CN110440863B

CN110440863B - Roots flowmeter

Info

Publication number: CN110440863B
Application number: CN201910804299.9A
Authority: CN
Inventors: 赵孔
Original assignee: Anhui Zhongyuan Instrument Co ltd
Current assignee: Anhui Zhongyuan Instrument Co ltd
Priority date: 2019-08-28
Filing date: 2019-08-28
Publication date: 2020-10-16
Anticipated expiration: 2039-08-28
Also published as: CN110440863A

Abstract

The invention discloses a waist wheel flowmeter which comprises a protective shell, wherein a stretching plate is embedded on the outer surface of the front end of the protective shell, a bottom cover is fixedly arranged on the outer surface of the bottom end of the protective shell through a bolt, a first butt joint seat is welded on the edge of the outer surface of the top end of the protective shell, and a top cover is movably arranged on the outer surface of the top end of the protective shell. According to the waist wheel flowmeter, the stretching plate is arranged at the front end of the protective shell, the water through groove is formed in the position, close to the stretching plate, of the protective shell, the medium flowing through the waist wheel flowmeter can be sampled, the medium can be detected conveniently, functions of the waist wheel flowmeter are more diversified, the self-locking motor is arranged at the bottom end of the first butt joint seat, and the fixing screw opposite to the self-locking motor is arranged at the top end of the second butt joint seat, so that the repair difficulty of the waist wheel flowmeter can be reduced, non-workers can be prevented from being detached randomly, and the safety of the device is improved.

Description

Roots flowmeter

Technical Field

The invention relates to the field of flowmeters, in particular to a waist wheel flowmeter.

Background

The waist wheel flowmeter, also called as a Roots flowmeter, measures the total volume of gas or liquid flowing through a cylindrical chamber by the rotation times of a pair of waist wheels, but with the development of science and technology, the requirements of people on the waist wheel flowmeter are higher and higher, so that the waist wheel flowmeter cannot meet the use requirements of people;

the existing waist wheel flowmeter has certain disadvantages when in use, firstly, when devices in the waist wheel flowmeter are damaged, parts in the device can be repaired and replaced only after a tool is used for detaching a device shell, so that the repair convenience of the device is influenced, secondly, the waist wheel flowmeter is connected with a pipeline, the mounting position is complicated and complicated, the position is narrow, the disassembly convenience of the waist wheel flowmeter is influenced, the safety is poor, and non-working personnel can also disassemble the waist wheel flowmeter due to the fact that the device can be disassembled by the tool, so that the use safety of the waist wheel flowmeter is influenced; secondly, because the pipelines are tightly connected, sampling can not be carried out in the medium transportation process, so that sampling detection can only be carried out at the starting point and the end point of the pipeline, but sampling can not be carried out in the transportation process, and the condition of the medium in the pipeline is difficult to know in time, so that the waist wheel flowmeter is provided.

Disclosure of Invention

The invention mainly aims to provide a waist wheel flowmeter which can effectively solve the problems in the background technology.

In order to achieve the purpose, the invention adopts the technical scheme that:

a waist wheel flowmeter comprises a protective shell, a stretching plate is embedded on the outer surface of the front end of the protective shell, a bottom cover is fixedly arranged on the outer surface of the bottom end of the protective shell through bolts, a first butt joint seat is welded on the edge position of the outer surface of the top end of the protective shell, a top cover is movably arranged on the outer surface of the top end of the protective shell, a second butt joint seat is welded at the edge position of the outer surface of the bottom end of the top cover, motor cylinders are welded at the positions, close to four corners, of the outer surface of the bottom end of the first butt joint seat, a water passing groove is formed in the protective shell, close to the stretching plate, a sliding groove is arranged in the protective shell at a position close to the water passing groove, a guide pipe is welded at a position of the stretching plate close to the sliding groove, and the bottom outer surface of the stretching plate is provided with a retracting groove, the inner surface of the retracting groove is provided with a sampling tube, and a conduction tube is connected between the sampling tube and the guide tube.

Preferably, No. two top surfaces of butt joint seat are close to the four corners position and have all seted up the bolt groove, and set screw has been placed to the internal surface in bolt groove, there is the auto-lock motor inside of motor section of thick bamboo through bolt fixed mounting, and the top skin weld of auto-lock motor has a nut section of thick bamboo, the spread groove has been seted up to the top surface of a nut section of thick bamboo, and the internal surface of spread groove passes through interior external screw thread connection with set screw's surface.

Preferably, the outer surface of the front end of the protective shell is provided with a display screen and a switch button, and the switch button is positioned below the display screen.

