Signal simulation verification device for electromagnetic liquid level sensor

Abstract

The utility model belongs to the technical field of electromagnetic liquid level sensors, and discloses an electromagnetic liquid level sensor signal simulation verification device which comprises a handheld signal generator, and a connecting port is installed outside the bottom end of the handheld signal generator. The nut is rotated to drive the first supporting frame and the second supporting frame not to be stressed any more, the second protruding block and the first protruding block are separated from the rectangular groove and the groove, the second supporting frame and the first supporting frame are rotated to rotate with the nut as the center axis and coincide, and meanwhile the second supporting frame drives the rectangular block to make contact with the outer portion of the third protruding block. The outer part of the third lug is in a semicircular arc shape, so that the third lug bears continuous force along the outer part of the rectangular block, the third lug extrudes the spring to be stressed and compressed, and the third lug drives the connecting rod to contract along the inner part, and in the process, the accuracy of simulating and verifying signals of the electromagnetic liquid level sensor by the equipment is improved; and the situation that the equipment falls off due to long-time taking by workers is reduced.

Description

TECHNICAL FIELD

[0001] The utility model belongs to electromagnetic liquid level sensor technical field, specifically a kind of electromagnetic liquid level sensor signal simulation calibration device. BACKGROUND

[0002] Electromagnetic liquid level sensor plays a vital role in numerous industrial fields, it is widely used in petrochemical industry, pharmaceutical, water treatment, food and beverage industry, for accurately measuring the liquid level height of various liquids, electromagnetic liquid level sensor signal simulation calibration device is used to detect and calibrate the equipment of electromagnetic liquid level sensor, electromagnetic liquid level sensor signal simulation calibration device has important role in the production, installation, maintenance and scientific research of electromagnetic liquid level sensor.

[0003] Firstly, electromagnetic liquid level sensor signal simulation calibration device is usually composed of signal generator, analog liquid level part, control unit and display unit, through signal generator, the electrical signal corresponding to different liquid levels can be generated, analog liquid level part is used to simulate the change of actual liquid level, control unit is responsible for controlling the operation and parameter setting of the whole device, display unit is used to display the simulated liquid level information and the output signal of sensor, so as to simulate and calibrate electromagnetic liquid level sensor signal, and signal transmitter is divided into handheld signal generator and table type signal generator, but most of the existing handheld signal generator is long block, when signal simulation calibration is carried out on electromagnetic liquid level sensor, it is inconvenient for staff to take electromagnetic liquid level sensor for signal simulation calibration, and long-time taking can easily lead to the occurrence of equipment falling, thereby reducing the accuracy of equipment signal simulation calibration on electromagnetic liquid level sensor, therefore, the present application provides a kind of electromagnetic liquid level sensor signal simulation calibration device. UTILITY MODEL CONTENTS

[0004] To solve the problems proposed in the above background art, the utility model provides a kind of electromagnetic liquid level sensor signal simulation calibration device, solve the problem that most of the existing handheld signal generator is long block, when signal simulation calibration is carried out on electromagnetic liquid level sensor, it is inconvenient for staff to take electromagnetic liquid level sensor for signal simulation calibration, and long-time taking can easily lead to the occurrence of equipment falling, thereby reducing the accuracy of equipment signal simulation calibration on electromagnetic liquid level sensor.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solution: a signal simulation calibration device for an electromagnetic liquid level sensor, comprising a handheld signal generator, a connection port being installed on the outside of the bottom end of the handheld signal generator, a second support frame being provided on the outside of the connection port, a first support frame being installed on both sides of the outside of the second support frame, a rectangular block being fixed to the top lower end of the second support frame, a telescopic assembly being installed on the inside of the first support frame, and a fixed assembly being provided inside the first support frame;

[0006] The fixing assembly also includes second round blocks installed on both sides of the outside of the handheld signal generator, the internal thread of the second round block is connected to a nut, the outside of the nut is sleeved with a first round block, a first protrusion is installed on one side of the outside of the first round block, and a second protrusion is fixed to the outside of the second round block.

[0007] Preferably, the telescopic assembly further comprises a connecting cylinder mounted on the inner side of the first support frame, a connecting rod is sleeved inside the connecting cylinder, a spring is provided outside the connecting rod, and a third protrusion is fixed to one end of the outer side of the connecting rod.

[0008] Preferably, through holes are provided on both sides of the exterior of the rectangular block, and the exterior of the third protrusion is in a semicircular arc shape.

[0009] Preferably, a groove is formed on one side of the exterior of the first support frame, and the first protrusion is engaged with the groove.

[0010] Preferably, there are multiple first protrusions, and the multiple first protrusions are distributed in a ring shape on one side of the outer portion of the first circular block.

[0011] Preferably, a rectangular groove is formed on the outside of the second round block, and the second protrusion is engaged with the rectangular groove.

