Sludge sampling device

Abstract

The invention discloses a sludge sampling device which comprises an inserting column, a feeding groove is formed in the inserting column, a conical head is mounted on the lower surface of the inserting column in a communicating manner, a plurality of groups of spacing grooves are formed in the middle section of the inserting column, a guide groove is formed in each group of spacing grooves in a communicating manner, and a sampling mechanism is mounted in the spacing grooves and the guide grooves in a sliding and inserting manner; depth measurement mechanisms are slidably mounted on the outer surfaces of the insertion columns and the insertion blocks in a damping manner, so that the depth measurement mechanisms abut against the surface of the sludge and slide on the outer surfaces of the insertion columns and the insertion blocks in the process that the insertion columns are inserted into the sludge, and the depth measurement mechanisms can directly sense the position of the surface of the sludge. Through the design of the depth measuring mechanism and the sampling mechanism, sludge at different depth positions can be independently cut out from the feeding groove, so that a sample with the required depth can be accurately obtained from a complex sludge layer, and the requirements of different research or detection purposes on the sludge sample with the specific depth are met.

Description

Technical Field

[0001] The invention relates to the technical field of environmental monitoring equipment, in particular to a sludge sampling device. Background Art

[0002] Water environment refers to the natural factors and social factors that affect the normal function of water bodies that surround human space and can directly or indirectly affect human life and development. With the continuous progress of society, more and more garbage is generated by social production. Therefore, the protection and management of water environment is very important. At present, in the process of water environment management, silt sampling devices are needed to sample the silt at the bottom of the lake for the next step of detection and analysis.

[0003] For example, a patent with national authorized patent announcement number CN221100154U discloses a sludge sampling device, including a sampling cone, a sampling tube, a sealing box, a rotating shaft, a motor, a spiral blade, a connecting column, a handle, four long rods, four shovel buckets and a discharge assembly. The discharge assembly is connected to the sampling tube. Hold the handle, aim the sampling cone at the sludge pile and quickly remove it downward. Due to gravity, the sampling cone enters the interior of the sludge pile. Start the motor to make the rotating shaft drive the spiral blade and the sampling cone to rotate, thereby driving the long rod and the shovel bucket to rotate. The shovel bucket collects the surrounding sludge and transports it to the inside, while the spiral blade slowly transfers the sludge to the top of the sampling tube and then discharges it from the discharge assembly. In this way, the sludge in the water is quickly sampled, which reduces the workload of the staff and improves the authenticity of the sample and the rigor of the sampling.

[0004] However, the above-mentioned sludge sampling device cannot extract sludge of a specific depth as required after sampling the sludge, which will cause the collected samples to be unable to accurately represent the sludge characteristics of the target depth, resulting in inaccurate results in subsequent analysis and research, such as soil fertility analysis and water pollution tracing. Summary of the invention

[0005] The object of the present invention is to provide a sludge sampling device to solve the problem in the above-mentioned background technology that after sludge sampling, sludge of a specific depth cannot be taken out as required.

[0006] To achieve the above object, the present invention provides the following technical solutions: A sludge sampling device, comprising: a plug post, a feed slot is provided in the plug post, a cone head is connected and installed on the lower surface of the plug post, a plurality of groups of spacing slots are provided in the middle section of the plug post, a guide slot is connected and opened in each group of the spacing slots, and a sampling mechanism is slidably installed in the spacing slots and the guide slots; Wherein, an insert block is fixedly installed on one end of the outer surface of the insert column, and an inner embedding groove is opened at one end of the insert block, and the inner embedding groove is connected with the guide groove, so that the pushing end of the sampling mechanism extends into the inner embedding groove, and a sealing plate is slidably installed in the inner embedding groove, so that the sealing plate can seal the sampling mechanism in the inner embedding groove; Among them, the outer surfaces of the plug column and the plug block are equipped with a depth measuring mechanism in a damped sliding manner, so that when the plug column is inserted into the mud, the depth measuring mechanism will touch the surface of the mud and slide on the outer surfaces of the plug column and the plug block, so that the depth measuring mechanism can directly sense the position of the mud surface, providing a starting reference point for accurately measuring the depth of the plug column inserted into the mud.

