Waterproof structure of chemical instrument

Abstract

The utility model relates to a chemical instrument waterproof structure, and belongs to the technical field of chemical instruments. Comprising a pipeline, and the outer side face of the top of the pipeline communicates with a connecting pipe; the chemical instrument is assembled at the top end of the connecting pipe through threads of a threaded pipe; the containing groove is formed in the top end of the connecting pipe, and a sealing mechanism is arranged in the containing groove and used for improving the assembly sealing performance between the chemical instrument and the connecting pipe, so that through the structural design, the assembly sealing performance and stability between the chemical instrument and the connecting pipe can be improved, and therefore the waterproof performance of the chemical instrument is improved; and external water or moisture in air is prevented from entering the interior of the connecting pipe.

Description

Technical Field

[0001] The utility model relates to the technical field of chemical instruments, in particular to a waterproof structure for chemical instruments. Background Art

[0002] Chemical instruments are instruments that automatically detect, display and control various variables (such as temperature, pressure, liquid level, flow, composition, etc.) in production processes such as chemical and oil refining. Chemical instruments are also commonly known as industrial automation instruments or process detection and control instruments. They are used for chemical process control and are automated technical tools for detecting and controlling chemical process parameters.

[0003] At present, most of the existing chemical instruments are used for the detection of corrosive raw materials, so the sealing rings are prone to corrosion, and most of them are threaded connections, which are easy to loosen, resulting in poor sealing and affecting the waterproof effect of the chemical instruments.

[0004] For example, the existing patent announcement number CN220118899U provides a waterproof structure for a chemical instrument, which includes a connecting pipe, the top of which is fixedly connected to a mounting pipe, the top of which is provided with a groove, the bottom inner wall of the groove is provided with a threaded hole, a first threaded pipe is inserted into the threaded hole, the top of the first threaded pipe is fixedly connected to a through-hole pipe, the top of the through-hole pipe is fixedly connected to the chemical instrument body, the circumferential outer wall of the through-hole pipe is fixedly connected to a limit plate, the top of the limit plate is provided with a first slot, the outer wall of the through-hole pipe is sleeved with a polytetrafluoroethylene sealing gasket, the polytetrafluoroethylene sealing gasket is located above the limit plate, and the bottom and top of the polytetrafluoroethylene sealing gasket are fixedly connected with a plurality of ridges. The utility model prevents the polytetrafluoroethylene sealing gasket from deviating by engaging the ridges of the polytetrafluoroethylene sealing gasket with the first and second slots, thereby improving the sealing performance of the polytetrafluoroethylene sealing gasket and further improving the waterproof performance of the chemical instrument.

[0005] However, the device still has certain deficiencies in use. The device lacks protection for the connection between chemical instruments and pipelines. During long-term use, moisture in the external air may enter the connection, causing corrosion of components. Summary of the Invention

[0006] The technical problem to be solved by the utility model is to provide a waterproof structure for chemical instruments, so as to solve the problem of protecting the connection between chemical instruments and pipelines.

[0007] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0008] A waterproof structure for a chemical instrument comprises a connecting pipe connected to the top outer side of a pipeline. The chemical instrument is threadedly assembled on the top of the connecting pipe through a threaded pipe. The top of the connecting pipe is provided with a receiving groove, and the interior of the receiving groove is provided with a sealing mechanism. The sealing mechanism is used to increase the sealing performance of the assembly between the chemical instrument and the connecting pipe.

[0009] The sealing mechanism mentioned above includes three limiting strips fixedly connected to the receiving groove. The interior of the receiving groove is equipped with a sealing sleeve, and the outer side of the sealing sleeve is provided with three card slots adapted to the limiting strips.

[0010] The sealing mechanism further comprises an elastic sleeve placed on the top of the sealing sleeve.

[0011] The top of the elastic sleeve protrudes from the top opening of the accommodating groove.

[0012] A turntable is fixedly connected to the middle of the threaded pipe for users to rotate the threaded pipe.

[0013] The bottom of the turntable and the top of the connecting pipe are both provided with placement notches, and a sealing ring is sleeved between the two placement notches.

[0014] The outer side surface of the connecting pipe is fixedly connected with a first clamping sleeve, the outer side surface of the turntable is sleeved with a second clamping sleeve, and the first clamping sleeve and the second clamping sleeve are fixedly connected by bolts.

