CN105092144A - Barometer capable of measuring and releasing pressure - Google Patents

Abstract

The invention provides a barometer capable of measuring and releasing pressure, comprising a body, an air inlet set, an exhaust set, a pressure release set and an indicating gage. The air inlet set is arranged at one end of the body; the exhaust set and the pressure release set are respectively arranged at the opposite end of the body; the indicating gage is installed at the top end of the body, and forms an internal flow passage with a four-vent divided manifold in the body; the internal flow passage can be meanwhile in communication with the air inlet set, the exhaust set, the pressure release set and the indicating gage. Through the internal flow passage, the barometer can complete the pressurization inflation, pressure measurement, pressure release and secondary inflation of an inflatable product in order to change the inconvenience caused by frequent disassembly and assembly of inflation and deflation joints and the indicating gage in the prior art.

Description

Amount lets out dual-purpose rain glass

Technical field

The invention relates to a kind of rain glass, espespecially one is when aerated product carries out pneumatic compression, measures the air pressure in this product, and the air pressure in this product exceedes in limited time, and the amount of excess pressure of can simultaneously releasing lets out dual-purpose rain glass.

Background technology

Sports equipment common in daily life, as: ball or inflatable packer etc. or the vehicles, as: the tire etc. of bicycle or locomotive it is all the product air bag of its inside being had to the demand of carrying out pneumatic compression, and prior art is in the inflating pressure process of the said goods, first be the inflation inlet inflation of charger being held this product of UNICOM directly or indirectly, indirect UNICOM refers to installs air punch additional between charger and product, start charger switch by user more afterwards or piston reciprocating type start is imposed to inflate this series products to inflator, be fills up to a certain degree until interiors of products air pressure, removal inflates the inflation end of equipment, change the inflation inlet being installed up to this product with air pressure scale, thus learn whether air pressure enough uses or meet relevant safety standard, if the air pressure of interiors of products is suitably sufficient, the action of inflating of then pressurizeing can stop, if air pressure is not enough, then need to continue interiors of products filling air, or when interiors of products air pressure is too high when, then in the inflation inlet installing AB Air Bleed equipment of this product, or be directly located at the inflation inlet of product with ball cushion, make the air pressure of interiors of products by the equipment of releasing or the release of ball pin, to be reduced by the air pressure of interiors of products.

But, no matter at the inflating pressure of such aerated product, measure pressure, in the process of relieving pressure or again filling air pressure, charger or between pressure scale and product inflation inlet the operating frequency of UNICOM and dismounting too high and to perform flow process quite numerous and diverse, for user, overall operating process is quite inconvenient, and, in the inflation of product, measure, in the course of action of pressure release and again filling, the time spent seems quite a lot of, and above-mentioned action cannot be completed once to this aerated product, therefore, just inflation, in the operation of measurement and pressure release, prior art seems that efficiency is extremely low.

Summary of the invention

Goal of the invention of the present invention is to provide a kind of amount to let out dual-purpose rain glass, improving inflating pressure in prior art, measure pressure and release air pressure time, the inconvenience that dismounting is filled continually, lose heart joint and scale cause, implemented by technological means of the present invention, to promote the efficiency of aerated product when inflate, measure and internal pressure of releasing etc. operates.

For reaching above-mentioned goal of the invention, the technology used in the present invention means are measured for design is a kind of and are let out dual-purpose rain glass, and it comprises a body, an air inlet group, an exhaust banks, a pressure release group and a scale; This body one end is located in this air inlet assembling, and the other end that this body is relative is threeway tubulose, and one end of the threeway tubular tip of this body forms in this body, and in another two ends, group establishes this exhaust banks and this pressure release group respectively, and this scale is installed in the top of this body; Form the inner flow passage that has four port manifolds in this body, this inner flow passage UNICOM is in this air inlet group, this exhaust banks, this pressure release group and this scale.

Described amount lets out dual-purpose rain glass, and wherein this body has a filling seat, discharge seat, a scale seat and a multiple side channel; This filling seat protrudes out the one end being formed at this body, and this discharge seat is arranged at the other end of this body, and this scale seat is shaped in the first half of this body to lower recess, and the plurality of side channel depression forms in the both sides of this body Lower Half; This filling seat caves inward formation one air intake opening; This discharge seat has the exhausr port and a pressure relief opening that are vertical setting mutually, and this exhausr port to cave inward formation away from the end face of this body relatively in this discharge seat, and pressure relief opening depression forms in the side of this discharge seat; This scale seat protrudes out formation one ring portion in this body first half outer rim, and bottom this scale seat, the inner flow passage place depression shaping one of this body contiguous measures mouth.