Preferably, the top of set screw is equipped with the bolt cap, and the bottom surface of bolt cap all welds the reference column in the both sides position that is located set screw respectively, and the constant head tank has all been seted up to the interior bottom surface in bolt groove near both sides position.

Preferably, the both sides surface of protective housing is equipped with inlet tube and outlet pipe respectively, and the surface of inlet tube and outlet pipe all is equipped with the external screw thread, and the inlet tube internal surface has flow velocity sensor through bolt fixed mounting.

Preferably, the inside of protective housing is located and has seted up the reservation groove between inlet tube and the outlet pipe, and the internal surface movable mounting in reservation groove has a lumbar gear and No. two lumbar gears, and the shape of a lumbar gear and No. two lumbar gears is oval.

Preferably, the outer surface of the front end of the stretching plate is welded with a baffle, the outer surface of the front end of the baffle is welded with a sealing plate, and the outer surface of the sealing plate is bonded with a rubber pad.

Preferably, there is a lithium battery on the top outer surface of the protective shell through bolt fixing, and the self-locking motor and the input end of the flow rate sensor are electrically connected with the output end of the lithium battery through a wire.

Compared with the prior art, the invention has the following beneficial effects:

1. the flow velocity sensor is arranged on the inner surface of the water inlet pipe, so that the flow velocity of a medium can be detected when the waist wheel flowmeter is used, and whether the waist wheel flowmeter is damaged or not can be detected when the waist wheel flowmeter is not rotated, and timely repair and replacement are convenient to carry out;

2. the front end of the protective shell is provided with the stretching plate, and the position of the protective shell, which is close to the stretching plate, is provided with the water through groove, so that the guide tube is communicated with the water through groove by pulling the stretching plate outwards during sampling, a medium flowing through the waist wheel flowmeter can be sampled, the medium can be conveniently detected, and the detection difficulty of the medium is reduced;

3. through the bottom auto-lock motor at a butt joint seat to set up the set screw relative with the auto-lock motor on the top of No. two butt joint seats, can get the top cap automatically and put, conveniently repair and change the inside part of protective housing, reduce the repair degree of difficulty, simultaneously, because the auto-lock motor is installed inside protective housing, can avoid non-staff to dismantle at will, improve the security that the device used.

Drawings

FIG. 1 is a schematic view of the overall construction of a Roots flowmeter of the present invention;

FIG. 2 is a block diagram of the separation between the top cover, protective housing and bottom cover of a Roots flowmeter of the present invention;

FIG. 3 is a partial cross-sectional view of the protective housing of a Roots flowmeter of the present invention without sampling;

FIG. 4 is a partial cross-sectional view of a protective housing of a Roots flowmeter of the present invention during sampling;

FIG. 5 is a block diagram of a tension plate in a Roots flowmeter of the present invention;

FIG. 6 is a partial cross-sectional view of a first docking cradle and a second idler of a Roots flowmeter of the present invention;

fig. 7 is a structural diagram of a set screw and a self-locking motor in a Roots flowmeter according to the invention.

In the figure: 1. a protective housing; 2. stretching the plate; 3. a water inlet pipe; 4. a water outlet pipe; 5. a bottom cover; 6. a first butt joint seat; 7. a top cover; 8. a second docking station; 9. a motor barrel; 10. a first waist wheel; 11. a second waist wheel; 12. a water trough; 13. a guide tube; 14. a sampling tube; 15. a baffle plate; 16. a set screw; 17. a nut barrel; 18. a self-locking motor; 19. and a positioning column.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.

Example 1

Referring to fig. 1-5, a waist-wheel flowmeter comprises a protective casing 1, a tension plate 2 is inlaid on the outer surface of the front end of the protective casing 1, a bottom cover 5 is fixedly installed on the outer surface of the bottom end of the protective casing 1 through bolts, a first butt-joint seat 6 is welded on the edge position of the outer surface of the top end of the protective casing 1, a top cover 7 is movably installed on the outer surface of the top end of the protective casing 1, a second butt-joint seat 8 is welded on the edge position of the outer surface of the bottom end of the top cover 7, motor cylinders 9 are welded on the outer surface of the bottom end of the first butt-joint seat 6 close to four corners, a water through groove 12 is arranged in the protective casing 1 close to the tension plate 2, a sliding groove is arranged in the protective casing 1 close to the water through groove 12, a guide pipe 13 is welded on the tension plate 2 close to the sliding groove, and a conduction pipe is connected between the sampling pipe 14 and the guide pipe 13.

