CN218628759U - Pressure transmitter - Google Patents
Pressure transmitter Download PDFInfo
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- CN218628759U CN218628759U CN202222696246.XU CN202222696246U CN218628759U CN 218628759 U CN218628759 U CN 218628759U CN 202222696246 U CN202222696246 U CN 202222696246U CN 218628759 U CN218628759 U CN 218628759U
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- pressure transmitter
- mesochite
- piezoresistive sensor
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Abstract
The utility model discloses a pressure transmitter belongs to pressure transmitter technical field. The utility model provides a pressure transmitter, includes piezoresistive sensor and mesochite, the mesochite right-hand member connects soon through the screw thread and installs the end, piezoresistive sensor installs at the end inboard, the detection opening has been seted up to the end right-hand member, annular array's bypass passageway is seted up to inboard left part, the connection terminal is installed to the mesochite left end. The utility model discloses it is rational in infrastructure, the utility model discloses a holistic structure sets up, sets up the bypass passageway at pressure transmitter's detection open position, and the bypass passageway switches on through mesochite and air supply pipe, at long-time during operation, can be for detecting the opening air feed, and washing away from interior to exterior can wash out the debris of open position, avoids the opening to block up, uses in liquid easily by solid impurity jam detection opening, guarantees pressure transmitter's detection precision.
Description
Technical Field
The utility model relates to a pressure transmitter technical field, more specifically say, relate to a pressure transmitter.
Background
The pressure transmitter is mainly composed of a load cell sensor, a measurement circuit and a process connection piece. It can convert the physical pressure parameters sensed by the load cell sensor into standard electric signals for the secondary instruments such as indicating alarm, recorder and regulator to measure, indicate and regulate the process.
When the conventional pressure transmitter is used to detect liquid, the impurities in the liquid will cause solid impurities at the opening position of the transmitter to block, resulting in a small opening diameter and further affecting the detection accuracy of the pressure transmitter.
SUMMERY OF THE UTILITY MODEL
1. Technical problem to be solved
An object of the utility model is to provide a pressure transmitter to it uses the easy solid impurity of being blockked up detection open-ended problem in liquid to propose current pressure transmitter in solving above-mentioned background art.
2. Technical scheme
A pressure transmitter comprises a piezoresistive sensor and a middle shell, wherein an end socket is screwed at the right end of the middle shell through threads, the piezoresistive sensor is arranged on the inner side of the end socket, a detection opening is formed in the right end of the end socket, a bypass channel in an annular array is formed in the left part of the inner side, a wire holder is arranged at the left end of the middle shell, a sealing gasket is arranged between the wire holder and the middle shell in a compression joint mode, and an air supply pipe is arranged on the upper portion of the sealing gasket in a penetrating mode;
the mesochite and the end are used for sealing the inner space, the piezoresistive sensor is installed, the detection opening is formed, so that the detection end of the piezoresistive sensor can be in contact with the detected liquid, the mesochite can be supplied with air through the air pipe, the air is filled into the detection opening through the bypass channel, the detection opening can be flushed, the cleanness of the detection opening is guaranteed, solid sundries are prevented from being accumulated, the sealing gasket can be used for sealing the mesochite and the wire holder, and the sealing effect during air supply is guaranteed.
Preferably, the inner wall of the right part of the middle shell and the outer wall of the left step of the end head are respectively provided with an annular groove, and at least two sealing rings are embedded between the annular grooves;
the joint position of mesochite and end can be seted up annular groove, and then the installation sealing washer, can extrude deformation sealed, improves the inseparable degree of connection of joint position.
Preferably, a convex edge is arranged at the right edge of the sealing gasket, a lengthening sleeve is arranged in the middle of the sealing gasket, and a wire passing hole is formed in the middle of the lengthening sleeve;
the convex edge improves the contact area between the sealing gasket and the inner wall of the left part of the middle shell, the lengthening sleeve adopts transverse lengthening and is provided with a longer wire passing hole, and the contact area between the lengthening sleeve and the outer surface of the middle wire harness can be improved.
Preferably, the inner side of the bypass channel is provided with a one-way valve, the middle part of the left side of the end head is rotatably connected with a spinning sleeve through threads, and the piezoresistive sensor is arranged between the right end of the spinning sleeve and the inner wall of the right side of the end head;
the bypass channel conducts the middle shell and the detection opening, the check valve is arranged in the bypass channel, gas can only flow from the middle shell to the detection opening and cannot reversely flow, the piezoresistive sensor is installed in a compression joint mode, the middle shell and the detection opening can be prevented from being conducted from the piezoresistive sensor, and sealing is guaranteed.
Preferably, sliding connection seats are fixedly installed on the front inner wall and the rear inner wall of the middle shell, a circuit board is installed between the two sliding connection seats in a sliding mode, and the circuit board is electrically connected with the piezoresistive sensor through a wiring harness;
the opening of the sliding connection seat is right, the circuit board can be inserted into the middle shell leftwards, the sliding connection seat can extrude and guide the circuit board, position limitation is carried out, and stable installation is guaranteed.