Described amount lets out dual-purpose rain glass, and wherein this pressure release group comprises a top cover, a spring, an installing seat, a bearing, a push rod and multiple O-ring seal; The center of this installing seat is run through a duct, to be shaped a tank in a concave end of this installing seat, the tank of this installing seat communicates with the duct of this installing seat, this spring is arranged in this tank, in this installing seat stage casing outer rim, there is a groove, first described O-ring seal is sheathed on this groove, another tank of other end depression shaping of this installing seat, second described O-ring seal is arranged in this another tank, this bearing is a lid, have a through hole in these bearing central authorities, this bearing is sheathed on the other end of this installing seat; This push rod has a head and a bar portion, the bar portion of this push rod has a disappointing short slot, one end, bar portion of this push rod is arranged at the head of this push rod, the bar portion of this push rod wears the through hole of this bearing and the duct of this installing seat, head this bearing contiguous of this push rod, sheathed 3rd described O-ring seal between the head of this push rod and this bearing, the bar portion other end of this push rod runs through this spring and is mounted on this top cover; The installing seat of this pressure release group is mounted on the pressure relief opening of the discharge seat of this body.

Described amount lets out dual-purpose rain glass, and wherein this air inlet group has a connecting piece, a collar and a spheroid; It is cylindric that this connecting piece is a ladder, run through a duct in inside, this duct is stepped, and the external diameter of this connecting piece one end is greater than the external diameter of the other end, and the internal diameter of this connecting piece internal gutter one end is greater than the internal diameter of the other end, in the cell ends ovalize of this connecting piece internal diameter compared with small end; A duct is run through in this collar inside, and this collar one end external diameter is greater than other end external diameter, and this collar external diameter is mounted on the duct internal diameter smaller part of this connecting piece compared with small end, and the duct of this collar communicates in the duct of this connecting piece; The duct that this sphere diameter is less than this connecting piece compared with small end internal diameter but be greater than the aperture of duct compared with small end ovalize of this connecting piece, the duct that this spheroid is located in this connecting piece is comparatively in small end, and between the cell ends being limited to this connecting piece and this collar; The connecting piece of this air inlet group is mounted on the air intake opening of the filling seat of this body.

Described amount lets out dual-purpose rain glass, and wherein this exhaust banks has a fitting piece and a pad; The central authorities of this pad have a perforation, this pad one side is resisted against in the exhausr port of this discharge seat, this fitting piece has a through hole, and the end face of this fitting piece is resisted against this pad another side, and the through hole of this fitting piece communicates with the exhausr port of the perforation of this pad and this discharge seat; This set of engagement members is located at the exhausr port of this discharge seat.

Described amount lets out dual-purpose rain glass, and wherein this scale is installed in the scale seat of this body, is incorporated into the ring portion of scale seat by mounting cover.

Described amount lets out dual-purpose rain glass, and wherein the measurement mouth UNICOM of the air intake opening of this filling seat, the exhausr port of this discharge seat and pressure relief opening and this scale seat is in the inner flow passage of this body.

The invention has the advantages that throughput let out the design of dual-purpose barometric inner flow passage can complete once aerated product inflating pressure, measure pressure, release air pressure and the action of again inflating, to improve the prior art inconvenience that frequently dismounting is filled, lose heart joint and scale cause.

Accompanying drawing explanation

The following drawings is only intended to schematically illustrate the present invention and explain, not delimit the scope of the invention.Wherein,

Fig. 1 is stereo appearance figure of the present invention.

Fig. 2 is element exploded view of the present invention.

Fig. 3 is horizontal cross of the present invention.

Fig. 4 is longitudinal sectional view of the present invention.

Fig. 5 is pressure release action schematic diagram of the present invention.

Fig. 6 is the element exploded view of another embodiment of the present invention.

Fig. 7 is the transverse sectional view of another embodiment of the present invention.