[0015] The top of the first ferrule of the connecting pipe is provided with a notch, and the bottom of the second ferrule is fixed with a sealing sleeve which is inserted into the notch.

[0016] The utility model provides a waterproof structure for chemical instruments. The structure comprises the following steps: inserting and fixing a sealing sleeve between three limiting strips, then placing an elastic sleeve on the top of the sealing sleeve, then passing a threaded pipe through the connecting pipe, and rotating the threaded pipe so that the threaded pipe and the connecting pipe are threadedly assembled, and a turntable on the threaded pipe squeezes the elastic sleeve to squeeze and seal the top opening of the connecting pipe. When the turntable contacts the connecting pipe, the sealing ring is sleeved between the two placement notches, and after the sealing ring is sleeved, it elastically deforms, thereby further sealing the contact between the turntable and the connecting pipe. Through this structural design, the sealing and stability of the assembly between the chemical instrument and the connecting pipe can be increased, thereby improving the waterproof performance of the chemical instrument and reducing the ingress of external water or moisture in the air into the interior of the connecting pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0018] Figure 1 This is a structural diagram of a waterproof structure for a chemical instrument in Example 1 of the present utility model;

[0019] Figure 2This is a schematic diagram of the structure of the pipeline and chemical instrument in the first embodiment of the present utility model;

[0020] Figure 3 This is a schematic structural diagram of a cross-section of a waterproof structure of a chemical instrument in the first embodiment of the present utility model;

[0021] Figure 4 This is a schematic structural diagram of the sealing mechanism in Example 1 of the present utility model;

[0022] Figure 5 It is a structural schematic diagram of the first ferrule and the second ferrule in the second embodiment of the present invention.

[0023] In the figure: pipeline 1; connecting pipe 2; chemical instrument 3; threaded pipe 4; receiving groove 5; sealing mechanism 6; limiting strip 600; sealing sleeve 601; elastic sleeve 602; rotating disk 7; placement notch 8; sealing ring 9; first ferrule 10; second ferrule 11; notch 12; closing sleeve 13. DETAILED DESCRIPTION

[0024] The following is combined with Figures 1 to 5 The utility model is described in further detail.

[0025] Example 1:

[0026] The present utility model discloses a waterproof structure for chemical instruments. Figures 1 to 4 A waterproof structure for chemical instruments includes a pipeline 1, the top outer side of the pipeline 1 is connected to a connecting pipe 2; a chemical instrument 3 is a pressure gauge or a flow meter, which is threadedly assembled on the top of the connecting pipe 2 through a threaded pipe 4; a receiving groove 5 is opened at the top of the connecting pipe 2, and a sealing mechanism 6 is provided inside the receiving groove 5 for increasing the sealing performance of the assembly between the chemical instrument 3 and the connecting pipe 2.

[0027] Specifically, the sealing mechanism 6 includes three limiting strips 600 fixedly connected to the receiving groove 5. The interior of the receiving groove 5 is equipped with a sealing sleeve 601 made of polytetrafluoroethylene, and the outer side of the sealing sleeve 601 is provided with three card slots adapted to the limiting strips 600.

[0028] Specifically, the sealing mechanism 6 further includes an elastic sleeve 602 placed on top of the sealing sleeve 601 .

[0029] Specifically, the top of the elastic sleeve 602 protrudes from the top opening of the accommodating groove 5, and the elastic sleeve 602 is made of rubber.

[0030] Specifically, a turntable 7 is fixedly connected to the middle of the threaded tube 4 for users to rotate the threaded tube 4.

[0031] Specifically, a placement notch 8 is provided at the bottom of the turntable 7 and the top of the connecting pipe 2 , and a sealing ring 9 is sleeved between the two placement notches 8 . The sealing ring 9 is made of rubber.

[0032] Insert and fix the sealing sleeve 601 between the three limiting bars 600, then place the elastic sleeve 602 on the top of the sealing sleeve 601, then insert the threaded tube 4 into the connecting tube 2, and rotate the threaded tube 4 so that the threaded tube 4 and the connecting tube 2 are threadedly assembled, and the turntable 7 on the threaded tube 4 will squeeze the elastic sleeve 602 to squeeze and seal the top opening of the connecting tube 2. When the turntable 7 contacts the connecting tube 2, the sealing ring 9 is placed between the two placement notches 8, and after the sealing ring 9 is put on, it will elastically deform, thereby further sealing the contact between the turntable 7 and the connecting tube 2. Through this structural design, the sealing and stability of the assembly between the chemical instrument 3 and the connecting tube 2 can be increased, thereby improving the waterproof performance of the chemical instrument 3 and reducing the external water or moisture in the air from entering the interior of the connecting tube 2.