Referring to fig. 6-7, bolt grooves are formed in positions, close to four corners, of the outer surface of the top end of the second butt joint seat 8, fixing screws 16 are placed on the inner surface of each bolt groove, a self-locking motor 18 is fixedly mounted inside the motor cylinder 9 through bolts, a nut cylinder 17 is welded on the outer surface of the top end of the self-locking motor 18, a connecting groove is formed in the outer surface of the top end of the nut cylinder 17, and the inner surface of the connecting groove is connected with the outer surface of each fixing screw 16 through internal and external threads.

Referring to fig. 1, a display screen and a switch button are arranged on the outer surface of the front end of a protective shell 1, and the switch button is located below the display screen.

Referring to fig. 6-7, a bolt cap is disposed at the top end of the fixing screw 16, positioning posts 19 are welded to the outer surface of the bottom end of the bolt cap and located at two sides of the fixing screw 16, respectively, and positioning slots are formed in the inner bottom surface of the bolt slot and located at positions close to the two sides.

Referring to fig. 1, the outer surfaces of two sides of the protective casing 1 are respectively provided with a water inlet pipe 3 and a water outlet pipe 4, the outer surfaces of the water inlet pipe 3 and the water outlet pipe 4 are respectively provided with an external thread, and the inner surface of the water inlet pipe 3 is fixedly provided with a flow velocity sensor through a bolt.

Referring to fig. 2, a preformed groove is formed in the protective shell 1 between the water inlet pipe 3 and the water outlet pipe 4, a first lumbar wheel 10 and a second lumbar wheel 11 are movably mounted on the inner surface of the preformed groove, and the first lumbar wheel 10 and the second lumbar wheel 11 are oval in shape.

Referring to fig. 5, a baffle plate 15 is welded to the outer surface of the front end of the tension plate 2, a sealing plate is welded to the outer surface of the front end of the baffle plate 15, and a rubber pad is bonded to the outer surface of the sealing plate.

Referring to fig. 6, the top outer surface of the protective casing 1 is fixedly provided with a lithium battery through a bolt, and the self-locking motor 18 and the input end of the flow rate sensor are both electrically connected with the output end of the lithium battery through a wire.

During the use, install the roots flowmeter in the pipeline earlier, inlet tube 3 is connected with the delivery port of pipeline, is connected outlet pipe 4 and medium supply pipeline, and the back is accomplished in the installation, and when the medium in the pipeline flowed into protective housing 1 from inlet tube 3, promote a roots wheel 10 and No. two roots wheel 11, and a roots wheel 10 and No. two roots wheel 11 are rotatory, because a roots wheel 10 and No. two roots wheel 11 intermeshing, later through calculating the number of revolutions circle of a roots wheel 10 and No. two roots wheel 11, alright detect the volume that the medium flowed through.

Example 2

When the waist wheel flowmeter is used, a medium flows into the protective shell 1 through the water inlet pipe 3, and the flow velocity of the medium is detected by the flow velocity sensor on the inner surface of the water inlet pipe 3 during flowing.

When needs detect the waist wheel flowmeter and whether damage, block up through the pipeline with being connected with inlet tube 3, later observe whether velocity of flow sensor has the number of degrees yet, if have, explain appear the gap between No. one waist wheel 10 and No. two waist wheels 11, consequently can detect out whether damage takes place for the waist wheel flowmeter, conveniently carry out timely repair and change.

Example 3

When needs sample, the manual tensile board 2 that will draw outwards, because the rear end of tensile board 2 is connected with guide tube 13, consequently at the in-process that tensile board 2 removed, guide tube 13 moves together, when guide tube 13 moved to being parallel with water service tank 12, manual pull out sampling tube 14, the medium enters into water service tank 12 through the reserve tank, flow into guide tube 13 by water service tank 12 again, because through the conduction union coupling between guide tube 13 and the sampling tube 14, consequently guide tube 13 flows into in sampling tube 14 through the conduction tube, flow out by sampling tube 14, later the user through sampling tube 14 collect can, consequently through setting up tensile board 2, can sample the medium that flows through the roots flowmeter, conveniently detect the medium, reduce the detection degree of difficulty of medium.

