Anti-blocking head of soil gas collecting twist drill

Abstract

The utility model relates to the technical field of soil gas collection, and discloses an in-soil gas collection twist drill anti-blocking head, which comprises an anti-blocking head, the anti-blocking head comprises a connector, a collection pipe and a conical drill bit, the connector, the collection pipe and the conical drill bit are sequentially arranged from top to bottom, the connector is movably sleeved with the collection pipe, and the collection pipe is sleeved with the conical drill bit. The bottom of the collecting pipe is fixedly connected with the top of the conical drill bit, a step is arranged at the connecting position of the collecting pipe and the conical drill bit, a cavity is formed in the collecting pipe, and a plurality of sets of air inlet holes communicated with the cavity are evenly formed in the side wall of the collecting pipe. According to the gas collecting device, the gas collecting efficiency and accuracy are improved, the cavity is formed in the collecting pipe, it can be guaranteed that soil entering the gas inlet hole falls into the lower space of the cavity, the gas inlet hole is located in the upper middle portion of drilling, and the gas inlet hole is prevented from being blocked due to the fact that an anti-blocking head is not perpendicular in the manual screwing-in process.

Description

Technical Field

[0001] This utility model relates to the field of soil gas collection technology, specifically to an anti-clogging head for a soil gas collection auger. Background Technology

[0002] Soil gas geochemical surveying is a gas geochemical measurement method that uses gas collectors to collect gases from soil pores and analyzes the components of these gases, such as hydrocarbons, methane, carbon dioxide, mercury, sulfur-containing gases, and radon, for oil and gas and solid mineral exploration. Gas geochemical surveying is a promising method for the geochemical exploration of concealed minerals. However, due to the high mobility and reactivity of gases, their low concentration in surface media, poor reproducibility of analytical tests, and the lack of efficient and accurate analytical testing methods, sulfur-containing gases are difficult to widely apply in concealed mineral exploration.

[0003] In recent years, with the significant improvement in the accuracy of gas analysis and testing and the successful development of on-site real-time measurement equipment, the application of gas geochemical measurement in concealed mineral deposits has once again come into the view of exploration scientists.

[0004] Currently, there are integrated auger drill bits for soil gas sampling. The drill bit is a solid drill bit with three horizontal vents and one vertical vent inside, the upper part of which connects to a hose. In actual gas geochemical measurements, especially in arid and humid regions, severe vent blockage occurs; and because the drill bit is directly connected to the hose, cleaning is difficult and reduces the hose's sealing performance and service life. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides an anti-clogging head for soil gas collection augers, thereby solving the problems mentioned in the background technology.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a soil gas collection spiral drill anti-clogging head, comprising an anti-clogging head, the anti-clogging head including a connector, a collection tube, and a conical drill bit, arranged sequentially from top to bottom, the connector being movably sleeved with the collection tube, the top of the connector having a connection port, a flexible tube sleeved on the connection port, the bottom of the collection tube being fixedly connected to the top of the conical drill bit, and the connection between the collection tube and the conical drill bit having a step, the collection tube having a cavity inside, and multiple sets of air inlets communicating with the cavity being evenly arranged on the side wall of the collection tube, the bottom of the connector being rotatably connected to a sealing cap for sealing multiple air inlets, the sealing cap being threadedly connected to the collection tube, and a cleaning component for cleaning multiple sets of air inlets being provided inside the collection tube.

[0007] Furthermore, the cleaning assembly includes a collection base, multiple fixing tubes, and a top seat. The collection base is slidably disposed inside the cavity. The multiple fixing tubes are evenly fixed on the top of the collection base. The top seat is disposed on the top of the connector. The multiple fixing tubes pass through the connector and are fixedly connected to the bottom of the top seat. An air storage chamber is provided inside the top seat. An air inlet pipe communicating with the air storage chamber is provided on the top of the top seat. A soil collection groove is provided in the middle of the collection base. A slot is provided on the outer wall of the collection base. Both ends of all the fixing tubes are respectively connected to the air storage chamber and the slot.

