CN112393839A

CN112393839A - Air pump pressure gauge with pressure adjusting function

Info

Publication number: CN112393839A
Application number: CN202011283100.1A
Authority: CN
Inventors: 李健民
Original assignee: Individual
Current assignee: Ashcroft Instruments Jiaxing Co Ltd
Priority date: 2020-11-17
Filing date: 2020-11-17
Publication date: 2021-02-23
Anticipated expiration: 2040-11-17
Also published as: CN114323413A; CN112393839B

Abstract

The invention discloses an air pump pressure gauge with a pressure adjusting function, which comprises a first connecting plate and a second connecting plate, wherein a connecting pipe is fixedly inserted in the middle of the first connecting plate, a pressure gauge body is fixedly connected to the upper end of the connecting pipe, a connecting sleeve is fixedly sleeved on the lower part of the outer surface of the connecting pipe, a sealing rubber sleeve is fixedly clamped on the inner circumferential surface of the connecting sleeve, a connecting ring is fixedly connected in the middle of the inner circumferential surface of the sealing rubber sleeve, an air guide pipe is fixedly inserted in the middle of the second connecting plate, and an upper sealing mechanism and a lower sealing mechanism are movably sleeved on the outer part of the connecting sleeve. According to the invention, the sealing rubber sleeve and the connecting sleeve are arranged, so that the sealing performance of the connecting part of the connecting pipe and the air guide pipe is higher, the sealing performance of the connecting part of the connecting pipe and the air guide pipe can be further enhanced by arranging the upper sealing mechanism and the lower sealing mechanism, and the pressure gauge is more convenient to assemble, disassemble and maintain.

Description

Air pump pressure gauge with pressure adjusting function

Technical Field

The invention relates to the technical field of air pump pressure gauges, in particular to an air pump pressure gauge with a pressure adjusting function.

Background

At present, the pressure gauge is an instrument which takes an elastic element as a sensitive element and measures and indicates the pressure higher than the environmental pressure, the application is very common, the pressure gauge almost extends to all the fields of industrial processes and scientific researches, and is visible everywhere in the fields of heat pipe networks, oil and gas transmission, water and gas supply systems, vehicle maintenance and repair shops and the like, and particularly in the industrial process control and technical measurement process, the mechanical pressure gauge is more and more widely applied due to the characteristics of high mechanical strength, convenient production and the like of the elastic sensitive element of the mechanical pressure gauge.

At present, the change method of current manometer on the market is diversified, but its change step is still fairly loaded down with trivial details relatively, for example adopts welded closed mode and bolted connection mode, and welded mode can lead to when the maintenance manometer, and it is inconvenient to maintain, and bolted connection mode when the bolt is shaken the pine, can reduce the leakproofness of the erection joint department of manometer, produces the gas leakage phenomenon, makes the detection of manometer inaccurate.

Disclosure of Invention

The invention mainly aims to provide an air pump pressure gauge with a pressure adjusting function, which can effectively solve the problems in the background technology.

