Effective gas delivery device for pump and trap detector

Abstract

The utility model discloses effective gas conveying device for pump suction type detector, include: detection subassembly, including detector body and the micro -vacuum suction pump of detector body inside installation, connecting mechanism, install in the input of detector body in detection subassembly, be used for realizing the improvement connection strength, wherein, connecting mechanism includes with micro -vacuum suction pump screw thread setting's connecting pipe. The utility model first spring and second spring respectively push first sphere and second sphere in plugging subassembly and adhere to the both ends of gas pipe, when support pipe is not completely connected, the pre -tightening force of spring makes sphere automatic closing pipe mouth, realizes dynamic sealing, on the contrary, when support pipe and knob are completely connected, sphere will make spring contract under the extrusion of gas pipe, and then gas can be through the gas hole of gas pipe and carry out gas conveying, therefore, this mechanism not only has improved the connection strength, also has guaranteed the reliability of gas conveying and the accuracy of detection data.

Description

Technical Field

[0001] This utility model relates to the field of industrial safety technology, and in particular to an effective gas delivery device for pump-suction detectors. Background Technology

[0002] A pump-suction gas detector is a device that uses a built-in pump to extract a sample of the gas to be tested and then uses a specific sensor to detect and analyze the gas. It can actively extract air samples, detect the concentration of a specific gas using a highly sensitive sensor, and display the results on a screen in real time. Pump-suction gas detectors are widely used in industrial safety, environmental monitoring, medical and health, and emergency rescue fields, and are characterized by high precision, rapid response, remote sampling, and versatility.

[0003] During the gas delivery and testing process of a pump-type detector, frequent connection and disconnection of the gas tube and the testing instrument can easily lead to loose connections, which in turn can cause gas leaks, unstable test data, and equipment damage, seriously affecting the gas delivery effect and test accuracy. Utility Model Content

[0004] One objective of this invention is to provide an effective gas delivery device for pump-suction detectors. This invention addresses the problem mentioned in the background that frequent connection between the gas tube and the detector during gas delivery testing in pump-suction detectors can easily lead to loose connections, resulting in gas leaks, unstable test data, and equipment damage, which seriously affects the gas delivery effect and test accuracy.

[0005] An effective gas delivery device for a pump-suction detector according to an embodiment of the present invention includes: The detection assembly includes the detector body and a miniature vacuum suction pump installed inside the detector body; A connecting mechanism is installed at the input end of the detector body in the detection assembly to improve the connection strength. The connecting mechanism includes a connecting pipe threaded to a miniature vacuum suction pump. A positioning tube is threaded on the upper end of the outer side of the connecting pipe. The positioning tube is rotatably located inside a knob. A support tube is threaded on the upper end inside the knob. A connecting pipe is threaded on the top of the support tube. A gas leakage prevention sealing assembly is provided between the connecting pipe and the connecting pipe. The filter assembly, installed at the slot at the bottom of the connecting pipe in the connection mechanism, is used to ensure the purity of the gas sample.

[0006] Preferably, a display terminal and an indicator light are respectively provided on one side of the detector body.

[0007] Preferably, the miniature vacuum pump is a diaphragm vacuum pump, model HX-07DCB4.

[0008] Preferably, the knob is located at the input end of the detector body.

[0009] Preferably, the top of the connecting pipe is threaded with an air inlet pipe.

[0010] Preferably, the sealing assembly includes a first spring fixed in the top groove of the connecting pipe and a second spring fixed in the bottom groove of the connecting pipe. A first ball is installed on the top of the first spring and a second ball is installed on the bottom of the second spring. An air supply pipe is provided between the positioning pipe and the support pipe by a retaining ring.

[0011] Preferably, the first sphere and the second sphere correspond to the two ends of the gas transmission pipe, respectively.

[0012] Preferably, the filter assembly includes a fixing plate positioned between the connecting pipe and the second spring, and a filter screen is fixedly disposed inside the fixing plate.

[0013] The beneficial effects of this utility model are: This invention effectively avoids the problems of loose connection, gas leakage, and unstable test data caused by frequent insertion and connection of the air tube and the testing instrument through the designed connecting mechanism. In use, the connecting tube is threadedly connected to the micro vacuum suction pump and the positioning tube respectively. The positioning tube is connected to the knob for rotation. Finally, the air inlet tube is tightly connected to the connecting tube in the connecting mechanism, so that the air delivery tube is precisely pressed between the connecting tube and the connecting tube by the retaining ring, achieving a firm connection and avoiding loosening caused by frequent insertion and connection. In the sealing component, the first spring and the second spring respectively push the first ball and the second ball to press tightly against both ends of the air delivery tube. When the support tube is not fully connected, the preload of the spring causes the ball to automatically close the tube opening, achieving dynamic sealing. Conversely, when the support tube and the knob are fully connected, the ball will compress the spring under the pressure of the air delivery tube, so that the gas can be delivered through the air hole opened on the air delivery tube. Therefore, this mechanism not only improves the connection strength, but also ensures the reliability of gas delivery and the accuracy of test data. This invention effectively avoids the problem of impurities in gas samples affecting detection accuracy by setting up a filter component. When gas enters the connecting pipe through the inlet pipe, the filter screen in the fixed plate intercepts the airflow, blocking impurities and dust in the gas, so that the gas is deeply purified before entering the miniature vacuum suction pump. The filter screen is installed without gaps through the interference fit between the fixed plate and the groove of the connecting pipe. The second spring supports the filter screen component while offsetting the impact vibration of the airflow, ensuring the long-term adhesion between the filter material and the pipe wall, thereby achieving the purification of the sample during gas transportation, thus effectively improving the overall performance and detection quality of the pump suction detector. Attached Figure Description