[0008] Furthermore, the diameter of the collection tube is smaller than the top diameter of the conical drill bit, and the step length between the collection tube and the conical drill bit is greater than 1 cm.

[0009] Furthermore, the inner walls of the multiple sets of air inlets are symmetrically arranged in pairs on the collection tubes, and the wall thickness of all the air inlets is 1mm.

[0010] Furthermore, the inner wall of the sealing cover is provided with an internal thread, and the outer wall of the top of the collection tube is provided with an external thread, and the external thread is threadedly connected to the internal thread.

[0011] Furthermore, an abutment ring is fixedly connected to the bottom end of the outer wall of the sealing cover, and the length of the abutment ring is equal to that of the step.

[0012] Furthermore, the connection port extends through the top seat and is slidably connected to the top seat.

[0013] Furthermore, the outer wall of the collection base is provided with multiple sliding grooves located below the slot opening. All the sliding grooves are evenly arranged along the circumference and face multiple sets of air inlets. A cleaning brush is slidably connected in each of the sliding grooves, and multiple elastic elements that are fixedly connected to the sliding grooves are fixedly connected to the back of each cleaning brush.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. In this utility model, the large outer diameter of the top of the conical drill bit ensures the durability of the drill bit and also expands the space locally, preventing soil from clogging the pores. The collection tube has a cavity inside, which ensures that the soil entering the air inlet falls into the lower space of the cavity. Moreover, the air inlet is located in the upper part of the drilling, avoiding clogging of the air inlet due to reasons such as the anti-clogging head not being perpendicular during manual screwing. In addition, there is a step between the conical drill bit and the collection tube. The length of the step is the gap between the outer wall of the collection tube and the hole. During the process of the conical drill bit breaking the soil and driving the collection tube to insert into the soil, it can prevent soil from falling directly into the air inlet after falling off, which enhances the anti-clogging effect and improves the efficiency and accuracy of gas collection.

[0016] 2. This utility model, through the design of the cleaning component, utilizes the impact of gas to blow away soil particles adhering to the area around the air inlet. Simultaneously, the soil collection trough design further collects fallen soil. After the collection work is completed, the connector and collection tube can be disassembled, and the soil in the collection trough can be emptied, thus maintaining the cleanliness and unobstructed flow of the air inlet. This significantly improves the efficiency and accuracy of soil gas collection, avoiding collection failures or data errors caused by air inlet blockage.

[0017] 3. In this utility model, when the collection base moves up and down, the front end of its external cleaning brush can extend into the air inlet. Through the elastic force of the elastic element, the cleaning brush is always in contact with the edge of the air inlet. During the up and down movement of the collection base, the cleaning brush can scrape off the soil attached to the edge of the air inlet, thereby cleaning the air inlet, ensuring the unobstructed flow of the air inlet, and preventing soil from clogging the air inlet. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of an anti-clogging head for a soil gas collection auger according to the present invention;

[0019] Figure 2 This is a schematic cross-sectional view of the anti-clogging head of a soil gas harvesting auger according to the present invention. Figure 1 ;

[0020] Figure 3 This is a schematic cross-sectional view of the anti-clogging head of a soil gas harvesting auger according to the present invention. Figure 2 ;

[0021] Figure 4 This utility model Figure 3 Enlarged view of the structure at point A;

[0022] Figure 5 This is a schematic diagram of the structure of the data acquisition tube of this utility model;

[0023] Figure 6 This is a partial structural diagram of the cleaning component of this utility model.

