CN111457974A - High-range and high-precision double-head scraper flowmeter - Google Patents

Abstract

The invention relates to a high-range and high-precision double-head scraper flowmeter, which comprises a shell, a first fixed block, a cylinder, a sampling groove, a second fixed block, a fixed cylinder, a first connecting rod and a second connecting rod, the second connecting rod is fixedly connected with a first rotating motor which is provided with an output shaft, the output shaft is connected with a first hemispherical plate, the first rotating motor is fixedly connected with a second hemispherical plate, the output shaft can drive the first hemispherical plate to rotate towards the second hemispherical plate until the first hemispherical plate and the second hemispherical plate form a sphere, two vertical plates are integrally connected with two sides above the second fixed block, the two vertical plates are provided with a same circular groove in a penetrating way, the limiting rod in the circular groove is arranged in the vertical plate in a penetrating mode, the cylinder is integrally connected with limiting plates on two sides of the second fixing block, and limiting grooves used for the limiting rod to be clamped in are formed in the limiting plates. The invention has the advantages of high measuring range and high precision.

Description

High-range and high-precision double-head scraper flowmeter

Technical Field

The invention relates to the technical field of flowmeters, in particular to a high-range and high-precision double-head scraper flowmeter.

Background

The volumetric flowmeter is used as a measuring instrument for continuously or discontinuously measuring the volume flow of liquid flowing through a closed pipeline, and is suitable for the transfer of crude oil and finished products and the measurement of trade settlement. The liquid between the inlet and the outlet of the flowmeter has a pressure difference which needs to be maintained in the whole metering process so as to drive the scraper and the rotor to rotate, and the scraper design in the flowmeter is an item which can prevent the liquid entering the flowmeter from generating turbulence and the pressure difference from being reduced. The liquid detected in the flowmeter is not invariable and needs to be detected by a plurality of liquids, and the flowmeter needs to constantly determine whether the liquid in the flowmeter is not degenerated or the components are invariable in the measuring process to ensure high precision, so that the liquid in the flowmeter needs to be detected frequently to avoid errors and improve the precision.

In addition, the span ratio in current flow meters is a ratio volumetric between the minimum measurable flow and the maximum measurable flow, and the flow meters currently have two main forms: turbine flowmeters and skip bucket flowmeters.

The principle of a turbine flowmeter is to divide the fluid into a number of discrete individual volumes and then accumulate the total number of unit volumes through the flowmeter to determine the flow rate. The flowmeter is mainly used for measuring clean fluid, and when more impurities are contained in the fluid, the fouling phenomenon can occur, so that the measuring pipe is blocked, and the measurement cannot be carried out.

The skip bucket flowmeter is mainly configured to calculate the number of times of reversal of the skip bucket per unit time to determine the flow rate. The turndown ratio of such meters is small. The flow cannot be measured at a high flow rate, and the flow cannot be measured at a low flow rate. In addition, since the volume is calculated by calculating the turnover frequency of the dump bucket, the error is relatively large. In addition, after the tipping bucket overturns for a long time, the inside of the tipping bucket is also scaled, so that the calculation of the volume is influenced, and the measurement precision is further influenced.

Both of the above flow meters have drawbacks that require improvement.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to provide a high-range and high-precision double-head scraper flowmeter which not only has the advantages of high range, but also has the advantage of high precision.

In order to achieve the purpose, the invention provides the following technical scheme: a high-range and high-precision double-head scraper flowmeter comprises a shell, wherein a first fixed block is arranged above the shell, a cylinder is integrally connected above the first fixed block, the cylinder is provided with a sampling groove which penetrates through the cylinder along the axial lead of the cylinder and is communicated with the inside of the shell, a second fixed block is connected above the cylinder, a fixed cylinder is fixedly connected below the second fixed block, the fixed cylinder is connected with a first connecting rod, the first connecting rod is clamped with a second connecting rod, the second connecting rod is fixedly connected with a first rotating motor, the first rotating motor is provided with an output shaft, the output shaft is connected with a first hemispherical plate, the first rotating motor is fixedly connected with a second hemispherical plate, the output shaft can drive the first hemispherical plate to rotate towards the second hemispherical plate until the first hemispherical plate and the second hemispherical plate form a sphere, two risers are connected with in the both sides an organic whole of the top of second fixed block, two same circular slot is worn to be equipped with by the riser, the gag lever post that is in the circular slot is worn to be equipped with by the riser, cylinder an organic whole is connected with the limiting plate that is in second fixed block both sides, the limiting plate is provided with the spacing groove that is used for the gag lever post card to go into.

