Limited space all-in-one gas detection matching assembly

Abstract

The utility model discloses a limited space all-in-one gas detection matching assembly, and relates to the technical field of limited space gas detection. The fixing disc is arranged in the airflow channel inside the installation pipe head, the axis installation hole is formed in the fixing disc, the clamping section of the PVC elastic rod is installed at the axis installation hole of the fixing disc in a limited mode, the airflow through holes are formed in the fixing disc, airflow circulation is facilitated, meanwhile, the multiple sets of curved surface protruding parts are arranged on the PVC elastic rod, and therefore the fixing disc can be used for fixing the PVC elastic rod. According to the four-in-one gas detector, the curved-surface convex part is arranged on the curved-surface convex part, the bent gas guide pipe is internally supported, and the inward-retracting curved surface and the flow-increasing channel are arranged on the curved-surface convex part, so that the flow sectional area of gas flow is ensured while the gas guide pipe is supported, and the real-time dynamic gas detection efficiency of the four-in-one gas detector is ensured; and a roller structure is movably embedded in the position, in contact with the inner wall of the gas guide tube, of the curved-surface lug boss, so that the'hard 'friction acting force caused by non-directional deformation of the gas guide tube when a technician holds the four-in-one gas detector to use the four-in-one gas detector by hand is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of confined space gas detection, and in particular to an all-in-one gas detection matching component for confined space. Background Art

[0002] When conducting gas detection in a confined space, a four-in-one gas detector is needed to detect the gas composition in the confined space. The four-in-one gas detector is generally used to detect oxygen, carbon monoxide, hydrogen sulfide and combustible gas, and now the four-in-one gas detector has built-in air pumps for inhaling airflow into the four-in-one gas detector. A hose is connected to the air inlet nozzle of the four-in-one gas detector and extended into the space for gas detection. However, during the detection, when the technician holds the four-in-one gas detector, it is easy to "bend" the connected air pipe due to the holding position and placement position of the four-in-one gas detector, especially the section of the air pipe close to the four-in-one gas detector, resulting in obstructed airflow in the air pipe, affecting the detection efficiency of the four-in-one gas detector for gases in confined spaces. Utility Model Content

[0003] In order to solve the above technical problems, the utility model provides a multi-in-one gas detection matching component for a limited space, thereby ensuring the real-time dynamic gas detection efficiency of the four-in-one gas detector.

[0004] In order to solve the above technical problems, the present invention is achieved through the following technical solutions:

[0005] The utility model provides an all-in-one gas detection matching component for a limited space. The four-in-one gas detector is equipped with an air flow suction pump, and the four-in-one gas detector is provided with an air suction nozzle. A mounting pipe head is arranged at the position of the air suction nozzle of the four-in-one gas detector. The mounting pipe head includes a connecting sleeve, an air flow channel passing through the connecting sleeve, and a fixed disk fixed in the air flow channel. An axial mounting hole is provided at the axis of the fixing disk, and a plurality of air flow holes surrounding the axial mounting hole are provided on the fixing disk, wherein the fixing disk and the connecting sleeve are an integrated structure.

[0006] A PVC elastic rod is installed at the axis mounting hole position of the fixed plate. The PVC elastic rod includes an axis body, a front end ball portion and a rear end ball portion located at one side end of the axis body. The front end ball portion is squeezed through the axis mounting hole, and the axis body between the front end ball portion and the rear end ball portion forms a locking section that matches the position of the axis mounting hole.

[0007] The PVC elastic rod is also equipped with multiple groups of curved protrusions at equal intervals, with each group of curved protrusions having no less than three parts. At least three curved protrusions in the same group are evenly spaced and distributed around the shaft body. An inward curved surface is provided at the connection position between the curved protrusion and the shaft body, and a flow-increasing channel is formed between the inward curved surfaces of two adjacent curved protrusions in the same group. A roller structure is movably embedded in the side end point of each curved protrusion that is farthest from the axis of the shaft body.

[0008] The PVC elastic rod installed on the connecting sleeve is inserted into the air guide tube. One end of the air guide tube is sleeved on the connecting sleeve. A clamp is installed on the periphery of one end of the air guide tube sleeved on the connecting sleeve.

