Sealing structure of limited space environment monitoring terminal

Abstract

The utility model relates to the technical field of environment monitoring, and discloses a sealing structure of a limited space environment monitoring terminal, which comprises a monitoring terminal body, a first protective shell and a second protective shell, the first protective shell and the second protective shell are sleeved on the outer side of the monitoring terminal body, and the first protective shell and the second protective shell form a protective shell which completely wraps the monitoring terminal body. The surface of the top of the first protective shell and the surface of the bottom of the second protective shell are fixedly connected with connecting blocks. According to the utility model, the first sealing assembly is combined with the first protection housing and the second protection housing for use, so that the first protection housing and the second protection housing can be sealed in the assembling process; when the first protective shell and the second protective shell are assembled, the first annular pressing strip and the sealing ring in the first annular pressing strip are firstly used for primary filling sealing, and the filling sealing layer synchronously extrudes the first annular pressing strip and the sealing ring for secondary extrusion sealing in the later assembly period of the first protective shell and the second protective shell, so that the connection sealing effect of the first protective shell and the second protective shell is fully guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of environmental monitoring, in particular to a sealing structure of a limited space environmental monitoring terminal. Background Art

[0002] As one of the confined space environment monitoring terminals, the pump-suction smart pit monitor is a high-performance gas analysis sensor device. When in use, it can be based on tunable laser absorption spectroscopy technology or high-sensitivity semiconductor diaphragm technology, and adopts high-performance probes and special process gas chambers to achieve high-efficiency gas analysis. It has the characteristics of high precision, high sensitivity, long life, stable performance, etc. It uses a temperature compensation algorithm, is not affected by the use environment, can work stably in harsh working conditions and complex gas environments, and has a wide range of uses.

[0003] However, during the process of assembling and using the pump-suction smart pit monitor, the applicant discovered that although the two protective shells of the monitoring terminal (monitor) can be stably installed by multiple screws, the sealing structure between the two protective shells is only a single sealing ring structure, and the sealing effect is general. There are still certain limitations on its applicability in some humid usage environments. Therefore, in response to the above-mentioned problems of the prior art, the applicant, after research and experiments, will provide a sealing structure for a limited space environment monitoring terminal to solve the problem. Utility Model Content

[0004] In view of the deficiencies of the prior art, the utility model provides a sealing structure for a limited space environment monitoring terminal, which solves the problems raised by the above-mentioned background technology.

[0005] The utility model provides the following technical solutions: a sealing structure of a limited space environment monitoring terminal, comprising a monitoring terminal body, a first protective shell and a second protective shell sleeved on the outside of the monitoring terminal body, wherein the first protective shell and the second protective shell form a protective shell that fully covers the monitoring terminal body, the surface of the top of the first protective shell and the surface of the bottom of the second protective shell are both fixedly connected with connecting blocks, and two adjacent connecting blocks are installed by screws, an annular groove is provided on the top end surface of the first protective shell, and a sealing structure for filling the connection gap between the top of the first protective shell and the bottom of the second protective shell is sleeved in the annular groove;

[0006] The sealing structure is configured as a first sealing component, and the first sealing component consists of a first annular strip and a sealing ring, the top of the first annular strip is fixedly connected to the bottom end face of the second protective shell, the sealing ring is clamped in the annular groove, and the bottom of the first annular strip is clamped in the annular groove and can press and fit the sealing ring.

[0007] Preferably, the number of connecting blocks provided at the bottom of the second protective housing is the same as that of the connecting blocks provided at the top of the first sealing assembly, and is not less than two. A counterbore for complete sleeving of the thread is provided in the connecting block at the bottom of the second protective housing, and a threaded hole aligned with the counterbore is provided in the connecting block at the top of the first sealing assembly to avoid structural interference.

[0008] Preferably, a filling and sealing layer is filled in the connecting gap between the surface of the sealing ring and the inner wall of the annular relief groove. The filling and sealing layer is specifically made of waterproof glue, thereby further improving the sealing effect of the first sealing assembly.

[0009] Preferably, the sealing structure is set as a second sealing assembly. The second sealing assembly includes a second annular pressing strip, a semi-open hollow sealing ring, and two annular air bags. The semi-open hollow sealing ring is nested in the annular relief groove, and the top surfaces of the inner ring structure and the outer ring structure of the semi-open hollow sealing ring are both fitted and connected to the end surface at the bottom of the second protective housing.