By adopting the technical scheme, when a sample needs to be taken, the fixed cylinder drives the first connecting rod to move downwards so as to drive the second connecting rod to move downwards, the movement of the second connecting rod drives the first rotating motor to move downwards so as to drive the output shaft to move downwards, the downward movement of the output shaft and the first rotating motor drives the first hemispherical plate and the second hemispherical plate to move downwards, when the first hemispherical plate and the second hemispherical plate move downwards below the liquid level in the shell, the first rotating motor drives the output shaft to drive the first hemispherical plate to rotate towards the second hemispherical body, after one end of the first hemispherical plate and one end of the second hemispherical body are separated, the liquid in the shell flows into the first hemispherical body and the second hemispherical plate, then the first rotating motor drives the output shaft to rotate so as to drive the first hemispherical plate to rotate towards the second hemispherical body until a closed spherical body is formed, and therefore, the liquid is in the closed first hemispherical plate and the closed second hemispherical body, then the fixed cylinder drives the first hemisphere plate and the second hemisphere to ascend and return to the original position, and the purpose of sampling can be achieved. When needing to take out fixed cylinder in addition, thereby can pass two risers of circular slot removal with the shell, thereby the removal of two risers can drive the removal of second fixed block and conveniently stimulate fixed cylinder, when needing fixed second fixed block, passes one of them circular slot and spacing groove with the foreign object simultaneously, can let second fixed block and cylinder joint, avoids the second fixed block to rock.

The invention is further configured to: one side of the first connecting rod is provided with a triangular groove, and the second connecting rod is integrally connected with a triangular block which can be clamped into the triangular groove.

Through adopting above-mentioned technical scheme, because the second connecting rod is in the cylinder, consequently the second connecting rod can only remove along the axial lead of self, consequently the buckle connection cooperation of triangular groove and triangle piece lets first connecting rod and second connecting rod can inseparable buckle connection. When the first connecting rod and the second connecting rod need to be separated, only the triangular block and the triangular groove need to be separated.

The invention is further configured to: the inside wall of cylinder is provided with the standing groove with the sample groove intercommunication, be provided with first promotion cylinder in the standing groove, first promotion cylinder is connected with and promotes the piece.

Through adopting above-mentioned technical scheme, when needing to take out the second connecting rod, the first promotion cylinder of drive drives and promotes the piece extrusion second connecting rod can.

The invention is further configured to: the side of cylinder is provided with the sampling tube, the middle part of sampling tube is provided with the through groove that runs through the sampling tube.

Through adopting above-mentioned technical scheme, second connecting rod, first rotation motor and hemisphere board are promoted to the opening part of running through the groove after, take out from running through the groove can.

The invention is further configured to: the sampling tube is provided with the elevator that is in through groove opening part, elevator and sampling tube threaded connection, the below of elevator is provided with first rotary rod.

Through adopting above-mentioned technical scheme, let first rotary rod rotate and drive the elevator and rotate round the axial lead of self, the elevator rotates the back and will remove along the axial lead of self, moves the back towards the opening part that runs through the groove when the elevator, and the hemisphere board that is in on the elevator will receive the effect of elevator and remove until passing through the outside that the groove is in the sampling tube.

The invention is further configured to: the top in riser is provided with the extrusion groove, the area of the bottom of opening to the extrusion groove in extrusion groove constantly reduces, the inside wall in extrusion groove is provided with a plurality of sharp teeth that are used for increasing frictional force, the extrusion groove communicates with the circular slot.

By adopting the technical scheme, the external rod-shaped object is clamped in from the extrusion groove from the upper part of the vertical plate until the rod-shaped object passes through the extrusion groove and is positioned in the circular groove, the diameter of the circular groove is slightly larger than the bottom of the extrusion groove, the rod-shaped object is conveniently clamped in the circular groove by the arrangement of the extrusion groove, and the friction force between the rod-shaped object and the extrusion groove is enhanced by the arrangement of the sharp teeth.

The invention is further configured to: the inner side wall of the cylinder is provided with a positioning cylinder, the positioning cylinder is connected with a first positioning block, the first positioning block is in an arc shape, and the positioning cylinder in which the first positioning block is located faces one side of the hemispherical plate.