Example 4

When a circuit or a component in the waist-wheel flowmeter needs to be repaired, the self-locking motor 18 in the motor cylinder 9 is controlled to rotate by pressing down a switch button at the front end of the protective shell 1, the nut cylinder 17 at the top end of the self-locking motor 18 is driven to rotate together when the self-locking motor 18 rotates, the fixing screw 16 is pushed out, then the top cover 7 is manually taken down, a device and a circuit at the top end of the protective shell 1 are pressed down and displayed in front of a maintenance worker, timely repair and replacement are convenient to carry out, meanwhile, the repair difficulty can be greatly reduced, after repair is finished, the second butt joint seat 8 at the bottom end of the top cover 7 is correspondingly attached to the first butt joint seat 6 at the top end of the protective shell 1, then the fixing screw 16 is inserted into a bolt groove, the switch button is pressed down, the self-locking motor 18 is controlled to drive the nut cylinder 17 to rotate, and a connecting groove at the top end of the, carry out the rolling to set screw 16, manual control corresponds bolt cap bottom reference column 19 with the constant head tank simultaneously, afterwards, set screw 16 inserts in the spread groove, reference column 19 inserts in the constant head tank, accomplish fixedly, self-locking motor 18 stops rotatoryly, through the inside and outside screw-thread fit of spread groove and set screw 16 surface, make set screw 16 pull outward to the improper, can only rotate, again because the reference column 19 of bolt cap both sides inserts in the constant head tank, can prescribe a limit to set screw 16, avoid set screw 16 to take place to rotate, consequently can be better fix, secondly, because self-locking motor 18 installs inside protective housing 1, can't dismantle from the outside, consequently can avoid non-working personnel to dismantle at will, the security that the improvement device used.

The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. A waist wheel flowmeter, including protective housing (1), its characterized in that: the front end outer surface of the protective shell (1) is inlaid with a stretching plate (2), a bottom cover (5) is fixedly mounted on the bottom end outer surface of the protective shell (1) through bolts, a first butt joint seat (6) is welded at the edge position of the top end outer surface of the protective shell (1), a top cover (7) is movably mounted at the top end outer surface of the protective shell (1), a second butt joint seat (8) is welded at the edge position of the bottom end outer surface of the top cover (7), a motor cylinder (9) is welded at the position, close to four corners, of the bottom end outer surface of the first butt joint seat (6), a water through groove (12) is formed in the protective shell (1) close to the stretching plate (2), a sliding groove is formed in the protective shell (1) close to the position of the water through groove (12), and a guide pipe (13) is welded at the position, a retractable groove is formed in the outer surface of the bottom end of the stretching plate (2), a sampling tube (14) is placed on the inner surface of the retractable groove, and a conduction tube is connected between the sampling tube (14) and the guide tube (13);

the outer surface of the top end of the second butt joint seat (8) close to four corners is provided with bolt grooves, fixing screws (16) are placed on the inner surface of each bolt groove, a self-locking motor (18) is fixedly mounted inside the motor cylinder (9) through bolts, the outer surface of the top end of the self-locking motor (18) is welded with a nut cylinder (17), the outer surface of the top end of the nut cylinder (17) is provided with a connecting groove, and the inner surface of the connecting groove is connected with the outer surface of each fixing screw (16) through internal and external threads;

the both sides surface of protective housing (1) is equipped with inlet tube (3) and outlet pipe (4) respectively, and the surface of inlet tube (3) and outlet pipe (4) all is equipped with the external screw thread, and inlet tube (3) internal surface has flow velocity sensor through bolt fixed mounting.

2. The roots meter of claim 1, wherein: the front end surface of protective housing (1) is equipped with display screen and shift knob, and shift knob is located the below of display screen.

3. The roots meter of claim 1, wherein: the top end of the fixing screw (16) is provided with a bolt cap, positioning columns (19) are welded on the outer surfaces of the bottom end of the bolt cap and are respectively located on two sides of the fixing screw (16), and positioning grooves are formed in positions, close to the two sides, of the inner bottom surface of the bolt groove.

4. The roots meter of claim 1, wherein: the inside of protective housing (1) is located and has seted up the reservation groove between inlet tube (3) and outlet pipe (4), and the internal surface movable mounting of reservation groove has a lumbar gear (10) and No. two lumbar gears (11), and the shape of a lumbar gear (10) and No. two lumbar gears (11) is oval.

5. The roots meter of claim 1, wherein: the outer surface of the front end of the stretching plate (2) is welded with a baffle (15), the outer surface of the front end of the baffle (15) is welded with a sealing plate, and a rubber pad is bonded to the outer surface of the sealing plate.

6. The roots meter of claim 1, wherein: the top surface of protective housing (1) has the lithium cell through bolt fixed mounting, auto-lock motor (18) all pass through the output electric connection of wire and lithium cell with flow rate sensor's input.