Atmospheric reference micro-pressure data acquisition processor

Abstract

The utility model relates to the technical field of micro-pressure data acquisition, in particular to an atmospheric reference micro-pressure data acquisition processor, which comprises a shell and an air inlet assembly, two air inlets are formed in the bottom of the shell, the air inlet assembly comprises an air inlet pipe, a sealing cover and a protection pipe, one end of the protection pipe is fixedly connected to the interior of the sealing cover, four notches are evenly formed in the side face of the protection pipe, the sliding assemblies are installed in the notches, and first fixing grooves are formed below the notches; a first sealing ring is installed in the first fixing groove, and two second fixing grooves are formed in the outer side face of one end of the air inlet pipe in parallel. The spring can be in a stretched or retracted state through movement of the connecting rod, meanwhile, the air inlet pipe is driven to move in the protection pipe through cooperation of the gear and the rack, the air inlet pipe can stretch out of or retract into the protection pipe, then the situation that the air inlet pipe directly collides with the shell when inserted is avoided, and the service life of the air inlet pipe is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to micro pressure data acquisition technical field, specifically is a kind of atmospheric reference micro pressure data acquisition processor. BACKGROUND

[0002] Atmospheric reference micro pressure data acquisition processor maximum overpressure range F.S*10, precision ±1.5%F.S, function requirement it can show local current pressure value, with alarm function, with filtering function, signal output fluctuation is small, when pressure connection, atmospheric air pipe is connected to the right side of atmospheric reference micro pressure data acquisition processor marked "Low" interface, high-pressure gas pipe is connected to the left side of atmospheric reference micro pressure data acquisition processor marked "High" interface, low-pressure gas pipe is connected to the middle of atmospheric reference micro pressure data acquisition processor marked "High" interface.

[0003] Atmospheric reference micro pressure data acquisition processor bottom is provided with three interfaces such as atmospheric air pipe interface, high-pressure gas pipe interface and low-pressure gas pipe interface, when inserting gas inlet pipe into interface, since three interfaces can only be identified by letter mark simultaneously and its interface bore is small, therefore, if gas inlet pipe is directly inserted into interface, it is easy to make gas inlet pipe directly collide with shell, and further reduce the service life of gas inlet pipe. UTILITY MODEL CONTENT

[0004] In view of the problems in the prior art, the utility model provides an atmospheric reference micro pressure data acquisition processor.

[0005] The utility model solves technical scheme that technical problem adopts: a kind of atmospheric reference micro pressure data acquisition processor, including shell and gas inlet component;The shell bottom is provided with two gas inlets, and the gas inlet component includes gas inlet pipe, sealing cover and protection tube, one end of the protection tube is fixedly connected inside sealing cover, four notches are uniformly arranged on the side surface of the protection tube, the sliding assembly is installed in the notch, the first fixed groove is arranged below the notch, the first sealing ring is installed in the first fixed groove, two second fixed grooves are arranged on the outer side of one end of the gas inlet pipe and are arranged in parallel, and the second sealing ring is installed in the second fixed groove.

[0006] The sliding assembly includes spring, connecting rod and gear, one end of the spring is fixedly connected in the inner wall of the notch, the other end is fixedly connected to the outer side of the connecting rod, and the connecting rod is installed with gear on one end.

[0007] Specifically, the shape of the gas inlet is stepped, one end of the gas inlet protrudes from the shell, and an external thread is arranged on the outer side of the protruding end of the gas inlet.

[0008] Specific, the sealing cover inside the through hole and the second groove, the center axis of the through hole and the second groove coincide, the diameter of the through hole is smaller than the diameter of the second groove, the second groove is internally provided with a thread.

[0009] Specific, the connecting rod away from the top end of the air inlet pipe is hemispherical, the connecting rod and the gear are connected through the shaft, the gear is matched with the rack.

[0010] Specific, the air inlet pipe is installed in the protection pipe, and the protection pipe is in interference fit with the sealing cover.

[0011] Specific, the sealing cover is matched with the protruding end of the air inlet, the protection pipe is matched with the middle end of the air inlet, and the air inlet pipe is matched with the bottom end of the air inlet.

[0012] The utility model discloses beneficial effect:

[0013] (1) a kind of atmospheric reference micro-pressure data acquisition processor described in the utility model, the movement of connecting rod can make spring be in tensile or retraction state, simultaneously by the cooperation of gear and rack, the movement of air inlet pipe in protection pipe can be driven, air inlet pipe can be stretched out or retracted from protection pipe, thereby avoiding air inlet pipe to directly collide with shell when being inserted, prolong the service life of air inlet pipe. DRAWINGS

[0014] The utility model is further described below in connection with drawings and embodiment.