Through adopting above-mentioned technical scheme, the rigid joint of head rod and second connecting rod is when being in the same place, and both connect and not firm, and the location cylinder drives first locating piece and removes until the extrusion hemisphere board this moment, can let the one end of three hornblocks and the tank bottom butt of triangular groove, let both connect more closely.

The invention is further configured to: one side of the lifting block towards the first rotary rod is provided with a groove, the two sides of the groove are provided with first springs, the other end of each first spring is fixedly connected with a clamping block, and one end of each first rotary rod towards the lifting block is provided with a clamping groove for clamping the clamping block.

Through adopting above-mentioned technical scheme, when needing to use first rotary rod, move the one end of first rotary rod towards the recess, two fixture blocks will be extruded to the one end of this in-process first rotary rod, let two fixture blocks remove towards the direction that deviates from each other, when first rotary rod removes to draw-in groove and fixture block and is in the coplanar, the fixture block will be gone into the joint that realizes fixture block and first rotary rod in the draw-in groove under the effect of first spring, the fixture block is in the recess, can only remove along the length direction of recess, rotate first rotary rod and can drive the elevator and rotate after that.

The invention is further configured to: the middle part of the shell is provided with a rotating plate, the middle part of the rotating plate is provided with a rotating rod, the side surface of the rotating plate is connected with a plurality of matching plates, a first gear is sleeved at the top part of the rotating rod, the first gear is meshed with a second gear, a third connecting rod is arranged at the axial lead of the second gear and connected with a third gear, the third gear is meshed with a fourth gear, a third fixing block is arranged above the fourth gear, one side of the third fixing block, which is deviated from the fourth gear, is provided with a detection round point, a pulse transmitter is arranged above the fourth gear, a counter for receiving the pulse transmitter is arranged above the shell, one side of the shell is provided with a filter pipe, a first filter screen is arranged in the filter pipe, and a first distance sensor and a second distance sensor which are positioned at two sides of the fourth gear are arranged in the shell, a second positioning block is fixedly connected to the middle part of the first filter screen, a second pushing cylinder is arranged at the middle part of the second positioning block, the second pushing cylinder is connected with a telescopic rod, a second rotating motor connected with the second pushing cylinder is arranged inside the second positioning block, a hollow groove is arranged in the pipe wall of the filter pipe, a fixed rod is arranged in the hollow groove, the fixed rod is sleeved with a second rotary rod which can rotate around the axial lead of the fixed rod, the second rotating rod is perpendicular to the telescopic rod, one end of the second rotating rod is provided with a second filter screen partially positioned in the filter pipe, a first cylinder is arranged in the second positioning block and is connected with a movable rod, a convex groove is arranged on the side surface of the movable rod, the convex type groove is internally provided with a convex type block which is always positioned in the convex type groove, and the bottom of the convex type block is provided with a second spring which is fixedly connected with the groove bottom of the convex type groove.

Through adopting above-mentioned technical scheme, liquid flows in the filter tube after in, through the filter screen, some impurity will be detained in one side of filter screen, back in liquid inflow casing, liquid will strike the cooperation board and then drive the rotor plate and rotate, the rotation of rotor plate will drive first gear, the rotation of first gear drives the rotation of second gear and then drives the third connecting rod and rotate around the axial lead of self, the rotation of third connecting rod drives the rotation of third gear and then drives the fourth gear, the rotation of fourth gear will drive the rotation of third fixed block and then drive the rotation of detection dot round the axial lead of fourth gear, thereby after the rotatory round of detection dot, thereby pulse transmitter will receive signal and form the pulse, thereby the counter can receive the pulse and will detect dot pivoted number of times and show on the screen of counter. The invention measures the flow by utilizing the rotation of the gear and has the advantage of high measuring range ratio. The detection round point can be detected only after the fourth gear rotates for a circle, when the gear rotates for less than the circle, the corresponding rotation amplitude cannot be detected, so the accuracy is low, the first distance sensor and the second distance sensor are additionally arranged and positioned on two sides of the fourth gear, and after the detection round point moves, the first distance sensor and the second distance sensor can detect the distance of the detection round point, thereby the rotating angle of the detection round point on the third fixed block is calculated, and the measurement accuracy is improved. The second promotes the cylinder and drives the telescopic link and remove along the axial lead of self, after the telescopic link removed to second rotary rod department, the second rotated the motor and driven the second and promote the cylinder and rotate and then drive the telescopic link and rotate, the telescopic link will extrude the second rotary rod and then let the second rotary rod rotate round the axial lead of dead lever after rotating, the back is rotated to the second rotary rod, the second filter screen that is in second rotary rod top falls to one side of first filter screen because of the supporting role that no longer receives the second rotary rod, thereby strengthen the filtering action of filter tube. After the telescopic link is in the outside of second locating piece, protruding type piece receives the effort of second spring and can move towards the direction that deviates from the tank bottom of convex type groove to the part is in the outside of telescopic link, is used for slowing down the velocity of flow between first filter screen and the second filter screen, and the cooperation in convex type piece and convex type groove lets protruding type piece can only be in on the lateral wall of telescopic link in addition, avoids both to separate.