Preferably, the left end of the spinning sleeve is provided with a pressing seat, the right end of the circuit board is inserted into the pressing seat, and the upper part of the pressing seat is screwed with a pressing bolt through a through screw hole;
the spinning sleeve can detachably fix the pressing seat, and after the wiring harness joint of the circuit board and the piezoresistive sensor is connected, the circuit board is inserted into the pressing seat and is pressed by the pressing bolt, so that the stable connection of the wiring harness joint is ensured.
Preferably, the right part of the outer side of the wire holder is provided with a hexagonal sleeve, and the middle part of the end head is embedded with a rubber ring;
the hexagonal sleeve is convenient for disassembling the wire holder, and the rubber ring can seal the installation joint when the end is installed.
3. Advantageous effects
Compared with the prior art, the utility model has the advantages of:
1. the utility model discloses a holistic structure setting sets up the bypass passageway at pressure transmitter's detection open position, and the bypass passageway switches on through mesochite and air supply pipe, and at long-time during operation, can be for detecting the opening air feed, from inside to outside erodees, can wash out open position's debris, avoids the opening to block up, uses easily in liquid to be blockked up the detection opening by solid impurity, guarantees pressure transmitter's detection precision.
2. The utility model discloses a holistic structure setting adopts split type integrated configuration, sets up special-shaped sealed pad in seam position, and sealed pad adopts multilayer redundant structure, can effectual improvement and the area of contact of casing, and then improves the sealed effect of seam position to the dismantlement is swift during the structure combination, and line position between circuit board and the sensor compresses tightly through the bolt, connects the inseparable degree of stable assurance combination.
Drawings
Fig. 1 is a left side schematic view of the overall structure of the present invention;
FIG. 2 is a sectional view of the whole structure of the present invention;
FIG. 3 is a schematic sectional view of the left structure of the present invention;
fig. 4 is a schematic diagram of the partial structure split of the present invention.
The reference numbers in the figures illustrate: a middle shell 1; a tip 2; a hexagonal sleeve 3; a wire holder 4; a gas supply pipe 5; a gasket 6; a circuit board 7; a pressing seat 8; a spinning sleeve 9; a seal ring 10; a piezoresistive sensor 11; a bypass passage 12; a rubber ring 13; a detection opening 14; a convex edge 15; an extension sleeve 16; a sliding connection seat 17.
Detailed Description
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.
In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted", "provided", "sleeved/connected", "connected", and the like are to be understood in a broad sense, 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 meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Referring to fig. 1-4, the present invention provides two technical solutions:
the first embodiment is as follows:
the utility model provides a pressure transmitter, includes piezoresistive sensor 11 and mesochite 1, 1 right-hand member of mesochite connects soon through the screw thread and installs end 2, and piezoresistive sensor 11 installs in 2 inboards of end, and 2 right-hand members in the end have seted up and have detected opening 14, and annular array's bypass passageway 12 is seted up to inboard left part, and connection terminal 4 is installed to 1 left end of mesochite, and sealed 6 of packing is installed in the crimping between connection terminal 4 and the mesochite 1, and sealed 6 upper portions of packing are run through and are installed air supply pipe 5.
Specifically, the annular grooves are respectively formed in the inner wall of the right part of the middle shell 1 and the outer wall of the step of the left part of the end head 2, the sealing rings 10 are embedded between the annular grooves, and the number of the sealing rings 10 is at least two.
Furthermore, the edge of the right side of the sealing gasket 6 is provided with a convex edge 15, the middle of the sealing gasket 6 is provided with a lengthening sleeve 16, and the middle of the lengthening sleeve 16 is provided with a wire passing hole.
It is worth to be noted that the inner side of the bypass channel 12 is provided with a one-way valve, the middle part of the left side of the end head 2 is provided with a spinning sleeve 9 in a screwing way through threads, and the piezoresistive sensor 11 is arranged between the right end of the spinning sleeve 9 and the inner wall of the right side of the end head 2.
The middle shell 1 and the end head 2 seal the inner space, the piezoresistive sensor 11 is installed, the detection opening 14 is formed to enable the detection end of the piezoresistive sensor 11 to be in contact with the detected liquid, the middle shell 1 can be supplied with air through the air pipe 5, the air is filled into the detection opening 14 through the bypass channel 12, the detection opening 14 can be washed away, the cleanness of the detection opening 14 is guaranteed, solid sundries are prevented from being accumulated, the sealing gasket 6 can seal the middle shell 1 and the wire holder 4, the sealing effect during air supply is guaranteed, an annular groove can be formed in the joint position of the middle shell 1 and the end head 2, the sealing ring 10 is further installed, compression deformation sealing can be conducted, the connection tightness of the joint position is improved, the contact area between the sealing gasket 6 and the inner wall of the left portion of the middle shell 1 is improved through the convex edge 15, the lengthened sleeve 16 is transversely lengthened, a longer wire hole is formed, the contact area of the outer surface of the middle shell 1 and the outer surface of the middle wire harness can be improved, the bypass channel 12 conducts the middle shell 1 and the detection opening 14, a one-way valve is installed in the bypass channel 12, the air can only flows from the middle shell 1 to the detection opening 14, and the pressure sensor can not be reversely conducted, and the detection opening 11 can be guaranteed, and the detection sensor 11 can be prevented.
