CN211926979U

CN211926979U - Metal scraper flowmeter with high range ratio

Info

Publication number: CN211926979U
Application number: CN202020997052.1U
Authority: CN
Inventors: 张伟; 王涛; 陈绍华; 李江波
Original assignee: Zhejiang Zhongya Meter Co ltd
Current assignee: Zhejiang Zhongya Meter Co ltd
Priority date: 2020-06-03
Filing date: 2020-06-03
Publication date: 2020-11-13
Anticipated expiration: 2030-06-03

Abstract

The utility model relates to a metal scraper flowmeter with high range ratio, which comprises a shell, wherein the middle part of the shell is provided with a rotating plate, a rotating rod is arranged in the middle of the rotating plate, a plurality of matching plates are connected with the side surface of the rotating plate, a first gear is sleeved on the top of the rotating rod, the first gear is meshed with a second gear, a connecting rod is arranged at the axis of the second gear, the connecting rod is connected with a third gear, the third gear is engaged with a fourth gear, a fixed block is arranged above the fourth gear, a detection dot is arranged on one side of the fixed block, which is far away from the fourth gear, a pulse transmitter is arranged above the fourth gear, the pulse signal generator is characterized in that a counter used for receiving the pulse signal generator is arranged above the shell, a filter pipe is arranged on one side of the shell, and a first filter screen is arranged in the filter pipe. The utility model has the advantages of range high ratio just possesses filtering capability.

Description

Metal scraper flowmeter with high range ratio

Technical Field

The utility model relates to a flowmeter technical field, concretely relates to metal scraper blade flowmeter that high range is compared.

Background

Range ratios in current flow meters refer to the ratio between the minimum measurable flow and the maximum measurable flow, which currently has 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.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, the utility model aims to provide a metal scraper blade flowmeter of high range ratio, its advantage that has the range ratio and possess filtering capability.

In order to achieve the above purpose, the utility model provides a following technical scheme: the utility model provides a metal scraper flowmeter of high range ratio, includes the casing, the middle part of casing is provided with the rotor plate, the middle part of rotor plate is provided with the dwang, the side of rotor plate is connected with a plurality of cooperation boards, first gear has been cup jointed at the top of dwang, first gear engagement has the second gear, the axial lead department of second gear is provided with the connecting rod, the connecting rod is connected with the third gear, third gear engagement has the fourth gear, the top of fourth gear is provided with the fixed block, one side that the fixed block deviates from the fourth gear is provided with the detection dot, the top of fourth gear is provided with the pulse signaling device, the top of casing is provided with the counter that is used for receiving the pulse signaling device, one side of casing is provided with the filter tube, be provided with first filter screen in the filter tube.

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, after liquid flows into the 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 connecting rod and rotate around the axial lead of self, the rotation of connecting rod drives the rotation of third gear and then drives the fourth gear, the rotation of fourth gear will drive the fixed block and rotate and then drive the axial lead that detects the dot and rotate round the fourth gear, after detecting the rotatory round of dot, thereby pulse signaling apparatus will receive signal and form the pulse, thereby the counter can receive the pulse and will detect dot pivoted number of times demonstration on the screen of counter. The utility model discloses utilize the rotation of gear to come measuring flow, have the advantage of range ratio high.

The utility model discloses further set up to: and a first distance sensor and a second distance sensor which are positioned on two sides of the fourth gear are arranged in the shell.

Through adopting above-mentioned technical scheme, it can be detected only to detect the dot after the rotatory a week of fourth gear, when the gear is rotatory not to the round, just can not detect corresponding rotation amplitude, therefore the degree of accuracy is lower, add and establish first distance sensor and second distance sensor and be in the both sides of fourth gear, after detecting the dot removal, first distance sensor and second distance sensor all will be able to detect the distance that detects the dot removal, thereby calculate and detect dot pivoted angle on the fixed block, improve measuring accuracy.

The utility model discloses further set up to: the middle part fixedly connected with locating piece of first filter screen, the middle part of locating piece is provided with the push cylinder, the push cylinder is connected with the telescopic link, the inside of locating piece is provided with the rotation motor of being connected with the push cylinder, be provided with the dead slot in the pipe wall of filter tube, be provided with the dead lever in the dead slot, the dead lever has cup jointed the axial lead pivoted rotary rod that can wind the dead lever, the rotary rod sets up with the telescopic link is perpendicular, the one end of rotary rod has been placed the part and has been in the second filter screen in the filter tube.

