Explosion-proof intelligent alarm liquid level detection device

Abstract

The utility model relates to the technical field of plunger diaphragm pumps, in particular to an explosion-proof intelligent alarm liquid level detection device. The explosion-proof type intelligent alarm liquid level detection device comprises a transparent explosion-proof shell and a liquid level detector, the liquid level detector is installed on the top wall of the explosion-proof shell, extends into the explosion-proof shell and is used for detecting liquid level changes in the explosion-proof shell, the liquid level detector is connected with an alarm system, and the alarm system is connected with the explosion-proof shell. A liquid inlet is formed in the bottom of the anti-explosion shell, and an anti-explosion liquid inlet connector is installed at the liquid inlet in a sealed mode. The explosion-proof liquid level meter has the advantages of being simple and reasonable in structural design, explosion-proof, capable of effectively detecting liquid level changes and giving an alarm in real time and high in safety performance.

Description

Technical Field

[0001] This utility model relates to the field of plunger diaphragm pump technology, and in particular to an explosion-proof intelligent alarm liquid level detection device. Background Technology

[0002] In a plunger diaphragm pump, the diaphragm forms a plunger hydraulic chamber and a pump chamber on either side. The hydraulic chamber is typically filled with hydraulic fluid (such as hydraulic oil). As the plunger moves, the hydraulic oil acts on the diaphragm, causing it to deform and displace, thus generating positive or negative pressure in the pump chamber to pump the fluid. Because the diaphragm is a consumable component in a plunger pump, it may rupture during use. Simultaneously, leaks may occur in sealing components within the hydraulic chamber (such as shaft seals). If these conditions occur, the hydraulic fluid level in the hydraulic chamber will be abnormal. Current plunger diaphragm pumps do not have the capability to monitor these abnormal fluid level conditions.

[0003] Therefore, it is necessary to develop an explosion-proof intelligent alarm liquid level detection device to overcome the above-mentioned technical problems. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide an explosion-proof intelligent alarm liquid level detection device, which effectively overcomes the defects of the prior art.

[0005] The technical solution of this utility model to solve the above-mentioned technical problems is as follows:

[0006] An explosion-proof intelligent alarm liquid level detection device includes a transparent explosion-proof housing and a liquid level detector. The liquid level detector is installed on the top wall of the explosion-proof housing and extends into the explosion-proof housing to detect changes in the liquid level inside the explosion-proof housing. The liquid level detector is connected to an alarm system. The bottom of the explosion-proof housing is provided with a liquid inlet, and an explosion-proof liquid inlet connector is sealed at the liquid inlet.

[0007] Based on the above technical solution, the present invention can be further improved as follows.

[0008] Furthermore, the aforementioned explosion-proof housing includes a transparent cylindrical body, with an upper cover and a lower cover sealed at the upper and lower ends of the cylindrical body, and a fastening assembly connecting the upper cover and the lower cover, with a vent plug installed on the upper cover.

[0009] Furthermore, the upper surface edge of the lower cover is provided with a first step notch, the lower end of the cylinder is inserted into the first step notch, and a sealing ring is sandwiched between the side wall of the first step notch and the lower end of the cylinder.

[0010] Furthermore, the lower surface edge of the aforementioned cover is provided with a second step notch, and the upper end of the aforementioned cylinder is embedded in the aforementioned second step notch.

[0011] Furthermore, the aforementioned cylinder is made of acrylic, the aforementioned upper and lower covers are both aluminum alloy covers, and the aforementioned explosion-proof liquid inlet connector is a copper explosion-proof connector.

[0012] Furthermore, the aforementioned fastening assembly comprises multiple sets, each set including a screw, a first nut, a second nut, and a third nut. The screw passes through the matching mounting holes on the lower and upper covers from bottom to top. The first nut is screwed onto the lower end of the screw and positioned between the nut at the lower end of the screw and the lower cover. A first combined sealing washer is sandwiched between the first nut and the lower cover. The second nut is screwed onto the lower end of the screw and positioned on the upper surface of the lower cover. A second combined sealing washer is sandwiched between the second nut and the lower cover. The third nut is screwed onto the upper end of the screw and positioned on the upper surface of the upper cover. The multiple sets of the aforementioned fastening assembly are distributed on opposite sides of the upper and lower covers.