The second embodiment:
the utility model provides a pressure transmitter, includes piezoresistive sensor 11 and mesochite 1, 1 right-hand member of mesochite connects soon through the screw thread and installs end 2, and piezoresistive sensor 11 installs in 2 inboards of end, and 2 right-hand members in the end have seted up and have detected opening 14, and annular array's bypass passageway 12 is seted up to inboard left part, and connection terminal 4 is installed to 1 left end of mesochite, and sealed 6 of packing is installed in the crimping between connection terminal 4 and the mesochite 1, and sealed 6 upper portions of packing are run through and are installed air supply pipe 5.
It is worth noting that sliding connection seats 17 are fixedly installed on the front inner wall and the rear inner wall of the middle shell 1, a circuit board 7 is installed between the two sliding connection seats 17 in a sliding mode, and the circuit board 7 is electrically connected with the piezoresistive sensor 11 through a wire harness.
Besides, the left end of the spinning sleeve 9 is provided with the pressing seat 8, the right end of the circuit board 7 is inserted into the pressing seat 8, and the upper part of the pressing seat 8 is screwed with a pressing bolt through a penetrating screw hole.
It has to be said that the right part of the outer side of the wire holder 4 is provided with the hexagonal sleeve 3, and the middle part of the end head 2 is embedded with the rubber ring 13.
The circuit board 7 and the piezoresistive sensor 11 involved in the two embodiments are the existing products purchased in the market, and the control system, the electromagnetic switch and the circuit pipeline which are matched with the existing products can also be provided by the manufacturer, besides, the utility model discloses in involve that power module, circuit and electronic components and control module are prior art, the technical personnel in the field can realize completely, need not to be beyond a limit, the utility model discloses the content of protection also does not relate to the improvement to inner structure and method.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It should be understood by those skilled in the art that the present invention is not limited by the above embodiments, and the description in the above embodiments and the description is only preferred examples of the present invention, and is not intended to limit the present invention, and that the present invention can have various changes and modifications without departing from the spirit and scope of the present invention, and these changes and modifications all fall into the scope of the claimed invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (7)
1. A pressure transmitter comprising a piezoresistive sensor (11) and a mid-shell (1), characterized in that: connect soon through the screw thread and install end (2) mesochite (1) right-hand member, install in end (2) inboardly piezoresistive sensor (11), detection opening (14) have been seted up to end (2) right-hand member, circular array's bypass passageway (12) have been seted up to the inboard left part, connection terminal (4) are installed to mesochite (1) left end, sealed pad (6) are installed in the crimping between connection terminal (4) and mesochite (1), sealed pad (6) upper portion is run through and is installed air supply pipe (5).
2. A pressure transmitter as claimed in claim 1, characterized in that: annular grooves are formed in the inner wall of the right portion of the middle shell (1) and the outer wall of the step of the left portion of the end socket (2) respectively, sealing rings (10) are embedded between the annular grooves, and the number of the sealing rings (10) is at least two.
3. A pressure transmitter as claimed in claim 2, wherein: the edge of the right side of the sealing gasket (6) is provided with a convex edge (15), the middle of the sealing gasket (6) is provided with an extension sleeve (16), and the middle of the extension sleeve (16) is provided with a wire passing hole.
4. A pressure transmitter according to claim 3, wherein: the inner side of the bypass channel (12) is provided with a one-way valve, the middle part of the left side of the end head (2) is provided with a spinning sleeve (9) in a screwing manner through threads, and the piezoresistive sensor (11) is arranged between the right end of the spinning sleeve (9) and the inner wall of the right side of the end head (2).
5. A pressure transmitter according to claim 4, wherein: inner wall fixed mounting has sliding connection seat (17) around mesochite (1), two sliding connection installs circuit board (7) between sliding connection seat (17), circuit board (7) are through pencil and piezoresistive sensor (11) electric connection.
6. A pressure transmitter as claimed in claim 5, wherein: the left end of the spinning sleeve (9) is provided with a pressing seat (8), the right end of the circuit board (7) is inserted into the pressing seat (8), and the upper part of the pressing seat (8) is screwed with a pressing bolt through a through screw hole.
7. A pressure transmitter as claimed in claim 6, wherein: hexagonal cover (3) are installed to wire holder (4) outside right part, end (2) middle part inlays to establish and installs rubber ring (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222696246.XU CN218628759U (en) | 2022-10-13 | 2022-10-13 | Pressure transmitter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222696246.XU CN218628759U (en) | 2022-10-13 | 2022-10-13 | Pressure transmitter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218628759U true CN218628759U (en) | 2023-03-14 |
Family
ID=85470348
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222696246.XU Active CN218628759U (en) | 2022-10-13 | 2022-10-13 | Pressure transmitter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218628759U (en) |
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2022
- 2022-10-13 CN CN202222696246.XU patent/CN218628759U/en active Active
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