[0015] Figure 1 It is the bottom structure schematic view of the shell of the utility model;

[0016] Figure 2 It is the three-dimensional structure schematic view of air inlet assembly of the utility model;

[0017] Figure 3 It is the three-dimensional structure schematic view of first fixed groove of the utility model;

[0018] Figure 4 It is the three-dimensional structure schematic view of sliding assembly of the utility model;

[0019] Figure 5 It is the air inlet structure sectional view of the utility model;

[0020] Figure 6 It is the sealing cover structure sectional view of the utility model.

[0021] In the diagram: 1. Housing; 2. Air inlet; 3. Air intake assembly; 31. Air intake pipe; 311. First groove; 312. Rack; 32. Sealing cap; 321. Through hole; 322. Second groove; 33. Groove; 34. Sliding assembly; 341. Spring; 342. Connecting rod; 343. Gear; 35. Protective tube; 36. First sealing ring; 37. Second sealing ring; 38. First fixing groove; 39. Second fixing groove. Detailed Implementation

[0022] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0023] like Figures 1-6 As shown, this utility model discloses an atmospheric reference micro-pressure data acquisition processor, which includes a housing 1 and an air intake assembly 3. The housing 1 has two air inlets 2 at its bottom. The air intake assembly 3 includes an air intake pipe 31, a sealing cover 32, and a protective pipe 35. One end of the protective pipe 35 is fixedly connected to the inside of the sealing cover 32. Four slots 33 are evenly arranged on the side of the protective pipe 35. A sliding assembly 34 is installed inside the slots 33. A first fixing groove 38 is provided below the slots 33. A first sealing ring 36 is installed inside the first fixing groove 38. Two parallel second fixing grooves 39 are provided on the outer side of one end of the air intake pipe 31. A second sealing ring 37 is installed inside the second fixing grooves 39.

[0024] The sliding assembly 34 includes a spring 341, a connecting rod 342, and a gear 343. One end of the spring 341 is fixedly connected to the inner wall of the slot 33, and the other end is fixedly connected to the outer side of the connecting rod 342. The gear 343 is installed on one end of the connecting rod 342.

[0025] When collecting atmospheric reference micro-pressure data, the air intake assembly 3 is inserted into the air intake port 2. By rotating the sealing cover 32, the second groove 322 inside the sealing cover 32 engages with the protruding end of the air intake port 2, fixing the air intake assembly 3 onto the housing 1. At the same time, the inner wall of the air intake port 2 will press the connecting rod 342. The connecting rod 342 drives the gear 343 to rotate, and the gear 343 drives the rack 312 to move. The rack 312 drives the air intake pipe 31 to extend out from inside the protective tube 35. The inner wall of the air intake port 2 pressing the connecting rod 342 will cause the spring 341 to be in a stretched state. When the sealing cover 32 separates from the protruding end of the air intake port 2, the spring 341 will automatically rebound and drive the connecting rod 342 to move. Then, the gear 343 drives the rack 312 to move, thereby causing the air intake pipe 31 to retract into the protective tube 35.

[0026] Specifically, the air inlet 2 is stepped in shape, one end of the air inlet 2 protrudes from the housing 1, and the outer side of the protruding end of the air inlet 2 is provided with external threads.

[0027] By setting the stepped air inlet 2, the inner side wall of the air inlet 2 can automatically control the movement of the air inlet pipe 31 by pushing the connecting rod 342 to drive the rolling of the gear 343, and by setting the external thread on the outer side of the protruding end of the air inlet 2, the sealing cover 32 can be fixed on the air inlet 2.

[0028] Specifically, the sealing cover 32 is internally provided with a through hole 321 and a second groove 322, the center axes of the through hole 321 and the second groove 322 coincide, the diameter of the through hole 321 is smaller than that of the second groove 322, and the second groove 322 is internally provided with a thread.

[0029] By setting the through hole 321 and the second groove 322, the threaded end of the air inlet 2 can be inserted into the second groove 322, while not affecting the passage of the protection pipe 35 through the through hole 321.

[0030] Specifically, the top end of the connecting rod 342 away from the air inlet pipe 31 is hemispherical, the connecting rod 342 is connected with the gear 343 through a shaft, and the gear 343 cooperates with the rack 312.

[0031] When the air inlet pipe 31 is inserted into the air inlet 2, the connecting rod 342 cannot continue to move downward due to the blockage of the inner side wall of the threaded end of the air inlet 2, thereby causing the gear 343 to drive the rack 312 to move, so that the air inlet pipe 31 extends out of the protection pipe 35.

[0032] Specifically, the air inlet pipe 31 is installed inside the protection pipe 35, and the protection pipe 35 is in interference fit with the sealing cover 32.