[0033] Example 2

[0034] This embodiment is further optimized based on the above embodiment, and the parts that are the same as the above technical solutions will not be repeated here. Figure 5 As shown, in order to better realize the present utility model, the following setting method is particularly adopted: in this embodiment, the outer side surface of the connecting pipe 2 is fixedly connected with a first ferrule 10, and the outer side surface of the turntable 7 is sleeved with a second ferrule 11, and the first ferrule 10 and the second ferrule 11 are fixedly connected by bolts; a recess 12 is provided on the top of the first ferrule 10, and a closing sleeve 13 is fixedly connected to the bottom of the second ferrule 11, and the closing sleeve 13 is inserted into the recess 12. After the chemical instrument 3 is assembled, the second ferrule 11 is placed on the top of the first ferrule 10, and ensure that the closing sleeve 13 is inserted into the recess 12, and then the bolts are assembled between the first ferrule 10 and the second ferrule 11. Through this structural design, the sealing ring 9 can be wrapped for protection, which can reduce external damage to the sealing ring 9.

[0035] The standard parts used in this utility model can all be purchased from the market, and special-shaped parts can be customized according to the description in the specification and the drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the existing technology. The machinery, parts and equipment all adopt conventional models in the existing technology, and the circuit connection adopts the conventional connection method in the existing technology, which will not be described in detail here.

[0036] In the description of this utility model, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. "Multiple" means two or more, unless otherwise specifically defined.

[0037] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, indirect connection through an intermediate medium, internal communication between two components, or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0038] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0039] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and the features of different embodiments or examples without contradiction.

[0040] In the drawings of the embodiments disclosed in the present invention, only the structures related to the embodiments disclosed in the present invention are involved. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of the present invention can be combined with each other.

[0041] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A chemical instrument waterproof structure, comprising a connecting pipe (2) connected to the top outer side of a pipeline (1), a chemical instrument (3) threadedly assembled on the top of the connecting pipe (2) through a threaded pipe (4), characterized in that: A receiving groove (5) is provided at the top end of the connecting pipe (2), and a sealing mechanism (6) is provided inside the receiving groove (5). The sealing mechanism (6) is used to increase the sealing performance of the assembly between the chemical instrument (3) and the connecting pipe (2); The sealing mechanism (6) comprises three limiting strips (600) fixedly connected to the receiving groove (5); a sealing sleeve (601) is assembled inside the receiving groove (5); and three slots adapted to the limiting strips (600) are provided on the outer side of the sealing sleeve (601).

2. A chemical instrument waterproof structure according to claim 1, characterized in that: The sealing mechanism (6) further comprises an elastic sleeve (602) placed on top of the sealing sleeve (601).

3. A chemical instrument waterproof structure according to claim 2, characterized in that: The top of the elastic sleeve (602) protrudes from the top opening of the accommodating groove (5).

4. A chemical instrument waterproof structure according to claim 1, characterized in that: A turntable (7) is fixedly connected to the middle of the threaded tube (4) for users to rotate the threaded tube (4).

5. A chemical instrument waterproof structure according to claim 4, characterized in that: The bottom of the rotating disk (7) and the top of the connecting pipe (2) are both provided with placement notches (8), and a sealing ring (9) is sleeved between the two placement notches (8).

6. A chemical instrument waterproof structure according to claim 4, characterized in that: The outer side surface of the connecting pipe (2) is fixedly connected with a first clamping sleeve (10), the outer side surface of the rotating disk (7) is sleeved with a second clamping sleeve (11), and the first clamping sleeve (10) and the second clamping sleeve (11) are fixedly connected by bolts.

7. A chemical instrument waterproof structure according to claim 6, characterized in that: The top of the first ferrule (10) of the connecting pipe (2) is provided with a notch (12), and the bottom of the second ferrule (11) is fixedly connected with a sealing sleeve (13), which is inserted into the notch (12).

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