CN218156646U - Pressure gauge - Google Patents

Abstract

The utility model discloses a pressure gauge relates to measuring equipment technical field. The pressure gauge comprises a base and a spring tube, the base is provided with an installation platform, the side wall of the installation platform is provided with an installation groove, a channel is formed inside the installation platform, and the channel is communicated with the installation groove; one end of the spring tube is inserted in the mounting groove and sealed through sealant, and the inner cavity of the spring tube is communicated with the channel. Through setting up the mount table at the base, the mount table sets up the mounting groove, and the inside of mount table is equipped with the passageway with the mounting groove intercommunication, and when consequently the one end of spring pipe was inserted and is located the mounting groove, the passageway can communicate with the inside of spring pipe. Gas or liquid can enter the spring tube through the channel, so that the spring tube can deform under the action of pressure. Because the spring pipe sets up at the mounting groove through the mode of pegging graft, consequently the installation is simple swift, and the one end of spring pipe seals in the mounting groove through sealed glue, therefore the leakproofness of spring pipe is better, effectively reduces gas leakage or the condition of leaking.

Description

Pressure gauge

Technical Field

The utility model relates to a measuring equipment technical field especially relates to a manometer.

Background

The pressure gauge may be used to measure air pressure or water pressure. The pressure gauge mainly comprises a spring tube, a transmission mechanism and a pointer, wherein one end of the spring tube is connected with the pipeline to be measured, the other end of the spring tube is connected with the transmission mechanism, and the transmission mechanism is connected with the pointer. Taking the measurement atmospheric pressure as an example, gas gets into in the spring tube, because the effect of atmospheric pressure, the spring tube can take place the deformation of different degree according to the size that pressure is different, and then drives drive mechanism and rotate, and drive mechanism drives the pointer and rotates to instruct the pressure of current gas. In the correlation technique, the tip of spring pipe adopts the sealing washer to seal usually, and can adopt the mode of joint to fix for convenient assembly, therefore the leakproofness of spring pipe is relatively poor, leaks gas easily.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides a manometer can improve the sealing performance of spring pipe.

According to the utility model discloses the manometer, include:

the mounting platform comprises a base, a mounting platform and a positioning device, wherein the side wall of the mounting platform is provided with a mounting groove, a channel is formed inside the mounting platform, and the channel is communicated with the mounting groove;

one end of the spring tube is inserted in the mounting groove and sealed through sealant, and an inner cavity of the spring tube is communicated with the channel.

According to the utility model discloses the manometer has following beneficial effect at least:

through setting up the mount table at the base, the mount table sets up the mounting groove, and the inside of mount table is equipped with the passageway with the mounting groove intercommunication, therefore when the one end of spring pipe was inserted and is located the mounting groove, the passageway can communicate with the inside of spring pipe. Gas or liquid can enter the spring tube through the channel, so that the spring tube can deform under the action of pressure. Because the spring pipe sets up at the mounting groove through the mode of pegging graft, consequently the installation is simple swift, and the one end of spring pipe seals in the mounting groove through sealed glue, therefore the leakproofness of spring pipe is better, effectively reduces gas leakage or the condition of leaking.

According to some embodiments of the utility model, the inward protrusion of the wall of mounting groove is formed with the step, the step encircles the spring tube setting.

According to some embodiments of the utility model, the manometer still includes the dial plate, the dial plate deviates from one side of dial plate scale is equipped with the reference column, the mount table is equipped with the locating hole, the reference column with locating hole location fit.

According to some embodiments of the utility model, the manometer still includes watchcase and dial plate, the watchcase has the top cap and encircles the lateral wall that the top cap border set up, the lateral wall inboard of watchcase is encircleed and is provided with a plurality of spacing posts, and is a plurality of spacing post with the dial plate butt, so that the dial plate with the top cap interval sets up.

According to some embodiments of the utility model, the manometer still includes the watchcase, the watchcase cover is located the mount table and with base fixed connection, the lateral wall of watchcase is equipped with the location breach, the base is equipped with the location arch, the location arch with location breach location fit.