The invention is further configured to: the telescopic link includes the concave plate of a plurality of mutual joints, the one end of concave plate is provided with the hook piece, the side of concave plate is provided with the holding tank that is used for holding the hook piece, the hook piece can remove along the length direction of holding tank, and is a plurality of the concave plate is provided with the intercommunication groove that runs through a plurality of concave plates simultaneously.

Through adopting above-mentioned technical scheme, the piston rod that the second promoted the cylinder passes the intercommunication groove and pushes up on the inside wall of concave plate, along with the removal of piston, the concave plate that is in furthest will drive the hook piece and remove in the holding tank, thereby when the hook piece remove to the one end of holding tank after, the concave plate that is in furthest will drive adjacent concave plate and remove the removal that realizes a plurality of concave plates and then realize the flexible of telescopic link. The plurality of concave plates can form a shell and play a role in protection.

In conclusion, the invention has the following beneficial effects:

when a sample needs to be taken, the fixed cylinder drives the first connecting rod to move downwards so as to drive the second connecting rod to move downwards, the movement of the second connecting rod drives the first rotating motor to move downwards so as to drive the output shaft to move downwards, the downward movement of the output shaft and the first rotating motor drives the first hemispherical plate and the second hemispherical plate to move downwards, when the first hemispherical plate and the second hemispherical plate move downwards below the liquid level in the shell, the first rotating motor drives the output shaft to drive the first hemispherical plate to rotate towards the second hemispherical body, after one end of the first hemispherical plate and one end of the second hemispherical body are separated, the liquid in the shell flows into the first hemispherical body and the second hemispherical plate, then the first rotating motor drives the output shaft to rotate so as to drive the first hemispherical plate to rotate towards the second hemispherical body until a closed spherical body is formed, so that the liquid is positioned in the closed first hemispherical plate and the closed second hemispherical body, then the fixed cylinder drives the first hemispherical plate and the second hemispherical body to ascend to return to the original position, the purpose of sampling can be achieved. When needing to take out fixed cylinder in addition, thereby can pass two risers of circular slot removal with the shell, thereby the removal of two risers can drive the removal of second fixed block and conveniently stimulate fixed cylinder, when needing fixed second fixed block, passes one of them circular slot and spacing groove with the foreign object simultaneously, can let second fixed block and cylinder joint, avoids the second fixed block to rock.

Drawings

FIG. 1 is a schematic structural diagram of an embodiment;

FIG. 2 is a schematic structural diagram of a connection relationship among a cylinder, a sampling tube, a vertical plate, a limiting plate and a second fixing block in the embodiment;

FIG. 3 is a schematic structural view showing a connection relationship between the rotating motor and the first hemispherical plate in the embodiment;

FIG. 4 is a schematic structural diagram of the connection relationship between the risers, circular grooves, extrusion grooves and tines in the embodiment;

FIG. 5 is a schematic diagram of the structure of the embodiment after the cylinder is removed;

FIG. 6 is a sectional view of the embodiment;

FIG. 7 is an enlarged view of a portion of area A of FIG. 6;

fig. 8 is a partially enlarged view of the region B in fig. 6.

