling personnel sometimes, and the sampling personnel have certain safety risks when placing a sampler.
Meanwhile, water with a fixed depth is often required to be sampled, the currently and commonly adopted sampling method is that a sampling barrel is sunk to a sampling water area, the sampling barrel is filled with water, the depth required by the self weight sinking of the sampling barrel is utilized, but the current sampler is immersed in the water area, and water enters the sampling barrel in the submerging process of the sampling barrel, so that the finally collected water is not completely the water quality with the specified depth, but the water above the specified depth is collected, and the sampling representativeness is poor.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that a telescopic sampling rod and sampling device convenient to put in appointed position with the sample thief is provided.
The utility model adopts the technical proposal that: a telescopic sampling rod comprises an outer sleeve, an inner sleeve sleeved in the outer sleeve, a roller arranged at the top of the inner sleeve and a telescopic adjusting structure arranged on the inner sleeve and the outer sleeve.
Furthermore, flexible regulation structure is including setting up at the base of outer sleeve pipe top, rotating the pressing plate that sets up on the base through the round pin axle, setting up at the cardboard at pressing plate top and setting up including the spacing card hole that is used for the cardboard joint on the sleeve pipe the epaxial cover of round pin has the torsional spring, the both ends of torsional spring contact with base and pressing plate respectively.
Furthermore, the top of the inner sleeve is provided with a mounting seat, the roller is fixed on the mounting seat through a pin shaft, and the mounting seat is also provided with a lifting ring screw. Furthermore, a fixing sleeve is arranged between the tops of the inner sleeve and the outer sleeve, an elastic sheet is arranged on the fixing sleeve, a clamping block is arranged on the elastic sheet, and a clamping hole matched with the clamping block is formed in the outer sleeve.
A sampling device comprises a telescopic sampling rod, a sampling rope arranged on a roller and a sampler arranged at the lower end of the sampling rope; the sampler comprises a sampling barrel, a piston type sampling device arranged in the sampling barrel, a driving device used for driving the piston type sampling device to move and a floating ball fixedly connected with the sampling barrel and used for controlling the submergence depth of the sampling barrel.
Further, the piston type sampling device comprises a piston base arranged in the sampling barrel and a piston sleeve fixed on the piston base;
the driving device comprises an elastic pull rope and a limiting device for limiting the piston type sampling device by utilizing buoyancy, one end of the elastic pull rope is fixed with the piston base or the piston sleeve, and the other end of the elastic pull rope is fixed with the barrel body of the sampling barrel.
Further, stop device rotates the limiting plate that sets up in the backup pad and sets up the one end complex spacing groove that is used for with the limiting plate on the piston sleeve including setting up in the backup pad at sampling bucket top through the pivot, the rotation of limiting plate realizes spacing or stepping down to the piston sleeve.
Furthermore, the floating ball is fixedly connected with the other end of the limiting plate through a pull wire, and the rotating shaft of the limiting plate is located at one end close to the piston sleeve.
Furthermore, a sampling port is arranged on the bottom plate of the sampling barrel, and the sampling port is sealed when the piston type sampling device is positioned at the lowest end position.
Furthermore, the elastic pull rope is a rubber band, and the other end of the elastic pull rope is fixedly connected with the outer side wall of the sampling barrel after bypassing the rotating shaft arranged on the supporting plate.
The utility model discloses an actively the effect does: the utility model discloses a sampling rod length is scalable, and the top is equipped with the gyro wheel that is used for placing the sampling rope, through sampling rope hoist and mount sample thief to assigned position, easy operation, convenient to carry can satisfy the sampling demand of different sampling scenes such as pollution source discharge port, sewage treatment plant, bank, bridgehead, take advantage of the ship, can improve sampling personnel's specialty degree and security greatly.
The sampler utilizes drive arrangement to drive piston sampling device and carries out work, before the sampling bucket does not reach appointed degree of depth, piston sampling device is out of work, and the water sample can not enter into the sampling bucket, and stop device removes the limiting displacement to piston sampling device after the sampling bucket reaches appointed degree of depth, and under the effect of elasticity stay cord, piston base upward movement to realize the sampling. Stop device is connected with the floater, during the use, only needs to set for the length of acting as go-between of floater and sampling bucket, and after the sampling bucket reachd appointed degree of depth, under the buoyancy of floater and the effect of sampling bucket self gravity, the limiting plate just can realize deflecting, loses the limiting displacement to piston sleeve, can realize automatic unblock, can carry out the sampling work automatically after the sampling bucket reaches appointed degree of depth.
Drawings
FIG. 1 is a schematic view of the structure of the telescopic sampling rod of the present invention;
FIG. 2 is a schematic view of the telescopic adjustment structure of the present invention;
FIG. 3 is a schematic view of the fixing sleeve of the present invention;
FIG. 4 is a schematic view of the sampler of the present invention;
FIG. 5 is a schematic structural view of the sampling port of the present invention;
fig. 6 is a schematic structural view of the piston-type sampling device of the present invention;
fig. 7 is a schematic structural view of the limiting device of the present invention.
Detailed Description
As shown in fig. 1-3, the telescopic sampling rod of the present invention includes an outer sleeve 13, an inner sleeve 14 sleeved in the outer sleeve 13, a roller 15 disposed at the top of the inner sleeve 14, and a telescopic adjusting structure disposed on the inner sleeve 14 and the outer sleeve 13. The winding has the sampling rope on gyro wheel 15, and the lower extreme and the sample thief of sampling rope are connected, and its other end is walked around gyro wheel 15 back and is controlled by the sampling personnel, can adjust the length of sampling rod as required, makes the sample thief can reach required position, then adjusts the sampling rope and makes the sample thief descend into water.