[0010] Preferably, an annular assembly groove is provided inside the middle of the semi-open hollow sealing ring. The surfaces of the two annular air bags are respectively adhesively connected to the inner walls of the inner and outer circles of the annular assembly groove. The top of the second annular pressing strip is fixedly connected to the end surface at the bottom of the second protective housing, and the bottom of the second annular pressing strip is clamped between the two annular air bags, thereby achieving a multi-layer sealing effect on the second protective housing and the first protective housing.

[0011] Preferably, the bottom of the second annular pressing strip is a tapered tube structure and is sleeved between the two annular air bags to press the tops of the two annular air bags, causing the tops of the two annular air bags to deform and press against the inner wall of the structure where the semi-open hollow sealing ring is connected to the second protective housing, further improving the connection sealing effect between the semi-open hollow sealing ring and the second protective housing.

[0012] Preferably, an annular folding spring is fixedly sleeved inside each of the two annular air bags. The annular folding spring is in a compressed state, thereby improving the deformation sealing effect of the annular air bag.

[0013] Compared with the prior art, the present utility model has the following beneficial effects:

[0014] 1. The present utility model is used in combination with the first protective housing and the second protective housing through the provided first sealing assembly. Thus, during the assembly process of the first protective housing and the second protective housing, first, the first annular pressing strip and the sealing ring inside the first annular pressing strip are used for preliminary filling and sealing. And in the later stage of the assembly of the first protective housing and the second protective housing, the filling and sealing layer synchronously presses the first annular pressing strip and the sealing ring for secondary extrusion sealing, fully ensuring the connection sealing effect between the first protective housing and the second protective housing.

[0015] 2. The second sealing component provided by the present utility model is used in combination with the first protective housing and the second protective housing. Thus, during the assembly process of the first protective housing and the second protective housing, the second annular pressing strip inside the second sealing component moves synchronously with the second protective housing and engages with the inside of the second annular pressing strip. Moreover, due to the conical tube structure at the bottom of the second annular pressing strip, the bottom of the second annular pressing strip will synchronously press against the two semi-open hollow sealing rings, deforming the tops of the two annular airbags and applying pressure to the inner wall of the structure where the semi-open hollow sealing ring is connected to the second protective housing, further enhancing the sealing effect of the connection between the semi-open hollow sealing ring and the second protective housing while achieving multiple sealing effects at the connection between the first protective housing and the second protective housing. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a front view schematic diagram of the first protective housing of the structure of the present utility model;

[0017] Figure 2 is a partially enlarged schematic diagram of the second protective housing of the structure of the present utility model;

[0018] Figure 3 is a partially sectional schematic diagram of the first protective housing of the structure of the present utility model;

[0019] Figure 4 is a partially sectional schematic diagram of the first sealing component of the structure of the present utility model;

[0020] Figure 5 is a partially sectional schematic diagram of the second protective housing of the structure of the present utility model;

[0021] Figure 6 is a partially sectional schematic diagram of the second sealing component of the structure of the present utility model;

[0022] Figure 7 is the structure of the present utility model Figure 6 and is an enlarged schematic diagram of part A therein.

[0023] In the figure: 1. First protective housing; 2. Second protective housing; 3. First sealing component; 31. First annular pressing strip; 32. Sealing ring; 33. Filling sealing layer; 4. Second sealing component; 41. Second annular pressing strip; 42. Semi-open hollow sealing ring; 43. Annular airbag; 44. Annular folding spring. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0025] Embodiment 1

[0026] Please refer to Figures 1-4 , the sealing structure of the limited space environment monitoring terminal, including the monitoring terminal body, the first protective shell 1 and the second protective shell 2 sleeved on the outside of the monitoring terminal body. The first protective shell 1 and the second protective shell 2 form a protective shell that completely covers the monitoring terminal body. Connecting blocks are fixedly connected to the surfaces of the top of the first protective shell 1 and the bottom of the second protective shell 2, and adjacent two connecting blocks are installed by screws. An annular relief groove is opened on the top end face of the first protective shell 1, and a sealing structure for filling the connection gap between the top of the first protective shell 1 and the bottom of the second protective shell 2 is sleeved in the annular relief groove;

[0027] The number of connecting blocks provided at the bottom of the second protective shell 2 is the same as and not less than two of the connecting blocks provided at the top of the first sealing assembly 3, and a countersunk hole for completely sleeving the thread is opened in the connecting block provided at the bottom of the second protective shell 2, and a threaded hole aligned with the countersunk hole is opened in the connecting block provided at the top of the first sealing assembly 3 to avoid structural interference;