Main element label declaration:

10 body 101 inner flow passages

11 fill seat 111 air intake opening

12 discharge seat 121 exhausr port

122 pressure relief opening 13 scale seats

131 measure mouth 14 side channel

15 lid 151 joint portions

16 hold cave 20 air inlet group

21 connecting piece 22 collars

23 spheroid 30 exhaust banks

31 fitting piece 32 pads

40 pressure release group 41 top covers

42 spring 43 installing seats

44 O-ring seal 45 O-ring seals

46 bearing 47 O-ring seals

48 push rods 481 lose heart short slot

50 scale 51 mounting covers

Embodiment

In order to there be understanding clearly to technical characteristic of the present invention, object and effect, now contrast accompanying drawing and the specific embodiment of the present invention is described.

Please refer to shown in Fig. 1, amount of the present invention is let out dual-purpose rain glass and is comprised body 10, air inlet group 20, exhaust banks 30, pressure release group 40 and a scale 50.

This air inlet group 20 is mounted on this body 10 one end, and the other end that this body 10 is relative is threeway tubulose, and its one end forms in this body 10, and in another two ends, group establishes this exhaust banks 30 and this pressure release group 40 respectively, and this scale 50 is installed in the top of this body 10.

Please refer to shown in Fig. 1 and Fig. 2, this body 10 has a filling seat 11, and discharges seat 12, scale seat 13 and multiple side channel 14, forms the inner flow passage 101 of a tool four port manifold in the inside of this body 10; This body 10 first half profile is a semisphere, the Lower Half of this body 10 is circular arc, this filling seat 11 protrudes out the one end being formed at this body 10, this discharge seat 12 is arranged at the other end of this body 10, this scale seat 13 is shaped in the first half of this body 10 to lower recess, described side channel 14 is by this filling seat 11 in the interval of this discharge seat 12, and the setting direction corresponding to this filling seat 11 and this discharge seat 12 is shaped in the both sides outer rim of this body 10 Lower Half towards sunken inside.

Please refer to shown in Fig. 2 and Fig. 3, this filling seat 11 caves inward formation one air intake opening 111, this discharge seat 12 has exhausr port 121 and the pressure relief opening 122 be vertical setting mutually, this exhausr port 121 relatively to cave inward formation away from the end face of this body 10 in this discharge seat 12, pressure relief opening 122 depression forms in the side of this discharge seat 12, this scale seat 13 protrudes out formation one ring portion in this body 10 first half outer rim, bottom this scale seat 13, the inner flow passage 101 place depression shaping one of this body 10 contiguous measures mouth 131, shown in Fig. 4; Measurement mouth 131 UNICOM of the exhausr port 121 of the air intake opening 111 of this filling seat 11, this discharge seat 12 and pressure relief opening 122 and this scale seat 13 is in the inner flow passage 101 of this body 10.

Please refer to shown in Fig. 2, this air inlet group 20 has connecting piece 21, collar 22 and a spheroid 23.

Please refer to shown in Fig. 3, the connecting piece 21 of this air inlet group 20 is cylindric in a ladder, a duct is run through in this connecting piece 21 inside, this duct is stepped, the external diameter of this connecting piece 21 one end is greater than the external diameter of the other end, and the internal diameter of this connecting piece 21 internal gutter one end is greater than the internal diameter of the other end, in the cell ends ovalize aperture of this connecting piece 21 internal diameter compared with small end; This collar 22 is for cylinder and a duct is run through in inside, and this collar 22 one end external diameter is comparatively large, and other end external diameter is less, and this collar 22 external diameter is mounted on the duct internal diameter smaller part of this connecting piece 21 compared with small end, and the duct of this collar 22 communicates in the duct of this connecting piece 21; This connecting piece 21 is installed in the air intake opening 111 of this filling seat 11, the duct of this connecting piece 21 communicates with this air intake opening 111, this spheroid 23 diameter is slightly less than this connecting piece 21 duct compared with the internal diameter of small end and is greater than the aperture of this end ovalize, this spheroid 23 is located in this connecting piece 21 duct comparatively in small end, and be limited between this connecting piece 21 cell ends and this collar 22 and move freely, be filled into fashionable at pressure-air by connecting piece 21 one end, this spheroid 23 is in leaving collar 22 state.