[0007] Preferably, a lifting handle is fixedly mounted on the upper surfaces of the plug post and the plug block.

[0008] Preferably, the outer surface of the plug column is provided with air holes, and the air holes are connected to the feed trough, so that when the sludge enters the feed trough, the gas in the feed trough can be discharged to the outside through the air holes.

[0009] Preferably, both sides of the lower half of the feed trough are provided with turning grooves, and closing covers are rotatably installed in the two groups of turning grooves, so that the sludge will push the two groups of closing covers to cover the lower half of the feed trough tightly during the process of sliding down in the feed trough.

[0010] Preferably, the depth measuring mechanism includes two groups of damping rods, which are fixedly mounted on both ends of the outer surface of the column, and the outer surfaces of the two groups of damping rods are damped and slidably mounted with floating plates, and the floating plates that slide damped on the outer surfaces of the damping rods are simultaneously slidably mounted on the outer surfaces of the column and the block.

[0011] Preferably, scales are provided at both ends of the plug block, and the scales are for the floating plate to slide inside, so that the insertion depth can be read through the scales during the process of the floating plate contacting the surface of the mud and sliding on the outer surfaces of the plug column and the plug block.

[0012] Preferably, the sampling mechanism includes a push ring, a guide column is fixedly installed on the outer surface of the push ring, the push ring is slid into the guide groove through the guide column, and the push ring can fit into the spacing groove at the same time, so that the inner ring diameter of the push ring is connected to the feed groove.

[0013] Preferably, an insertion slot is provided in the guide column, a U-shaped spring rack is slidably installed in the insertion slot, and the U-shaped spring rack extends from the guide slot to the embedded slot.

[0014] Preferably, triangular blocks are fixedly mounted on both ends of the U-shaped bomb rack, and the triangular blocks can be inserted into triangular grooves, and the triangular grooves are arranged on both sides of the insertion grooves.

[0015] Preferably, the C-shaped spring rack can be extended and pulled out from the embedded groove, so that the C-shaped spring rack can drive the triangular blocks on both sides to be pulled and inserted into the triangular grooves in the insertion grooves, and then the push ring can be driven to slide out of the spacing groove by pushing the extended C-shaped spring rack, so that the push ring can bring the sludge in the inner ring diameter out of the feed groove.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. Through the design of the plug block, cone head, feed trough, closing cover, spacing groove, guide groove, depth measuring mechanism and sampling mechanism, when sampling sludge, the plug column can be inserted into the sludge through the cone head by holding the outer surface of the lifting handle, so that the sludge can enter the feed trough of the plug column to push the closing cover open. At the same time, it will also drive the depth measuring mechanism installed with damping sliding on the outer surface to touch the surface of the sludge and slide on the outer surfaces of the plug column and the plug block, so that the depth measuring mechanism can directly sense the position of the sludge surface, and provide a starting reference point for accurately measuring the depth of the plug column inserted into the sludge. As the insertion depth increases, the sludge can pass through the feed trough to enter the multiple sampling mechanisms. Then, the staff can pull the lifting handle to pull the plug column out of the sludge, and the sludge in the feed trough will push the closing cover to block the feed trough through the downward force, and the depth measuring mechanism will remain on the outer surface of the pulled out plug column, so that the staff can stay on the depth measuring mechanism. The depth of the plug in the sludge can be confirmed by the position of the plug. After the insertion depth is confirmed, the depth measuring mechanism can be pushed back to its original position. During the downward sliding process of the outer surfaces of the plug and the plug, the depth measuring mechanism will scrape off the sludge adhered to the outer surfaces of the plug and the plug. Then the staff can pull the sealing plate upward from the embedded groove to expose the pushing end of the sampling mechanism. Then the staff can push the sampling mechanism at a specific depth position out of the spacing groove between the plugs as needed, so that the sampling mechanism can separately intercept the sludge at this depth position from the feed trough. This makes the sampling highly targeted and can meet the needs of separate analysis of sludge at different depths. For example, when studying the changes in the composition of the sludge in the vertical direction, sludge samples at different depths can be accurately obtained to provide accurate data for the research. In this way, when performing chemical analysis, microbial detection and other operations on the sludge samples, it can be ensured that each sample accurately represents the sludge characteristics at its depth.