[0012] Preferably, the first support frame and the second support frame are both in a "C" shape, and the first support frame and the second support frame are in an overlapping shape after rotation.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0014] The second support frame and the second support frame are connected with each other by the second support frame, and the second support frame and the second support frame are connected with each other by the second support frame. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the cross-sectional structure of the utility model;

[0017] Figure 3 For this utility model Figure 2 Schematic diagram of the enlarged structure at A in the middle;

[0018] Figure 4 This is a schematic diagram of the combined structure of the fixed components of the utility model;

[0019] Figure 5 This is a schematic diagram of the combined structure of the telescopic component and the fixed component of the utility model.

[0020] In the figure: 1. Handheld signal generator; 2. Connecting port; 3. First support frame; 4. Second support frame; 5. Rectangular block; 6. Fixing assembly; 601. Nut; 602. First round block; 603. First protrusion; 604. Second round block; 605. Second protrusion; 7. Telescopic assembly; 701. Connecting cylinder; 702. Connecting rod; 703. Spring; 704. Third protrusion. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0022] like Figures 1 to 5 As shown, the utility model provides an electromagnetic liquid level sensor signal simulation calibration device, including a handheld signal generator 1, a connection port 2 is installed on the outside of the bottom end of the handheld signal generator 1, a second support frame 4 is provided on the outside of the connection port 2, a first support frame 3 is installed on both sides of the outside of the second support frame 4, a rectangular block 5 is fixed on the top lower end of the second support frame 4, a telescopic component 7 is installed on the inside of the first support frame 3, and a fixing component 6 is provided inside the first support frame 3;

[0023] The fixing assembly 6 also includes a second round block 604 installed on both sides of the outside of the handheld signal generator 1. The internal thread of the second round block 604 is connected to the nut 601. The outside of the nut 601 is sleeved with the first round block 602. The first protrusion 603 is installed on one side of the outside of the first round block 602. The outside of the second round block 604 is fixed with a second protrusion 605.

[0024] The above scheme is adopted: in the initial state, the first support frame 3 and the second support frame 4 are fixed by the nut 601 and are in a stressed state. At this time, the second protrusion 605 is clamped in the rectangular groove opened on the outside of the second round block 604, and the first protrusion 603 is clamped in the groove opened on the outside of the first round block 602. When the nut 601 is rotated, the nut 601 is no longer subjected to force on the first support frame 3 and the second support frame 4, and the second support frame 4 drives the second protrusion 605 to disengage from the rectangular groove. At the same time, the first support frame 3 drives the first protrusion 603 to disengage from the groove. By rotating the second support frame 4 and the first support frame 3, the second support frame 4 and the first support frame 3 are rotated with the nut 601 as the central axis, so that the second support frame 4 coincides with the first support frame 3. At the same time, the second support frame 4 drives the rectangular block 5 to contact the outside of the third protrusion 704. Because the outside of the third protrusion 704 is in a semicircular shape, when the rectangular block 5 contacts the third protrusion 704, the third protrusion 704 is subjected to continuous force along the outside of the rectangular block 5, and the spring 703 is compressed by the third protrusion 704. The third protrusion 704 drives the connecting rod 702 to contract along the inside of the connecting cylinder 701. When the outside of the third protrusion 704 contacts the through holes opened on both sides of the outside of the rectangular block 5, the spring 703 resets and drives the connecting rod 702 to push the third protrusion 704 into the through hole. At the same time, the nut 601 is rotated so that the first support frame 3 and the second support frame 4 are subjected to force to drive the second protrusion 605 to fit into the rectangular groove.

[0025] like Figure 1 、 Figure 3 、 Figure 4 and Figure 5 As shown, a groove is provided on one side of the outer portion of the first support frame 3, and the first protrusion 603 is engaged with the groove;

[0026] There are multiple first protrusions 603 , and the multiple first protrusions 603 are distributed in a ring shape on one side outside the first circular block 602 ;

[0027] A rectangular groove is formed on the outside of the second round block 604, and the second protrusion 605 is engaged with the rectangular groove;

[0028] The first support frame 3 and the second support frame 4 are both in a “C” shape, and the first support frame 3 and the second support frame 4 are in an overlapping shape after rotation.

[0029] The above scheme is adopted: through the groove opened on the outer side of the first support frame 3, when the nut 601 is rotated, the first support frame 3 and the second support frame 4 are driven by force, and the first support frame 3 and the second support frame 4 drive the first protrusion 603 and the second protrusion 605 to be respectively clamped into the groove and the rectangular groove for fixation, and the first support frame 3 and the second support frame 4 are both "C" shaped. When the first support frame 3 and the second support frame 4 are rotated to overlap with the nut 601 as the central axis, the first support frame 3 and the second support frame 4 are used for convenience of staff to pick up, and in this process, the accuracy of the equipment's simulation verification of the electromagnetic liquid level sensor signal is improved.

[0030] like Figure 1 、 Figure 4 and Figure 5 As shown, the telescopic assembly 7 further includes a connecting cylinder 701 mounted on the inner side of the first support frame 3. A connecting rod 702 is sleeved inside the connecting cylinder 701. A spring 703 is provided outside the connecting rod 702. A third protrusion 704 is fixed to one end of the outer side of the connecting rod 702.

[0031] Through holes are formed on both sides of the exterior of the rectangular block 5 , and the exterior of the third protrusion 704 is semicircular.

