Safety protection device for chemical inspection

Abstract

The utility model belongs to the field of chemical safety, and discloses a safety protection device for chemical inspection, which adopts the technical scheme that the safety protection device comprises a column body, a through hole is formed in the middle of the column body, grooves are formed in the upper side and the lower side of the inner wall of the through hole respectively, and electric telescopic rods are fixedly mounted on the two sides of each groove respectively; and sealing plates are fixedly installed at the movable ends of the electric telescopic rods correspondingly, the peripheries of the sealing plates are in close contact fit with the inner walls of the corresponding grooves correspondingly, the corresponding sealing plates can be in close contact fit, and clamping grooves are formed in the opposite sides of the two sealing plates on the upper portion correspondingly. According to the chemical inspection device, harmful gas can be prevented from escaping outwards during chemical inspection, the extraction rate of the harmful gas is increased, air pollution is reduced, and the chemical inspection is safer.

Description

Technical Field

[0001] This utility model belongs to the field of chemical safety, and specifically relates to a safety protection device for chemical testing. Background Technology

[0002] During chemical production, monitoring is essential. Since some chemical reactions require special environments, the accuracy of chemical testing probes can be affected by prolonged exposure to these environments. Therefore, external probes are often used. After chemical production, the reaction vessel is opened, and the probe is inserted to inspect the extent of the chemical reaction and whether it meets the required standards. This effectively maintains the safety and stability of chemical production and improves its quality. However, during vessel opening inspections, chemical gases produced by the reaction diffuse outwards. Although existing devices use a fan with its suction port facing the vessel opening to draw air, the gap between the fan suction port and the vessel opening, requiring the probe to be inserted inside, can easily lead to the escape of harmful gases. Utility Model Content

[0003] In order to overcome the shortcomings of the prior art, the purpose of this utility model is to provide a safety protection device for chemical testing, so as to solve the problems mentioned in the background art.

[0004] The technical solution adopted by this safety protection device for chemical testing to solve its technical problems is as follows:

[0005] A safety protection device for chemical testing is provided, comprising a column with a through hole in the middle. Grooves are formed on the upper and lower sides of the inner wall of the through hole. Electric telescopic rods are fixedly installed on both sides of the grooves. Sealing plates are fixedly installed on the movable ends of the electric telescopic rods. The outer periphery of each sealing plate is in close contact with the inner wall of the corresponding groove, allowing for tight contact between the corresponding sealing plates. Slots are formed on opposite sides of the two upper sealing plates. L-shaped rods are fixedly installed on opposite sides of the two lower sealing plates. Brackets are fixedly installed on the top of both sides of the lower grooves, and first contact switches are fixedly installed on the brackets. Air extractors are embedded on both sides of the middle of the through hole. The air extraction ports of the air extractors are connected to the inside of the through hole, and the air outlets of the air extractors are connected to the top of the column. The air extractors are connected to the first contact switches on their respective sides via electrical circuits.

[0006] Furthermore, air guide pipes are fixedly installed on the air outlet of the air pump.

[0007] Furthermore, an annular cavity is provided around the through hole in the column body, and several air inlets are opened in the annular cavity that communicate with the interior of the through hole. The annular cavity is connected to the air extraction port of the air extractor.

[0008] Furthermore, a second contact switch is fixedly installed in each of the card slots.

[0009] Furthermore, horizontal grooves are respectively opened in the card slot, and spring telescopic rods are fixedly installed in the horizontal grooves respectively. The second contact switches are respectively fixedly installed at the movable ends of the spring telescopic rods.

[0010] Furthermore, external threads are respectively formed on the outer periphery of the column.

[0011] Furthermore, a raised edge is fixedly installed on the top of the outer periphery of the column.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] 1. This utility model illustrates a safety protection device for chemical testing. When chemical testing is required, a column is installed and sealed after penetrating the body of a reaction vessel. The electric telescopic rod in the upper groove retracts, opening the upper sealing plate. The chemical testing probe is placed between the sealing plates. When the upper electric telescopic rod extends, the chemical testing probe is clamped by a corresponding slot. The chemical testing probe is a mature existing technology. The slot that mates with the chemical testing probe provides a sealed clamping effect. Subsequently, the lower electric telescopic rod retracts, opening the lower sealing plate, allowing the chemical testing probe to... Chemical testing can then be performed inside the reaction vessel. After the testing is completed, the lower electric telescopic rod extends, and the lower sealing plate closes to seal the inside of the vessel. Simultaneously, as the lower sealing plate moves, it drives the L-shaped rod to move, and when the sealing plate closes, it presses the first contact switch. At this time, the vacuum pump starts, which can evacuate the air inside the through hole. This prevents harmful gases from escaping and polluting the air after the upper sealing plate opens. This device can prevent harmful gases from escaping during chemical testing, improve the extraction rate of harmful gases, reduce air pollution, and make chemical testing safer.