[0033] By installing the air inlet pipe 31 inside the protection pipe 35, it is avoided that the air inlet pipe 31 collides with the shell 1 and is damaged due to misalignment when being inserted into the air inlet 2.

[0034] Specifically, the sealing cover 32 cooperates with the protruding end of the air inlet 2, the protection pipe 35 cooperates with the middle end of the air inlet 2, and the air inlet pipe 31 cooperates with the bottom end of the air inlet 2.

[0035] Cooperating the sealing cover 32, the protection pipe 35 and the air inlet pipe 31 with different parts of the air inlet 2 can not only improve the sealing effect between the air inlet pipe 31 and the shell 1, but also avoid damage of the air inlet pipe 31 due to collision when being inserted.

[0036] Working principle: when collecting atmospheric reference micro-pressure data, insert the air inlet assembly 3 into the air inlet 2, seal the cover 32, the second groove 322 in the cover 32 is matched with the protruding end of the air inlet 2, so that the air inlet assembly 3 is fixed on the shell 1, and the inner side wall of the air inlet 2 extrudes the connecting rod 342, the connecting rod 342 drives the gear 343 to rotate, the gear 343 drives the rack 312 to move, the rack 312 drives the air inlet pipe 31 to extend from the inside of the protection pipe 35, the inner side wall of the air inlet 2 extrudes the connecting rod 342, so that the spring 341 is in a stretched state, when the cover 32 is separated from the protruding end of the air inlet 2, the spring 341 will automatically rebound and drive the connecting rod 342 to move, then the gear 343 drives the rack 312 to move, and then the air inlet pipe 31 is retracted into the protection pipe 35, thereby avoiding direct collision of the air inlet pipe 31 with the shell 1 when the air inlet pipe 31 is inserted, and prolonging the service life of the air inlet pipe 31.

[0037] The basic principle, main features and advantages of the utility model are shown and described above. It should be understood by those skilled in the art that the utility model is not limited by the above embodiments, and the above embodiments and the description in the specification are only to illustrate the principle of the utility model, and various changes and improvements can be made to the utility model without departing from the spirit and scope of the utility model, and these changes and improvements all fall within the scope of the utility model. The scope of protection of the utility model is defined by the appended claims and their equivalents.

Claims

1. An atmospheric reference microbar data acquisition processor comprising a housing (1) and an air intake assembly (3); characterised in that: The shell (1) bottom is provided with two air inlets (2), the air inlet assembly (3) includes an air inlet pipe (31), a sealing cover (32) and a protection pipe (35), one end of the protection pipe (35) is fixedly connected inside the sealing cover (32), four notches (33) are uniformly arranged on the side surface of the protection pipe (35), a sliding assembly (34) is installed inside the notches (33), a first fixed groove (38) is arranged below the notches (33), a first sealing ring (36) is installed inside the first fixed groove (38), two second fixed grooves (39) are arranged in parallel on the outer side surface of one end of the air inlet pipe (31), and a second sealing ring (37) is installed inside the second fixed grooves (39). The sliding assembly (34) includes a spring (341), a connecting rod (342) and a gear (343), one end of the spring (341) is fixedly connected to the inner wall of the notch (33), the other end is fixedly connected to the outer side surface of the connecting rod (342), and one end of the connecting rod (342) is provided with the gear (343).

2. The atmospheric reference microbar data acquisition processor of claim 1, wherein: The air inlet (2) is in the shape of a stepped shape, one end of the air inlet (2) protrudes from the shell (1), and an outer thread is arranged on the outer side surface of the protruding end of the air inlet (2).

3. The atmospheric reference microbar data acquisition processor of claim 1, wherein: The sealing cover (32) is provided with a through hole (321) and a second groove (322) inside, the center axes of the through hole (321) and the second groove (322) coincide, the diameter of the through hole (321) is smaller than that of the second groove (322), and the second groove (322) is provided with a thread inside.

4. The atmospheric reference microbar data acquisition processor of claim 1, wherein: The top end of the connecting rod (342) away from the air inlet pipe (31) is in a semispherical shape, the connecting rod (342) and the gear (343) are connected through a shaft, and the gear (343) is matched with a rack (312).

5. The atmospheric reference microbar data acquisition processor of claim 1, wherein: The air inlet pipe (31) is installed inside the protection pipe (35), and the protection pipe (35) and the sealing cover (32) are in interference fit.

6. The atmospheric reference microbar data acquisition processor of claim 1, wherein: The sealing cover (32) is matched with the protruding end of the air inlet (2), the protection pipe (35) is matched with the middle end of the air inlet (2), and the air inlet pipe (31) is matched with the bottom end of the air inlet (2).

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