Reference numerals: 1. a housing; 2. a first fixed block; 3. a cylinder; 4. a sampling groove; 5. a second fixed block; 6. fixing the air cylinder; 7. a first connecting rod; 8. a first rotating electric machine; 9. a first hemispherical plate; 10. a second hemispherical plate; 11. a vertical plate; 12. a circular groove; 13. a limiting rod; 14. a limiting plate; 15. a limiting groove; 16. a triangular groove; 17. a triangular block; 18. a placement groove; 19. a first push cylinder; 20. a pushing block; 21. a sampling tube; 22. a through groove; 23. a lifting block; 24. a first rotating rod; 25. extruding a groove; 26. pointed teeth; 27. positioning the air cylinder; 28. a first positioning block; 29. a groove; 30. a first spring; 31. a clamping block; 32. a card slot; 33. a rotating plate; 34. rotating the rod; 35. a mating plate; 36. a first gear; 37. a second gear; 38. a third connecting rod; 39. a third gear; 40. a fourth gear; 41. a third fixed block; 42. detecting dots; 43. a pulse transmitter; 44. a counter; 45. a filter tube; 46. a first filter screen; 47. a first distance sensor; 48. a second distance sensor; 49. a second positioning block; 50. a second push cylinder; 51. a telescopic rod; 52. a second rotating electric machine; 53. an empty groove; 54. fixing the rod; 55. a second rotating rod; 56. a second filter screen; 57. a first cylinder; 58. a movable rod; 59. a convex groove; 60. a convex block; 61. a second spring; 62. a concave plate; 63. hooking the block; 64. accommodating grooves; 65. a communicating groove; 66. a second connecting rod.

Detailed Description

The invention is further described with reference to the accompanying drawings.

A high-range and high-precision double-head scraper flowmeter is shown in figures 1-8 and comprises a shell 1, wherein a first fixed block 2 is arranged above the shell 1, a cylinder 3 is integrally connected above the first fixed block 2, the cylinder 3 is provided with a sampling groove 4 which penetrates through the cylinder 3 along the axial lead of the cylinder 3 and is communicated with the inside of the shell 1, a second fixed block 5 is connected above the cylinder 3, a fixed cylinder 6 is fixedly connected below the second fixed block 5, the fixed cylinder 6 is connected with a first connecting rod 7, the first connecting rod 7 is connected with a second connecting rod 66 in a clamping manner, the second connecting rod 66 is fixedly connected with a first rotating motor 8, the first rotating motor 8 is provided with an output shaft which is connected with a first hemispherical plate 9, the first rotating motor 8 is fixedly connected with a second hemispherical plate 10, go out the axle and can drive first hemisphere board 9 and rotate until first hemisphere board 9 and second hemisphere board 10 orientation towards second hemisphere board 10 and constitute the spheroid, both sides an organic whole of the top of second fixed block 5 is connected with two risers 11, two same circular slot 12 is worn to be equipped with by riser 11, riser 11 is worn to be equipped with gag lever post 13 that is in circular slot 12, 3 an organic whole of cylinder are connected with the limiting plate 14 that is in 5 both sides of second fixed block, limiting plate 14 is provided with the spacing groove 15 that is used for gag lever post 13 card to go into.

One side of the first connecting rod 7 is provided with a triangular groove 16, and the second connecting rod 66 is integrally connected with a triangular block 17 which can be clamped in the triangular groove 16.

The inside wall of cylinder 3 is provided with the standing groove 18 with sample groove 4 intercommunication, be provided with first promotion cylinder 19 in the standing groove 18, first promotion cylinder 19 is connected with and promotes piece 20.

The side of cylinder 3 is provided with sampling tube 21, the middle part of sampling tube 21 is provided with the through groove 22 that runs through sampling tube 21.

The sampling tube 21 is provided with a lifting block 23 at an opening of the through groove 22, the lifting block 23 is in threaded connection with the sampling tube 21, and a first rotating rod 24 is arranged below the lifting block 23.

The top of riser 11 is provided with extrusion groove 25, the area of the bottom of opening to extrusion groove 25 of extrusion groove 25 constantly reduces, the inside wall of extrusion groove 25 is provided with a plurality of sharp teeth 26 that are used for increasing frictional force, extrusion groove 25 and circular slot 12 intercommunication.

The inner side wall of the cylinder 3 is provided with a positioning cylinder 27, the positioning cylinder 27 is connected with a first positioning block 28, the first positioning block 28 is in an arc shape, and the positioning cylinder 27 at which the first positioning block 28 is located faces one side of the first hemispherical plate 9.

One side of the lifting block 23 facing the first rotating rod 24 is provided with a groove 29, two sides of the groove 29 are provided with first springs 30, the other end of each first spring 30 is fixedly connected with a clamping block 31, and one end of the first rotating rod 24 facing the lifting block 23 is provided with a clamping groove 32 for the clamping block 31 to be clamped in.