[0009] As an optimal technical solution of the present invention: the mounting pipe head is provided with a mounting pipe groove which is connected to the suction nozzle, the outer ring side of the suction nozzle and the inner wall of the mounting pipe groove of the mounting pipe head are provided with threads which are screwed together, and a sealing gasket is also provided inside the mounting pipe groove of the mounting pipe head.

[0010] As a preferred technical solution of the present invention, the ball diameters of the front end ball portion and the rear end ball portion are larger than the hole diameter of the axial mounting hole.

[0011] As an optimal technical solution of the present invention: a roller slot is provided on the curved raised portion, and the roller structure is movably embedded in the roller slot.

[0012] As a preferred technical solution of the present invention: the arc structure formed by the cross section of the roller groove is a minor arc.

[0013] As a preferred technical solution of the present invention, the roller structure installed on the curved raised portion is in rolling contact with the inner wall of the air guide tube.

[0014] Compared with the existing technology, the beneficial effects of the utility model are:

[0015] The utility model configures a mounting tube head on the air inlet nozzle side of the four-in-one gas detector, and provides a connecting sleeve on the mounting tube head, and provides a fixing plate in the air flow channel inside the mounting tube head, and opens an axial mounting hole on the fixing plate, and the positioning section of the PVC elastic rod is limitedly installed at the position of the axial mounting hole of the fixing plate, and multiple air flow holes are opened on the fixing plate to facilitate air flow circulation, and at the same time, multiple groups of curved protrusions are provided on the PVC elastic rod to provide internal support for the bent air guide tube, and by providing an inward curved surface and a flow-increasing channel on the curved protrusion, the cross-sectional area of ​​the air flow is guaranteed while supporting the air guide tube, thereby ensuring the real-time dynamic gas detection efficiency of the four-in-one gas detector, and a roller structure is movably embedded at the position where the curved protrusion contacts the inner wall of the air guide tube, thereby reducing the "hard" friction force caused by the non-directional deformation of the air guide tube when the technician uses the four-in-one gas detector by hand. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is the whole cooperation use schematic view of the device.

[0017] Figure 2 It is the schematic view of the main component separation of the device.

[0018] Figure 3 It is the schematic view of the installation pipe head in the utility model.

[0019] Figure 4 It is the partial structure schematic view of the PVC elastic stick in the utility model.

[0020] Figure 5 It is the cross section schematic view of the PVC elastic stick and the inner wall contact of the air guide pipe in the utility model.

[0021] Figure 6 It is the cross section schematic view of the PVC elastic stick in the utility model.

[0022] Among them: 1-four in one gas detector, 101-inhale mouth; 2-installation pipe head, 201-installation pipe groove, 202-connection sleeve head, 203-air flow channel, 204-fixing disc, 205-axis installation hole, 206-air flow through hole; 3-clamp part; 4-PVC elastic stick, 401-shaft body, 402-front end ball part, 403-rear end ball part, 404-clamping section, 405-curved convex part, 4051-roller clamping groove, 4052-inner retraction curved surface, 4053-flow increasing channel, 406-roller structure; 5-air guide pipe. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical scheme and advantages of the utility model more clearly, the following is in combination with the drawings and examples, and the utility model is further described in detail.It should be understood that the specific examples described here are only used to explain the utility model, and are not used to limit the utility model.

[0024] Example one, the utility model designs a limited space multi-in-one gas detection cooperation assembly, and the mainly used equipment is four in one gas detector, wherein, four in one gas detector: four in one gas detector is a kind of instrument and meter tool for detecting multiple gas concentration, can convert the concentration of toxic and harmful gas, flammable and explosive gas and oxygen etc.into electronic equipment of electric signal.Gas detector converts physical or chemical signal collected by gas sensor into electric signal, then rectifies, filters etc.to the above electric signal by external circuit, and realizes the specific function of gas detection by the signal after these processing to control corresponding module.

[0025] A four-in-one gas detector is a multifunctional device that can simultaneously detect four different gases: oxygen (O2), combustible gases such as methane (CH4), hydrogen sulfide (H2S), and carbon monoxide (CO). The core components of these detectors are built-in gas sensors of different types, each using a specific sensing technology to detect the presence and concentration of the target gas.