Through adopting above-mentioned technical scheme, it moves along the axial lead of self to promote the cylinder drive telescopic link, after the telescopic link removed to rotary rod department, it drives to push away the cylinder rotation and then drives the telescopic link and rotate to rotate the motor, the telescopic link will extrude the rotary rod and then let the rotary rod rotate round the axial lead of dead lever after rotating, the rotary rod rotates the back, the second filter screen that is located the rotary rod top falls to one side of first filter screen because of the supporting role that no longer receives the rotary rod, thereby strengthen the filtering action of filter tube.

The utility model discloses further set up to: the positioning block is internally provided with a first air cylinder, the first air cylinder is connected with a movable rod, a convex groove is formed in the side face of the movable rod, a convex block which is always positioned in the convex groove is arranged in the convex groove, and a spring fixedly connected with the bottom of the convex groove is arranged at the bottom of the convex block.

Through adopting above-mentioned technical scheme, the telescopic link is in the outside back of locating piece, and protruding type piece receives the effort of spring and can remove towards the direction that deviates from the tank bottom of protruding 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 protruding type piece and protruding type groove lets protruding type piece can only be in on the lateral wall of telescopic link in addition, avoids both to separate.

The utility model discloses further set up 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 promotes the cylinder passes the intercommunication groove and pushes up on the inside wall of concavity board, along with the removal of piston, the concavity board that is in the farthest 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 concavity board that is in the farthest will drive adjacent concavity board and remove the removal that realizes a plurality of concavity boards and then realize the flexible of telescopic link. The plurality of concave plates can form a shell and play a role in protection.

To sum up, the utility model discloses following beneficial effect has:

liquid flows in the filter tube after, 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 connecting rod and rotate around the axial lead of self, the rotation of connecting rod drives the rotation of third gear and then drives the fourth gear, the rotation of fourth gear will drive the fixed block and rotate and then drive the axial lead that detects the dot round fourth gear and rotate, after detecting the rotatory round of dot, thereby pulse signaling ware will receive signal and form the pulse, thereby the counter can receive the pulse and will detect dot pivoted number of times demonstration on the screen of counter. The utility model discloses utilize the rotation of gear to come measuring flow, have the advantage of range ratio high.

Drawings

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

FIG. 2 is a sectional view of the embodiment;

FIG. 3 is an enlarged view of a portion of area A of FIG. 2;

fig. 4 is a partially enlarged view of the region B in fig. 2.

Reference numerals: 1. a housing; 2. a rotating plate; 3. rotating the rod; 4. a mating plate; 5. a first gear; 6. a second gear; 7. a connecting rod; 8. a third gear; 9. a fourth gear; 10. a fixed block; 11. detecting dots; 12. a pulse transmitter; 13. a counter; 14. a filter tube; 15. a first filter screen; 16. a first distance sensor; 17. a second distance sensor; 18. positioning blocks; 19. a push cylinder; 20. a telescopic rod; 21. rotating the motor; 22. an empty groove; 23. fixing the rod; 24. rotating the rod; 25. a second filter screen; 26. a convex groove; 27. a convex block; 28. a spring; 29. a concave plate; 30. hooking the block; 31. accommodating grooves; 32. a communicating groove; 33. a first cylinder; 34. a movable rod.

Detailed Description

The present invention will be further explained with reference to the accompanying drawings.

The utility model provides a metal scraper blade flowmeter of high range ratio, as shown in fig. 1-4, includes casing 1, the middle part of casing 1 is provided with rotor plate 2, the middle part of rotor plate 2 is provided with dwang 3, the side of rotor plate 2 is connected with a plurality of cooperation boards 4, first gear 5 has been cup jointed at the top of dwang 3, first gear 5 meshes has second gear 6, the axial lead department of second gear 6 is provided with connecting rod 7, connecting rod 7 is connected with third gear 8, third gear 8 meshes has fourth gear 9, the top of fourth gear 9 is provided with fixed block 10, one side that fixed block 10 deviates from fourth gear 9 is provided with detects dot 11, the top of fourth gear 9 is provided with impulse signaling device 12, the top of casing 1 is provided with counter 13 that is used for receiving impulse signaling device 12, one side of the shell 1 is provided with a filter pipe 14, and a first filter screen 15 is arranged in the filter pipe 14.

A first distance sensor 16 and a second distance sensor 17 are arranged in the housing 1 on both sides of the fourth gear 9.

