CN209372186U - A kind of radio-frequency capacity level switch structure - Google Patents
A kind of radio-frequency capacity level switch structure Download PDFInfo
- Publication number
- CN209372186U CN209372186U CN201920180458.8U CN201920180458U CN209372186U CN 209372186 U CN209372186 U CN 209372186U CN 201920180458 U CN201920180458 U CN 201920180458U CN 209372186 U CN209372186 U CN 209372186U
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- shell
- radio
- circuit board
- level switch
- capacity level
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Abstract
A kind of radio-frequency capacity level switch structure, including circuit board, shell, shield, inductive head, stringing end and ground loop, it is characterized in that the shell is set as hollow cylindrical structure, the top and bottom of shell are respectively arranged with internal screw thread, the circuit board is set as rectangle structure, the ground loop setting is on circuit boards, one end of circuit board is arranged in the inductive head, ground loop and shell connect, the shield is connected by screw thread with the lower end of shell, and the stringing end is connected by screw thread with the upper end of shell；Overall structure is smaller, is more suitable for the compact occasion of installation space, can be applied in the vacuum excrement collector system of car and boat lavatory, and stability is strong, easy for installation, safeguards simpler.
Description
Technical field
The utility model relates to level switch technical field more particularly to a kind of radio-frequency capacity level switch structures.
Background technique
Level gauging is often referred to the height to material in closed in industrial processes or open container (solid or liquid level)
Degree is detected；It is continuously detected if it is to height of materials, referred to as continuous measurement.If only whether arrived to height of materials
Referred to as limit measurement is detected up to a certain position.The instrument for completing this measurement task is called level meter.Level switch undertakes
The switch control of level measurement instrument (level meter), can not show and measure level height, so level switch belongs to level
A part of electronic component of meter.
Radio-frequency capacitive material location switch is a kind of novel level meter.Due to using " radio-frequency technique " and " number
Word calibration technique ", solves that the temperature drift in use of capacitance level switches for a long time is big, is not easy two hang-ups demarcated.It is former
Reason: sensing probe is installed on the side wall in the top of the warehouse or storehouse, and a capacitor is formed between rapier and bulkhead.Medium when hole capital after selling all securities
For air, when material, which rises to, buries rapier, the dielectric constant between rapier and bulkhead changes capacitance and increases.Electronic circuit handle
The increase of this capacitance detected and export a switching value for alarming or controlling.It is applicable in: high temperature, high viscosity, corrosion
Property liquid.Powdery, granular solids, medium-grained block material.The radio-frequency capacitive material location switch body of the prior art
Type is larger, difficult to install in the occasion of spaces compact.
Summary of the invention
To solve the above-mentioned problems, the utility model provides a kind of radio-frequency capacity level switch structure, provides one kind
The higher radio-frequency capacity level switch of more compact structure, stability.To achieve the above object, the technology that the utility model is taken
Scheme are as follows: a kind of radio-frequency capacity level switch structure, including circuit board, shell, shield, inductive head, stringing end and ground connection
Ring, the shell are set as hollow cylindrical structure, and the top and bottom of shell are respectively arranged with internal screw thread, the electricity
Road plate is set as rectangle structure, and on circuit boards, the one of circuit board is arranged in the inductive head for the ground loop setting
End, ground loop and shell connect, and the shield is connected by screw thread with the lower end of shell, and the stringing end is logical
Screw thread is crossed to be connected with the upper end of shell.
Further, visual window is additionally provided on stringing end, the visual window is set as convex structure.
Further, external screw thread is additionally provided in the middle part of shell.
Further, inductive head is set as the cylindrical structure that top is fillet, it is preferred that inductive head selects PEEK modeling
Material, inductive head property are stablized, and heatproof and mechanical stability are strong.
Further, shield is set as paraboloid structure.
Further, ground loop is provided in round structure, and ground loop is symmetrically arranged with 4 anti-skidding haptic elements.
Compared with prior art, the utility model has the following beneficial effects: overall structure is smaller, it is empty to be more suitable for installation
Between compact occasion, can be applied in the vacuum excrement collector system of car and boat lavatory, stability is strong, easy for installation, safeguards simpler
It is single.
Detailed description of the invention
The utility model is described in further detail below in conjunction with attached drawing.
Attached drawing 1 is the structural schematic diagram outside the utility model；
Attached drawing 2 is the structural schematic diagram inside the utility model；
Attached drawing 3 is the right side structural representation at stringing end；
Attached drawing 4 is the structural schematic diagram of ground loop；
In attached drawing: 1, shell, 2, shield, 3, stringing end, 31, visual window, 4, circuit board, 5, inductive head, 6, ground loop,
61, anti-skidding haptic element.
Specific embodiment
In order to enable those skilled in the art to better understand the technical solutions of the present invention, 1, attached drawing with reference to the accompanying drawing
2, attached drawing 3, attached drawing 4 and specific embodiment are further described the utility model.
