High-precision pressure transmitter

Abstract

The utility model discloses a high-precision pressure transmitter which comprises a base, a shell is arranged at the upper end of the base, two symmetrically distributed sliding grooves are formed in the middle of the outer surface of the shell, and the high-precision pressure transmitter further comprises a quick release mechanism. The quick release mechanism comprises a sliding seat, sliding blocks, circular sliding grooves, a limiting seat, a limiting block, a limiting groove, a step surface and a filtering piece, the two symmetrically-distributed sliding blocks are arranged on the inner wall of the sliding seat, the sliding blocks are slidably connected to the interiors of the sliding grooves adjacent in the radial direction, the circular sliding grooves are formed in the lower end of the sliding seat, and the limiting seat is slidably connected to the lower ends of the circular sliding grooves; two symmetrically distributed limiting blocks are arranged at the lower end of the inner wall of the limiting seat, symmetrically distributed limiting grooves are formed in the lower end of the outer surface of the shell, and the limiting blocks are slidably connected to the interiors of the limiting grooves. And the condition that impurities in water are attached to the surface of the filter to cause blockage of the shell and influence the use is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to pressure transmitter technical field, concretely is a kind of high-precision pressure transmitter. BACKGROUND

[0002] High-precision pressure transmitter is a kind of equipment that converts pressure signal into standard electric signal, is widely used in industrial automation and process control, it realizes high-precision pressure measurement by advanced capacitive technology and digitization compensation technology, usually output signal is 4-20 milliamperes (4-20mA) direct current;

[0003] Prior art: the patent with authorized publication number CN206627245U discloses a kind of high-precision pressure transmitter, it at least includes meter head, display screen on meter head and wiring end, its characterized in that: meter head is further connected with liquid inlet sleeve, liquid inlet sleeve one end is connected with meter head, the other end is connecting flange, pressure sensor is arranged in the liquid inlet sleeve located at meter head end, filter equipment is further connected on liquid inlet sleeve;

[0004] This kind of high-precision pressure transmitter has the following shortcomings: the impurities in water are filtered by multiple different diameter filter layers to prevent the impurities in water from affecting pressure detection, but the fixedly arranged filter layer cannot be disassembled, which can cause impurities to adhere and accumulate on the surface of filter layer or between two filter layers, thereby causing liquid inlet sleeve to be blocked, affecting the use of pressure transmitter, therefore, we propose a kind of high-precision pressure transmitter. UTILITY MODEL CONTENT

[0005] The technical problem to be solved by the utility model is to overcome the defects of the prior art, provide a kind of high-precision pressure transmitter, filter sheet is convenient to disassemble, facilitate cleaning, avoid the situation that shell is blocked and affects use due to the impurities in water adhering on the surface of filter sheet, can effectively solve the problems in the background art.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a kind of high-precision pressure transmitter, including base, the upper end of the base is provided with shell, the outer surface middle part of shell is equipped with two symmetrical distribution's sliding slot, still include quick release mechanism;

[0007] The quick release mechanism comprises a sliding seat, a sliding block, a circular sliding groove, a limiting seat, a limiting block, a limiting groove, a stepped surface and a filter piece, the inner wall of the sliding seat is provided with two symmetrically distributed sliding blocks, the sliding blocks are all slidingly connected to the inside of the radially adjacent sliding grooves, the lower end of the sliding seat is provided with a circular sliding groove, the lower end of the circular sliding groove is slidingly connected to the limiting seat, the inner wall of the limiting seat is provided with two symmetrically distributed limiting blocks at the lower end, the outer surface of the shell is provided with symmetrically distributed limiting grooves at the lower end, the limiting blocks are all slidingly connected to the inside of the limiting grooves, the inner wall of the shell is provided with a stepped surface at the lower end, and the stepped surface is provided with a filter piece in the inside, the filter piece is convenient to disassemble, convenient to clean, and the situation that the shell is blocked and use is affected due to impurities in water adhering to the surface of the filter piece is avoided.