[0017] 2. Through the design of the damping rod, the floating plate and the scale, the process of inserting the column into the sludge will drive the top of the floating plate to touch the surface of the sludge and slide on the outer surfaces of the column, the plug block and the damping rod. This action can mark the position of the sludge surface when the column begins to be inserted into the sludge, and provides a reliable starting reference point for accurately measuring the depth of the column inserted into the sludge. After the sampling is completed and the column is pulled out of the sludge, the floating plate will stay in the current position due to the damping force, so that the staff can read the depth of insertion into the sludge through the scale according to the position where the floating plate stays. After confirming the insertion depth, the floating plate can be pushed down back to its original position. When the floating plate slides downward on the outer surfaces of the column, the plug block and the damping rod, the sludge adhered to the outer surfaces of the column and the plug block will be scraped off, which helps to reduce the residual sludge on the surface of the equipment and make the equipment in a better initial state when it is used next time.

[0018] 3. Through the design of the push ring, guide column, C-shaped spring rack, insertion groove, triangular groove and triangular block, after the sampling is completed, the staff can pull the sealing plate upward from the embedded groove to expose the C-shaped spring rack, and then the staff can pull the C-shaped spring rack out of the embedded groove as needed, so that the C-shaped spring rack can drive the triangular blocks on both sides to be pulled and inserted into the triangular groove in the insertion groove, and then the push ring can be driven to slide out of the spacing groove by pushing the extended C-shaped spring rack, so that the push ring can bring the sludge in the inner ring caliber out of the feed groove, and then The push ring can be used to separately intercept the silt at this depth from the feed trough, which makes it possible to accurately obtain samples of the required depth in a complex silt layer, meeting the needs of different research or detection purposes for silt samples of a specific depth. The staff can then pinch the two sides of the U-shaped bullet rack to take out the triangular block from the triangular groove, and then insert the U-shaped bullet rack into the insertion groove. The push ring can then be pressed to slide into the guide groove through the guide columns at both ends, and at the same time, the push ring can fit into the spacing groove, so that the inner ring diameter of the push ring is connected to the feed trough for next use. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the sludge sampling device of the present invention; Figure 2 It is a structural schematic diagram of the depth measurement mechanism of the present invention; Figure 3 It is a structural schematic diagram of the sealing plate and the embedded groove of the present invention; Figure 4 It is a schematic diagram of the structure of the feed trough and the air hole of the present invention; Figure 5 It is a schematic diagram of the structure of the spacing groove and the guide groove of the present invention; Figure 6 It is a structural schematic diagram of the sampling mechanism of the present invention; Figure 7It is a structural schematic diagram of the U-shaped bomb rack of the present invention.