[0024] In the diagram: 1. Flexible hose; 2. Connector; 3. Collection tube; 4. Conical drill bit; 5. Step; 6. Air inlet; 7. Sealing cap; 8. Cleaning assembly; 9. Connection port;

[0025] 71. Contact ring; 72. Internal thread; 81. Collection base; 82. Fixing pipe; 83. Top seat; 84. Air storage chamber; 85. Air inlet pipe; 86. Soil collection trough; 87. Groove opening; 88. External thread; 89. Slide groove; 90. Cleaning brush. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0027] Please see Figures 1 to 4 This utility model provides an anti-clogging head for a soil gas collection auger, including an anti-clogging head comprising a connector 2, a collection tube 3, and a conical drill bit 4, arranged sequentially from top to bottom. The connector 2 is movably sleeved with the collection tube 3. A connection port 9 is provided at the top of the connector 2, and a flexible hose 1 is sleeved on the connection port 9. The bottom of the collection tube 3 is fixedly connected to the top of the conical drill bit 4, and the connection between the collection tube 3 and the conical drill bit 4 has a step 5. A cavity is provided inside the collection tube 3, and multiple sets of air inlets 6 communicating with the cavity are evenly arranged on the side wall of the collection tube 3. A sealing cap 7 for sealing the multiple air inlets 6 is rotatably connected to the bottom of the connector 2. The sealing cap 7 is threadedly connected to the collection tube 3. A cleaning component 8 for cleaning the multiple sets of air inlets 6 is provided inside the collection tube 3.

[0028] The inner wall of the sealing cap 7 has an internal thread 72, and the outer wall of the top of the collection tube 3 has an external thread 88, which is threadedly connected to the internal thread 72.

[0029] Before collecting gas from soil pores, this invention connects the connector 2 to the collection tube 3, and then connects and fixes the internal thread 72 of the sealing cap 7 to the external thread 88 of the collection tube 3, and seals multiple sets of air inlets 6 to prevent soil from falling into the air inlets 6 and causing blockage during the drilling process of the conical drill bit 4. Then, an anti-blocking auger is inserted into the soil. During the manual insertion of the anti-blocking auger into the ground, the conical drill bit 4 first breaks through the soil and then rotates and inserts into it. When the collection tube 3 is stably inserted into the soil... Then, rotate the sealing cover 7 in the opposite direction to expose the covered air inlet 6. When the sealing cover 7 rotates in the opposite direction, it will drive the connector 2 to move upward. At this time, the air inlet 6 is located in the middle of the sealing head, which avoids the air inlet 6 being blocked due to reasons such as the anti-blocking head not being vertical during manual screwing. The gas in the soil will enter the cavity inside the collection tube 3 through the air inlet 6, and then be transported to the hose 1 from the connector 9 to complete the collection of soil gas. The whole process is simple to operate, effectively prevents the air inlet 6 from being blocked, and improves the efficiency and accuracy of gas collection.

[0030] The diameter of the collection tube 3 is smaller than the diameter of the bottom and top surfaces of the conical drill bit 4, and the length of the step 5 between the collection tube 3 and the conical drill bit 4 is greater than 1 cm.

[0031] In this invention, a step 5 is provided between the conical drill bit and the collection tube 3. The length of the step 5 is the gap between the outer wall of the collection tube 3 and the opening. During the process of the conical drill bit 4 breaking through the soil and driving the collection tube 3 into the soil, this prevents soil from falling directly into the air inlet 6 after it detaches. Simultaneously, the length of the step 5 is designed to be greater than 1 cm, ensuring sufficient space to block the soil and enhancing the anti-clogging effect. When manually pumping air or starting the air pump, soil easily detaches. If a small amount of soil falls into the air inlet 6, it can enter the cavity through the air inlet 6 for unified collection. After the gas measurement at each measuring point is completed, the connection head 2 can be disassembled for soil cleaning based on the amount of soil that has fallen into the cavity. This invention has a simple structure, is easy to operate, and effectively prevents soil from clogging the air inlet 6, improving gas collection efficiency and accuracy.

[0032] The larger outer diameter of the cone top of the conical drill bit 4 ensures the durability of the drill bit and expands the space locally, preventing soil from clogging the air inlet 6. The collection tube 3 has a cavity inside, which ensures that the soil entering the air inlet 6 falls into the lower space of the cavity instead of clogging the air inlet 6.