[0008] Further, the quick release mechanism further comprises a spring, the spring is arranged between the upper end of the sliding seat and the lower end of the shell, and the spring is sleeved on the outer surface of the shell to provide a rebound force for the sliding seat.

[0009] Further, the inner wall of the shell is provided with a pressure sensor at the upper end, the input end of the pressure sensor is electrically connected to an external power supply, and the pressure is detected.

[0010] Further, the front side wall of the stepped surface of the upper end of the shell is provided with a signal converter in the middle, the input end of the signal converter is electrically connected to the output end of the pressure sensor, and the signal is converted.

[0011] Further, the rear side wall of the stepped surface of the upper end of the shell is provided with a signal amplifier in the middle, the input end of the signal amplifier is electrically connected to the output end of the signal converter, and the signal is amplified.

[0012] Further, the front side of the upper end of the shell is provided with a display screen, the input end of the display screen is electrically connected to the output end of the signal amplifier, and the current water pressure is displayed.

[0013] Further, the inner wall of the sliding seat is provided with a sealing gasket at the front side, and the water flow is prevented from flowing out.

[0014] Compared with the prior art, the high-precision pressure transmitter has the following advantages:

[0015] The filter piece is convenient to disassemble, convenient to clean, and the situation that the shell is blocked and use is affected due to impurities in water adhering to the surface of the filter piece is avoided. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a structural schematic view of the utility model;

[0017] Figure 2 It is a structural schematic view of the quick release mechanism of the utility model;

[0018] Figure 3The sectional view structure schematic view of the utility model;

[0019] Figure 4 The structure schematic view of the utility model A place amplification;

[0020] Figure 5 The structure schematic view of the utility model quick release mechanism;

[0021] Figure 6 The filter piece structure schematic view of the utility model;

[0022] Figure 7 The local structure schematic view of the utility model quick release mechanism.

[0023] In the drawing: 1 base, 2 shell, 3 display screen, 4 sliding slot, 5 pressure sensor, 6 quick release mechanism, 61 sliding seat, 62 spring, 63 sliding block, 64 round sliding slot, 65 limiting seat, 66 limiting block, 67 limiting slot, 68 step surface, 69 filter piece, 7 signal converter, 8 sealing gasket, 9 signal amplifier. DETAILED DESCRIPTION

[0024] The technical schemes in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0025] Please refer to Figures 1-7The embodiment provides a technical scheme: a high-precision pressure transmitter, which comprises a base 1, the upper end of the base 1 is provided with a shell 2, two symmetrically distributed sliding grooves 4 are formed in the middle of the outer surface of the shell 2, and a quick release mechanism 6 is further included, the inner wall of the shell 2 is provided with a pressure sensor 5 at the upper end, the input end of the pressure sensor 5 is electrically connected with an external power supply, the front side wall of the stepped surface of the upper end of the shell 2 is provided with a signal converter 7 in the middle, the input end of the signal converter 7 is electrically connected with the output end of the pressure sensor 5, the rear side wall of the stepped surface of the upper end of the shell 2 is provided with a signal amplifier 9 in the middle, the input end of the signal amplifier 9 is electrically connected with the output end of the signal converter 7, the front side of the upper end of the shell 2 is provided with a display screen 3, the input end of the display screen 3 is electrically connected with the output end of the signal amplifier 9, the inner wall of the sliding seat 61 is provided with a sealing gasket 8 at the front side, the sealing gasket 8 is a rubber sealing gasket, the sealing property of the connecting part is ensured, the base 1 needs to be fixed on the upper end of the flange plate of the water pipe through the mounting hole of the base 1 by external bolts first, then the pressure sensor 5 is connected with the external power supply, at this time, the pressure transmission can be carried out, in the process of pressure transmission, when the water flows through the water pipe, the water enters the inside of the shell 2 and contacts the pressure sensor 5, the pressure sensor 5 detects the water pressure and transmits information to the signal converter 7, the signal converter 7 converts the analog signal into a digital signal and transmits the digital signal to the signal amplifier 9, the signal amplifier 9 amplifies the signal to a commonly used frequency range and transmits the signal to the display screen 3, and the display screen 3 displays the current pressure information;