[0020] In the figure: 1. plug block; 101. lifting handle; 102. air hole; 103. cone head; 104. sealing plate; 105. embedded groove; 106. feeding groove; 107. closing cover; 108. spacing groove; 109. guide groove; 110. flip groove; 2. depth measuring mechanism; 201. damping rod; 202. floating plate; 203. scale; 3. sampling mechanism; 301. push ring; 302. guide column; 303. U-shaped spring rack; 304. insertion groove; 305. triangular groove; 306. triangular block; 4. plug column. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] like Figure 1-Figure 2 As shown, this embodiment provides a sludge sampling device, including: a plug column 4, a feed groove 106 is provided in the plug column 4, a cone head 103 is connected and installed on the lower surface of the plug column 4, a plurality of groups of spacing grooves 108 are provided in the middle section of the plug column 4, a guide groove 109 is connected and provided in each group of spacing grooves 108, and a sampling mechanism 3 is slidably installed in the spacing grooves 108 and the guide grooves 109; Among them, an insert block 1 is fixedly installed on one end of the outer surface of the insert column 4, and an inner groove 105 is opened at one end of the insert block 1. The inner groove 105 is connected with the guide groove 109, so that the pushing end of the sampling mechanism 3 extends into the inner groove 105, and a sealing plate 104 is slidably installed in the inner groove 105, so that the sealing plate 104 can seal the sampling mechanism 3 in the inner groove 105; Among them, the outer surfaces of the plug post 4 and the plug block 1 are equipped with a depth measuring mechanism 2 in a damped sliding manner, so that when the plug post 4 is inserted into the silt, the depth measuring mechanism 2 will touch the surface of the silt and slide on the outer surfaces of the plug post 4 and the plug block 1, so that the depth measuring mechanism 2 can directly sense the position of the silt surface, providing a starting reference point for accurately measuring the depth of the plug post 4 inserted into the silt.

[0023] A lifting handle 101 is fixedly mounted on the upper surfaces of the plug post 4 and the plug block 1 .

[0024] Among them, the outer surface of the plug column 4 is provided with an air hole 102, and the air hole 102 is connected with the feed trough 106, so that when the sludge enters the feed trough 106, the gas in the feed trough 106 will be discharged to the outside through the air hole 102.

[0025] Among them, both sides of the lower half of the feed trough 106 are provided with turning grooves 110, and closing covers 107 are rotatably installed in the two sets of turning grooves 110, so that the sludge will push the two sets of closing covers 107 to cover the lower half of the feed trough 106 tightly during the process of sliding down in the feed trough 106.

[0026] Through the design of the plug block 1, the cone head 103, the feed groove 106, the closing cover 107, the spacing groove 108, the guide groove 109, the depth measuring mechanism 2 and the sampling mechanism 3, when sampling the sludge, the outer surface of the lifting handle 101 can be held to insert the plug column 4 into the sludge through the cone head 103, so that the sludge can enter the feed groove 106 of the plug column 4 to push the closing cover 107 open, and at the same time, the depth measuring mechanism 2 with damping sliding installation on the outer surface will be driven to touch the surface of the sludge on the outer surface of the plug column 4 and the plug block 1. The sliding of the plug-in column 4 allows the depth measuring mechanism 2 to directly sense the position of the sludge surface, providing a starting reference point for accurately measuring the depth of the plug-in column 4 inserted into the sludge. As the insertion depth increases, the sludge can pass through the feed trough 106 to enter the multiple sampling mechanisms 3. Then, the staff can pull the lifting handle 101 to pull the plug-in column 4 out of the sludge, and the sludge in the feed trough 106 will push the closing cover 107 to block the feed trough 106 through the downward force, and the outer surface of the pulled-out plug-in column 4 will remain with the depth measuring mechanism 2, so that the staff can pull the plug-in column 4 out of the sludge. The staff can confirm the depth of the plug 4 inserted into the sludge by the position where the depth measuring mechanism 2 stops. After confirming the insertion depth, the depth measuring mechanism 2 can be pushed back to its original position. During the process of the outer surfaces of the plug 4 and the plug block 1 sliding downward, the depth measuring mechanism 2 will scrape off the sludge adhered to the outer surfaces of the plug 4 and the plug block 1. Then the staff can pull the sealing plate 104 upward from the embedded groove 105 to expose the pushing end of the sampling mechanism 3. Then the staff can push the sampling mechanism 3 at a specific depth position out of the spacing groove 108 between the plugs 4 as needed, so that the sampling mechanism 3 can separately intercept the sludge at this depth position from the feed groove 106. This makes the sampling highly targeted and can meet the needs of separate analysis of sludge at different depths. For example, when studying the changes in the composition of the sludge in the vertical direction, sludge samples at different depths can be accurately obtained to provide accurate data for the research. In this way, when performing chemical analysis, microbial detection and other operations on the sludge samples, it can be ensured that each sample accurately represents the sludge characteristics at its depth.