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

an air pump pressure gauge with a pressure adjusting function comprises a first connecting plate and a second connecting plate, wherein the first connecting plate is arranged above the second connecting plate, a connecting pipe is fixedly inserted in the middle of the first connecting plate, a pressure gauge body is fixedly connected to the upper end of the connecting pipe, a connecting sleeve is fixedly sleeved on the lower portion of the outer surface of the connecting pipe, a sealing rubber sleeve is fixedly clamped on the inner circumferential surface of the connecting sleeve, a connecting ring is fixedly connected to the middle of the inner circumferential surface of the sealing rubber sleeve, an air guide pipe is fixedly inserted in the middle of the second connecting plate, the upper end of the connecting ring is in contact with the lower end of the connecting pipe, the lower end of the connecting ring is in contact with the upper end of the air guide pipe, the upper portion of the inner circumferential surface and the lower portion of the inner circumferential surface of the sealing rubber sleeve, an upper sealing mechanism and a lower sealing mechanism are movably sleeved outside the connecting sleeve, the lower sealing mechanism is arranged below the upper sealing mechanism, an upper connecting seat and a lower connecting seat are fixedly connected to the outer circumferential surface of the upper sealing mechanism and the outer circumferential surface of the lower sealing mechanism respectively, the upper connecting seat and the lower connecting seat are arranged to be four in annular array distribution, a connecting bolt is movably inserted between the upper connecting seat and the lower connecting seat which are adjacent from top to bottom, the connecting bolt fixedly connects a first connecting plate and a second connecting plate together, an upper clamping groove and a lower clamping groove are respectively arranged on the upper part and the lower part of the outer surface of the connecting sleeve, the upper sealing mechanism is movably connected in the upper clamping groove, the upper sealing mechanism is in contact with the upper part of the outer circumferential surface of the sealing rubber sleeve, and the lower sealing mechanism is movably connected in the lower clamping groove, the lower sealing mechanism is contacted with the lower part of the outer surface of the sealing rubber sleeve;

the utility model discloses a manometer body, including shell and transparent cover, the front end of shell has seted up the mounting groove along annular edge, No. two mounting grooves have been seted up on the mounting groove, the rear end fixedly connected with collar of transparent cover, the rear end fixedly connected with collar No. two collars of collar, fixedly connected with connection arch on the outer periphery of collar, connection arch is provided with four and is annular array and distributes, equal swing joint has connecting screw on four connection arch, the outer periphery lower part of shell and the upper end fixed connection of connecting pipe.

Preferably, a collar and the equal joint of connection arch are fixed in a mounting groove, No. two collars are pegged graft and are fixed in No. two mounting grooves, connecting screw and shell threaded connection are in the same place.

Preferably, go up draw-in groove and draw-in groove down and all set up to be four that the ring array distributes, go up draw-in groove and be crisscross setting from top to bottom down, the contained angle between last draw-in groove and the draw-in groove down is 45 degrees.

Preferably, the upper sealing mechanism comprises a sealing support, a square through groove is formed in the upper end of the sealing support, a first sliding groove is formed in each of four groove walls of the through groove, a second sliding groove is formed in the upper end of the sealing support, a threaded hole is formed in the outer circumferential surface of the sealing support, a push block is movably connected in the first sliding groove, a guide pillar is movably connected in the second sliding groove, the guide pillar and the push block are fixedly inserted in the through groove, a locking bolt is connected in the threaded hole in a threaded manner and is movably connected with the push block, the sealing support is movably sleeved outside the connecting sleeve through the through groove, and the upper connecting seat is fixedly connected to the outer circumferential surface of the sealing support.

Preferably, No. two spouts and screw hole all are provided with four, No. two spouts and screw hole all are annular array and distribute, No. one spout, No. two spouts and screw hole communicate one by one, No. two spouts and a spout are crisscross intercommunication.

Preferably, the inner side surface of the push block is an arc-shaped surface, and the inner side surface of the push block penetrates through the upper clamping groove and is in contact with the upper part of the outer circumferential surface of the sealing rubber sleeve.

Preferably, the second sliding groove is a long elliptic groove, and the length of the second sliding groove is greater than the maximum moving distance of the push block.

Preferably, the upper sealing mechanism and the lower sealing mechanism are consistent in structure, and the connection mode of the upper sealing mechanism and the connecting sleeve, the connection mode of the upper connecting seat and the sealing rubber sleeve is consistent with the connection mode of the lower sealing mechanism and the connecting sleeve, the connection mode of the lower connecting seat and the sealing rubber sleeve.