Please refer to shown in Fig. 2 and Fig. 3, this exhaust banks 30 has fitting piece 31 and a pad 32; The central authorities of this pad 32 have a perforation, this pad 32 1 side is resisted against in the exhausr port 121 of this discharge seat 12, this fitting piece 31 has a through hole, this fitting piece 31 is mounted on the exhausr port 121 of this discharge seat 12, the end face of this fitting piece 31 is resisted against this pad 32 another side, and the through hole of this fitting piece 31 and the perforation of this pad 32 communicate with this inner flow passage 101.

Please refer to shown in Fig. 2, this pressure release group 40 comprises top cover 41, spring 42, installing seat 43, O-ring seal 44, O-ring seal 45, bearing 46, O-ring seal 47 and a push rod 48.

Please refer to shown in Fig. 5, the center of this installing seat 43 is run through a duct, to be shaped a tank in a concave end of this installing seat 43, the tank of this installing seat 43 communicates with the duct of this installing seat 43, this spring 42 is arranged in this tank, in this installing seat 43 stage casing outer rim, there is a groove, sealing circle 44 is sheathed on this groove, another tank of internal face depression shaping of the other end of this installing seat 43, sealing circle 45 is arranged in this another tank, this bearing 46 is in a lid, in these bearing 46 central authorities, there is a through hole, this bearing 46 is sheathed on the other end of this installing seat 43, this push rod 48 has a head and a bar portion, one end, bar portion of this push rod 48 is arranged at this head, the bar portion of this push rod 48 wears the through hole of this bearing 46 and the duct of this installing seat 43, head this bearing 46 contiguous of this push rod 48, sheathed sealing circle 47 between the head of this push rod 48 and this bearing 46, the bar portion other end of this push rod 48 runs through this spring 42 and be combined with each other with this top cover 41, and the bar portion of this push rod 48 has a disappointing short slot 481, the installing seat 43 of this pressure release group 40 is mounted on the pressure relief opening 122 of this discharge seat 12, the duct of this installing seat 43 is corresponding with this pressure relief opening 122, by the elastic force effect of spring 42, the trend of this push rod 48 in movement towards the outside, now O-ring seal 47 is by the potential close of installing seat 43 center.

Please refer to shown in Fig. 4, this scale 50 is installed in this scale seat 13, the ring portion of scale seat 13 is incorporated into by mounting cover 51, make this scale 50 be fixedly arranged in the scale seat 13 of this body 10, this scale 50 reads the joint of stream pressure and measurement mouth 131 UNICOM of this scale seat 131 in this body 10.

Please refer to shown in Fig. 6 and Fig. 7, amount of the present invention lets out dual-purpose another embodiment barometric, the Lower Half of this body 10 by this filling seat 11 in the interval of this discharge seat 12, follow the profile of this scale seat 13 and this inner flow passage 101 by bottom-up depression shaping one stepped profile of this body 10, and form an opening in this body 10 Lower Half away from the periphery of this scale seat 13 and this inner flow passage 101, and, this body 10 has more a lid 15, this lid 15 is a profile is the bending sheet of circular arc, formation one joint portion 151 is protruded out separately in the both ends of this lid 15 transverse direction, the opening of the Lower Half in this body 10 can be established or be dismantled to this lid 15 group, the circular arc inner edge surface of this lid 15 is towards this body 10 and be located at the opening part of this body 10 Lower Half with described joint portion 151 button, and this lid 15 is mounted on the Lower Half of this body 10 to form an appearance cave 16.

In the present invention, the air intake opening 111 of the inner flow passage 101 of body 10 this filling seat 11 of UNICOM simultaneously, the measurement mouth 131 of the exhausr port 121 of this discharge seat 12 and pressure relief opening 122 and this scale seat, amount of the present invention is made to let out dual-purpose rain glass in time using, connect in this filling seat 11 and establish charger, in the installing aerated product that the exhausr port 121 of this discharge seat 12 is direct or indirect, in the process of inflating pressure, the pressure value that this scale 50 that user's observable is arranged at this scale seat 13 reads, to determine whether continue filling gas, if the pressure of this aerated product inside exceedes setting, please refer to shown in Fig. 5, the pressure release group 40 being installed in this discharge seat 12 pressure relief opening 122 can be pressed, by bestowing an external force in this top cover 41, to resist the elastic force of this spring 42, push rod 48 is moved towards body 10 direction, the short slot 481 that now loses heart no longer is subject to O-ring seal 45 and closes, make the inner unnecessary pressure of this aerated product can be released by disappointing short slot 481 wash with watercolours of this push rod 48, can once complete, without the need to such as prior art, dismounting is filled frequently, lose heart joint and scale, causes inefficiency the whole process of the inflation of this aerated product, measurement and pressure release, the described side channel 14 of this body 10 can in order to put inflatable ball pin, in addition, in another embodiment of the present invention, this body 10 Lower Half caves inward shaping, and establish to form this appearance cave 16 with fixable/dismountable this lid 15 groups in this body 10 Lower Half, this appearance cave 16 is installed with place as inflatable ball pin.