[0027] like Figure 3 As shown, the depth measuring mechanism 2 includes two groups of damping rods 201, which are fixedly mounted on both ends of the outer surface of the column 4. The outer surfaces of the two groups of damping rods 201 are damped and slidably mounted with floating plates 202. The floating plates 202 that slide damped on the outer surfaces of the damping rods 201 are simultaneously slidably mounted on the outer surfaces of the column 4 and the plug block 1.

[0028] Among them, scales 203 are provided at both ends of the plug block 1, and the scale 203 is for the floating plate 202 to slide inside, so that the floating plate 202 touches the surface of the silt and slides on the outer surface of the plug column 4 and the plug block 1. The insertion depth can be read through the scale 203.

[0029] Through the design of the damping rod 201, the floating plate 202 and the scale 203, the process of inserting the column 4 into the sludge will drive the floating plate 202 to touch the surface of the sludge and slide on the outer surfaces of the column 4, the plug block 1 and the damping rod 201. This action can mark the position of the sludge surface when the column 4 starts to be inserted into the sludge, and provides a reliable starting reference point for accurately measuring the depth of the column 4 inserted into the sludge. After the sampling is completed and the column 4 is pulled out of the sludge, the floating plate 202 will stay in the current position due to the damping force, so that the staff can read the depth of insertion into the sludge through the scale 203 according to the position where the floating plate 202 stays. After confirming the insertion depth, the floating plate 202 can be pushed down back to its original position. When the outer surfaces of the column 4, the plug block 1 and the damping rod 201 slide downward, the floating plate 202 will scrape off the sludge adhered to the outer surfaces of the column 4 and the plug block 1, which helps to reduce the residue of sludge on the surface of the equipment and put the equipment in a better initial state when it is used next time.

[0030] like Figure 4-Figure 7 As shown, the sampling mechanism 3 includes a push ring 301, and a guide column 302 is fixedly installed on the outer surface of the push ring 301. The push ring 301 is slidably inserted into the guide groove 109 through the guide column 302, and at the same time, the push ring 301 can fit into the spacing groove 108, so that the inner ring diameter of the push ring 301 is connected to the feed groove 106.

[0031] The guide column 302 is provided with an inserting slot 304 , in which a U-shaped spring holder 303 is slidably installed. The U-shaped spring holder 303 extends from the guide slot 109 to the embedded slot 105 .

[0032] Wherein, triangular blocks 306 are fixedly installed at both ends of the U-shaped spring rack 303 , and the triangular blocks 306 can be inserted into the triangular grooves 305 , and the triangular grooves 305 are provided on both sides of the insertion groove 304 .

[0033] Among them, the C-shaped spring rack 303 can be extended and pulled out from the embedded groove 105, so that the C-shaped spring rack 303 can drive the triangular blocks 306 on both sides to be pulled and inserted into the triangular groove 305 in the insertion groove 304, and then the push ring 301 can be driven to slide out of the spacing groove 108 by pushing the extended C-shaped spring rack 303, so that the push ring 301 can bring the sludge in the inner ring diameter out of the feed groove 106.