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

1. through setting up a connecting plate, No. two connecting plates, go up sealing mechanism, sealing mechanism down, connecting sleeve, sealed gum cover and connecting bolt, a connecting plate is fixed on the connecting pipe, No. two connecting plate welding are on the air duct, it is outside at the connecting sleeve to go up sealing mechanism and lower sealing mechanism cover, sealed gum cover nestification is in connecting sleeve, connecting bolt is from up passing No. two connecting plates down in proper order, lower connecting seat, go up connecting seat and a connecting plate, with a connecting plate, No. two connecting plates, go up sealing mechanism, lower sealing mechanism links together, make connecting pipe and air duct link together, it is fixed to make the installation of manometer body, it is more convenient to make the installation of manometer and dismantle the maintenance.

2. Through setting up the sealed gum cover, when connecting fixed connection pipe and air duct through connecting bolt, the interior circumference upper portion and the interior circumference lower part of sealed gum cover are laminated with the outer periphery lower part of connecting pipe and the outer periphery upper portion of air duct respectively, and the upper end and the lower extreme of go-between on the sealed gum cover contact with connecting pipe lower extreme and air duct upper end respectively, thereby can play the sealed effect at the junction of connecting pipe and air duct, improve the sealed effect of connecting pipe and air duct junction, make connecting pipe and air duct junction can not take place to leak gas, guarantee the measurement accuracy of manometer.

3. Through setting up sealing mechanism and lower sealing mechanism, offer draw-in groove and lower draw-in groove on the connecting sleeve, go up sealing mechanism through last draw-in groove and the outer periphery upper portion extrusion contact of sealed gum cover, lower sealing mechanism passes through lower draw-in groove and the outer periphery lower part extrusion contact of sealed gum cover, makes sealed gum cover contact with connecting pipe and air duct laminating more closely to can further improve the sealed effect of connecting pipe and air duct junction, further guarantee the measurement accuracy of manometer.

Drawings

FIG. 1 is an overall structure diagram of an air pump pressure gauge with a pressure adjusting function according to the present invention;

FIG. 2 is an overall structure diagram of a connection sleeve of an air pump pressure gauge with a pressure adjusting function according to the present invention;

FIG. 3 is a cross-sectional view of a connecting sleeve and a sealing rubber sleeve of an air pump pressure gauge with a pressure adjusting function;

FIG. 4 is a schematic view of the connection between the connection ring and the connection pipe of the air pump pressure gauge with pressure adjusting function and the air duct according to the present invention;

FIG. 5 is an overall structure view of a housing of a pressure gauge of an air pump with a pressure adjusting function according to the present invention;

FIG. 6 is an overall structure view of a transparent cover of an air pump pressure gauge with a pressure adjusting function according to the present invention;

FIG. 7 is an enlarged view of the structure at the position A of the pressure gauge of the air pump with the pressure regulating function according to the present invention;

FIG. 8 is an overall structure view of an upper sealing mechanism of an air pump pressure gauge with a pressure adjusting function according to the present invention;

FIG. 9 is a view showing the internal structure of an upper sealing mechanism of a pressure gauge of an air pump with pressure adjusting function according to the present invention;

FIG. 10 is a cross-sectional view of a sealing bracket of an air pump pressure gauge with a pressure adjusting function according to the present invention;

fig. 11 is a schematic connection diagram of a connection sleeve and a first push block of an air pump pressure gauge with a pressure adjusting function.

In the figure: 1. a first connecting plate; 2. a second connecting plate; 3. a pressure gauge body; 4. a connecting pipe; 5. a connecting sleeve; 6. sealing the rubber sleeve; 7. an upper sealing mechanism; 8. a lower sealing mechanism; 9. an upper connecting seat; 10. a lower connecting seat; 11. a connecting bolt; 12. an upper clamping groove; 13. a lower clamping groove; 14. a connecting ring; 15. an air duct; 31. a housing; 32. a first mounting groove; 33. mounting grooves II; 34. a transparent cover; 35. a first mounting ring; 36. a second mounting ring; 37. a connecting projection; 38. a connecting screw; 71. sealing the bracket; 72. a through groove; 73. a first chute; 74. a second chute; 75. a threaded hole; 76. a push block; 77. a guide post; 78. and locking the bolt.