[0014] 2. A safety protection device for chemical testing according to this utility model can conveniently guide the extracted gas into the corresponding waste processor for post-processing through a gas guide pipe.

[0015] 3. The chemical testing safety protection device of this utility model can draw air into the vacuum pump from multiple directions through the annular cavity and air inlet, thereby improving the air extraction effect.

[0016] 4. In the example of this utility model, a safety protection device for chemical testing is used in which the second contact switch is connected in series with the first contact switch on the corresponding side. Only after the two second contact switches are pressed against the detection probe can the vacuum pump be started through the first contact switch.

[0017] 5. A safety protection device for chemical inspection according to this utility model, through the spring telescopic rod, can keep the circuit of the second contact switch in the open state in the first half of the opening of the upper sealing plate, which can increase the running time of the vacuum pump and better extract the waste gas from the through hole.

[0018] 6. A safety protection device for chemical testing according to this utility model allows for easy installation of the column by opening a threaded hole in the body of the reaction vessel through an external thread.

[0019] 7. A safety protection device for chemical testing according to this utility model can improve the sealing effect between the device and the reaction vessel body through the raised edge. Attached Figure Description

[0020] Other features, objects, and advantages of this application will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0021] Figure 1 This is a schematic diagram of the structure of this utility model.

[0022] In the diagram: 1. Column; 2. Through hole; 3. Groove; 4. Electric telescopic rod; 5. Sealing plate; 6. Slot; 7. L-shaped rod; 8. Bracket; 9. First contact switch; 10. Vacuum pump; 11. Air guide pipe; 12. Annular cavity; 13. Air inlet; 14. Second contact switch; 15. Horizontal groove; 16. Spring telescopic rod; 17. Protruding edge. Detailed Implementation

[0023] The present application will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, only the parts relevant to the invention are shown in the accompanying drawings.

[0024] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0025] Example 1:

[0026] like Figure 1As shown, this embodiment provides a safety protection device for chemical testing, including a column 1. A through hole 2 is opened in the middle of the column 1. Grooves 3 are opened on the upper and lower sides of the inner wall of the through hole 2. Electric telescopic rods 4 are fixedly installed on both sides of the grooves 3. Sealing plates 5 are fixedly installed on the movable ends of the electric telescopic rods 4. The outer periphery of the sealing plates 5 is in close contact with the inner wall of the corresponding groove 3. The corresponding sealing plates 5 can be in close contact with each other. The two upper sealing plates 5 have slots 6 on opposite sides. L-shaped rods 7 are fixedly installed on opposite sides of the two lower sealing plates 5. Brackets 8 are fixedly installed on the top of both sides of the lower groove 3. First contact switches 9 are fixedly installed on the brackets 8. Air extractors 10 are embedded on both sides of the middle of the through hole 2. The air extraction ports of the air extractors 10 are connected to the inside of the through hole 2. The air outlets of the air extractors 10 are connected to the top of the column 1. The air extractors 10 are connected to the first contact switches 9 on the corresponding sides through circuit.

[0027] In this embodiment, air guide pipes 11 are fixedly installed on the air outlet of the air pump 10.

[0028] In this embodiment, an annular cavity 12 is provided around the through hole 2 inside the column 1. Several air inlets 13 are opened in the annular cavity 12 and communicate with the inside of the through hole 2. The annular cavity 12 is connected to the air extraction port of the air extractor 10.

[0029] In this embodiment, a second contact switch 14 is fixedly installed in the slot 6.

[0030] In this embodiment, horizontal slots 15 are respectively opened in the slot 6, and spring telescopic rods 16 are fixedly installed in the horizontal slots 15. The second contact switch 14 is fixedly installed at the movable end of the spring telescopic rod 16.