[0034] Through the design of the push ring 301, the guide column 302, the U-shaped spring rack 303, the insertion groove 304, the triangular groove 305 and the triangular block 306, after the sampling is completed, the staff can pull the sealing plate 104 upward from the embedded groove 105 to expose the U-shaped spring rack 303, and then the staff can pull the U-shaped spring rack 303 out of the embedded groove 105 as needed, so that the U-shaped spring rack 303 can drive the triangular blocks 306 on both sides to be pulled and inserted into the triangular groove 305 in the insertion groove 304, and then the push ring 301 can be driven to slide out of the spacing groove 108 by pushing the extended U-shaped spring rack 303, so that the push ring 301 can remove the sludge in the inner ring diameter from the feed groove 1 06, so that the push ring 301 can separately intercept the silt at this depth from the feed trough 106, which makes it possible to accurately obtain samples of the required depth in complex silt layers, meeting the needs of different research or detection purposes for silt samples of specific depths. The staff can then pinch the two sides of the U-shaped bomb rack 303 to take out the triangular block 306 from the triangular groove 305, and then the U-shaped bomb rack 303 can be inserted into the insertion groove 304, and then the push ring 301 can be pressed to slide into the guide groove 109 through the guide columns 302 at both ends, and at the same time, the push ring 301 can fit into the spacing groove 108, so that the inner ring diameter of the push ring 301 is connected with the feed trough 106 for next use.

[0035] According to the above technical scheme, the working steps of this scheme are summarized and sorted out: when sampling sludge, the outer surface of the lifting handle 101 can be held to insert the plug 4 into the sludge through the cone head 103, so that the sludge can enter the feed groove 106 of the plug 4 to push the closing cover 107 open. At the same time, it will also drive the floating plate 202 with damping sliding installation on the outer surface to touch the surface of the sludge and slide on the outer surfaces of the plug 4, the plug block 1 and the damping rod 201. This action can mark the position of the sludge surface when the plug 4 starts to be inserted into the sludge, which provides a method for accurately measuring the depth of the plug 4 inserted into the sludge. A reliable starting reference point, and as the insertion depth increases, the sludge can pass through the feed trough 106 to enter the inner ring diameter of the multiple push rings 301, and then the staff can pull the lifting handle 101 to pull the plug 4 out of the sludge. After the plug 4 is pulled out of the sludge, the float 202 will stay in the current position through the damping force, and then the staff can read the insertion depth into the sludge through the scale 203 according to the position where the float 202 stays. After confirming the insertion depth, the float 202 can be pushed down back to its original position, and the float 202 is between the plug 4, the plug block 1 and the damping rod 2. When the outer surface of 01 slides downward, the silt adhered to the outer surfaces of the plug column 4 and the plug block 1 will be scraped off, and then the sealing plate 104 can be pulled upward from the embedded groove 105 to expose the U-shaped spring rack 303, and then the staff can pull the U-shaped spring rack 303 out of the embedded groove 105 as needed, so that the U-shaped spring rack 303 can drive the triangular blocks 306 on both sides to be pulled and inserted into the triangular groove 305 in the insertion groove 304, and then the push ring 301 can be driven to slide out of the spacing groove 108 by pushing the extended U-shaped spring rack 303, so that the push ring 301 The sludge in the inner ring diameter is brought out from the feed trough 106, so that the push ring 301 can separately intercept the sludge at this depth position from the feed trough 106, and then the staff can pinch the two sides of the U-shaped bullet rack 303 to take out the triangular block 306 from the triangular groove 305, and then the U-shaped bullet rack 303 can be inserted into the insertion groove 304, and then the push ring 301 can be pressed to slide into the guide groove 109 through the guide columns 302 at both ends, and at the same time, the push ring 301 can fit into the spacing groove 108, so that the inner ring diameter of the push ring 301 is connected with the feed trough 106 for next use.

[0036] In summary: the sludge sampling device can separately intercept sludge at different depths from the feed trough 106, which makes it possible to accurately obtain samples of the required depth in a complex sludge layer, meeting the needs of different research or detection purposes for sludge samples of specific depth.

[0037] Parts not involved in the present invention are the same as the prior art or can be implemented by the prior art. Although the embodiments of the present invention have been shown and described, it is understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A sludge sampling device, characterized in that: include: An insert column (4) is provided with a feed groove (106) in the insert column (4), a cone head (103) is connected and installed on the lower surface of the insert column (4), a plurality of groups of spacing grooves (108) are provided in the middle section of the insert column (4), a guide groove (109) is connected and opened in each group of the spacing grooves (108), and a sampling mechanism (3) is slidably installed in the spacing grooves (108) and the guide grooves (109).