[0033] Furthermore, the cleaning component 8 can clean the air inlet 6 inside the collection tube 3 to prevent soil particles from clogging the air inlet 6 and ensure smooth gas collection.

[0034] Specifically, the cleaning component 8 includes a collection base 81, multiple fixing pipes 82, and a top seat 83. The collection base 81 is slidably disposed inside the cavity. The multiple fixing pipes 82 are evenly fixed on the top of the collection base 81. The top seat 83 is disposed on the top of the connector 2. The multiple fixing pipes 82 pass through the connector 2 and are fixedly connected to the bottom of the top seat 83. An air storage chamber 84 is opened inside the top seat 83. An air inlet pipe 85 communicating with the air storage chamber 84 is provided on the top of the top seat 83. A soil collection trough 86 is opened in the middle of the collection base 81. A slot 87 is opened on the outer wall of the collection base 81. The two ends of all fixing pipes 82 are respectively connected to the air storage chamber 84 and the slot 87.

[0035] By pulling the top seat 83, multiple fixed tubes 82 and their bottom collection base 81 slide within the cavity, allowing the groove 87 on the outer wall of the collection base 81 to move to the air inlet 6, connecting the groove 87 with all the air inlets 6. Then, the air inlet pipe 85 is connected to an external air pump, and gas enters the air storage chamber 84 through the air inlet pipe 85, then through the fixed tubes 82 to the groove 87. The impact of the gas blows away soil particles adhering to the air inlets 6. Simultaneously, the soil collection trough 86 is designed to further collect fallen soil. After the collection work is completed, the connector 2 can be disassembled from the collection pipe 3, and the soil in the soil collection trough 86 can be emptied, thus keeping the air inlets 6 clean and unobstructed. This greatly improves the efficiency and accuracy of soil gas collection, avoiding collection failures or data errors caused by blockage of the air inlets 6.

[0036] Multiple sets of air inlets 6 are symmetrically arranged on the inner walls of the collection tubes 3, and the wall thickness of all air inlets 6 is 1mm. The thinner inner wall of the air inlets 6 reduces the contact area between the soil and the inner wall of the collection tubes 3, which is conducive to soil falling off rather than blocking the air inlets 6; at the same time, it is also conducive to soil falling into the cavity under negative pressure when manually pumped or operated by an air pump, thus ensuring that the air inlets 6 are unobstructed.

[0037] A contact ring 71 is fixedly connected to the bottom of the outer wall of the sealing cover 7. The length of the contact ring 71 is equal to that of the step 5. The contact ring 71 is designed so that when the sealing cover 7 is rotated to contact the air inlet 6, the contact ring 71 can move upward along the inner wall of the opening. This allows the contact ring 71 to evenly compact the soil during the movement, reducing the probability of soil loosening and falling. It also ensures the airtightness between the air inlet 6 and the opening, preventing external air from entering the opening and affecting the soil gas collection effect.

[0038] The connection port 9 passes through the top seat 83 and is slidably connected to the top seat 83. The design of the connection port 9 not only ensures the smoothness of the soil gas collection process, but also avoids interference between the connection port 9 and the top seat 83, which would affect the operation of the cleaning component 8.

[0039] The outer wall of the collection base 81 has multiple sliding grooves 89 located below the slot 87. All sliding grooves 89 are evenly arranged along the circumference and face multiple sets of air inlets 6. Cleaning brushes 90 are slidably connected in all sliding grooves 89, and multiple elastic elements 91 that are fixedly connected to the sliding grooves 89 are fixedly connected to the back of all cleaning brushes 90.

