Novel gas roots flowmeter

Abstract

The utility model relates to a novel gas roots flowmeter. A flange at the end of a gas inlet pipe of the flowmeter is a male flange with a top tongue; the top tongue surrounds the through hole of the flange for a circle and protrudes horizontally; a female flange is used in combination with the male flange, a deep groove surrounding the through hole by a circle is formed in the end face of the female flange, the deep groove corresponds to the top tongue in position, and the length of the top tongue is not smaller than the depth of the deep groove. A sealing ring is embedded into the bottom of the deep groove, and the depth of the deep groove is larger than the thickness of the sealing ring. A circle of step is arranged around the through hole of the male flange, and an interception net is embedded in the step. The top tongues and the deep grooves are arranged on the flanges, and the sealing rings are deeply buried in the deep grooves, so that the distance between the two flanges can be reduced, sealing is guaranteed, meanwhile, the distance cannot allow mice and ants to climb in, and the mice and ants can be prevented from gnawing the sealing rings. And the convex tongue and the shallow groove are matched to form an s-shaped gap, so that the leakage-proof performance can be enhanced. The overall structure is simple, accessories are few, and mounting and dismounting steps are simplified.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of gas yoke flowmeter, especially a novel gas yoke flowmeter. BACKGROUND

[0002] The gas yoke flowmeter is usually connected on the pipeline through the flange, and the conventional flange connection is that the sealing ring is clamped between two flanges, similar to the sandwich structure, the two flanges clamp the sealing ring through the bolt, and a tight sealing structure is formed. However, since the sealing ring has a certain thickness, the sealing ring is exposed between the two flanges, so in the daily use process, the sealing ring is easily nibbled by mice and ants to be scrapped in advance, and the hidden danger of pipeline gas leakage is increased. For this purpose, the existing Chinese patent CN219977481U proposes a protective shell that covers the flange, which is composed of upper and lower protective shells, and the flange and the sealing ring are covered in the protective shell, so as to avoid nibbling by mice and ants and prolong the sealing life. However, the design of the protective shell makes the overall structure complex, and more accessories are used during use, which is not convenient for installation and maintenance, and therefore the present application is proposed. SUMMARY

[0003] The purpose of the present application is to provide a novel gas yoke flowmeter, which aims to solve the problems existing in the prior art.

[0004] The present application provides a novel gas yoke flowmeter, the flange at the end of the inlet pipe of the flowmeter is a male flange with a top tongue; the top tongue is wrapped around the through hole of the flange and protrudes horizontally; the female flange is used in combination with the male flange, a deep groove is arranged around the through hole on the end face of the female flange, the deep groove corresponds to the position of the top tongue, and the length of the top tongue is not less than the depth of the deep groove; a sealing ring is embedded in the bottom of the deep groove, and the depth of the deep groove is greater than the thickness of the sealing ring so that the sealing ring is located in the deep groove; a step is arranged around the through hole of the male flange, and an intercepting net is embedded in the step.

[0005] Further, the top tongue is located between the bolt hole and the through hole on the male flange, a shallow groove is arranged between the top tongue and the bolt hole, and the shallow groove is adjacent to the top tongue.

[0006] Further, a protruding tongue is arranged on the female flange corresponding to the position of the shallow groove, and the tongue is adjacent to the deep groove.

[0007] Further, a magnetic attraction block is arranged between the net frame of the intercepting net and the step, and the intercepting net is fixed on the step through magnetic attraction.

[0008] Further, the flange at the end of the outlet pipe of the flowmeter is a female flange or a male flange.

[0009] Further, the top tongues on the male flange are two, the two top tongues are concentrically distributed, the length of the top tongue close to the through hole is equal to, less than or greater than the length of the top tongue close to the bolt hole; the female flange is provided with two deep grooves corresponding to the top tongues, the depth of the deep groove close to the through hole is equal to, less than or greater than the depth of the deep groove close to the bolt hole; the two deep grooves are both provided with a sealing ring.

[0010] The utility model discloses the beneficial effect is: the utility model discloses the top tongue and deep groove are set up on the flange, make the sealing ring deep bury in the deep groove, thereby can reduce the interval of two flanges, guarantee the sealing, and the interval cannot accommodate the rat to crawl in, thereby can avoid the rat to gnaw the sealing ring. The s-shaped gap is formed with the convex tongue and shallow groove, and the leakproofness can be enhanced. The overall structure is simple, and the accessories are few, and the installation and dismounting steps are simplified. BRIEF DESCRIPTION OF DRAWINGS

[0011] Fig. 1 It is the whole structure schematic diagram of the utility model.

[0012] Fig. 2 It is the sectional structure schematic diagram of the utility model.

[0013] Fig. 3 It is the disassembled sectional structure schematic diagram of the utility model.

[0014] In the drawing:

[0015] 1, flow meter;2, inlet pipe;3, male flange;4, top tongue;5, female flange;6, deep groove;7, sealing ring;8, step;9, intercepting net;10, bolt hole;11, through hole;12, shallow groove;13, convex tongue. DETAILED DESCRIPTION

[0016] The technical scheme in the embodiments of the utility model will be described clearly and completely in combination with the drawings in the embodiments of the utility model, and obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor belong to the scope of protection of the utility model.

[0017] As Figs. 1-3 The utility model discloses a novel gas waist wheel flow meter, and the flow meter 1 usually includes inlet pipe 2 and outlet pipe, and gas enters the inside of the flow meter 1, is calculated flow after waist wheel rotation and leaves from the outlet pipe, so the flow meter 1 needs to be connected to the pipeline, and usually the connection of the flow meter 1 and the pipeline is realized through the flange.