[0014] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings: Figure 1 This is a three-dimensional structural diagram of one side of the effective gas delivery device for the pump-suction detector proposed in this utility model; Figure 2 This is a schematic diagram of the structure of a miniature vacuum suction pump, which is an effective gas delivery device for a pump-suction detector proposed in this utility model. Figure 3 This is a cross-sectional structural schematic diagram of the effective gas delivery device for a pump-suction detector proposed in this utility model; Figure 4 This is a schematic diagram of the filter structure of the effective gas delivery device for the pump-suction detector proposed in this utility model; In the diagram: 1. Detection component; 101. Detector body; 102. Display terminal; 103. Indicator light; 104. Miniature vacuum suction pump; 2. Connecting mechanism; 201. Connecting pipe; 202. First spring; 203. First ball; 204. Positioning pipe; 205. Knob; 206. Support pipe; 207. Air supply pipe; 208. Snap ring; 209. Connecting pipe; 210. Second spring; 211. Second ball; 3. Filter component; 301. Fixing plate; 302. Filter screen; 4. Air inlet pipe. Detailed Implementation

[0015] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the present invention, and therefore only show the components relevant to the present invention.

[0016] refer to Figure 1-4 Effective gas delivery devices for pump-type detectors include: The detection component 1 includes a detector body 101 and a miniature vacuum suction pump 104 installed inside the detector body 101. A connecting mechanism 2, installed at the input end of the detector body 101 in the detection assembly 1, is used to improve the connection strength. The connecting mechanism 2 includes a connecting pipe 201 threaded to a micro vacuum suction pump 104. A positioning pipe 204 is threaded onto the upper outer end of the connecting pipe 201, rotating inside a knob 205. A support pipe 206 is threaded onto the upper inner end of the knob 205, and a connecting pipe 209 is threaded onto the top of the support pipe 206. A gas leakage prevention sealing assembly is provided between the connecting pipe 201 and the connecting pipe 209. The sealing assembly includes a first spring 202 fixed in the top slot of the connecting pipe 201 and a second spring 210 fixed in the bottom slot of the connecting pipe 209. A first ball 203 is mounted on the top of the first spring 202, and a second ball 210 is fixed on the bottom of the second spring 210. The unit is equipped with a second ball 211. A gas delivery pipe 207 is connected between the positioning tube 204 and the support tube 206 by a retaining ring 208. The connecting pipe is threadedly connected to the micro vacuum suction pump and the positioning tube respectively. The positioning tube is connected to the knob for rotation. Finally, the air inlet pipe is tightly connected to the connecting pipe in the connecting mechanism by a thread. The gas delivery pipe is precisely pressed between the connecting pipe and the connecting pipe by the retaining ring, achieving a firm connection and avoiding loosening caused by frequent insertion and connection. The first spring and the second spring in the sealing assembly push the first ball and the second ball to press tightly against both ends of the gas delivery pipe. When the support tube is not fully connected, the preload of the spring causes the ball to automatically close the pipe opening, achieving dynamic sealing. Conversely, when the support tube and the knob are fully connected, the ball will cause the spring to contract under the compression of the gas delivery pipe, and the gas can be delivered through the air hole opened on the gas delivery pipe. The filter assembly 3 is installed at the slot at the bottom of the connecting pipe 209 in the connecting mechanism 2 to ensure the purity of the gas sample. The filter assembly 3 includes a fixed plate 301 positioned between the connecting pipe 209 and the second spring 210. A filter screen 302 is fixedly installed inside the fixed plate 301. When the gas enters the connecting pipe through the inlet pipe, the filter screen in the fixed plate intercepts the airflow and blocks impurities and dust in the gas, so that the gas is deeply purified before entering the micro vacuum suction pump. The filter screen is installed without gaps through the interference fit between the fixed plate and the slot of the connecting pipe. The second spring supports the filter assembly and offsets the impact vibration of the airflow, ensuring the long-term adhesion between the filter material and the pipe wall.