[0028] The sealing structure is set as the first sealing assembly 3, and the first sealing assembly 3 is composed of a first annular pressing strip 31 and a sealing ring 32. The top of the first annular pressing strip 31 is fixedly connected to the bottom end face of the second protective shell 2. The sealing ring 32 is clamped in the annular relief groove. The bottom of the first annular pressing strip 31 is clamped in the annular relief groove and can press-fit the sealing ring 32. A filling sealing layer 33 is filled in the connection gap between the surface of the sealing ring 32 and the inner wall of the annular relief groove. The filling sealing layer 33 is specifically a waterproof adhesive, thereby further improving the sealing effect of the first sealing assembly 3.

[0029] Working principle: When in use, the first protective housing 1 and the second protective housing 2 are assembled through a plurality of connecting blocks and the corresponding number of screws to fully wrap the monitoring terminal body. Before the assembly connection process between the first protective housing 1 and the second protective housing 2, the connection gap between the sealing ring 32 and the inner wall of the annular recess in the first protective housing 1 is first filled with a filling and sealing layer 33. Then, during the further assembly process of the first protective housing 1 and the second protective housing 2, the first annular pressing strip 31 moves synchronously with the second protective housing 2 and is clamped in the annular recess to extrude the sealing ring 32, further improving the sealing effect, thereby fully ensuring the assembly sealing effect between the first protective housing 1 and the second protective housing 2.

[0030] Embodiment 2

[0031] Please refer to Figures 1-2 , Figures 5-7 , a sealing structure of a limited space environment monitoring terminal, including a monitoring terminal body, a first protective housing 1 and a second protective housing 2 sleeved on the outside of the monitoring terminal body. The first protective housing 1 and the second protective housing 2 form a protective shell that fully wraps the monitoring terminal body. Connecting blocks are fixedly connected to the surfaces of the top of the first protective housing 1 and the bottom of the second protective housing 2, and adjacent two connecting blocks are installed through screws. An annular recess is formed in the top end face of the first protective housing 1, and a sealing structure for filling the connection gap between the top of the first protective housing 1 and the bottom of the second protective housing 2 is sleeved in the annular recess;

[0032] The number of connecting blocks provided at the bottom of the second protective housing 2 is the same as and not less than two of the connecting blocks provided at the top of the first sealing assembly 3. A countersunk hole for fully sleeving the thread is formed in the connecting block provided at the bottom of the second protective housing 2, and a threaded hole aligned with the countersunk hole is formed in the connecting block provided at the top of the first sealing assembly 3 to avoid structural interference;

[0033] The sealing structure is set as a second sealing assembly 4. The second sealing assembly 4 includes a second annular pressing strip 41, a semi-open hollow sealing ring 42, and two annular airbags 43. The semi-open hollow sealing ring 42 is nested in the annular recess, and the top surfaces of the inner ring structure and the outer ring structure of the semi-open hollow sealing ring 42 are respectively adhered to the bottom end face of the second protective housing 2. An annular assembly groove is formed in the inner side of the middle of the semi-open hollow sealing ring 42, and the surfaces of the two annular airbags 43 are respectively adhesively connected to the inner walls of the inner and outer circles of the annular assembly groove. The top of the second annular pressing strip 41 is fixedly connected to the bottom end face of the second protective housing 2, and the bottom of the second annular pressing strip 41 is clamped between the two annular airbags 43, thereby achieving a multi-layer sealing effect on the second protective housing 2 and the first protective housing 1;

[0034] The bottom of the second annular pressing strip 41 is a tapered tube structure and is sleeved between two annular air bags 43, pressing against the tops of the two annular air bags 43, deforming the tops of the two annular air bags 43 and pressing them against the inner wall of the structure where the semi-open hollow sealing ring 42 is connected to the second protective housing 2, further enhancing the connection sealing effect between the semi-open hollow sealing ring 42 and the second protective housing 2. An annular folding spring 44 is fixedly sleeved inside each of the two annular air bags 43, and the annular folding spring 44 is in a compressed state, thereby enhancing the deformation sealing effect of the annular air bag 43.