The inner sleeve and the outer sleeve are of square sleeve structures and are made of aluminum profiles, and therefore the aluminum profile is light in weight and high in strength.
The telescopic adjusting structure comprises a base 28 arranged at the top of the outer sleeve 13, a pressing plate 25 rotatably arranged on the base 28 through a pin 29, a clamping plate 26 arranged at the top of the pressing plate 25, and a limiting clamping hole 27 arranged on the inner sleeve 14 and used for clamping the clamping plate 26, wherein a torsion spring is sleeved on the pin 29, and two ends of the torsion spring are respectively in contact with the base 28 and the pressing plate 25. Under the normal state, due to the action of the torsion spring, the clamping plate 26 is always positioned in the limiting clamping hole 27 and is matched with the limiting clamping hole, so that the inner sleeve and the outer sleeve are prevented from loosening. When the length needs to be adjusted, the bottom of the pressing plate 25 is pressed downwards, so that the clamping plate 26 at the top of the pressing plate is separated from the limiting clamping hole 27, and the limitation can be removed.
The top of the inner sleeve 14 is provided with a mounting seat 17, the roller 15 is rotatably arranged on the mounting seat 17 through a rotating shaft, and the mounting seat 17 is further provided with a lifting bolt 16.
As shown in fig. 3, a fixing sleeve 22 is disposed between the inner sleeve 14 and the outer sleeve 13, the fixing sleeve 22 is fixed on the outer side wall of the inner sleeve 14, a spring 24 is disposed on the fixing sleeve 22, a latch 23 is disposed on the spring 24, and a latch hole 21 matched with the latch 23 is disposed on the outer sleeve 13. Under the effect of shell fragment 24, fixture block 23 and card hole 21 joint cooperation prevent that the internal and external sleeve from appearing not hard up, when needs adjust, need inwards press fixture block 23, make it break away from with card hole 21.
As shown in the attached figures 4-7, the sampler comprises a sampling barrel 1, a sampling port 5 located on the bottom plate of the sampling barrel 1, a piston type sampling device installed inside the sampling barrel 1 and a driving device used for driving the piston type sampling device to perform sampling work, wherein a floating ball 7 is further arranged on the sampling barrel 1 through a pull wire 6 so as to enable the sampling barrel 1 to suspend at a specified depth, and the pull wires 6 with different lengths can be selected according to different requirements of the depth.
Piston sampling device is including setting up piston base 8 in sampling barrel 1 and fixing piston sleeve 2 on piston base 8, and the external diameter of piston bottom plate 8 corresponds with the internal diameter of sampling barrel 1 to can reciprocate in sampling barrel 1, its principle is similar with ordinary syringe, and in moving up with water from sample connection 5 inhales sampling barrel 1 through piston bottom plate 8, drive arrangement just is used for driving piston bottom plate 8 upward movement.
A supporting plate 3 is arranged at the top of the sampling barrel 1, and the piston sleeve 2 penetrates through the supporting plate 3 to ensure that the piston sleeve 2 moves along the vertical direction.
Drive arrangement includes elasticity stay cord 4 and is used for carrying out spacing stop device to piston sampling device, elasticity stay cord 4 adopts the rubber rope, and its one end is fixed with piston base 8 or piston sleeve 2, and the other end is walked around the pivot of setting in backup pad 3 and is fixed with the lateral wall of the 1 ladle body of sampling bucket, in this embodiment, is fixed with go-between 9 on piston base 8, and the one end and the go-between 9 of elasticity stay cord 4 are fixed.
Stop device rotates the limiting plate 10 that sets up in backup pad 3 and sets up on piston sleeve 2 and be used for with limiting plate 10's one end complex spacing groove 11 including setting up in the backup pad 3 at 1 top of sampling bucket through the pivot, limiting plate 10's rotatory spacing or abdicating piston sleeve 2 of realization. Under initial condition, piston sleeve 2 is located the bottom of sampling bucket 1 and seals sampling port 5, and the spacing groove 11 on the piston sleeve 2 is supported to the one end of limiting plate 10 simultaneously, and the pivot of limiting plate 10 is located the one end that is close to piston sleeve 2, utilizes lever principle, and the right side end as shown in fig. 4 of limiting plate 10 contacts with spacing groove 11 all the time, can prevent effectively that piston sleeve 2 from rising under the buoyancy, guarantees that sampling bucket 1 dives the in-process can not gather the sample.
The floater 7 is through the left side fixed connection who acts as go-between 6 and limiting plate 10, after sampling bucket 1 sinks to the assigned position, act as go-between 6 and flare-out, the power that acts on limiting plate 10 this moment has the buoyancy of floater and sampling bucket 1's gravity, under the dual effort, limiting plate 10 is rotatory, and its right side end breaks away from with spacing groove 11, loses the limiting displacement to piston sleeve 2, under the elastic action of elasticity stay cord 4, piston base 8 just can the upward movement, begins to carry out the water sample collection.
The utility model discloses utilize stop device to inject piston base 8's position, at the sunken in-process of sampling bucket 1, remain the limiting displacement throughout, piston base 8 seals sampling port 5 all the time, can not gather at this in-process. After the specified position is reached, the limiting plate 10 deflects under the action of the buoyancy of the floating ball 7 and the gravity of the sampling barrel 1, the limiting effect on the piston base 8 is lost, and the piston base 8 is pulled by the elastic pull wire 4 to move upwards to perform the sampling work.
Sampling device has realized the water sample collection of appointed degree of depth, does not have water to enter into sampling barrel 1 before sampling barrel 1 does not reach appointed degree of depth, has improved the accuracy of sampling greatly.
The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the embodiments of the present invention.