[0026] Four-in-one gas detectors can detect multiple gases and provide accurate measurement results. They are usually equipped with automatic calibration and automatic compensation functions to ensure the accuracy and reliability of the test results. In addition, some high-end four-in-one gas detectors also have data logging and wireless transmission functions, which can transmit test results to remote monitoring systems in real time.

[0027] In addition, the four-in-one gas detector has a built-in air flow suction pump. The existing four-in-one gas detector with a built-in air flow suction pump is an existing product and will not be described in detail in this utility model.

[0028] The above brief introduction to the four-in-one gas detector is common knowledge in this field, and the specific detection technology and detection process do not affect the technical solution to be protected by this utility model.

[0029] Combine Figure 1 、 Figure 2 An air suction nozzle 101 is set at the air inlet end of the air pump of the four-in-one gas detector 1. The mounting pipe head 2 is fixedly installed at the position of the air suction nozzle 101 of the four-in-one gas detector 1. The mounting pipe head 2 is also connected to the air guide pipe 5 and fixed with a clamp 3. The mounting pipe head 2 is also connected to the PVC elastic rod 4, and the PVC elastic rod 4 is inserted into the air guide pipe 5.

[0030] Combine Figure 3 The mounting pipe head 2 includes a mounting pipe groove 201, a connecting sleeve 202, an air flow channel 203, a fixed plate 204, an axial mounting hole 205, and an air flow hole 206. The air flow channel 203 runs through the connecting sleeve 202, and the fixed plate 204 is fixed in the air flow channel 203. The axial mounting hole 205 is opened at the center position of the fixed plate 204. There are multiple air flow holes 206 and they are opened on the fixed plate 204 around the axial mounting hole 205. The fixed plate 204 and the connecting sleeve 202 are an integrated structure.

[0031] Combine Figure 1 、 Figure 3 、 Figure 4The PVC elastic rod 4 includes a shaft body 401, a front end ball portion 402, and a rear end ball portion 403. The front end ball portion 402 and the rear end ball portion 403 are located at one side end of the shaft body 401. During installation, the front end ball portion 402 is squeezed through the axis mounting hole 205. The shaft body 401 between the front end ball portion 402 and the rear end ball portion 403 forms a locking section 404. The locking section 404 matches the position of the axis mounting hole 205. The front end ball portion 402 and the rear end ball portion 403 are distributed on both sides of the fixed plate 204.

[0032] The ball diameters of the front end ball portion 402 and the rear end ball portion 403 are the same, and the ball diameters of the front end ball portion 402 and the rear end ball portion 403 are larger than the hole diameter of the axial mounting hole 205 .

[0033] Combine Figure 1 、 Figure 2 、 Figure 3 The outer ring side of the suction nozzle 101 and the inner wall of the installation pipe groove 201 of the installation pipe head 2 are provided with threads that are screwed together. During installation, the inner wall threads of the installation pipe groove 201 of the installation pipe head 2 are installed along the threads on the outer ring side of the suction nozzle 101. Before installation, a sealing gasket is arranged inside the installation pipe groove 201 of the installation pipe head 2.

[0034] Combine Figure 1 、 Figure 3 After installing the PVC elastic rod 4 on the connecting sleeve 202, insert the PVC elastic rod 4 into the air guide tube 5. One end of the air guide tube 5 is sleeved on the connecting sleeve 202. The clamp 3 is installed on the outer periphery of the end of the air guide tube 5 sleeved on the connecting sleeve 202.

[0035] Combine Figure 4 、 Figure 5 、 Figure 6 The PVC elastic rod 4 is also equipped with multiple groups of curved protrusions 405 at equal intervals, and the number of each group of curved protrusions 405 is not less than three. At least three curved protrusions 405 in the same group are equally spaced and distributed around the shaft body 401. An inward curved surface 4052 is provided at the connection position between the curved protrusion 405 and the shaft body 401. A flow-increasing channel 4053 is formed between the inward curved surfaces 4052 of two adjacent curved protrusions 405 in the same group. The curved protrusion 405 is provided with a roller groove 4051 facing the inner wall of the air guide tube 5, and the roller structure 406 is movably embedded in the roller groove 4051. The roller structure 406 is installed at the side end point farthest from the axial center line of the curved protrusion 405 and the shaft body 401.