[0035] Working principle: During use, the first protective housing 1 and the second protective housing 2 are assembled through multiple connecting blocks and the corresponding number of screws to fully wrap the monitoring terminal body. During the assembly connection process of the first protective housing 1 and the second protective housing 2, the second annular pressing strip 41 moves synchronously with the second protective housing 2 and is clamped inside the second annular pressing strip 41. Due to the tapered tube structure at the bottom of the second annular pressing strip 41, the bottom of the second annular pressing strip 41 will simultaneously press against the two semi-open hollow sealing rings 42, deforming the tops of the two annular air bags 43 and pressing them against the inner wall of the structure where the semi-open hollow sealing ring 42 is connected to the second protective housing 2, further enhancing the connection sealing effect between the semi-open hollow sealing ring 42 and the second protective housing 2 while achieving a multiple sealing effect at the connection between the first protective housing 1 and the second protective housing 2.

[0036] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device. At the same time, in the drawings of the present utility model, the filling patterns are only for distinguishing layers and are not subject to any other limitations.

[0037] Although the embodiments of the present utility model have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. Sealing structure of a confined space environment monitoring terminal, comprising a monitoring terminal body, a first protective housing (1) and a second protective housing (2) sleeved on the outside of the monitoring terminal body, characterized in that: The first protective housing (1) and the second protective housing (2) form a protective housing that comprehensively wraps the monitoring terminal body. Connecting blocks are fixedly connected to the surfaces of the top of the first protective housing (1) and the bottom of the second protective housing (2), and adjacent two connecting blocks are installed by screws. An annular relief groove is formed in the top end face of the first protective housing (1), and a sealing structure for filling the connection gap between the top of the first protective housing (1) and the bottom of the second protective housing (2) is sleeved in the annular relief groove; The sealing structure is set as the first sealing assembly (3), and the first sealing assembly (3) is composed of a first annular pressing strip (31) and a sealing ring (32). The top of the first annular pressing strip (31) is fixedly connected to the bottom end face of the second protective housing (2). The sealing ring (32) is clamped in the annular relief groove. The bottom of the first annular pressing strip (31) is clamped in the annular relief groove and can press-fit the sealing ring (32).

2. The sealing structure of the limited space environment monitoring terminal according to claim 1, wherein: The number of the connecting blocks arranged at the bottom of the second protective housing (2) and the number of the connecting blocks arranged at the top of the first sealing assembly (3) are the same and are not less than two. A countersunk hole for completely sleeving the thread is formed in the connecting block arranged at the bottom of the second protective housing (2), and a threaded hole aligned with the countersunk hole is formed in the connecting block arranged at the top of the first sealing assembly (3).

3. The sealing structure of the limited space environment monitoring terminal according to claim 1, characterized in that: A filling and sealing layer (33) is filled in the connection gap between the surface of the sealing ring (32) and the inner wall of the annular relief groove. The filling and sealing layer (33) is specifically made of waterproof glue.

4. The sealing structure of the confined space environment monitoring terminal according to claim 1, wherein: The sealing structure is set as the second sealing assembly (4). The second sealing assembly (4) includes a second annular pressing strip (41), a semi-open hollow sealing ring (42), and two annular air bags (43). The semi-open hollow sealing ring (42) is nested in the annular relief groove, and the top surfaces of the inner ring structure and the outer ring structure of the semi-open hollow sealing ring (42) are respectively attached and connected to the bottom end face of the second protective housing (2).

5. The sealing structure of the limited space environment monitoring terminal according to claim 4, characterized in that: An annular assembly groove is formed in the inner side of the middle of the semi-open hollow sealing ring (42). The surfaces of the two annular air bags (43) are respectively adhesively connected to the inner walls of the inner and outer circles of the annular assembly groove. The top of the second annular pressing strip (41) is fixedly connected to the bottom end face of the second protective housing (2), and the bottom of the second annular pressing strip (41) is clamped between the two annular air bags (43).

6. The sealing structure of the confined space environment monitoring terminal according to claim 4, wherein: The bottom of the second annular pressing strip (41) is a tapered tube structure and is sleeved between the two annular air bags (43) to press the tops of the two annular air bags (43), so that the tops of the two annular air bags (43) are deformed and press on the inner wall of the structure where the semi-open hollow sealing ring (42) is connected to the second protective housing (2).

7. The sealing structure of the limited space environment monitoring terminal according to claim 4, characterized in that: An annular folding spring (44) is fixedly sleeved inside each of the two annular air bags (43), and the annular folding spring (44) is in a compressed state.

Images