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.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front", "rear", "both ends", "one end", "the other end", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "connected," and the like are to be construed broadly, such as "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in figures 1-11, an air pump pressure gauge with a pressure adjusting function comprises a first connecting plate 1 and a second connecting plate 2, the first connecting plate 1 is arranged above the second connecting plate 2, a connecting pipe 4 is fixedly inserted into the middle of the first connecting plate 1, a pressure gauge body 3 is fixedly connected to the upper end of the connecting pipe 4, a connecting sleeve 5 is fixedly sleeved on the lower portion of the outer surface of the connecting pipe 4, a sealing rubber sleeve 6 is fixedly clamped on the inner circumferential surface of the connecting sleeve 5, a connecting ring 14 is fixedly connected to the middle of the inner circumferential surface of the sealing rubber sleeve 6, an air guide pipe 15 is fixedly inserted into the middle of the second connecting plate 2, the upper end of the connecting ring 14 is in contact with the lower end of the connecting pipe 4, the lower end of the connecting ring 14 is in contact with the upper end of the air guide pipe 15, the upper portion of the inner circumferential surface and the lower portion of the inner, an upper sealing mechanism 7 and a lower sealing mechanism 8 are movably sleeved outside the connecting sleeve 5, the lower sealing mechanism 8 is arranged below the upper sealing mechanism 7, an upper connecting seat 9 and a lower connecting seat 10 are respectively and fixedly connected on the outer circumferential surface of the upper sealing mechanism 7 and the outer circumferential surface of the lower sealing mechanism 8, the upper connecting seat 9 and the lower connecting seat 10 are respectively arranged into four groups distributed in an annular array, a connecting bolt 11 is jointly and movably inserted between the upper connecting seat 9 and the lower connecting seat 10 which are adjacent up and down, the connecting bolt 11 fixedly connects the first connecting plate 1 and the second connecting plate 2 together, an upper clamping groove 12 and a lower clamping groove 13 are respectively arranged on the upper part and the lower part of the outer surface of the connecting sleeve 5, the upper sealing mechanism 7 is movably connected in the upper clamping groove 12, the upper sealing mechanism 7 is contacted with the upper part of the outer circumferential surface of the sealing rubber sleeve 6, and the lower sealing mechanism 8, the lower sealing mechanism 8 is contacted with the lower part of the outer surface of the sealing rubber sleeve 6;

pressure gauge body 3 includes shell 31 and transparent cover 34, shell 31's front end has seted up mounting groove 32 along the annular edge No. one, No. two mounting grooves 33 have been seted up on mounting groove 32, No. one installing ring 35 of rear end fixedly connected with of transparent cover 34, No. two installing rings 36 of rear end fixedly connected with of installing ring 35, fixedly connected with connection arch 37 on the outer periphery of installing ring 35, connection arch 37 is provided with four and is the annular array and distributes, equal swing joint has connecting screw 38 on four connection arch 37, the outer periphery lower part of shell 31 and the upper end fixed connection of connecting pipe 4.

No. one collar 35 and connecting bulge 37 are all fixed in the mounting groove 32 of joint, and No. two collars 36 are pegged graft and are fixed in No. two mounting grooves 33, and connecting screw 38 and shell 31 threaded connection are in the same place.

Go up draw-in groove 12 and draw-in groove 13 down and all set up to be four that the annular array distributes, go up draw-in groove 12 and draw-in groove 13 and be crisscross setting from top to bottom down, go up draw-in groove 12 and draw-in groove 13 down between the contained angle be 45 degrees, can make the working face of going up sealing mechanism 7 and lower sealing mechanism 8 crisscross from top to bottom, improve the result of use of going up sealing mechanism 7 and lower sealing mechanism 8.