[0036] Furthermore, the arc structure formed by the cross-section of roller retaining groove 4051 is a minor arc. This prevents roller structure 406 from easily falling out when inserted into roller retaining groove 4051. The roller structure 406 mounted on the curved raised portion 405 is in rolling contact with the inner wall of the airway tube 5. During actual use, especially when the airway tube 5 bends in an unpredictable manner, the rolling action of the roller structure 406 reduces the "hard" friction between the inner wall of the airway tube 5 and the curved raised portion 405, thereby preventing excessive friction and extrusion damage to the airway tube 5.

[0037] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements and improvements 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 multi-in-one gas detection assembly for a limited space, wherein the four-in-one gas detector (1) has a built-in air flow suction pump and is provided with a suction nozzle (101), characterized in that: The four-in-one gas detector (1) is provided with a mounting pipe head (2) at the position of the air inlet nozzle (101), the mounting pipe head (2) comprising a connecting sleeve (202), an air flow channel (203) penetrating the connecting sleeve (202), and a fixing plate (204) fixed in the air flow channel (203), an axial center mounting hole (205) being provided on the axis of the fixing plate (204), and a plurality of air flow holes (206) surrounding the axial center mounting hole (205) being provided on the fixing plate (204), wherein the fixing plate (204) and the connecting sleeve (202) are an integrated structure; A PVC elastic rod (4) is installed at the position of the axis mounting hole (205) of the fixed plate (204), and the PVC elastic rod (4) comprises an axis body (401), a front end ball portion (402) located at one end of the axis body (401), and a rear end ball portion (403). The front end ball portion (402) is squeezed through the axis mounting hole (205), and the axis body (401) between the front end ball portion (402) and the rear end ball portion (403) forms a locking section (404) that matches the position of the axis mounting hole (205). The PVC elastic rod (4) is also provided with multiple groups of curved surface protrusions (405) at equal intervals, each group of curved surface protrusions (405) having no less than three members, and at least three curved surface protrusions (405) in the same group are equally spaced and distributed around the shaft body (401); an inward curved surface (4052) is provided at the connection position between the curved surface protrusion (405) and the shaft body (401); a flow-increasing channel (4053) is formed between the inward curved surfaces (4052) of two adjacent curved surface protrusions (405) in the same group; and a roller structure (406) is movably embedded in the side end point of each curved surface protrusion (405) that is farthest from the axis of the shaft body (401); The PVC elastic rod (4) installed on the connecting sleeve (202) is inserted into the air guide tube (5). One end of the air guide tube (5) is sleeved on the connecting sleeve (202). A clamp (3) is installed on the periphery of the end of the air guide tube (5) sleeved on the connecting sleeve (202).

2. The all-in-one gas detection assembly for a limited space according to claim 1, characterized in that: The mounting pipe head (2) is provided with a mounting pipe groove (201) that is connected to the air suction nozzle (101), and the outer ring side surface of the air suction nozzle (101) and the inner wall of the mounting pipe groove (201) of the mounting pipe head (2) are provided with threads that are screwed together; A sealing gasket is also provided inside the mounting pipe groove (201) of the mounting pipe head (2).

3. The all-in-one gas detection assembly for a confined space according to claim 1, characterized in that: The ball diameters of the front end ball portion (402) and the rear end ball portion (403) are larger than the hole diameter of the axial center mounting hole (205).

4. The all-in-one gas detection assembly for a confined space according to claim 1, characterized in that: The curved raised portion (405) is provided with a roller slot (4051), and the roller structure (406) is movably embedded and installed at the position of the roller slot (4051).

5. The all-in-one gas detection assembly for a limited space according to claim 4, characterized in that: The arc structure formed by the cross section of the roller clamping groove (4051) is a minor arc.

6. The all-in-one gas detection assembly for a confined space according to claim 1, characterized in that: The roller structure (406) mounted on the curved raised portion (405) is in rolling contact with the inner wall of the air guide tube (5).

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