CN216925719U

CN216925719U - Split liquid level switch

Info

Publication number: CN216925719U
Application number: CN202220357739.8U
Authority: CN
Inventors: 刘强; 卢艳; 杨景欣; 陈婷; 张琳; 林冠金; 周鹏; 张勃; 林祥华; 钟嘉伟
Original assignee: Guangdong Tongdi Technology Co ltd; Guangdong Shunde Industrial Design Institute
Current assignee: Guangdong Tongdi Technology Co ltd; Guangdong Shunde Industrial Design Institute
Priority date: 2022-02-22
Filing date: 2022-02-22
Publication date: 2022-07-08
Anticipated expiration: 2032-02-22

Abstract

The utility model relates to a split type liquid level switch, which comprises a clamping piece and an induction piece, wherein a clamping cavity is formed in the clamping piece, a contact bulge is arranged in the clamping cavity, and the clamping piece is used for clamping a nonmetal container; one end of the sensing piece can be arranged in the clamping cavity, the sensing piece can be electrically connected with the contact protrusion, and the sensing piece and the contact protrusion are used for forming one electrode of the capacitor structure. The clamping piece and the sensing piece are of a separated structure and are in contact with the sensing piece through the contact bulge to form a complete capacitor structure. The position of the liquid level switch can be conveniently adjusted. Simultaneously, the water-proof anti-corrosion paint can be used for the outer wall of a non-metal container without being in direct contact with liquid, cannot be corroded by corrosive liquid such as strong acid, strong alkali and the like, and is not influenced by water scales or other impurities. Can penetrate various containers made of nonmetal materials, such as containers made of plastics, glass, ceramics and the like; liquid, powder, particulate matter all can detect, have improved split type liquid level switch's practicality and convenience.

Description

Split liquid level switch

Technical Field

The utility model relates to the technical field of liquid level detection, in particular to a split type liquid level switch.

Background

The liquid level switch is also called a water level switch or a liquid level sensor and is a switch for controlling the liquid level. The form is largely classified into a contact type and a non-contact type. The commonly used non-contact switch is a capacitance type liquid level switch, and the contact type floating ball type liquid level switch is most widely applied. The electrode type liquid level switch, the electronic type liquid level switch and the capacitance type liquid level switch can also be realized by adopting a contact type method. In the prior art, the sensing part and the control circuit part of the liquid level switch are integrated. Is not convenient for the production and assembly of medical consumable products.

SUMMERY OF THE UTILITY MODEL

In view of the above, there is a need to provide a split level switch that is easy to adjust and replace.

A split type liquid level switch comprises a clamping piece and an induction piece, wherein a clamping cavity is formed in the clamping piece, a contact bulge is arranged in the clamping cavity, and the clamping piece is used for clamping a non-metal container; one end part of the sensing piece can be arranged in the clamping cavity, the sensing piece can be electrically connected with the contact protrusion, and the sensing piece and the contact protrusion are used for forming one electrode of the capacitor structure.

In one embodiment, the split liquid level switch further comprises a housing, the housing is provided with a containing cavity, the sensing element is arranged in the containing cavity, the housing is further provided with a connecting port, the connecting port is communicated with the containing cavity, and the contact protrusion is connected with the sensing element through the connecting port.

In one embodiment, the housing is a non-metallic piece.

In one embodiment, the clamping cavity is further provided with a positioning groove, the shell is further provided with a positioning bulge, and the positioning bulge can be clamped in the positioning groove.

In one embodiment, the number of the positioning protrusions is at least two, two adjacent positioning protrusions are arranged at intervals, and at least two positioning protrusions can be clamped in the positioning groove.

In one embodiment, the positioning protrusion has a trapezoidal shape.

In one embodiment, the shape of the sensing element is "L" or "J".

In one embodiment, the housing is "L" or "J" shaped.

In one embodiment, the split liquid level switch further comprises a circuit board, the circuit board is arranged in the clamping cavity, the contact protrusion is arranged on the circuit board, the contact protrusion and the sensing element are in contact to generate an electric signal, and the circuit board can transmit the electric signal of the contact protrusion.

In one embodiment, the split liquid level switch further comprises a controller, the circuit board is electrically connected with the controller through a communication line or a wireless transmission module, and the controller can convert an electric signal of the circuit board into a digital signal.

In one embodiment, the split liquid level switch further comprises an indicator light, the indicator light is electrically connected with the circuit board, and the electric signal on the circuit board can control the indicator light to be turned on or turned off.

In one embodiment, the clamp is a spring clamp.

In one embodiment, an anti-slip layer is arranged in the clamping cavity.