The above is only preferred embodiment of the present invention, not any pro forma restriction is done to the present invention, although the present invention discloses as above with preferred embodiment, but and be not used to limit the present invention, have in any art and usually know the knowledgeable, not departing from the scope of technical solution of the present invention, make a little change when the technology contents of above-mentioned announcement can be utilized or be modified to the Equivalent embodiments of equivalent variations, in every case be the content not departing from technical solution of the present invention, according to any simple modification that technical spirit of the present invention is done above embodiment, equivalent variations and modification, all still belong in the scope of technical solution of the present invention.

Claims (11)

1. amount lets out a dual-purpose rain glass, it is characterized in that, described amount is let out dual-purpose rain glass and comprised a body, an air inlet group, an exhaust banks, a pressure release group and a scale;

Described body one end is located in described air inlet assembling, the other end that described body is relative is threeway tubulose, one end of the threeway tubular tip of described body forms in described body, and in another two ends, group establishes described exhaust banks and described pressure release group respectively, and described scale is installed in the top of described body;

Form the inner flow passage that has four port manifolds in described body, described inner flow passage UNICOM is in described air inlet group, described exhaust banks, described pressure release group and described scale.

2. amount as claimed in claim 1 lets out dual-purpose rain glass, it is characterized in that, described body has a filling seat, and discharges seat and a scale seat;

Described filling seat protrudes out the one end being formed at described body, and described discharge seat is arranged at the other end of described body, and described scale seat is shaped in the first half of described body to lower recess;

Described filling seat caves inward formation one air intake opening;

Described discharge seat has the exhausr port and a pressure relief opening that are vertical setting mutually, and described exhausr port to cave inward formation away from the end face of described body relatively in described discharge seat, and described pressure relief opening depression forms in the side of described discharge seat;

Described scale seat protrudes out formation one ring portion in described body first half outer rim, and bottom described scale seat, the inner flow passage place depression shaping one of contiguous described body measures mouth.

3. amount as claimed in claim 2 lets out dual-purpose rain glass, and it is characterized in that, described pressure release group comprises a top cover, a spring, an installing seat, a bearing, a push rod and multiple O-ring seal;

The center of described installing seat is run through a duct, to be shaped a tank in a concave end of described installing seat, the tank of described installing seat communicates with the duct of described installing seat, described spring is arranged in described tank, in described installing seat stage casing, outer rim has a groove, first described O-ring seal is sheathed on described groove, another tank of other end depression shaping of described installing seat, second described O-ring seal is arranged in tank described in another, described bearing is a lid, have a through hole in described bearing central authorities, described bearing is sheathed on the other end of described installing seat;

Described push rod has a head and a bar portion, the bar portion of described push rod has a disappointing short slot, one end, bar portion of described push rod is arranged at the head of described push rod, the bar portion of described push rod wears the through hole of described bearing and the duct of described installing seat, the contiguous described bearing of head of described push rod, sheathed 3rd described O-ring seal between the head of described push rod and described bearing, the bar portion other end of described push rod runs through described spring and is mounted on described top cover;

The installing seat of described pressure release group is mounted on the pressure relief opening of the discharge seat of described body.

4. amount lets out dual-purpose rain glass as claimed in claim 2 or claim 3, it is characterized in that, described body also has multiple side channel, described side channel is by described filling seat in the interval of described discharge seat, and the setting direction corresponding to described filling seat and described discharge seat is shaped in the both sides outer rim of described body Lower Half towards sunken inside.