According to some embodiments of the utility model, the manometer still include with the drive mechanism that the mount table is connected, drive mechanism includes first connecting rod, second connecting rod, third connecting rod, gear shaft and first support column, the one end of first connecting rod with the spring tube is kept away from the one end fixed connection of mount table, the other end of first connecting rod with the one end of second connecting rod is rotated and is connected, the other end of second connecting rod with the one end of third connecting rod is rotated and is connected, the other end of third connecting rod is equipped with the fan tooth, the third connecting rod rotate connect in first support column, the fan tooth with the gear engagement of gear shaft.

According to some embodiments of the utility model, drive mechanism still includes along the upper junction plate and the lower connecting plate of upper and lower direction interval setting, the upper junction plate with the lower connecting plate all connect in the mount table, the both ends difference fixed connection of first support column in the upper junction plate with the lower connecting plate.

According to the utility model discloses a some embodiments, drive mechanism still includes second support column and coil spring, the both ends of second support column are connected respectively the upper junction plate with lower connecting plate, the coil spring has interior book end and epitaxial end, interior book end connect in the gear shaft, epitaxial end connect in the second support column.

According to the utility model discloses a some embodiments, the manometer still includes the pointer, pointer fixed connection in the gear shaft.

According to some embodiments of the utility model, the base is equipped with the overflow hole.

According to some embodiments of the utility model, the base deviates from one side of mount table is equipped with the joint, the inner chamber that connects with the passageway intercommunication.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The invention will be further described with reference to the following drawings and examples, in which:

fig. 1 is a schematic view of an overall structure of a pressure gauge according to an embodiment of the present invention;

fig. 2 is an exploded view of a pressure gauge according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of a pressure gauge according to an embodiment of the present invention;

fig. 4 is a cross-sectional view of the base and plunger cooperation of an embodiment of the present invention;

fig. 5 is a cross-sectional view of a base of an embodiment of the present invention;

fig. 6 is a schematic view of a dial plate of an embodiment of the present invention;

figure 7 is a schematic view of a watch case according to an embodiment of the invention;

fig. 8 is a schematic structural view of a pressure gauge portion according to an embodiment of the present invention;

fig. 9 is a schematic structural diagram of a part of the pressure gauge according to an embodiment of the present invention.

Reference numerals:

a pressure gauge 1000;

a base 100; an air inlet 101; an air outlet 102; a mounting table 110; a mounting groove 111; a step 1111; a channel 112; a gap 113; positioning holes 116; a positioning boss 120; an overflow aperture 130; a joint 140;

a spring tube 200;

a dial 300; a positioning post 310;

a transmission mechanism 400; a first link 410; a second link 420; a third link 430; the sector gear 431; a gear shaft 440; a first support column 450; a second support column 460; an upper connection plate 470; a lower connecting plate 480; a coil spring 490;

a pointer 500;

a watch case 600; a positioning notch 610; a stopper post 620;

a plunger 700.

Detailed Description

Reference will now be made in detail to the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it should be understood that the orientation or positional relationship indicated with respect to the orientation description, such as up, down, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, a plurality of means are one or more, a plurality of means are two or more, and the terms greater than, less than, exceeding, etc. are understood as not including the number, and the terms greater than, less than, within, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present invention, unless there is an explicit limitation, the words such as setting, installation, connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in combination with the specific contents of the technical solution.

Manometer 1000 can be used for measuring atmospheric pressure or water pressure, the embodiment of the utility model discloses an all explain with measuring atmospheric pressure as the example.

Referring to fig. 1 and 2, in an embodiment of the present invention, the pressure gauge 1000 includes a case 600, a dial 300, a pointer 500, a transmission mechanism 400, a base 100 and a spring tube 200, the transmission mechanism 400 and the spring tube 200 are both mounted on the base 100, and the spring tube 200 can deform according to the pressure of gas, so as to drive the transmission mechanism 400 to move; the dial plate 300 is positioned above the transmission mechanism 400, the dial plate 300 is provided with scales, and a gear shaft 440 of the transmission mechanism 400 penetrates through the dial plate 300; the pointer 500 is positioned above the dial 300 and fixedly connected with the gear shaft 440, and the gear shaft 440 rotates when the transmission mechanism 400 operates, so that the pointer 500 can indicate the pressure value of the current gas; the watch case 600 and the base 100 are fixedly connected and cover the dial 300, the hands 500, the transmission mechanism 400 and the bourdon tube 200, so that the watch case 600 functions as a protector. The utility model discloses a manometer 1000 can improve the leakproofness when spring pipe 200 and mount table 110 are connected, effectively avoids gaseous junction from spring pipe 200 and base 100 to reveal.