Above-mentioned split type liquid level switch, holder and response piece are the disconnect-type structure, and both form complete electric capacity structure through touching protruding and response piece contact. The position adjustment of the liquid level switch is convenient. Whether there is liquid to detect with the inductive capacitance of water, when there is not liquid to be close to the response piece, split type liquid level switch has certain static electric capacity to ground, when the liquid level slowly risees and is close to the response piece, the parasitic capacitance of liquid will be coupled to this static electric capacity, make liquid level switch's capacitance value grow, the signal of telecommunication or the electric capacity signal of this change input the controller again and carry out signal conversion, convert the electric capacity of change into the change amount of digital signal or certain electric signal, detect and judge the degree of this change amount by certain algorithm again, just think the liquid level reaches the induction point when this change amount exceeds certain threshold value.

The split type liquid level switch is a non-contact type liquid level switch. Can be used for the outer wall of a non-metal container without being in direct contact with liquid, cannot be corroded by corrosive liquids such as strong acid, strong alkali and the like, and is not influenced by water scales or other impurities. Containers capable of penetrating various non-metallic materials, such as plastic, glass, ceramic and the like; liquid, powder, particulate matter all can detect, have improved split type level switch's practicality and convenience.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the utility model and, together with the description, serve to explain the utility model and not to limit the utility model.

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a split liquid level switch in an embodiment.

The elements in the figure are labeled as follows:

10. a split type liquid level switch; 100. a clamping member; 200. a sensing member; 300. a communication line; 400. and an indicator light.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

Referring to fig. 1, the split liquid level switch 10 in an embodiment includes a clamping member 100 and a sensing member 200, wherein a clamping cavity is formed in the clamping member 100, a contact protrusion is arranged in the clamping cavity, and the clamping member 100 is used for clamping on a non-metal container; one end of the sensing element 200 can be disposed in the clamping cavity, the sensing element 200 can be electrically connected to the contact protrusion, and the sensing element 200 and the contact protrusion are used to form one of the electrodes of the capacitor structure.

The clamping member 100 and the sensing member 200 are separated structures, and the clamping member and the sensing member are contacted with the sensing member 200 through the contact protrusion to form a complete capacitor structure. The position of the liquid level switch can be conveniently adjusted. Whether there is liquid to detect with the inductive capacitance of water, when there is no liquid to be close to the inductor 200, split type liquid level switch 10 has certain static capacitance to ground, when the liquid level slowly rises to be close to the inductor 200, the parasitic capacitance of liquid will couple to this static capacitance, make the capacitance value of liquid level switch grow, the signal or capacitance signal of this change input the controller again and carry out signal conversion, convert the capacitance of change into the change volume of digital signal or certain electric signal, detect and judge the degree of this change volume by certain algorithm again, just think the liquid level reaches the induction point when this change volume exceeds certain threshold value.

The split level switch 10 is a non-contact level switch. Can be used for the outer wall of a non-metal container without directly contacting with liquid, can not be corroded by corrosive liquids such as strong acid, strong alkali and the like, and can not be influenced by water scales or other impurities. Containers capable of penetrating various non-metallic materials, such as plastic, glass, ceramic and the like; liquid, powder, particulate matter all can detect, have improved split type level switch 10's practicality and convenience.

Specifically, the clip 100 is a spring clip. The spring clamp is the instrument that easily acquires, is convenient for operate and adjusts split type liquid level switch 10 position, consequently when guaranteeing split type liquid level switch 10's the simple operation nature, also can reduce split type liquid level switch 10's use cost.

Further, an anti-slip layer is arranged in the clamping cavity. The anti-slip layer can guarantee the stability of the clamping piece 100 in the process of clamping the induction piece 200 and avoid the induction piece 200 from slipping out of the clamping cavity. And then the structural stability and the practicability of the split type liquid level switch 10 are ensured.

In one embodiment, the split liquid level switch 10 further includes a housing, the housing forms an accommodating cavity, the sensing element 200 is disposed in the accommodating cavity, the housing further defines a connection port, the connection port is communicated with the accommodating cavity, and the contact protrusion is connected with the sensing element 200 through the connection port. The shell can be an integrally formed injection molding piece or other split type assembling and disassembling structures. So long as the sensing element 200 can be placed within the housing.

In particular, the housing is a non-metallic piece. The housing may also be a resin insulating material integrally molded by 3D printing. Or other insulating material capable of resisting corrosion. The main function of the housing is to protect the inner sensing element 200 from the external environment, so the material of the housing can be adjusted according to the actual application environment. It is sufficient to ensure that the split type liquid level switch 10 can detect liquid, powder and particles.

In one embodiment, the clamping cavity is further provided with a positioning groove, the shell is further provided with a positioning bulge, and the positioning bulge can be clamped in the positioning groove. The constant head tank can make response piece 200 fix a position in the centre gripping intracavity fast when holder 100 and response piece 200 assemble, improves split type liquid level switch 10's assembly agility, and simultaneously, the constant head tank can improve the area of contact between response piece 200 and the holder 100 with the location arch, and then improves the overall structure stability of response piece 200 on holder 100 stability and split type liquid level switch 10.