[0031] In this embodiment, external threads are formed on the outer periphery of the column 1.

[0032] In this embodiment, a protruding edge 17 is fixedly installed on the top of the outer periphery of the column 1.

[0033] When chemical testing is required, the column 1 is installed and sealed after penetrating the reaction vessel body. The electric telescopic rod 4 in the upper groove 3 is retracted, opening the upper sealing plate 5. The chemical testing probe is placed between the sealing plates 5. As the upper electric telescopic rod 4 extends, the chemical testing probe is clamped by the corresponding slot 6. The chemical testing probe is a mature existing technology, and the slot 6 provides a sealed clamping effect. Then, the lower electric telescopic rod 4 is retracted, opening the lower sealing plate 5, allowing the chemical testing probe to perform chemical testing inside the reaction vessel. After the inspection is completed, the lower electric telescopic rod 4 extends, and the lower sealing plate 5 closes to seal the inside of the tank 1. At the same time, when the lower sealing plate 5 moves, it drives the L-shaped rod 7 to move and presses the first contact switch 9 when the sealing plate 5 closes. At this time, the vacuum pump 10 starts and can evacuate the air inside the through hole 2. It can remove the air inside the through hole 2 and prevent some harmful gases from escaping and polluting the air after the upper sealing plate 5 is opened. Through this device, harmful gases can be prevented from escaping during chemical inspection, improving the extraction rate of harmful gases, reducing air pollution, and making chemical inspection safer.

[0034] The above description is merely a preferred embodiment of this application and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of the invention involved in this application is not limited to technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the inventive concept. For example, technical solutions formed by substituting the above features with (but not limited to) technical features with similar functions disclosed in this application.

[0035] Apart from the technical features described in the specification, the other technical features are known to those skilled in the art. To highlight the innovative features of this utility model, the other technical features will not be described in detail here.

Claims

1. A safety device for chemical inspection, comprising a column (1), characterized in that, The middle part of the column (1) is provided with a through hole (2), the upper and lower sides of the inner wall of the through hole (2) are respectively provided with a recess (3), the two sides of the recess (3) are respectively fixedly installed with an electric telescopic rod (4), the movable end of the electric telescopic rod (4) is respectively fixedly installed with a sealing plate (5), the outer periphery of the sealing plate (5) is respectively in close contact with the inner wall of the corresponding recess (3), the corresponding sealing plates (5) can be in close contact, the opposite sides of the two sealing plates (5) at the top are respectively provided with a clamping groove (6), the opposite sides of the two sealing plates (5) at the bottom are respectively fixedly installed with an L-shaped rod (7), the top of the two sides of the lower recess (3) is respectively fixedly installed with a support (8), the first contact switch (9) is respectively fixedly installed on the support (8), the two sides of the middle part of the through hole (2) are respectively embedded with an air extractor (10), the air inlet of the air extractor (10) is respectively communicated with the inside of the through hole (2), the air outlet of the air extractor (10) is respectively communicated with the top of the column (1), and the air extractor (10) is connected with the corresponding side first contact switch (9) through a circuit.

2. The safety device for chemical inspection according to claim 1, wherein The air outlet of the air extractor (10) is respectively fixedly installed with a gas guide pipe (11).

3. The safety device for chemical inspection according to claim 1, wherein The column (1) is provided with an annular cavity (12) around the through hole (2), a plurality of air inlet holes (13) are formed in the annular cavity (12) and communicated with the inside of the through hole (2), and the annular cavity (12) is connected with the air inlet of the air extractor (10).

4. The safety device for chemical inspection according to claim 1, wherein The second contact switch (14) is respectively fixedly installed in the clamping groove (6).

5. The safety device for chemical inspection according to claim 1, wherein The clamping groove (6) is respectively provided with a horizontal groove (15), the spring telescopic rod (16) is respectively fixedly installed in the horizontal groove (15), and the second contact switch (14) is respectively fixedly installed at the movable end of the spring telescopic rod (16).

6. The safety shield of claim 1 wherein, The outer periphery of the column (1) is respectively provided with an external thread.

7. The safety shield of claim 1 wherein, The top of the outer periphery of the column (1) is fixedly installed with a convex edge (17).

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