Specifically, referring to fig. 2 and 3, in the embodiment of the present invention, the spring tube 200 is a hollow tube, the base 100 is a flat cylindrical shape, the mounting table 110 is disposed on the upper surface of the base 100, the mounting table 110 is substantially in a step shape, the side wall of the end with the higher height of the mounting table 110 is provided with the mounting groove 111, and the shape of the mounting groove 111 matches the shape of the spring tube 200. The mounting groove 111 is provided with an air outlet 102, the bottom of the base 100 is provided with an air inlet 101, a channel 112 is formed inside the mounting table 110, one end of the channel 112 is communicated with the air outlet 102 of the mounting groove 111, and the other end of the channel 112 is communicated with the air inlet 101. The channel 112 is used for air intake, and the gas to be measured can conveniently enter the mounting groove 111 from the channel 112. One end of the spring tube 200 is connected with the mounting groove 111 and sealed by sealant, and the other end of the spring tube 200 can be plugged by sealant, a plug and other structures. The inner cavity of the spring tube 200 is communicated with the channel 112 through the gas outlet 102, so that the gas to be measured can enter the installation groove 111 through the channel 112 and finally enter the spring tube 200.

It can be understood that, by providing the mount table 110 on the base 100, the mount table 110 is provided with the mounting groove 111, and the inside of the mount table 110 is provided with the passage 112 communicating with the mounting groove 111, so that the passage 112 can communicate with the inside of the bourdon tube 200 when one end of the bourdon tube 200 is inserted into the mounting groove 111. The gas to be measured can enter the spring tube 200 through the passage 112, so that the spring tube 200 can be deformed by the gas pressure. Because the spring tube 200 is arranged in the mounting groove 111 in a plugging manner, the mounting is simple and quick, and one end of the spring tube 200 is sealed in the mounting groove 111 through the sealant, so that the sealing performance of the spring tube 200 is better, and the air leakage or water leakage is effectively reduced.

Referring to fig. 3, in the embodiment of the present invention, a gap 113 for accommodating a sealant is formed between the outer circumferential wall of the spring tube 200 and the wall surface of the mounting groove 111. It can be understood that, set up clearance 113 between spring pipe 200 and mounting groove 111, can select suitable clearance 113 size according to actual conditions, can make things convenient for sealed filling of gluing and the sealed volume of gluing of control to make sealed glue can effectively seal spring pipe 200, prevent gas leakage. Referring to fig. 2, the gap 113 may be formed in a manner of: the lateral wall of mounting groove 111 inwards extrudes and forms step 1111, and step 1111 encircles spring pipe 200 and sets up, therefore when spring pipe 200 inserts and locates the cavity that step 1111 encloses and closes the formation, can form clearance 113 between mounting groove 111 and the spring pipe 200, conveniently fills sealed glue.

Referring to fig. 4 and 5, in the embodiment of the present invention, for the convenience of processing, the channel 112 is directly formed through the mounting platform 110, so that a part of the channel 112 is directly communicated with the outer wall of the mounting platform 110, and therefore, a plunger 700 is required to be disposed for plugging. To allow gas to pass through the passage 112 into the gas outlet 102, the outer diameter of the end of the plunger 700 near the gas inlet 101 is smaller than the outer diameter of the end of the plunger 700 far from the gas inlet 101, so that gas can pass between the outer wall of the plunger 700 and the inner wall of the passage 112 into the gas outlet 102, i.e. into the spring tube 200. Therefore, the plunger 700 plays a sealing role, air leakage is prevented, and the measuring precision is ensured.