[0026] The quick release mechanism 6 comprises a sliding seat 61, a sliding block 63, a circular sliding groove 64, a limiting seat 65, a limiting block 66, a limiting groove 67, a stepped surface 68 and a filter piece 69, the inner wall of the sliding seat 61 is provided with two symmetrically distributed sliding blocks 63, the sliding blocks 63 are both slidingly connected to the inside of the radially adjacent sliding groove 4, the lower end of the sliding seat 61 is provided with the circular sliding groove 64, the lower end of the circular sliding groove 64 is slidingly connected to the limiting seat 65, the inner wall of the limiting seat 65 is provided with two symmetrically distributed limiting blocks 66 at the lower end, the outer surface of the shell 2 is provided with symmetrically distributed limiting grooves 67 at the lower end, the limiting blocks 66 are both slidingly connected to the inside of the limiting groove 67, the inner wall of the shell 2 is provided with the stepped surface 68 at the lower end, the stepped surface 68 is provided with the filter piece 69 in the inside, the quick release mechanism 6 further comprises a spring 62, the spring 62 is arranged between the upper end of the sliding seat 61 and the lower end of the shell 2, the spring 62 is sleeved on the outer surface of the shell 2, after a period of time, the limiting seat 65 can be counterclockwise rotated, the limiting seat 65 drives the limiting block 66 to slide along the limiting groove 67, since the limiting groove 67 is an L-shaped limiting groove, after being rotated, the limiting block 66 is transferred from the horizontal slot of the limiting groove 67 to the vertical slot, thereby releasing the limiting of the limiting seat 65, then the sliding seat 61 is pulled upwards, the sliding seat 61 drives the limiting seat 65 to slide upwards along the sliding groove 4 and extrudes the spring 62 to make it contract, thereby making the filter piece 69 exposed, after the filter piece 69 is taken out and cleaned, it can be installed into the stepped surface 68, then the sliding seat 61 is loosened, the sliding seat 61 drives the limiting seat 65 to reset under the action force of the spring 62, then the limiting seat 65 is clockwise rotated, the limiting block 66 is transferred to the horizontal slot of the L-shaped limiting groove, thereby realizing the limiting of the limiting seat 65, the filter piece 69 is convenient to disassemble and clean, and the situation that the shell is blocked due to the impurities in the water adhering to the surface of the filter piece 69 is avoided.

[0027] The working principle of the high-precision pressure transmitter is as follows: during pressure transmission, the base 1 is first fixed on the flange plate upper end of the water pipe, then the pressure sensor 5 is connected to the external power supply, at this time, the pressure transmission can be carried out, in the process of pressure transmission, when the water flows through the water pipe, it will enter the inside of the shell 2 and contact the pressure sensor 5, the pressure sensor 5 detects the water pressure and transmits information to the signal converter 7, the signal converter 7 converts the analog signal into a digital signal and transmits it to the signal amplifier 9, the signal amplifier 9 amplifies the signal to a commonly used frequency range and transmits it to the display screen 3, and the display screen 3 displays the current pressure information, after a period of time, the limiting seat 65 can be counterclockwise rotated, the limiting seat 65 drives the limiting block 66 to slide along the plane groove of the limiting groove 67, since the limiting groove 67 is an L-shaped limiting groove, after rotation, the limiting block 66 is transferred from the horizontal groove of the limiting groove 67 to the lower end of the vertical groove, thereby releasing the vertical limiting of the limiting seat 65, then the sliding seat 61 is pulled upwards, the sliding seat 61 drives the limiting seat 65 to slide upwards along the sliding groove 4 and extrudes the spring 62 to make it contract, thereby making the filter disc 69 exposed from the arc-shaped mounting port of the shell 2, (the arc length of the arc-shaped mounting port is greater than half the circumference of the circle where the pipe body at the lower end of the shell 2 is located, the diameter of the stepped surface 68 is greater than the inner diameter of the pipe body at the lower end of the shell 2, and the diameter of the filter disc 69 is the same as that of the stepped surface 68), the filter disc 69 can be taken out, cleaned and then loaded into the stepped surface 68, then the sliding seat 61 is loosened, the sliding seat 61 drives the limiting seat 65 to reset under the action force of the spring 62, then the limiting seat 65 is rotated clockwise, and the limiting block 66 is transferred to the horizontal groove of the L-shaped limiting groove, so that the limiting of the limiting seat 65 is realized, (when the filter disc 69 is inserted into the stepped surface 68, the inner arc surface of the sliding seat 61 can well contact and limit the filter disc 69).