[0013] Furthermore, the liquid level detector includes a dual float liquid level switch. The top of the upper cover is provided with a mounting hole for the liquid level detector to extend into and be assembled. The upper end of the rod of the liquid level detector is provided with a threaded section that passes through the mounting hole. A fourth nut is screwed onto the threaded section and is pressed and fitted against the upper and lower surfaces of the upper cover.

[0014] Furthermore, the aforementioned liquid level detectors are provided in at least two sets, and are distributed at intervals on opposite sides of the aforementioned explosion-proof housing.

[0015] Furthermore, the alarm system includes a processor, a power supply, and an alarm respectively installed on the top of the explosion-proof housing. The power supply is electrically connected to the liquid level detector, the processor, and the alarm respectively, and the processor is electrically connected to the alarm.

[0016] Furthermore, the alarm system also includes a display screen, which is electrically connected to the power supply and the processor.

[0017] The advantages of this utility model are: simple and reasonable structural design, explosion-proof performance, effective detection of liquid level changes and real-time alarm, and high safety performance. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of the explosion-proof intelligent alarm liquid level detection device of this utility model;

[0019] Figure 2 This is a structural schematic diagram of the explosion-proof intelligent alarm liquid level detection device of this utility model from another perspective;

[0020] Figure 3 This is a structural cross-sectional view of the explosion-proof intelligent alarm liquid level detection device of this utility model;

[0021] Figure 4 This is a cross-sectional view of the explosion-proof intelligent alarm liquid level detection device of this utility model from another angle.

[0022] The attached diagram lists the components represented by each number as follows:

[0023] 1. Explosion-proof housing; 2. Liquid level detector; 3. Explosion-proof liquid inlet connector; 11. Cylinder; 12. Top cover; 13. Bottom cover; 14. Fastening assembly; 15. Vent plug; 141. Screw; 142. First nut; 143. Second nut; 144. Third nut. Detailed Implementation

[0024] The principles and features of this utility model are described below with reference to the accompanying drawings. The examples given are only for explaining this utility model and are not intended to limit the scope of this utility model.

[0025] Example

[0026] like Figure 1 , 2 As shown in Figures 3 and 4, the explosion-proof intelligent alarm liquid level detection device of this embodiment includes a transparent explosion-proof housing 1 and a liquid level detector 2. The liquid level detector 2 is installed on the top wall of the explosion-proof housing 1 and extends into the explosion-proof housing 1 to detect changes in the liquid level inside the explosion-proof housing 1. The liquid level detector 2 is connected to an alarm system. The bottom of the explosion-proof housing 1 is provided with a liquid inlet, and an explosion-proof liquid inlet connector 3 is sealed at the liquid inlet.

[0027] In this embodiment, the explosion-proof intelligent alarm liquid level detection device, taking a plunger diaphragm pump as an example, involves sealing the explosion-proof inlet connector 3 with the pre-drilled hole at the top of the plunger hydraulic chamber of the plunger diaphragm pump. The plunger hydraulic chamber is filled with hydraulic medium, which also fills the inner cavity of the explosion-proof housing 1. The liquid level detector 2 inside the explosion-proof housing 1 monitors the internal liquid level changes in real time. If the diaphragm ruptures (breaks) or the sealing structure inside the cavity fails (or leaks), the liquid level inside the explosion-proof housing 1 will change accordingly (increase or decrease), which will be accurately detected by the liquid level detector 2. The monitored data is then fed back to the alarm system, allowing personnel to promptly detect the situation and perform effective and timely maintenance and repair work, reducing losses. Furthermore, the design of the explosion-proof housing 1 itself and the explosion-proof inlet connector 3 gives the device high explosion-proof performance, significantly improving safety in use.

[0028] It is particularly important to emphasize that the explosion-proof intelligent alarm liquid level detection device of this embodiment can also be applied to sealed cavities requiring lubrication, such as gearbox oil tanks and bearings. Specifically, an explosion-proof liquid inlet connector 3 is installed at the hole opened at the top of the sealed cavity. Once the sealing performance of the cavity is damaged (causing leakage), the explosion-proof intelligent alarm liquid level detection device of this embodiment can effectively monitor and alarm, promptly alerting personnel and effectively preventing losses. Of course, the alarm system can also be connected to the equipment's control system, and the machine will stop after an alarm is triggered.

[0029] In a preferred embodiment, the explosion-proof housing 1 includes a transparent cylindrical body 11, with an upper cover 12 and a lower cover 13 sealed at the upper and lower ends of the cylindrical body 11. A fastening assembly 14 is connected between the upper cover 12 and the lower cover 13, and a vent plug 15 is installed on the upper cover 12.