The upper sealing mechanism 7 comprises a sealing support 71, the upper end of the sealing support 71 is provided with a square through groove 72, four groove walls of the through groove 72 are respectively provided with a first sliding groove 73, the upper end of the sealing support 71 is provided with a second sliding groove 74, the outer circumferential surface of the sealing support 71 is provided with a threaded hole 75, the first sliding groove 73 is internally movably connected with a push block 76, the second sliding groove 74 is internally movably connected with a guide post 77, the guide post 77 and the push block 76 are fixedly inserted, the threaded hole 75 is internally connected with a locking bolt 78, the locking bolt 78 is movably connected with the push block 76, the sealing support 71 is movably sleeved outside the connecting sleeve 5 through the through groove 72, the upper connecting seat 9 is fixedly connected on the outer circumferential surface of the sealing support 71, the push block 76 is pushed to be in contact with the sealing rubber sleeve 6 by rotating the locking bolt 78, so that the sealing rubber sleeve 6 is more tightly attached to the outer, the sealing effect is better.

No. two spout 74 and screw hole 75 all are provided with four, and No. two spout 74 and screw hole 75 all are annular array and distribute, and a spout 73, No. two spout 74 and screw hole 75 communicate one by one, and No. two spout 74 and a spout 73 are crisscross intercommunication, can make and just can promote the ejector pad 76 through rotating locking bolt 78 and remove, and the mobility control of ejector pad 76 is more convenient.

The inner side surface of the push block 76 is an arc-shaped surface, the inner side surface of the push block 76 penetrates through the upper clamping groove 12 and is in contact with the upper part of the outer circumferential surface of the sealing rubber sleeve 6, so that the push block 76 and the sealing rubber sleeve 6 can be in closer contact and have larger contact surface, the sealing rubber sleeve 6 is fully extruded on the outer circumferential surface of the connecting pipe 4, and the using effect of the push block 76 is improved.

The second sliding groove 74 is a long elliptic groove, the length of the second sliding groove 74 is greater than the maximum moving distance of the push block 76, so that the push block 76 obtains the maximum effective stroke, the push block 76 can be fully contacted with the sealing rubber sleeve 6 under the pushing action of the locking bolt 78 and cannot be separated from the sealing support 71, and further sealing effect is ensured.

Go up sealing mechanism 7 and 8 structures unanimous down, go up sealing mechanism 7 and connecting sleeve 5, go up the connected mode of connecting seat 9 and sealed gum cover 6 and sealing mechanism 8 and connecting sleeve 5 down, the connected mode of connecting seat 10 and sealed gum cover 6 is unanimous down, sealing mechanism 7 and lower sealing mechanism 8 can be operated and used to the person of facilitating the use, make upper sealing mechanism 7 and lower sealing mechanism 8 extrude the upper portion and the lower part of sealed gum cover 6 respectively, it is more convenient to make further sealed operation, improve the convenience of installation and dismantlement.