2. A sludge sampling device according to claim 1, characterized in that: An insert block (1) is fixedly mounted on one end of the outer surface of the insert column (4); an inner groove (105) is formed at one end of the insert block (1); the inner groove (105) is communicated with the guide groove (109); a push end of the sampling mechanism (3) extends into the inner groove (105); a sealing plate (104) is slidably mounted in the inner groove (105), so that the sealing plate (104) can seal the sampling mechanism (3) in the inner groove (105); The outer surfaces of the plug post (4) and the plug block (1) are equipped with a depth measuring mechanism (2) in a damped sliding manner, so that when the plug post (4) is inserted into the mud, the depth measuring mechanism (2) touches the surface of the mud and slides on the outer surfaces of the plug post (4) and the plug block (1), so that the depth measuring mechanism (2) can directly sense the position of the mud surface, thereby providing a starting reference point for accurately measuring the depth of the plug post (4) inserted into the mud.

3. A sludge sampling device according to claim 2, characterized in that: A lifting handle (101) is fixedly mounted on the upper surfaces of the insertion column (4) and the insertion block (1).

4. A sludge sampling device according to claim 2, characterized in that: The outer surface of the plug post (4) is provided with an air hole (102), and the air hole (102) is connected to the feed trough (106), so that when the sludge enters the feed trough (106), the gas in the feed trough (106) is discharged to the outside through the air hole (102). The lower half of the feed trough (106) is provided with a turnover groove (110) on both sides, and the two groups of the turnover grooves (110) are rotatably installed with a closing cover (107), so that when the sludge slides down in the feed trough (106), it will push the two groups of closing covers (107) to cover the lower half of the feed trough (106).

5. A sludge sampling device according to claim 4, characterized in that: The depth measuring mechanism (2) comprises two groups of damping rods (201), the two groups of damping rods (201) being fixedly mounted at two ends of the outer surface of the plug column (4), the outer surfaces of the two groups of damping rods (201) being dampingly slidably mounted with floating plates (202), the floating plates (202) dampingly sliding on the outer surfaces of the damping rods (201) being simultaneously slidably sleeved on the outer surfaces of the plug column (4) and the plug block (1).

6. A sludge sampling device according to claim 5, characterized in that: Both ends of the plug block (1) are provided with scales (203), and the float plate (202) is slidably sleeved inside the scales (203), so that when the float plate (202) contacts the surface of the silt and slides on the outer surfaces of the plug column (4) and the plug block (1), the insertion depth can be read through the scales (203).

7. A sludge sampling device according to claim 6, characterized in that: The sampling mechanism (3) comprises a push ring (301), the outer surface of which is fixedly mounted with a guide column (302), the push ring (301) being slidably inserted into the guide groove (109) via the guide column (302), and the push ring (301) being able to fit into the spacing groove (108), so that the inner ring diameter of the push ring (301) is connected to the feed groove (106).

8. A sludge sampling device according to claim 7, characterized in that: An insertion slot (304) is provided in the guide column (302), a U-shaped spring holder (303) is slidably mounted in the insertion slot (304), and the U-shaped spring holder (303) extends from the guide slot (109) to the embedded slot (105).

9. A sludge sampling device according to claim 8, characterized in that: Triangular blocks (306) are fixedly mounted on both ends of the U-shaped spring rack (303). The triangular blocks (306) can be inserted into triangular grooves (305). The triangular grooves (305) are arranged on both sides of the insertion groove (304).

10. A sludge sampling device according to claim 9, characterized in that: The U-shaped spring rack (303) can be extended and pulled out from the embedded groove (105), so that the U-shaped spring rack (303) can drive the triangular blocks (306) on both sides to be pulled and inserted into the triangular grooves (305) in the insertion grooves (304), and then the push ring (301) can be driven to slide out of the spacing groove (108) by pushing the extended U-shaped spring rack (303), so that the push ring (301) can bring the sludge in the inner ring diameter out of the feed groove (106).

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