The middle part fixedly connected with locating piece 18 of first filter screen 15, the middle part of locating piece 18 is provided with promotes cylinder 19, it is connected with telescopic link 20 to promote cylinder 19, the inside of locating piece 18 is provided with the rotation motor 21 of being connected with promoting cylinder 19, be provided with dead slot 22 in the pipe wall of filter tube 14, be provided with dead lever 23 in the dead slot 22, dead lever 23 has cup jointed the axial lead pivoted rotary rod 24 that can wind dead lever 23, rotary rod 24 sets up with telescopic link 20 is perpendicular, the second filter screen 25 that the part is in filter tube 14 has been placed to the one end of rotary rod 24.

Be provided with first cylinder 33 in the locating piece 18, first cylinder 33 is connected with movable rod 34, the side of movable rod 34 is provided with convex type groove 26, be provided with the protruding type piece 27 that is in convex type groove 26 all the time in convex type groove 26, the bottom of protruding type piece 27 is provided with the spring 28 with the tank bottom fixed connection of convex type groove 26.

The telescopic rod 20 comprises a plurality of concave plates 29 which are clamped with each other, a hook block 30 is arranged at one end of each concave plate 29, an accommodating groove 31 for accommodating the hook block 30 is arranged on the side surface of each concave plate 29, the hook block 30 can move along the length direction of the accommodating groove 31, and a plurality of the concave plates 29 are provided with communication grooves 32 which penetrate through the concave plates 29 simultaneously.

The above description is only the preferred embodiment of the present invention, and is not intended to limit the present invention, any modification, equivalent replacement, or improvement made within the design concept of the present invention should be included within the protection scope of the present invention.

Claims

1. A high range ratio metallic blade flowmeter comprising a housing (1), characterized by: the middle part of casing (1) is provided with rotor plate (2), the middle part of rotor plate (2) is provided with dwang (3), the side of rotor plate (2) is connected with a plurality of cooperation boards (4), first gear (5) have been cup jointed at the top of dwang (3), first gear (5) meshing has second gear (6), the axial lead department of second gear (6) is provided with connecting rod (7), connecting rod (7) are connected with third gear (8), third gear (8) meshing has fourth gear (9), the top of fourth gear (9) is provided with fixed block (10), one side that fixed block (10) deviates from fourth gear (9) is provided with detection dot (11), the top of fourth gear (9) is provided with pulse signaling ware (12), the top of casing (1) is provided with counter (13) that are used for receiving pulse signaling ware (12), one side of the shell (1) is provided with a filter pipe (14), and a first filter screen (15) is arranged in the filter pipe (14).

2. The high range ratio metallic blade flow meter of claim 1, wherein: a first distance sensor (16) and a second distance sensor (17) which are positioned on two sides of the fourth gear (9) are arranged in the shell (1).

3. The high range ratio metallic blade flow meter of claim 1, wherein: the middle part fixedly connected with locating piece (18) of first filter screen (15), the middle part of locating piece (18) is provided with promotes cylinder (19), it is connected with telescopic link (20) to promote cylinder (19), the inside of locating piece (18) is provided with rotates motor (21) of being connected with promoting cylinder (19), be provided with dead slot (22) in the pipe wall of filter tube (14), be provided with dead lever (23) in dead slot (22), dead lever (23) have cup jointed axial lead pivoted rotary rod (24) that can wind dead lever (23), rotary rod (24) set up with telescopic link (20) are perpendicular, second filter screen (25) that the part is in filter tube (14) have been placed to the one end of rotary rod (24).

4. The high span ratio metallic flowmeter of claim 3, wherein: be provided with first cylinder (33) in locating piece (18), first cylinder (33) are connected with movable rod (34), the side of movable rod (34) is provided with convex type groove (26), be provided with protruding type piece (27) that are in convex type groove (26) all the time in convex type groove (26), the bottom of protruding type piece (27) is provided with spring (28) with the tank bottom fixed connection in convex type groove (26).

5. The high span ratio metallic flowmeter of claim 3, wherein: the telescopic rod (20) comprises a plurality of concave plates (29) which are clamped with each other, a hook block (30) is arranged at one end of each concave plate (29), an accommodating groove (31) used for accommodating the hook block (30) is formed in the side face of each concave plate (29), the hook block (30) can move along the length direction of the accommodating groove (31), and the concave plates (29) are provided with communicating grooves (32) which penetrate through the concave plates (29) simultaneously.