The middle part of casing 1 is provided with rotor plate 33, the middle part of rotor plate 33 is provided with dwang 34, the side of rotor plate 33 is connected with a plurality of cooperation boards 35, first gear 36 has been cup jointed at the top of dwang 34, first gear 36 meshes has second gear 37, the axial lead department of second gear 37 is provided with third connecting rod 38, third connecting rod 38 is connected with third gear 39, third gear 39 meshes has fourth gear 40, the top of fourth gear 40 is provided with third fixed block 41, one side that third fixed block 41 deviates from fourth gear 40 is provided with detects dot 42, the top of fourth gear 40 is provided with impulse signaling apparatus 43, the top of casing 1 is provided with the counter 44 that is used for receiving impulse signaling apparatus 43, one side of casing 1 is provided with filter tube 45, be provided with first filter screen 46 in the filter tube 45, a first distance sensor 47 and a second distance sensor 48 which are positioned at two sides of the fourth gear 40 are arranged in the shell 1, a second positioning block 49 is fixedly connected to the middle of the first filter screen 46, a second pushing cylinder 50 is arranged at the middle of the second positioning block 49, the second pushing cylinder 50 is connected with a telescopic rod 51, a second rotating motor 52 connected with the second pushing cylinder 50 is arranged in the second positioning block 49, a hollow groove 53 is arranged in the pipe wall of the filter pipe 45, a fixing rod 54 is arranged in the hollow groove 53, the fixing rod 54 is sleeved with a second rotating rod 55 which can rotate around the axial lead of the fixing rod 54, the second rotating rod 55 is perpendicular to the telescopic rod 51, a second filter screen 56 which is partially positioned in the filter pipe 45 is arranged at one end of the second rotating rod 55, and a first cylinder 57 is arranged in the second positioning block 49, the first cylinder 57 is connected with a movable rod 58, a convex groove 59 is formed in the side face of the movable rod 58, a convex block 60 which is always located in the convex groove 59 is arranged in the convex groove 59, and a second spring 61 which is fixedly connected with the bottom of the convex groove 59 is arranged at the bottom of the convex block 60.

The telescopic rod 51 comprises a plurality of concave plates 62 which are clamped with each other, a hook block 63 is arranged at one end of each concave plate 62, an accommodating groove 64 for accommodating the hook block 63 is arranged on the side surface of each concave plate 62, the hook block 63 can move along the length direction of the accommodating groove 64, and a plurality of the concave plates 62 are provided with communication grooves 65 which penetrate through the concave plates 62 simultaneously.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like made within the design concept of the present invention should be included in the scope of the present invention.

Claims (10)

1. A high-range and high-precision double-head scraper flowmeter comprises a shell (1), and is characterized in that: a first fixing block (2) is arranged above the shell (1), a cylinder (3) is integrally connected above the first fixing block (2), the cylinder (3) is provided with a sampling groove (4) which penetrates through the cylinder (3) along the axial lead of the cylinder (3) and is communicated with the inside of the shell (1), a second fixing block (5) is connected above the cylinder (3), a fixing cylinder (6) is fixedly connected below the second fixing block (5), the fixing cylinder (6) is connected with a first connecting rod (7), a second connecting rod (66) is clamped with the first connecting rod (7), a first rotating motor (8) is fixedly connected with the second connecting rod (66), an output shaft is arranged on the first rotating motor (8), the output shaft is connected with a first hemispherical plate (9), a second hemispherical plate (10) is fixedly connected with the first rotating motor (8), go out the axle and can drive first hemisphere board (9) and rotate until first hemisphere board (9) and second hemisphere board (10) orientation constitution spheroid towards second hemisphere board (10), the both sides an organic whole of the top of second fixed block (5) is connected with two riser (11), two same circular slot (12) are worn to be equipped with by riser (11), gag lever post (13) that are in circular slot (12) are worn to be equipped with by riser (11), cylinder (3) an organic whole is connected with limiting plate (14) that are in second fixed block (5) both sides, limiting plate (14) are provided with spacing groove (15) that are used for gag lever post (13) card to go into.

2. The high range and high accuracy dual head drag flow meter of claim 1, wherein: one side of the first connecting rod (7) is provided with a triangular groove (16), and the second connecting rod (66) is integrally connected with a triangular block (17) which can be clamped into the triangular groove (16).

3. The high range and high accuracy dual head drag flow meter of claim 1, wherein: the inner side wall of the cylinder (3) is provided with a placing groove (18) communicated with the sampling groove (4), a first pushing cylinder (19) is arranged in the placing groove (18), and the first pushing cylinder (19) is connected with a pushing block (20).

