Inductive switch for detecting temperature and liquid level

Abstract

The utility model discloses an inductive switch for detecting temperature and liquid level. The inductive switch comprises a mounting piece, a connector, a rod body, an electronic component, a first inductor, a second inductor and a floater. Wherein the connector is arranged on the mounting piece, and the connector is used for being connected with an external cable; the rod body is arranged on the mounting piece, and the rod body is provided with an inner cavity; the electronic component is arranged in the inner cavity of the mounting piece; the first sensor is arranged in the inner cavity of the rod body and is electrically connected with the electronic component; the second sensor is arranged at one end, far away from the connector, of the rod body; the floater is movably arranged outside the rod body, and a magnet is arranged in the floater; the first inductor can detect the position of the magnet, and the second inductor can detect the temperature. The inductive switch for detecting the temperature and the liquid level can detect the temperature and the liquid level, and is simple in structure and small in occupied space.

Description

Technical Field

[0001] The utility model relates to the technical field of induction switches, in particular to an induction switch for detecting temperature and liquid level. Background Art

[0002] In the related art, industrial automation equipment often uses a single measuring switch for measuring temperature or liquid level, such as a temperature switch for measuring temperature and a liquid level switch for measuring liquid level. In actual applications, the use of two independent switches increases the number of components and the cost, and requires more installation space, which is not applicable to some application scenarios with limited installation space and cannot meet the requirements of installing and using two switches. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model provides an induction switch for detecting temperature and liquid level, which can detect temperature and liquid level, has a simple structure and occupies little space.

[0004] According to the first aspect of the present invention, an induction switch for detecting temperature and liquid level includes:

[0005] Mounting parts;

[0006] A connector, provided on the mounting member, and used for connecting an external cable;

[0007] A rod body, arranged on the mounting member, the rod body having an inner cavity;

[0008] An electronic component is disposed in the inner cavity of the mounting member;

[0009] A first sensor is disposed in the inner cavity of the rod body and is electrically connected to the electronic component;

[0010] A second sensor is disposed at an end of the rod body away from the connector;

[0011] A float is movably arranged outside the rod body, and a magnet is arranged inside the float;

[0012] The first sensor can detect the position of the magnet, and the second sensor can detect the temperature.

[0013] According to an embodiment of the utility model, an induction switch for detecting temperature and liquid level has at least the following beneficial effects:

[0014] The induction switch integrates the components for detecting temperature and liquid level into one. A temperature switch is provided at the end of the rod, a magnetic float is provided on the rod, and a magnetic induction switch is provided inside the rod to detect the position change of the magnetic float. The product has a simple structure and occupies a small space for installation.

[0015] According to some embodiments of the present utility model, the rod body is provided with an upper limit portion and a lower limit portion, and the float is provided between the upper limit portion and the lower limit portion.

[0016] According to some embodiments of the present invention, the positions of the upper limit portion and the lower limit portion can be adjusted.

[0017] According to some embodiments of the present utility model, the mounting member is provided with a mounting portion and a blocking portion, the mounting member can be mounted at the detection position through the mounting portion, and the blocking portion can prevent liquid from splashing onto the connector.

[0018] According to some embodiments of the present invention, the mounting portion is an external thread structure.

[0019] According to some embodiments of the present utility model, the blocking portion is an annular stopper, and the annular stopper is located between the mounting portion and the connector.

[0020] According to some embodiments of the present utility model, the first sensor is provided with a first switch, and the first switch is electrically connected to the electronic component;

[0021] When the first sensor detects that the magnet of the float is at a preset position, the first switch is activated.

[0022] According to some embodiments of the present utility model, the second sensor is provided with a second switch, and the second switch is electrically connected to the electronic component;

[0023] When the second sensor detects that the liquid temperature is at a preset value, the second switch is activated.

[0024] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The present invention is further described below with reference to the accompanying drawings and embodiments, wherein:

[0026] Figure 1 The figure is an internal schematic diagram of an induction switch for detecting temperature and liquid level according to an embodiment of the utility model.

[0027] Reference numerals:

[0028] The mounting member 100, the mounting portion 110, the blocking portion 120, and the electronic component 130;

[0029] The rod body 200, the first sensor 210, the second sensor 220, the upper limit portion 230, and the lower limit portion 240;

[0030] Float 300, magnet 310;

[0031] Connector 400. DETAILED DESCRIPTION

[0032] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0033] In the description of the present invention, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0034] In the description of the present utility model, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood to exclude the number itself, and "above", "below", "within" etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0035] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0036] In the related art, industrial automation equipment often uses a single measuring switch for measuring temperature or liquid level, such as a temperature switch for measuring temperature and a liquid level switch for measuring liquid level. In actual applications, the use of two independent switches increases the number of components and the cost, and requires more installation space, which is not applicable to some application scenarios with limited installation space and cannot meet the requirements of installing and using two switches.

[0037] In response to related technical problems, the utility model proposes an induction switch for detecting temperature and liquid level, which integrates the components for detecting temperature and liquid level into one. A temperature switch is provided at the end of a rod body, a magnetic float is provided on the rod body, and a magnetic induction switch is provided inside the rod body for detecting the position change of the magnetic float. The product has a simple structure and occupies a small space for installation.