As shown in attached drawing 1, attached drawing 2, a kind of radio-frequency capacity level switch structure, including shell 1, shield 2, stringing end
3, circuit board 4, inductive head 5 and ground loop 6, the shell 1 are set as hollow cylindrical structure, and the upper end of shell 1 is under
End is respectively arranged with internal screw thread, and the circuit board 4 is set as rectangle structure, and circuit board 4 is arranged in the ground loop 6
One end of circuit board 4, the inner wall contact connectio of ground loop 6 and shell 1, the protection is arranged in middle part, the inductive head 5
Cover 2 is connected by screw thread with the lower end of shell 1, and the stringing end 3 is connected by screw thread with the upper end of shell 1.
Further, the thickness of circuit board 4 is set as 2mm, and circuit board 4 includes 4 laminates, material FR4, upper lower outer portion two
Layer is set as signals layer, and internal outer layer is respectively set to bus plane and ground plane layer.
Further, as shown in Fig. 3, visual window 31 is additionally provided on stringing end 3, the visual window 31 is set as round
Arc structure checks more convenient.
Further, the middle part of shell 1 is additionally provided with external screw thread, easier for installation.
Further, inductive head 5 is set as the cylindrical structure that top is fillet, it is preferred that inductive head 5 selects PEEK modeling
Material, 5 property of inductive head are stablized, and heatproof and mechanical stability are strong.
Further, shield 2 is set as paraboloid structure.
Further, as shown in Fig. 4, ground loop 6 is provided in round structure, and ground loop 6 is symmetrically arranged with 4 anti-wipings
Foot 61.
The working principle and the course of work of the utility model are as follows: in use, circuit board 4 is put into shell 1, anti-skidding haptic element
61 fix circuit board 4, screw on shield 2 and stringing end 3 respectively in the lower end of shell 1 and top；When installation, pass through shell
1 external screw thread is mounted on designated position, and dismounting is more convenient.Overall structure is smaller, and stability is high, narrow suitable for installation space
Occasion.
Compared with prior art, the utility model has the following beneficial effects: overall structure is smaller, it is empty to be more suitable for installation
Between compact occasion, can be applied in the vacuum excrement collector system of car and boat lavatory, stability is strong, easy for installation, safeguards simpler
It is single.
Using technical solution described in the utility model or those skilled in the art in technical solutions of the utility model
Under inspiration, similar technical solution is designed, and reaches above-mentioned technical effect, is the protection model for falling into the utility model
It encloses.
Claims (7)
1. a kind of radio-frequency capacity level switch structure, including shell (1), shield (2), stringing end (3), circuit board (4), sense
Head (5) and ground loop (6) are answered, it is characterized in that the shell (1) is set as hollow cylindrical structure, the upper end of shell (1)
It is respectively arranged with internal screw thread with lower end, the circuit board (4) is set as rectangle structure, and the ground loop (6) setting exists
The middle part of circuit board (4), the inductive head (5) are arranged in one end of circuit board (4), the inner wall of ground loop (6) and shell (1)
It connects, the shield (2) is connected by screw thread with the lower end of shell (1), and the stringing end (3) passes through screw thread
It is connected with the upper end of shell (1).
2. radio-frequency capacity level switch structure according to claim 1, it is characterized in that the thickness of circuit board (4) is set as
2mm, circuit board (4) include 4 laminates, and upper and lower outer two layers are set as signals layer, and internal outer layer is respectively set to bus plane and ground
Plane layer.
3. radio-frequency capacity level switch structure according to claim 1, it is characterized in that being provided on stringing end (3) visual
Window (31), the visual window (31) are set as convex structure.
4. radio-frequency capacity level switch structure according to claim 1, it is characterized in that being provided in the middle part of shell (1) outer
Screw thread.
5. radio-frequency capacity level switch structure according to claim 1, it is characterized in that inductive head (5) is set as top is
The cylindrical structure of fillet.
6. radio-frequency capacity level switch structure according to claim 1, it is characterized in that shield (2) is set as paraboloid
Structure.
7. radio-frequency capacity level switch structure according to claim 1, it is characterized in that ground loop (6) is provided in round knot
Structure, ground loop (6) are symmetrically arranged with 4 anti-skidding haptic elements (61).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920180458.8U CN209372186U (en) | 2019-02-01 | 2019-02-01 | A kind of radio-frequency capacity level switch structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920180458.8U CN209372186U (en) | 2019-02-01 | 2019-02-01 | A kind of radio-frequency capacity level switch structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209372186U true CN209372186U (en) | 2019-09-10 |
Family
ID=67827211
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920180458.8U Active CN209372186U (en) | 2019-02-01 | 2019-02-01 | A kind of radio-frequency capacity level switch structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209372186U (en) |
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2019
- 2019-02-01 CN CN201920180458.8U patent/CN209372186U/en active Active
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