[0032] The above-mentioned scheme is adopted: after the first support frame 3 and the second support frame 4 are rotated and overlapped, the outside of the rectangular block 5 is in contact with the outside of the third protrusion 704, and the outside of the third protrusion 704 is in a semicircular arc shape. When the third protrusion 704 is subjected to force, the extrusion spring 703 is compressed, and at the same time, the connecting rod 702 is pushed to shrink along the inside of the connecting cylinder 701, so that the third protrusion 704 is stuck in the through holes opened on both sides of the outside of the rectangular block 5, and the first support frame 3 and the second support frame 4 are fixed, which is convenient for the staff to take, and reduces the situation where the equipment falls due to the inconvenience of the staff taking it for a long time.

[0033] The working principle and use process of this utility model:

[0034] First, when it is necessary to perform signal simulation verification on the electromagnetic liquid level sensor, the electromagnetic liquid level sensor is connected to the connecting port 2. In the initial state, the first support frame 3 and the second support frame 4 are fixed in a stressed state by the nut 601. At this time, the second protrusion 605 is clamped in the rectangular groove opened on the outside of the second round block 604, and the first protrusion 603 is clamped in the groove opened on the outside of the first round block 602. When the nut 601 is rotated, the nut 601 is no longer subjected to force on the first support frame 3 and the second support frame 4, and the second support frame 4 drives the second protrusion 605 to disengage from the rectangular groove. At the same time, the first support frame 3 drives the first protrusion 603 to disengage from the groove. By rotating the second support frame 4 and the first support frame 3, the second support frame 4 and the first support frame 3 are rotated with the nut 601 as the central axis, so that the second support frame 4 coincides with the first support frame 3. When the second support frame 4 drives the rectangular block 5 to contact the outside of the third protrusion 704, because the outside of the third protrusion 704 is in the shape of a semicircle, when the rectangular block 5 contacts the third protrusion 704, the third protrusion 704 is subjected to continuous force along the outside of the rectangular block 5, and the spring 703 is compressed by the third protrusion 704, and the third protrusion 704 drives the connecting rod 702 to retract along the inside of the connecting cylinder 701. When the outside of the third protrusion 704 contacts the through holes opened on both sides of the outside of the rectangular block 5, the spring 703 resets and drives the connecting rod 702 to push the third protrusion 704 into the through hole. At the same time, the nut 601 is rotated so that the first support frame 3 and the second support frame 4 are subjected to force to drive the second protrusion 605 to be stuck in the rectangular groove. The staff can hold the second support frame 4 and the outside of the first support frame 3 to facilitate the equipment to be taken for work.

[0035] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0036] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A signal simulation calibration device for an electromagnetic liquid level sensor, comprising a handheld signal generator (1), characterized in that: A connecting port (2) is installed on the outside of the bottom end of the handheld signal generator (1), a second support frame (4) is provided on the outside of the connecting port (2), a first support frame (3) is installed on both sides of the outside of the second support frame (4), a rectangular block (5) is fixed on the top lower end of the second support frame (4), a telescopic component (7) is installed on the inside of the first support frame (3), and a fixing component (6) is provided inside the first support frame (3); The fixing assembly (6) further comprises a second round block (604) mounted on both sides of the outside of the handheld signal generator (1); the second round block (604) is internally threadedly connected to a nut (601); the outside of the nut (601) is sleeved with a first round block (602); a first convex block (603) is mounted on one side of the outside of the first round block (602); and a second convex block (605) is fixedly mounted on the outside of the second round block (604).

2. The electromagnetic liquid level sensor signal simulation calibration device according to claim 1, characterized in that: The telescopic assembly (7) further comprises a connecting cylinder (701) mounted on the inner side of the first support frame (3); a connecting rod (702) is sleeved inside the connecting cylinder (701); a spring (703) is provided outside the connecting rod (702); and a third protrusion (704) is fixed to one end of the outer side of the connecting rod (702).

3. The electromagnetic liquid level sensor signal simulation calibration device according to claim 2, characterized in that: Through holes are provided on both sides of the exterior of the rectangular block (5), and the exterior of the third protrusion (704) is in a semicircular arc shape.

4. The electromagnetic liquid level sensor signal simulation calibration device according to claim 1, characterized in that: A groove is provided on one side of the exterior of the first support frame (3), and the first protrusion (603) is engaged with the groove.

5. The electromagnetic liquid level sensor signal simulation calibration device according to claim 1, characterized in that: There are multiple first convex blocks (603), and the multiple first convex blocks (603) are distributed in an annular manner on one side of the outer portion of the first circular block (602).

6. The electromagnetic liquid level sensor signal simulation calibration device according to claim 1, characterized in that: A rectangular groove is provided on the outside of the second round block (604), and the second protrusion (605) is engaged with the rectangular groove.

7. The electromagnetic liquid level sensor signal simulation calibration device according to claim 1, characterized in that: The first support frame (3) and the second support frame (4) are both in a "C" shape, and the first support frame (3) and the second support frame (4) are in an overlapping shape after rotation.

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