In one embodiment, the number of the positioning protrusions is at least two, two adjacent positioning protrusions are arranged at intervals, and at least two positioning protrusions can be clamped in the positioning groove. The contact area between the induction part 200 and the clamping part 100 can be further increased by the plurality of positioning protrusions, and the stability of the overall structure and the convenience in use of the split type liquid level switch 10 are further guaranteed.

In one embodiment, the positioning protrusion has a trapezoidal shape. The positioning bulge is trapezoidal, so that the positioning bulge is more conveniently clamped in the positioning groove, and the trapezoid has a certain positioning and guiding effect. Of course, the positioning protrusion may have other shapes, such as a rectangular shape or a triangular shape. As long as the positioning requirements between the sensing member 200 and the clamping member 100 can be satisfied.

In one embodiment, the sensing element 200 is shaped as an "L" or "J". The shape of the shell is L-shaped or J-shaped. The shape of the sensing element 200 should meet the requirements of the capacitive structure. Therefore, the shape of the sensing element 200 is not limited to the "L" shape or the "J" shape in the present embodiment, and may be other shapes. The shape of the housing needs to take into account that the inside is opened with a receiving cavity for placing the sensing element 200, so the shape of the housing should at least conform to the shape of the sensing element 200. Of course, the shape of the housing may be other shapes as long as the accommodating cavity is ensured to stably place the sensing element 200.

In one embodiment, the two-piece liquid level switch 10 further includes a circuit board disposed in the clamping cavity, the contact protrusion is disposed on the circuit board, the contact protrusion and the sensing element 200 can generate an electrical signal when contacting, and the circuit board can transmit the electrical signal of the contact protrusion.

Further, a wireless transmission module is arranged on the circuit board. The wireless transmission module comprises a WiFi module, a Bluetooth module and the like.

In one embodiment, the split type liquid level switch 10 further comprises a controller, the circuit board is electrically connected to the controller through a communication line 300 or a wireless transmission module, and the controller can convert an electrical signal of the circuit board into a digital signal.

In one embodiment, the two-piece liquid level switch 10 further includes an indicator light 400, the indicator light 400 is electrically connected to the circuit board, and an electrical signal on the circuit board can control the indicator light 400 to be turned on or off.

Further, the split liquid level switch 10 further comprises an alarm, and the alarm is electrically connected with the controller. The alarm can send an alarm after receiving the digital signal to remind the working personnel to pay attention to the liquid level.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the utility model and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the utility model.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless explicitly stated or limited otherwise, a first feature "on" or "under" a second feature may directly contradict the first and second features, or the first and second features may indirectly contradict each other through intervening media. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the utility model. It should be noted that various changes and modifications can be made by those skilled in the art without departing from the spirit of the utility model, and these changes and modifications are all within the scope of the utility model. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. The utility model provides a split type liquid level switch, its characterized in that, split type liquid level switch includes:

the clamping piece is internally provided with a clamping cavity, a contact bulge is arranged in the clamping cavity, and the clamping piece is used for clamping the nonmetal container; and

the sensing piece, a tip of sensing piece can set up the centre gripping intracavity, the sensing piece can with contact protruding electric connection, the sensing piece with contact protruding one of them electrode that is used for forming the electric capacity structure.

2. The split type liquid level switch according to claim 1, further comprising a housing, wherein the housing is formed with an accommodating cavity, the sensing element is disposed in the accommodating cavity, the housing is further provided with a connecting port, the connecting port is communicated with the accommodating cavity, and the contact protrusion is connected with the sensing element through the connecting port.

3. The split type liquid level switch according to claim 2, wherein a positioning groove is further formed in the clamping cavity, and a positioning protrusion is further arranged on the housing and can be clamped in the positioning groove.

4. The split type liquid level switch of claim 3, wherein the number of the positioning protrusions is at least two, two adjacent positioning protrusions are arranged at intervals, and at least two positioning protrusions can be clamped in the positioning groove; and/or

The positioning bulge is trapezoidal in shape.

5. The split type liquid level switch according to any one of claims 2 to 4, wherein the shape of the sensing member is an "L" shape or a "J" shape; and/or

The shape of the shell is L-shaped or J-shaped.

6. The split level switch of any one of claims 2 to 4, wherein the housing is a non-metallic piece.

7. The split type liquid level switch according to any one of claims 1 to 4, further comprising a circuit board, wherein the circuit board is arranged in the clamping cavity, the contact protrusion is arranged on the circuit board, the contact protrusion and the sensing member are contacted to generate an electrical signal, and the circuit board can transmit the electrical signal of the contact protrusion.

8. The split liquid level switch of claim 7, further comprising a controller, wherein the circuit board is electrically connected to the controller through a communication line or a wireless transmission module, and the controller can convert an electrical signal of the circuit board into a digital signal.

9. The split type liquid level switch of claim 8, further comprising an indicator light, wherein the indicator light is electrically connected to the circuit board, and an electrical signal on the circuit board can control the indicator light to be turned on or off.

10. The split liquid level switch of any one of claims 1 to 4, wherein the clamping member is a spring clip; and an anti-skid layer is arranged in the clamping cavity.