[0018] In this embodiment, the flange at the end of the air inlet pipe 2 is a male flange 3 with a top tongue 4, which protrudes horizontally around the through hole 11 of the flange. The female flange 5 is used in combination with the male flange 3, and a deep groove 6 is provided on the end face of the female flange 5 around the through hole 11. The deep groove 6 corresponds to the position of the top tongue 4, so that when the female flange 5 and the male flange 3 are combined, the top tongue 4 is inserted into the deep groove 6, achieving deep overlap of the two flanges, and the distance between the two flanges can be further reduced. The bottom of the deep groove 6 is embedded with a sealing ring 7, and the depth of the deep groove 6 is greater than the thickness of the sealing ring 7, so that the sealing ring 7 is located in the deep groove 6. When the female flange 5 and the male flange 3 are combined, the female flange 5 and the male flange 3 are locked by bolts, and the top tongue 4 is tightly pressed on the sealing ring 7, so that a tight seal is formed between the female flange 5 and the male flange 3. In order to ensure the pressing effect of the top tongue 4, the length of the top tongue 4 is not less than the depth of the deep groove 6.

[0019] A step 8 is provided around the through hole 11 of the male flange 3, and an interception net 9 is embedded at the step 8. The interception net 9 is used to physically intercept impurities in the gas, so as to avoid the wear of the waist wheel caused by the impurities entering the flow meter 1. A magnetic block is provided between the net frame of the interception net 9 and the step 8, which can be installed in the net frame of the interception net 9 or in the step 8. The interception net 9 is fixed on the step 8 by magnetic attraction. In this way, the interception net 9 can be quickly installed and disassembled during installation, which is convenient for subsequent maintenance and repair.

[0020] The top tongue 4 is located between the bolt hole 10 and the through hole 11 of the male flange 3, and a shallow groove 12 is provided between the top tongue 4 and the bolt hole 10. The female flange 5 is provided with a protruding tongue 13 corresponding to the position of the shallow groove 12, and the tongue 13 is adjacent to the deep groove 6. When the female flange 5 and the male flange 3 are combined, the tongue 13 is inserted into the shallow groove 12, forming an S-shaped gap with the deep groove 6 and the top tongue 4. The gap is thin and long, which can prevent leakage.

[0021] The combination of the female flange 5 and the male flange 3 can protect the sealing ring 7 and enhance the anti-leakage effect, so it can also be applied to the outlet pipe end of the flow meter 1. The flange at the outlet pipe end of the flow meter 1 can be either a female flange 5 or a male flange 3.

[0022] In another embodiment, there are two top tongues 4 on the male flange 3, which are concentrically distributed. The length of the top tongue 4 near the through hole 11 is equal to, less than or greater than the length of the top tongue 4 near the bolt hole 10. Two deep grooves 6 are provided on the female flange 5 corresponding to the top tongues 4, and the depth of the deep groove 6 near the through hole 11 is equal to, less than or greater than the depth of the deep groove 6 near the bolt hole 10. A sealing ring 7 is installed in each of the two deep grooves 6. In this way, two layers of sealing rings 7 are provided, which can further enhance the sealing effect.

[0023] The utility model discloses a bolt only needs to be dismantled to separate female flange 5 with male flange 3, and then can replace and clean the inside intercepting net 9, and the aging sealing ring 7 can be taken out by the mode of sticking sealing ring 7 with glue stick.

[0024] It is obvious for those skilled in the art that the utility model is not limited to the details of the above-mentioned exemplary embodiments, and the utility model can be realized in other specific forms without departing from the spirit or basic characteristics of the utility model. Therefore, no matter from which point, the embodiments should be regarded as exemplary and non-restrictive.

Claims

1. A novel gas rotary piston flowmeter characterized by, The inlet pipe end flange of the flowmeter is a male flange with a top tongue; the top tongue is horizontally protruding around the through hole of the flange; the female flange is used in combination with the male flange, and a deep groove is arranged around the through hole on the end face of the female flange, the deep groove corresponds to the position of the top tongue, the length of the top tongue is not less than the depth of the deep groove; a sealing ring is embedded in the bottom of the deep groove, and the depth of the deep groove is greater than the thickness of the sealing ring so that the sealing ring is located in the deep groove; a step is arranged around the through hole of the male flange, and an intercepting net is embedded in the step.

2. The novel gas wafers wheel flowmeter according to claim 1, characterized in that, The top tongue is located between the bolt hole and the through hole of the male flange, and a shallow groove is arranged between the top tongue and the bolt hole.

3. The novel gas wafers wheel flowmeter according to claim 2, characterized in that, The female flange is provided with a protruding tongue corresponding to the position of the shallow groove, and the tongue is adjacent to the deep groove.

4. The novel gas wafers wheel flow meter according to claim 1, wherein, A magnetic block is arranged between the net frame and the step of the intercepting net, and the intercepting net is fixed on the step through magnetic attraction.

5. The novel gas wafers wheel flow meter according to claim 1, wherein, The outlet pipe end flange of the flowmeter is a female flange or a male flange.

6. The novel gas wafers wheel flow meter according to claim 1, wherein, The two top tongues on the male flange are concentrically distributed, the length of the top tongue close to the through hole is equal to, less than or greater than the length of the top tongue close to the bolt hole; the female flange is provided with two deep grooves corresponding to the top tongues, the depth of the deep groove close to the through hole is equal to, less than or greater than the depth of the deep groove close to the bolt hole; a sealing ring is installed in each of the two deep grooves.

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