Referring to fig. 2, 3 and 6, in the embodiment of the present invention, a positioning column 310 is disposed on one side of the dial 300 deviating from the scale, the positioning column 310 is cylindrical, the mounting table 110 is disposed with a positioning hole 116, and the positioning column 310 is matched with the positioning hole 116 in a positioning manner, so as to quickly determine the position of the dial 300. It should be noted that there are two positioning posts 310, and the longer one in fig. 6 is matched with the positioning hole 116 of the mounting table 110 in fig. 2, and the shorter one of the positioning posts 310 is matched with the through hole of the upper connecting plate 470. Through the form of two reference columns 310, the location is swift, can restrict simultaneously that dial plate 300 is rotatory, prevents that dial plate 300 from removing the dislocation.

Referring to fig. 1 and 7, in an embodiment of the present invention, the watch case 600 is a hollow casing with an open lower end, the watch case 600 has a top cover and a sidewall surrounding the edge of the top cover, and the top cover of the watch case 600 is made of a transparent material, such as glass or plastic, to facilitate the observation of the direction of the pointer 500. The inboard of watchcase 600 lateral wall is provided with a plurality of spacing posts 620, and a plurality of spacing posts 620 encircle the top cap setting, and spacing post 620 and watchcase 600 are integrated into one piece. When the watch case 600 is clipped to the base 100, the stopper column 620 can abut against the dial 300, so that the dial 300 and the top cover are arranged at an interval. It can be understood that the pointer 500 is positioned between the top cover and the dial 300, thus enabling the dial 300 and the top cover to be spaced apart from each other to prevent the pointer 500 from contacting the top cover, reducing errors in measurement, and improving the accuracy of measurement.

With continued reference to fig. 1 and 7, in an embodiment of the present invention, the sidewall of the watch case 600 is provided with a positioning notch 610, the base 100 is provided with a positioning protrusion 120, and when the watch case 600 is covered on the mounting platform 110 and fixedly connected with the fixing platform, the positioning protrusion 120 and the positioning notch 610 are in positioning fit to perform a function of quick positioning.

Referring to fig. 8 and 9, in an embodiment of the present invention, the transmission mechanism 400 is connected to the mounting platform 110, the transmission mechanism 400 includes a first connecting rod 410, a second connecting rod 420, a third connecting rod 430, a gear shaft 440 and a first supporting column 450, one end of the first connecting rod 410 is fixedly connected to one end of the spring tube 200 away from the mounting platform 110, the other end of the first connecting rod 410 is rotatably connected to one end of the second connecting rod 420, the other end of the second connecting rod 420 is rotatably connected to one end of the third connecting rod 430, the other end of the third connecting rod 430 is provided with a sector gear 431, the third connecting rod 430 is rotatably connected to the first supporting column 450, and the sector gear 431 is engaged with the gear shaft 440. It can be understood that, when the spring tube 200 is filled with gas, the spring tube 200 deforms under the action of pressure, and then drives the first connecting rod 410 to move, the first connecting rod 410 then drives the second connecting rod 420 to move, the second connecting rod 420 drives the third connecting rod 430 to rotate around the first supporting column 450, so the sector gear 431 rotates through the gear driving gear shaft 440, and the gear shaft 440 can be fixedly connected with the pointer 500, so the gear shaft 440 can drive the pointer 500 to rotate, and then the pressure value of the current gas is reflected according to the scale indicated by the pointer 500.

With continued reference to fig. 8 and 9, in an embodiment of the present invention, the transmission mechanism 400 further includes an upper connecting plate 470 and a lower connecting plate 480, the upper connecting plate 470 and the lower connecting plate 480 are spaced apart in the up-down direction, wherein the upper connecting plate 470 is above and the lower connecting plate 480 is below. The upper connecting plate 470 and the lower connecting plate 480 are both connected to the mounting table 110, and both ends of the first support column 450 are respectively and fixedly connected to the upper connecting plate 470 and the lower connecting plate 480, so that the position of the first support column 450 can be fixed, and the third connecting rod 430 is convenient to rotate around the first support column 450.