[0030] In the above embodiment, the cylinder 11 is made of transparent acrylic material and adopts a split structure design. The upper cover 12 and the lower cover 13 can be tightly assembled to the upper and lower ends of the cylinder 11 by fastening component 14, which is convenient for disassembly and assembly and also facilitates the assembly of internal components. The design of the vent plug 15 allows airflow between the inside and outside of the cylinder 11, and the internal liquid level can float normally.

[0031] In this embodiment, the upper surface edge of the lower cover 13 is provided with a first stepped notch, the lower end of the cylinder 11 is embedded in the first stepped notch, and a sealing ring is sandwiched between the side wall of the first stepped notch and the lower end of the cylinder 11. The first stepped notch fits tightly with the lower end of the explosion-proof shell 1, and the sealing performance at the joint is enhanced by the sealing ring. The structural design is relatively simple and easy to disassemble and assemble.

[0032] In this embodiment, the lower surface edge of the upper cover 12 is provided with a second stepped notch, and the upper end of the cylinder 11 is embedded in the second stepped notch. The second stepped notch cooperates with the upper end of the cylinder 11 to achieve positioning and installation, which is relatively simple in design and easy to assemble and disassemble.

[0033] In this embodiment, the cylinder 11 is made of acrylic, the upper cover 12 and the lower cover 13 are both aluminum alloy covers, and the explosion-proof liquid inlet connector 3 is a copper explosion-proof connector. This effectively prevents static electricity and provides a good explosion-proof effect.

[0034] In a preferred embodiment, the fastening assembly 14 is provided in multiple sets. Each set of the fastening assembly 14 includes a screw 141, a first nut 142, a second nut 143, and a third nut 144. The screw 141 passes through the matching mounting holes on the lower cover 13 and the upper cover 12 from bottom to top. The first nut 142 is screwed onto the lower end of the screw 141 and is disposed between the nut at the lower end of the screw 141 and the lower cover 13. A first combined sealing washer is sandwiched between the first nut 142 and the lower cover 13. The second nut 143 is screwed onto the lower end of the screw 141 and is disposed on the upper surface of the lower cover 13. A second combined sealing washer is sandwiched between the second nut 143 and the lower cover 13. The third nut 144 is screwed onto the upper end of the screw 141 and is disposed on the upper surface of the upper cover 12. The multiple sets of the fastening assembly 14 are distributed on opposite sides of the upper cover 12 and the lower cover 13.

[0035] In the above embodiment, the assembly of multiple sets of screws 141 with the upper cover 12 and the lower cover 13 makes the structure of the cylinder 11 compact and stable. At the same time, the screws 141 and the lower cover 13 are locked together by nuts on the upper and lower sides and a combination sealing gasket, resulting in good sealing performance. The combination sealing gasket is a gasket accessory of the prior art and will not be described in detail here.

[0036] In a preferred embodiment, the liquid level detector 2 includes a dual float liquid level switch. The top of the upper cover 12 is provided with a mounting hole for the liquid level detector 2 to extend into and be assembled. The upper end of the rod of the liquid level detector 2 is provided with a threaded section that passes through the mounting hole. A fourth nut (c in the figure) is screwed onto the threaded section and pressed tightly against the upper and lower surfaces of the upper cover 12.

[0037] In the above implementation scheme, the liquid level detector 2 adopts an existing dual float liquid level switch (the specific structure and working principle of which will not be described in detail here), which can detect the changes in high and low liquid levels respectively, and is connected to the alarm system through its own wiring. It can effectively detect the highest threshold and the lower threshold of the liquid level in the explosion-proof housing 1. When the liquid level exceeds the high value or falls below the lower limit value, it can trigger an alarm through the alarm system.

[0038] In this embodiment, at least two sets of liquid level detectors 2 are provided, and they are distributed at intervals on opposite sides of the explosion-proof housing 1. The distribution of multiple sets of liquid level detectors 2 makes the detection data more accurate.

[0039] In a preferred embodiment, the alarm system includes a processor, a power supply, and an alarm respectively mounted on the top of the explosion-proof housing 1. The power supply is electrically connected to the liquid level detector 2, the processor, and the alarm, and the processor is electrically connected to the alarm.