It should be noted that, the invention is an air pump pressure gauge with pressure adjusting function, when in installation and use, the sealing rubber sleeve 6 is nested in the connecting sleeve 5, the upper part of the inner circumference of the sealing rubber sleeve 6 is contacted with the lower part of the outer circumference of the connecting pipe 4, the upper end of the connecting ring 14 is contacted with the lower end of the connecting pipe 4, then the second connecting plate 2 is welded on the proper position of the air duct 15, then the upper sealing mechanism 7 and the lower sealing mechanism 8 are sequentially nested outside the connecting sleeve 5, then the connecting sleeve 5 and the sealing rubber sleeve 6 are nested on the air duct 15, the lower part of the inner circumference of the sealing rubber sleeve 6 is contacted with the upper part of the outer circumference of the air duct 15, the lower end of the connecting ring 14 is contacted with the upper end of the air duct 15, then the connecting bolt 11 sequentially passes through the second connecting plate 2, the lower connecting seat 10, the upper connecting seat 9 and the first connecting plate 1 from, the connecting bolt 11 is screwed down, the first connecting plate 1 and the second connecting plate 2 are connected together, the connecting pipe 4, the sealing rubber sleeve 6 and the air guide pipe 15 are connected together in a sealing mode, then the upper sealing mechanism 7 is aligned with the upper clamping groove 12, the lower sealing mechanism 8 is aligned with the lower clamping groove 13, then the locking bolts 78 are respectively screwed, the push block 76 penetrates through the upper clamping groove 12 and is connected with the sealing rubber sleeve 6 in an extruding mode, the upper sealing mechanism 7 is connected with the sealing rubber sleeve 6 in a pressurizing mode, and the lower sealing mechanism 8 is connected with the sealing rubber sleeve 6 in a pressurizing mode through the same operation, so that the connecting and the installation of the pressure gauge are completed; according to the invention, the sealing rubber sleeve 6 and the connecting sleeve 5 are arranged, so that the sealing performance of the connecting part of the connecting pipe 4 and the air guide pipe 15 is higher, the sealing performance of the connecting part of the connecting pipe 4 and the air guide pipe 15 can be further enhanced by arranging the upper sealing mechanism 7 and the lower sealing mechanism 8, the connecting bolt 11 is sequentially connected with the second connecting plate 2, the lower connecting seat 10, the upper connecting seat 9 and the first connecting plate 1 through the first connecting plate 1, the second connecting plate 2 and the connecting bolt 11, so that the installation of the pressure gauge can be completed, the connecting bolt 11 is dismounted, the upper sealing mechanism 7 and the lower sealing mechanism 8 are loosened, the rest of the upper sealing mechanism 7 and the rest of the lower sealing mechanism 8 are separated from the connecting sleeve 5, the pressure gauge can be dismounted for maintenance, and the installation, the dismounting and the maintenance of the pressure gauge can be more.

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. The utility model provides a from air pump manometer of taking regulated pressure function, includes connecting plate (1) and No. two connecting plates (2), its characterized in that: the first connecting plate (1) is arranged above the second connecting plate (2), the middle of the first connecting plate (1) is inserted with a connecting pipe (4), the upper end of the connecting pipe (4) is fixedly connected with a pressure gauge body (3), the lower part of the outer surface of the connecting pipe (4) is fixedly connected with a connecting sleeve (5) in a sleeved mode, a sealing rubber sleeve (6) is fixedly connected to the inner circumferential surface of the connecting sleeve (5) in a clamped mode, a connecting ring (14) is fixedly connected to the middle of the inner circumferential surface of the sealing rubber sleeve (6), an air guide pipe (15) is inserted into the middle of the second connecting plate (2), the upper end of the connecting ring (14) is in contact with the lower end of the connecting pipe (4), the lower end of the connecting ring (14) is in contact with the upper end of the air guide pipe (15), and the upper part and the lower part of the inner circumferential surface of the sealing rubber sleeve (6) are respectively attached to the lower An upper sealing mechanism (7) and a lower sealing mechanism (8) are movably sleeved outside the connecting sleeve (5), the lower sealing mechanism (8) is arranged below the upper sealing mechanism (7), an upper connecting seat (9) and a lower connecting seat (10) are fixedly connected to the outer circumferential surface of the upper sealing mechanism (7) and the outer circumferential surface of the lower sealing mechanism (8) respectively, the upper connecting seat (9) and the lower connecting seat (10) are arranged to be four and distributed in an annular array, a connecting bolt (11) is movably inserted between the upper connecting seat (9) and the lower connecting seat (10) which are vertically adjacent, the connecting bolt (11) fixedly connects the first connecting plate (1) and the second connecting plate (2) together, and an upper clamping groove (12) and a lower clamping groove (13) are formed in the upper portion and the lower portion of the outer surface of the connecting sleeve (5) respectively, the upper sealing mechanism (7) is movably connected in the upper clamping groove (12), the upper sealing mechanism (7) is in contact with the upper part of the outer circumferential surface of the sealing rubber sleeve (6), the lower sealing mechanism (8) is movably connected in the lower clamping groove (13), and the lower sealing mechanism (8) is in contact with the lower part of the outer surface of the sealing rubber sleeve (6);