4. The high accuracy metallic blade flowmeter of claim 1, wherein: the side of cylinder (3) is provided with sampling tube (21), the middle part of sampling tube (21) is provided with runs through groove (22) that runs through sampling tube (21).

5. The high range and high accuracy dual head drag flow meter of claim 4, wherein: the sampling tube (21) is provided with a lifting block (23) at an opening of the through groove (22), the lifting block (23) is in threaded connection with the sampling tube (21), and a first rotating rod (24) is arranged below the lifting block (23).

6. The high range and high accuracy dual head drag flow meter of claim 1, wherein: the top of riser (11) is provided with extrusion groove (25), the area of the opening of extrusion groove (25) to the tank bottom of extrusion groove (25) constantly reduces, the inside wall of extrusion groove (25) is provided with a plurality of sharp teeth (26) that are used for increasing frictional force, extrusion groove (25) and circular slot (12) intercommunication.

7. The high range and high accuracy dual head drag flow meter of claim 1, wherein: the inside wall of cylinder (3) is provided with location cylinder (27), location cylinder (27) are connected with first locating piece (28), first locating piece (28) set up to the arcuation, location cylinder (27) that first locating piece (28) are located are towards one side of first hemisphere board (9).

8. The high range and high accuracy dual head drag flow meter of claim 5, wherein: one side of elevator (23) orientation first rotary rod (24) is provided with recess (29), the both sides of recess (29) are provided with first spring (30), the other end fixedly connected with fixture block (31) of first spring (30), the one end of first rotary rod (24) orientation elevator (23) is provided with draw-in groove (32) that are used for fixture block (31) card to go into.

9. The high range and high accuracy dual head drag flow meter of claim 1, wherein: the middle part of casing (1) is provided with rotor plate (33), the middle part of rotor plate (33) is provided with dwang (34), the side of rotor plate (33) is connected with a plurality of cooperation boards (35), first gear (36) has been cup jointed at the top of dwang (34), first gear (36) meshing has second gear (37), the axial lead department of second gear (37) is provided with third connecting rod (38), third connecting rod (38) are connected with third gear (39), third gear (39) meshing has fourth gear (40), the top of fourth gear (40) is provided with third fixed block (41), one side that third fixed block (41) deviates from fourth gear (40) is provided with detects round point (42), the top of fourth gear (40) is provided with pulse signaling ware (43), the top of casing (1) is provided with counter (44) that are used for receiving pulse signaling ware (43), a filter pipe (45) is arranged on one side of the shell (1), a first filter screen (46) is arranged in the filter pipe (45), a first distance sensor (47) and a second distance sensor (48) which are positioned on two sides of the fourth gear (40) are arranged in the shell (1), a second positioning block (49) is fixedly connected to the middle of the first filter screen (46), a second pushing cylinder (50) is arranged in the middle of the second positioning block (49), the second pushing cylinder (50) is connected with a telescopic rod (51), a second rotating motor (52) connected with the second pushing cylinder (50) is arranged in the second positioning block (49), a hollow groove (53) is arranged in the pipe wall of the filter pipe (45), a fixing rod (54) is arranged in the hollow groove (53), and the fixing rod (54) is sleeved with a second rotating rod (55) which can rotate around the axial lead of the fixing rod (54), second rotary rod (55) and telescopic link (51) set up perpendicularly, second filter screen (56) that the part is in filter tube (45) are placed to the one end of second rotary rod (55), be provided with first cylinder (57) in second locating piece (49), first cylinder (57) are connected with movable rod (58), the side of movable rod (58) is provided with convex groove (59), be provided with protruding type piece (60) of being located convex groove (59) all the time in convex groove (59), the bottom of protruding type piece (60) is provided with second spring (61) with the tank bottom fixed connection in convex groove (59).

10. The high range and high accuracy dual head drag flow meter of claim 9, wherein: the telescopic rod (51) comprises a plurality of concave plates (62) which are clamped with each other, a hook block (63) is arranged at one end of each concave plate (62), an accommodating groove (64) used for accommodating the hook block (63) is formed in the side face of each concave plate (62), the hook block (63) can move along the length direction of the accommodating groove (64), and the concave plates (62) are provided with communicating grooves (65) which penetrate through the concave plates (62) simultaneously.

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