[0040] In the above implementation scheme, the processor adopts a commercially available compatible model. After the liquid level detector 2 measures the liquid level data, it feeds it back to the processor. It will not alarm if the liquid level is within the safe value, but will alarm if the liquid level is outside the safe value to remind the staff. The design is relatively simple and reasonable, and the safety performance is improved.

[0041] In this embodiment, the alarm system further includes a display screen, which is electrically connected to both the power supply and the processor. The display screen can display liquid level data in real time.

[0042] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0043] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0044] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0045] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0046] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0047] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. An explosion-proof intelligent alarm liquid level detection device, characterized in that: It includes a transparent explosion-proof housing (1) and a liquid level detector (2). The liquid level detector (2) is installed on the top wall of the explosion-proof housing (1) and extends into the explosion-proof housing (1) to detect changes in the liquid level inside the explosion-proof housing (1). The liquid level detector (2) is connected to an alarm system. The bottom of the explosion-proof housing (1) is provided with a liquid inlet, and an explosion-proof liquid inlet connector (3) is sealed at the liquid inlet.

2. The explosion-proof intelligent alarm liquid level detection device according to claim 1, characterized in that: The explosion-proof housing (1) includes a transparent cylindrical body (11), with an upper cover (12) and a lower cover (13) sealed at the upper and lower ends of the cylindrical body (11), and a fastening assembly (14) connecting the upper cover (12) and the lower cover (13), and a vent plug (15) installed on the upper cover (12).

3. The explosion-proof intelligent alarm liquid level detection device according to claim 2, characterized in that: The upper surface edge of the lower cover (13) is provided with a first step notch, the lower end of the cylinder (11) is embedded in the first step notch, and a sealing ring is sandwiched between the side wall of the first step notch and the lower end of the cylinder (11).

4. The explosion-proof intelligent alarm liquid level detection device according to claim 2, characterized in that: The lower surface edge of the cover (12) is provided with a second step notch, and the upper end of the cylinder (11) is embedded in the second step notch.

5. The explosion-proof intelligent alarm liquid level detection device according to claim 2, characterized in that: The cylinder (11) is an acrylic component, the upper cover (12) and the lower cover (13) are both aluminum alloy covers, and the explosion-proof liquid inlet connector (3) is a copper explosion-proof connector.

6. The explosion-proof intelligent alarm liquid level detection device according to claim 2, characterized in that: The fastening assembly (14) is provided in multiple sets. Each set of the fastening assembly (14) includes a screw (141), a first nut (142), a second nut (143), and a third nut (144). The screw (141) passes through the matching mounting holes on the lower cover (13) and the upper cover (12) from bottom to top. The first nut (142) is screwed onto the lower end of the screw (141) and is located between the nut at the lower end of the screw (141) and the lower cover (13). The first nut (142) and the lower cover (12) are connected to the screw (141). A first combination sealing washer is sandwiched between the covers (13), the second nut (143) is screwed onto the lower end of the screw (141) and is disposed on the upper surface of the lower cover (13), a second combination sealing washer is sandwiched between the second nut (143) and the lower cover (13), the third nut (144) is screwed onto the upper end of the screw (141) and is disposed on the upper surface of the upper cover (12), and multiple sets of the fastening components (14) are distributed on the opposite sides of the upper cover (12) and the lower cover (13).

7. The explosion-proof intelligent alarm liquid level detection device according to claim 2, characterized in that: The liquid level detector (2) includes a double float liquid level switch. The top of the upper cover (12) is provided with an installation hole for the liquid level detector (2) to extend into and be assembled. The upper end of the rod of the liquid level detector (2) is provided with a threaded section that passes through the installation hole. A fourth nut is screwed onto the threaded section and is pressed and fitted against the upper and lower surfaces of the upper cover (12).

8. The explosion-proof intelligent alarm liquid level detection device according to claim 7, characterized in that: The liquid level detector (2) is provided in at least two sets and is distributed at intervals on opposite sides of the explosion-proof housing (1).

9. An explosion-proof intelligent alarm liquid level detection device according to any one of claims 1 to 5, characterized in that: The alarm system includes a processor, a power supply and an alarm respectively installed on the top of the explosion-proof housing (1). The power supply is electrically connected to the liquid level detector (2), the processor and the alarm respectively. The processor is electrically connected to the alarm.

10. The explosion-proof intelligent alarm liquid level detection device according to claim 9, characterized in that: The alarm system also includes a display screen, which is electrically connected to the power supply and the processor.

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