[0040] As the collecting base 81 moves up and down, the front end of its external cleaning brush 90 can extend into the air inlet 6. Through the elastic force of the elastic element 91 (the elastic element 91 in this utility model can be a spring or any structure or device that can elastically compress the cleaning brush 90, which is the prior art), the cleaning brush 90 is always in contact with the edge of the air inlet 6. As the collecting base 81 moves up and down, the cleaning brush 90 can scrape off the soil attached to the edge of the air inlet 6, thereby cleaning the air inlet 6, ensuring the unobstructed flow of the air inlet 6, and preventing soil from clogging the air inlet 6.

[0041] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A soil gas harvesting auger anti-clogging head, comprising an anti-clogging head, characterized in that: The anti-clogging head includes a connector (2), a collection tube (3), and a conical drill bit (4). The connector (2), collection tube (3), and conical drill bit (4) are arranged sequentially from top to bottom. The connector (2) is movably sleeved with the collection tube (3). The top of the connector (2) is provided with a connection port (9). A flexible tube (1) is sleeved on the connection port (9). The bottom of the collection tube (3) is fixedly connected to the top of the conical drill bit (4). The connection between the collection tube (3) and the conical drill bit (4) has a step (5). The collection tube (3) has a cavity inside. Multiple sets of air inlets (6) communicating with the cavity are evenly arranged on the side wall of the collection tube (3). The bottom of the connector (2) is rotatably connected with a sealing cap (7) for sealing multiple air inlets (6). The sealing cap (7) is threadedly connected to the collection tube (3). The collection tube (3) has a cleaning component (8) for cleaning multiple sets of air inlets (6) inside.

2. The anti-clogging head for a soil gas harvesting auger according to claim 1, characterized in that, The cleaning component (8) includes a collection base (81), multiple fixed tubes (82) and a top seat (83). The collection base (81) is slidably disposed inside the cavity. The multiple fixed tubes (82) are evenly fixed on the top of the collection base (81). The top seat (83) is disposed on the top of the connector (2). The multiple fixed tubes (82) pass through the connector (2) and are fixedly connected to the bottom of the top seat (83). An air storage chamber (84) is provided inside the top seat (83). An air inlet pipe (85) communicating with the air storage chamber (84) is provided on the top of the top seat (83). A soil collection trough (86) is provided in the middle of the collection base (81). A slot (87) is provided on the outer wall of the collection base (81). The two ends of all the fixed tubes (82) are respectively connected to the air storage chamber (84) and the slot (87).

3. The anti-clogging head for a soil gas harvesting auger according to claim 1, characterized in that, The diameter of the collection tube (3) is smaller than the top diameter of the conical drill bit (4), and the length of the step (5) between the collection tube (3) and the conical drill bit (4) is greater than 1 cm.

4. The anti-clogging head for a soil gas harvesting auger according to claim 1, characterized in that, The air inlets (6) are symmetrically arranged on the inner walls of the collection tubes (3) in pairs, and the wall thickness of all the air inlets (6) is 1 mm.

5. The anti-clogging head for a soil gas collection auger according to claim 1, characterized in that, The inner wall of the closed cover (7) is provided with an internal thread (72), and the outer wall of the top of the collection tube (3) is provided with an external thread (88). The external thread (88) is threadedly connected to the internal thread (72).

6. The anti-clogging head for a soil gas harvesting auger according to claim 1, characterized in that, An abutment ring (71) is fixedly connected to the bottom of the outer wall of the closed cover (7), and the length of the abutment ring (71) is equal to that of the step (5).

7. The anti-clogging head for a soil gas collection auger according to claim 2, characterized in that, The connection port (9) passes through the top seat (83) and is slidably connected to the top seat (83).

8. The anti-clogging head for a soil gas collection auger according to claim 2, characterized in that, The outer wall of the collection base (81) is provided with multiple sliding grooves (89) located below the slot (87). All the sliding grooves (89) are evenly arranged along the circumferential direction and face multiple sets of air inlets (6). A cleaning brush (90) is slidably connected in each of the sliding grooves (89), and multiple elastic elements (91) that are fixedly connected to the back of each cleaning brush (90) are fixedly connected to the sliding groove (89).

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