manometer body (3) include shell (31) and transparent lid (34), mounting groove (32) have been seted up along the annular edge to the front end of shell (31), No. two mounting grooves (33) have been seted up on mounting groove (32), No. one mounting ring (35) of rear end fixedly connected with of transparent lid (34), No. two mounting ring (36) of rear end fixedly connected with of a mounting ring (35), fixedly connected with connects protruding (37) on the outer periphery of a mounting ring (35), connect protruding (37) and be the annular array and distribute, equal swing joint has connecting screw (38) on four connecting protruding (37), the outer periphery lower part of shell (31) and the upper end fixed connection of connecting pipe (4).

2. The air pump pressure gauge with the pressure adjusting function as claimed in claim 1, wherein: no. one collar (35) and connect equal joint of arch (37) to fix in mounting groove (32), No. two collar (36) are pegged graft and are fixed in mounting groove (33) No. two, connecting screw (38) are in the same place with shell (31) threaded connection.

3. The air pump pressure gauge with the pressure adjusting function as claimed in claim 1, wherein: go up draw-in groove (12) and draw-in groove (13) down and all set up to be four that the annular array distributes, go up draw-in groove (12) and draw-in groove (13) and be crisscross setting from top to bottom, the contained angle of going up between draw-in groove (12) and draw-in groove (13) down is 45 degrees.

4. The air pump pressure gauge with the pressure adjusting function as claimed in claim 1, wherein: the upper sealing mechanism (7) comprises a sealing bracket (71), the upper end of the sealing bracket (71) is provided with a square through groove (72), a first sliding groove (73) is formed in each of the four groove walls of the through groove (72), a second sliding groove (74) is formed in the upper end of the sealing support (71), a threaded hole (75) is arranged on the outer circumferential surface of the sealing support (71), a push block (76) is movably connected in the first sliding groove (73), a guide post (77) is movably connected in the second sliding groove (74), the guide post (77) is fixedly connected with the push block (76) in an inserting way, a locking bolt (78) is connected with the internal thread of the threaded hole (75), the locking bolt (78) is movably connected with the push block (76), the sealing support (71) is movably sleeved outside the connecting sleeve (5) through a through groove (72), the upper connecting seat (9) is fixedly connected to the outer circumferential surface of the sealing support (71).

5. The air pump pressure gauge with the pressure adjusting function as claimed in claim 4, wherein: no. two spout (74) and screw hole (75) all are provided with four, No. two spout (74) and screw hole (75) all are annular array and distribute, spout (73), No. two spout (74) and screw hole (75) communicate one by one, No. two spout (74) and a spout (73) are crisscross intercommunication.

6. The air pump pressure gauge with the pressure adjusting function as claimed in claim 4, wherein: the inner side surface of the push block (76) is an arc-shaped surface, and the inner side surface of the push block (76) penetrates through the upper clamping groove (12) and is in contact with the upper part of the outer circumferential surface of the sealing rubber sleeve (6).

7. The air pump pressure gauge with the pressure adjusting function as claimed in claim 1, wherein: the second sliding groove (74) is a long elliptic groove, and the length of the second sliding groove (74) is larger than the maximum moving distance of the push block (76).

8. The air pump pressure gauge with the pressure adjusting function as claimed in claim 1, wherein: the structure of the upper sealing mechanism (7) is consistent with that of the lower sealing mechanism (8), and the connection mode of the upper sealing mechanism (7) and the connecting sleeve (5), the connection mode of the upper connecting seat (9) and the sealing rubber sleeve (6) is consistent with that of the lower sealing mechanism (8) and the connecting sleeve (5), the connection mode of the lower connecting seat (10) and the sealing rubber sleeve (6).