5. amount as claimed in claim 4 lets out dual-purpose rain glass, and it is characterized in that, described air inlet group has a connecting piece, a collar and a spheroid;

It is cylindric that described connecting piece is a ladder, a duct is run through in inside, described duct is stepped, the external diameter of described connecting piece one end is greater than the external diameter of the other end, and the internal diameter of internal gutter one end of described connecting piece is greater than the internal diameter of the other end, in the cell ends ovalize of described connecting piece internal diameter compared with small end;

A duct is run through in described collar inside, and described collar one end external diameter is greater than other end external diameter, and described collar external diameter is mounted on the duct internal diameter smaller part of described connecting piece compared with small end, and the duct of described collar communicates in the duct of described connecting piece;

The duct that described sphere diameter is less than described connecting piece compared with small end internal diameter but be greater than the aperture of duct compared with small end ovalize of described connecting piece, the duct that described spheroid is located in described connecting piece is comparatively in small end, and between the cell ends being limited to described connecting piece and described collar;

The connecting piece of described air inlet group is mounted on the air intake opening of the filling seat of described body.

6. amount as claimed in claim 5 lets out dual-purpose rain glass, and it is characterized in that, described exhaust banks has a fitting piece and a pad;

The central authorities of described pad have a perforation, described pad one side is resisted against in the exhausr port of described discharge seat, described fitting piece has a through hole, the end face of described fitting piece is resisted against described pad another side, and the through hole of described fitting piece communicates with the exhausr port of the perforation of described pad and described discharge seat;

Described set of engagement members is located at the exhausr port of described discharge seat.

7. amount as claimed in claim 6 lets out dual-purpose rain glass, and it is characterized in that, described scale is installed in the scale seat of described body, and is incorporated into the ring portion of described scale seat by mounting cover, the joint of described scale and the measurement mouth UNICOM of described scale seat;

The measurement mouth UNICOM of the air intake opening of described filling seat, the exhausr port of described discharge seat and pressure relief opening and described scale seat is in the inner flow passage of described body.

8. amount lets out dual-purpose rain glass as claimed in claim 2 or claim 3, it is characterized in that, the Lower Half of described body by described filling seat in the interval of described discharge seat, follow the profile of described scale seat and described inner flow passage by bottom-up depression shaping one stepped profile of described body, the Lower Half of described body forms an opening at the periphery away from described scale seat and described inner flow passage;

Described body has a lid, and described lid profile is the bending sheet of circular arc, protrudes out formation one joint portion separately in the both ends of described lid transverse direction;

The circular arc inner edge surface of described lid is towards described body and be located at the opening of described body Lower Half with described joint portion button.

9. amount as claimed in claim 8 lets out dual-purpose rain glass, and it is characterized in that, described air inlet group has a connecting piece, a collar and a spheroid;

It is cylindric that described connecting piece is a ladder, a duct is run through in inside, described duct is stepped, the external diameter of described connecting piece one end is greater than the external diameter of the other end, and the internal diameter of internal gutter one end of described connecting piece is greater than the internal diameter of the other end, in the cell ends ovalize of described connecting piece internal diameter compared with small end;

A duct is run through in described collar inside, and described collar one end external diameter is greater than other end external diameter, and described collar external diameter is mounted on the duct internal diameter smaller part of described connecting piece compared with small end, and the duct of described collar communicates in the duct of described connecting piece;

The duct that described sphere diameter is less than described connecting piece compared with small end internal diameter but be greater than the aperture of duct compared with small end ovalize of described connecting piece, the duct that described spheroid is located in described connecting piece is comparatively in small end, and between the cell ends being limited to described connecting piece and described collar;

The connecting piece of described air inlet group is mounted on the air intake opening of the filling seat of described body.

10. amount as claimed in claim 9 lets out dual-purpose rain glass, and it is characterized in that, described exhaust banks has a fitting piece and a pad;

The central authorities of described pad have a perforation, described pad one side is resisted against in the exhausr port of described discharge seat, described fitting piece has a through hole, the end face of described fitting piece is resisted against described pad another side, and the through hole of described fitting piece communicates with the exhausr port of the perforation of described pad and described discharge seat;

Described set of engagement members is located at the exhausr port of described discharge seat.

11. amounts as claimed in claim 10 let out dual-purpose rain glass, and it is characterized in that, described scale is installed in the scale seat of described body, and is incorporated into the ring portion of described scale seat by mounting cover, the joint of described scale and the measurement mouth UNICOM of described scale seat;

The measurement mouth UNICOM of the air intake opening of described filling seat, the exhausr port of described discharge seat and pressure relief opening and described scale seat is in the inner flow passage of described body.