[0017] Example 1: The detector body 101 is equipped with a display terminal 102 and an indicator light 103 on one side, which can display the test data on the display terminal for easy observation by the operator. The miniature vacuum suction pump 104 is a diaphragm vacuum pump, model HX-07DCB4. This pump has the characteristics of small size, large flow, maintenance-free, low noise and low vibration. It has good airtightness and high stability and is suitable for environments with high compatibility requirements for various media. The knob 205 is rotated and the top thread of the connector 209 is connected to the input end of the detector body 101 to set the air inlet pipe 4.

[0018] Example 2: The first ball 203 and the second ball 211 correspond to the two ends of the gas transmission pipe 207, respectively. The first spring and the second spring push the first ball and the second ball to fit tightly against the two ends of the gas transmission pipe. When the support pipe is not fully connected, the preload of the spring causes the ball to automatically close the pipe opening, achieving dynamic sealing.

[0019] Working Principle: After the effective gas delivery device of the pump-suction detector is activated, the miniature vacuum suction pump 104 starts operating, generating negative pressure to extract gas. The gas first enters the connecting pipe 209 through the inlet pipe 4. At this time, the filter assembly 3 begins to function. The filter screen 302 in the fixed plate 301 intercepts the airflow, effectively removing impurities and dust from the gas to ensure the purity of the gas sample. The filter screen is installed in the connecting pipe slot without gaps through an interference fit. The second spring 210 supports the filter assembly while offsetting the impact vibration of the airflow, maintaining a lasting fit between the filter material and the pipe wall. Subsequently, the purified gas enters the connecting mechanism 2 through the connecting pipe 209. The connecting pipe 201 is threadedly connected to the miniature vacuum suction pump 104. The positioning pipe 204 and the support pipe 206... The connecting pipe 209 and the coupling pipe 205 are securely connected by threads and knobs. The gas supply pipe 207 is precisely pressed between the connecting pipe and the coupling pipe by a retaining ring 208, avoiding loosening caused by frequent insertions and disconnections. The sealing component plays a key role in this process. The first spring 202 and the second spring 210 respectively push the first ball 203 and the second ball 211 to press tightly against both ends of the gas supply pipe. When the support pipe is not fully connected, the preload of the spring causes the ball to automatically close the pipe opening, achieving dynamic sealing. When the support pipe and the knob are fully connected, the ball is squeezed by the gas supply pipe, causing the spring to contract. Gas can be transported through the air holes opened on the gas supply pipe and finally enters the detector body 101 for detection. The detection data is displayed on the display terminal 102 for easy observation by the operator.

[0020] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. An effective gas delivery device for a pump-suction detector, characterized in that, include: The detection component (1) includes the detector body (101) and a miniature vacuum suction pump (104) installed inside the detector body (101). A connecting mechanism (2) is installed at the input end of the detector body (101) in the detection assembly (1) to improve the connection strength. The connecting mechanism (2) includes a connecting pipe (201) threaded with a micro vacuum suction pump (104). A positioning pipe (204) is threaded on the upper end of the outer side of the connecting pipe (201). The positioning pipe (204) is rotatably located inside the knob (205). A support pipe (206) is threaded on the upper end inside the knob (205). A connecting pipe (209) is threaded on the top of the support pipe (206). A gas leakage prevention sealing assembly is provided between the connecting pipe (201) and the connecting pipe (209). The filter assembly (3) is installed at the slot at the bottom of the connecting pipe (209) in the connecting mechanism (2) to ensure the purity of the gas sample.

2. The effective gas delivery device for a pump-suction detector according to claim 1, characterized in that, The detector body (101) is provided with a display terminal (102) and an indicator light (103) on one side.

3. The effective gas delivery device for a pump-suction detector according to claim 1, characterized in that, The miniature vacuum pump (104) is a diaphragm vacuum pump, model HX-07DCB4.

4. The effective gas delivery device for a pump-suction detector according to claim 1, characterized in that, The knob (205) is rotated at the input end of the detector body (101).

5. The effective gas delivery device for a pump-suction detector according to claim 1, characterized in that, The top thread of the connecting pipe (209) is provided with an air inlet pipe (4).

6. The effective gas delivery device for a pump-suction detector according to claim 1, characterized in that, The sealing assembly includes a first spring (202) fixed in the top slot of the connecting pipe (201) and a second spring (210) fixed in the bottom slot of the connecting pipe (209). A first ball (203) is installed on the top of the first spring (202) and a second ball (211) is installed on the bottom of the second spring (210). An air supply pipe (207) is engaged between the positioning pipe (204) and the support pipe (206) by a retaining ring (208).

7. The effective gas delivery device for a pump-suction detector according to claim 6, characterized in that, The first sphere (203) and the second sphere (211) correspond to the two ends of the gas transmission pipe (207), respectively.

8. The effective gas delivery device for a pump-suction detector according to claim 1 or 6, characterized in that, The filter assembly (3) includes a fixed plate (301) positioned between the connecting pipe (209) and the second spring (210), and a filter screen (302) is fixedly disposed inside the fixed plate (301).

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