With continued reference to fig. 8 and 9, in an embodiment of the present invention, the transmission mechanism 400 further includes a second support pillar 460 and a coil spring 490, two ends of the second support pillar 460 are respectively connected to the upper connecting plate 470 and the lower connecting plate 480, the coil spring 490 has an inward-rolling end and an outward-rolling end, the inward-rolling end is connected to the gear shaft 440, and the outward-rolling end is connected to the second support pillar 460. The coil spring 490 can effectively avoid the pointer 500 from shaking greatly, improving the measurement precision.

Referring to fig. 2, in the embodiment of the present invention, the base 100 is provided with an overflow hole 130, and the overflow hole 130 plays a role of safety protection. For example, when the bourdon tube 200 leaks, in order to avoid the case from being broken due to the overhigh pressure in the pressure gauge 1000, the overflow hole 130 is arranged to drain, and the danger is avoided.

Referring to fig. 4, in the embodiment of the present invention, a joint 140 is disposed on a side of the base 100 away from the mounting platform 110, the joint 140 is in a circular tube shape, an inner cavity of the joint 140 is communicated with the channel 112, and an inner cavity of the joint 140 is the air inlet 101. It will be appreciated that the connector 140 may be connected to a pressure tank (not shown) to facilitate sensing of pressure within the pressure tank.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art.

Claims (10)

1. The manometer, its characterized in that includes:

the mounting platform comprises a base, a mounting platform and a positioning device, wherein the side wall of the mounting platform is provided with a mounting groove, a channel is formed inside the mounting platform, and the channel is communicated with the mounting groove;

one end of the spring tube is inserted in the mounting groove and sealed through sealant, and an inner cavity of the spring tube is communicated with the channel.

2. The pressure gauge according to claim 1, wherein the wall of the mounting groove is formed with a step protruding inward, and the step is disposed around the bourdon tube.

3. The pressure gauge according to claim 1, further comprising a dial plate, wherein a positioning column is disposed on a side of the dial plate facing away from the scale of the dial plate, the mounting table is provided with a positioning hole, and the positioning column is in positioning fit with the positioning hole.

4. The pressure gauge according to claim 1, further comprising a case and a dial, wherein the case has a top cover and a side wall surrounding the edge of the top cover, the inside of the side wall of the case is surrounded by a plurality of position-limiting columns, and the plurality of position-limiting columns abut against the dial, so that the dial and the top cover are spaced apart from each other.

5. The pressure gauge according to claim 1, further comprising a case, wherein the case cover is disposed on the mounting platform and fixedly connected to the base, a positioning notch is formed on a side wall of the case, and a positioning protrusion is formed on the base and is in positioning fit with the positioning notch.

6. The pressure gauge according to claim 1, further comprising a transmission mechanism connected to the mounting table, wherein the transmission mechanism comprises a first connecting rod, a second connecting rod, a third connecting rod, a gear shaft and a first supporting column, one end of the first connecting rod is fixedly connected to one end of the spring tube away from the mounting table, the other end of the first connecting rod is rotatably connected to one end of the second connecting rod, the other end of the second connecting rod is rotatably connected to one end of the third connecting rod, the other end of the third connecting rod is provided with a sector gear, the third connecting rod is rotatably connected to the first supporting column, and the sector gear is engaged with the gear shaft.

7. The pressure gauge according to claim 6, wherein the transmission mechanism further comprises an upper connecting plate and a lower connecting plate which are arranged at intervals in the vertical direction, the upper connecting plate and the lower connecting plate are both connected to the mounting table, and two ends of the first supporting column are respectively and fixedly connected to the upper connecting plate and the lower connecting plate.

8. The pressure gauge according to claim 7, wherein the transmission mechanism further comprises a second support column and a coil spring, two ends of the second support column are respectively connected to the upper connecting plate and the lower connecting plate, the coil spring has an inward-rolling end and an outward-rolling end, the inward-rolling end is connected to the gear shaft, and the outward-rolling end is connected to the second support column.

9. The pressure gauge of claim 6, further comprising a pointer, wherein the pointer is fixedly connected to the gear shaft.

10. The pressure gauge according to claim 1, wherein a joint is provided on a side of the base facing away from the mounting table, and an inner cavity of the joint communicates with the passage.

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