[0038] Reference Figure 1 The induction switch for detecting temperature and liquid level includes a mounting member 100, a rod body 200, an electronic component 130, a first sensor 210, a second sensor 220 and a float 300. The rod body 200 is disposed at one end of the mounting member 100, the rod body 200 has an inner cavity, the first sensor 210 is disposed in the inner cavity of the rod body 200 and is electrically connected to the electronic component 130, the second sensor 220 is disposed at the end of the rod body 200, the electronic component 130 is disposed in the inner cavity of the mounting member 100, the float 300 is movably disposed outside the rod body 200 and a magnet 310 is disposed inside the float 300. The first sensor 210 can detect the position of the magnet 310, and the second sensor 220 can detect the temperature.

[0039] It can be understood that the mounting member 100 is a metal mounting portion 110 or a plastic mounting portion 110, the mounting member 100 is the main body of the mounting, and the rod body 200 and other detection components are installed at the location to be tested through the mounting member 100. The mounting member 100 is provided with a mounting portion 110, and the mounting member 100 is installed at the location to be tested through the mounting portion 110. The mounting portion 110 is generally an external thread structure, and this design is convenient for installation or removal. In addition to the external thread structure, the mounting portion 110 can also be a screw mounting structure or a bolt mounting structure. The use of screws or bolts for installation can enhance the fixing effect, but it will lose a certain degree of convenience.

[0040] It is understandable that the second sensor 220 is a temperature probe, which is exposed to the outside and can directly contact the liquid to achieve the function of temperature measurement. The first sensor 210 is a magnetic induction switch, which can detect the position change of the magnetic float 300. The float 300 will change with the height change of the liquid level. When the liquid level rises, the float 300 rises, and when the liquid level drops, the float 300 drops. The rod body 200 is generally set perpendicular to the liquid surface, so that the movement of the float 300 is more linear.

[0041] It is understandable that the electronic component 130 is provided with a circuit board and a connecting wire, and the circuit board is respectively connected to the first sensor 210 and the second sensor 220 through the connecting wire. The first sensor 210 is provided with a first switch, and the first switch is electrically connected to the electronic component 130. When the first sensor 210 detects that the magnet 310 of the float 300 is in a preset position, the first switch is activated. For example, when the first sensor 210 detects that the float 300 is in an alarm liquid level, the first switch is turned on and transmits a signal to the alarm system to realize the liquid level alarm function. The second sensor 220 is provided with a second switch, and the second switch is electrically connected to the electronic component 130. When the second sensor 220 detects that the liquid temperature is at a preset value, the second switch is activated. For example, when the second sensor 220 detects that the liquid temperature is at an alarm temperature, the second switch is turned on and transmits a signal to the alarm system to realize the liquid temperature alarm function.

[0042] It can be understood that the rod body 200 is provided with an upper limit portion 230 and a lower limit portion 240, and the float 300 is arranged between the upper limit portion 230 and the lower limit portion 240, wherein the upper limit portion 230 and the lower limit portion 240 are detachably mounted on the rod body 200 and the mounting position can be adjusted, and the position of the upper limit portion 230 and the lower limit portion 240 relative to the rod body 200 is adjusted according to the liquid level detection range actually used by the customer.

[0043] Reference Figure 1 The inductive switch for detecting temperature and liquid level also includes a connector 400. The connector 400 is arranged at one end of the mounting member 100 away from the rod body 200. The connector 400 is electrically connected to the electronic component 130 and is used to connect external cables. The connector 400 is a Hirschman connector. The signals of the first sensor 210 and the second sensor 220 are transmitted to the external system through the connector 400 and the external cable. The mounting member 100 is also provided with a blocking portion 120. The blocking portion 120 is located on a side close to the connector 400. The blocking portion 120 can prevent liquid from splashing onto the connector 400, effectively reducing the short circuit phenomenon caused by the connector 400 contacting the liquid. The blocking portion 120 is generally an annular block, which is located between the mounting portion 110 and the connector 400.

[0044] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of ordinary technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. An induction switch for detecting temperature and liquid level, characterized in that: include: Mounting parts; A connector, provided on the mounting member, and used for connecting an external cable; A rod body, arranged on the mounting member, the rod body having an inner cavity; An electronic component is disposed in the inner cavity of the mounting member; A first sensor is disposed in the inner cavity of the rod body and is electrically connected to the electronic component; A second sensor is disposed at an end of the rod body away from the connector; A float is movably arranged outside the rod body, and a magnet is arranged inside the float; The first sensor can detect the position of the magnet, and the second sensor can detect the temperature.

2. The induction switch for detecting temperature and liquid level according to claim 1, characterized in that: The rod body is provided with an upper limit portion and a lower limit portion, and the float is arranged between the upper limit portion and the lower limit portion.

3. The induction switch for detecting temperature and liquid level according to claim 2, characterized in that: The positions of the upper limit portion and the lower limit portion are adjustable.

4. The induction switch for detecting temperature and liquid level according to claim 1, characterized in that: The mounting member is provided with a mounting portion and a blocking portion, the mounting member can be mounted at the detection position through the mounting portion, and the blocking portion can block liquid from splashing onto the connector.

5. The induction switch for detecting temperature and liquid level according to claim 4, characterized in that: The mounting portion is an external thread structure.

6. The induction switch for detecting temperature and liquid level according to claim 5, characterized in that: The blocking portion is an annular stopper, and the annular stopper is located between the mounting portion and the connector.

7. The induction switch for detecting temperature and liquid level according to claim 1, characterized in that: The first sensor is provided with a first switch, and the first switch is electrically connected to the electronic component; When the first sensor detects that the magnet of the float is at a preset position, the first switch is activated.

8. The induction switch for detecting temperature and liquid level according to claim 1, characterized in that: The second inductor is provided with a second switch, and the second switch is electrically connected to the electronic component; When the second sensor detects that the liquid temperature is at a preset value, the second switch is activated.

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