[0028] It is worth noting that the pressure sensor 5 disclosed in the above embodiment can be selected from LY20 series, the signal amplifier 9 can be selected from AD706JRZ, the signal converter 7 can be selected from WP-9015, and the display screen 3 can be freely configured according to the actual application scene.

[0029] The above is only an embodiment of the utility model, and does not limit the patent range of the utility model, and any equivalent structure or equivalent process conversion by using the utility model specification and drawing contents, or direct or indirect application in other related technical fields, are also included in the patent protection range of the utility model.

Claims

1. A high-precision pressure transmitter, comprising a base (1), the upper end of the base (1) is provided with a shell (2), the middle of the outer surface of the shell (2) is provided with two symmetrically distributed sliding grooves (4), characterized in that: Also include quick release mechanism (6); The quick release mechanism (6) comprises a sliding seat (61), a sliding block (63), a circular sliding groove (64), a limiting seat (65), a limiting block (66), a limiting groove (67), a stepped surface (68) and a filter piece (69), the inner wall of the sliding seat (61) is provided with two symmetrically distributed sliding blocks (63), the sliding blocks (63) are all slidingly connected to the interiors of the radially adjacent sliding grooves (4), the lower end of the sliding seat (61) is provided with a circular sliding groove (64), the lower end of the circular sliding groove (64) is slidingly connected to the limiting seat (65), the inner wall of the limiting seat (65) is provided with two symmetrically distributed limiting blocks (66) at the lower end, the outer surface of the shell (2) is provided with symmetrically distributed limiting grooves (67) at the lower end, the limiting blocks (66) are all slidingly connected to the interiors of the limiting grooves (67), the inner wall of the shell (2) is provided with a stepped surface (68) at the lower end, and the stepped surface (68) is provided with a filter piece (69) in the interior.

2. A high accuracy pressure transmitter as claimed in claim 1, wherein: The quick release mechanism (6) further comprises a spring (62), the spring (62) is arranged between the upper end of the sliding seat (61) and the lower end of the shell (2), and the spring (62) is sleeved on the outer surface of the shell (2).

3. The high accuracy pressure transmitter of claim 1, wherein: The inner wall of the shell (2) is provided with a pressure sensor (5) at the upper end, and the input end of the pressure sensor (5) is electrically connected with an external power supply.

4. A high accuracy pressure transmitter as claimed in claim 3, wherein: The front side wall of the stepped surface of the upper end of the shell (2) is provided with a signal converter (7) in the middle, and the input end of the signal converter (7) is electrically connected with the output end of the pressure sensor (5).

5. A high accuracy pressure transmitter as claimed in claim 4, characterized in that: The rear side wall of the stepped surface of the upper end of the shell (2) is provided with a signal amplifier (9) in the middle, and the input end of the signal amplifier (9) is electrically connected with the output end of the signal converter (7).

6. A high accuracy pressure transmitter as claimed in claim 5, characterized in that: The front side of the upper end of the shell (2) is provided with a display screen (3), and the input end of the display screen (3) is electrically connected with the output end of the signal amplifier (9).

7. A high accuracy pressure transmitter as claimed in claim 1, wherein: The inner wall of the sliding seat (61) is provided with a sealing gasket (8) on the front side.

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