A kind of urban sewage sampling device

Abstract

The utility model discloses a municipal sewage sampling device, which relates to the technical field of sewage sampling devices, including a sampling barrel composed of a barrel body and a soft water pipe, and also includes a bracket assembly and a suction assembly, wherein the bracket assembly includes a support and limit unit and an automatic unlocking and resetting unit; the support and limit unit is used to provide support and limit for the lifting and lowering movement of the suction assembly; the automatic unlocking and resetting unit is used to provide locking and resetting elastic force for the suction assembly after it moves downward, and unlocks under the buoyancy of water to achieve self-reset of the suction assembly; the suction assembly moves downward to discharge the air inside the barrel body, and the downward suction assembly moves upward and resets to suck sewage into the barrel body to achieve sewage sampling. The utility model sets the water volume of a single sampling according to needs by arranging a suction assembly with an adjustable function, thereby further improving the flexibility of the sampling operation.

Description

Technical Field

[0001] The utility model relates to the technical field of sewage sampling devices, in particular to a municipal sewage sampling device. Background Art

[0002] Urban sewage sampling refers to the process of extracting water samples from polluted water according to prescribed methods and a certain proportion. By testing and analyzing the extracted water samples, the degree of water pollution, the types and contents of pollutants and other related water quality parameters can be determined, thereby guiding production activities and taking relevant measures to achieve the purpose of reducing water pollution.

[0003] There is an automatic extraction fixed-depth sampling barrel on the market. The sampling barrel adopts the principle of a syringe. Before use, the air in the barrel is emptied first, and then the barrel is placed in the water body. The sampling barrel is equipped with a fixed-depth float. When the sampling barrel reaches the preset depth, the float is pulled up to start extraction, which can realize automatic fixed-depth sampling, thereby accurately completing the sampling requirements at the specified depth. This sampling method effectively avoids the disadvantages of traditional sampling barrels for disturbing the water layer, inaccurate depth setting, and mixing of sampling; however, in the actual sampling process, the amount of sewage sampled each time is fixed, and a small amount of sewage cannot be sampled as needed, and the sampling flexibility is weak. Based on this, a municipal sewage sampling device is provided. Utility Model Content

[0004] The purpose of the utility model is to provide a municipal sewage sampling device in order to solve the above-mentioned problems.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a city sewage sampling device, comprising a sampling barrel composed of a barrel body and a soft water pipe, the soft water pipe is connected to the bottom of one side of the barrel body and is conductive with the inner side of the barrel body, a bracket assembly is arranged on the top of the sampling barrel, a suction assembly penetrating the bracket assembly and extending to the inside of the barrel body is arranged on the top of the barrel body, the bracket assembly comprises a support and limit unit and an automatic unlocking and resetting unit; the support and limit unit is used to provide support and limit for the lifting and lowering movement of the suction assembly; the automatic unlocking and resetting unit is used to provide locking and resetting elastic force for the suction assembly after it moves downward, and unlocks it under the buoyancy of water to realize the self-resetting of the suction assembly; the suction assembly moves downward to discharge the air inside the barrel body, and the suction assembly that moves downward moves upward and resets to suck sewage into the barrel body to realize sewage sampling.

[0006] As a further solution of the utility model: the support and limiting unit includes a cross support frame and a limiting protrusion, the cross support frame is fixed to the top of the barrel body, and the limiting protrusion is fixed to the inner side of the annular hole groove in the middle of the cross support frame; the suction assembly includes a lifting cylinder, a connecting plate, a limiting slide groove, a knob, a threaded rod, an adjusting cylinder, and a piston plate; the limiting slide groove is opened on the outside of the lifting cylinder, the lifting cylinder is vertically slidably connected to the inner side of the annular hole groove in the middle of the cross support frame, and the limiting slide groove is slidably connected to the limiting protrusion, the connecting plate is fixed to the bottom end of the lifting cylinder and Distributed on the inner side of the barrel body; the threaded rod is fixed to the bottom end of the knob and extends through the inner side of the lifting cylinder, and the threaded rod and the knob are in a limited rotation connection state; the adjusting cylinder is distributed on the inner side of the lifting cylinder and is threadedly connected to the outer side of the bottom of the threaded rod, and the bottom end of the adjusting cylinder extends through the lifting cylinder and the connecting plate to the bottom of the connecting plate and is fixedly connected to the piston plate, and the outer diameter of the piston plate matches the inner diameter of the barrel body; the air inside the barrel body is squeezed out by moving the piston plate downward, and the air inside the barrel body is squeezed out by moving the piston plate upward to generate negative pressure inside the barrel body to realize sewage extraction and sampling.

[0007] As a further solution of the utility model: the suction assembly also includes a limiting groove, an annular self-locking part, and a limiting strip; the annular self-locking part is composed of an inner ring part, a connecting part, and an outer ring part, the inner ring part is threadedly connected to the outside of the threaded rod, and the outer ring part is sleeved on the outside of the lifting cylinder, and the outer ring part is provided with an annular groove on the outside that cooperates with the automatic unlocking and resetting unit to lock, the inner ring part and the outer ring part are connected and fixed by the connecting part, and the connecting part is slidably connected to the inner side of the limiting slide groove; the limiting groove is opened on the side of the inner side of the lifting cylinder away from the limiting slide groove and completely penetrates to the bottom of the connecting disk, the limiting strip is fixed to the outside of the adjusting cylinder and slidably sleeved with the limiting groove; the threaded rod is driven to rotate by turning the knob to realize the same-direction and synchronous lifting and lowering operation of the annular self-locking part and the piston disk, and the horizontal height adjustment of the piston disk is used to realize the capacity adjustment of a single sampling.

[0008] As a further solution of the utility model: the automatic unlocking and resetting unit includes a connecting seat, a Z-shaped locking rod, and a fixed-depth float; the connecting seat is fixed to the top of a horizontal arm of a cross support frame, the Z-shaped locking rod is rotatably connected to the inner side of the connecting seat, and one end of the Z-shaped locking rod is close to the lifting cylinder column, and the other end of the Z-shaped locking rod is connected to the fixed-depth float through a connecting rope; when the annular self-locking part moves downward, one end of the Z-shaped locking rod is clamped on the inner side of the annular clamping groove to achieve position locking of the suction assembly; the water buoyancy acts on the fixed-depth float to pull the other end of the Z-shaped locking rod upward, so as to make one end of the Z-shaped locking rod flip downward and squeeze the annular self-locking part to make it move downward, thereby achieving the separation and unlocking of the Z-shaped locking rod and the annular self-locking part.

[0009] As a further solution of the utility model: the automatic unlocking and resetting unit also includes a fixing column and an elastic rubber band; a groove penetrating to the outside of the cross arm is opened at the bottom of the cross arm of the cross support frame, and the fixing column is fixed inside the groove; one end of the elastic rubber band is fixedly connected to the bottom of the outer side of the barrel body, and the other end of the elastic rubber band passes through the top of the fixing column and extends to the inside of the barrel body and is fixedly connected to the upper surface of the connecting plate; when the suction assembly moves downward, the elastic rubber band is stretched, and the stretched elastic rubber band is used to provide a reset force for the upward movement of the suction assembly.

[0010] As a further solution of the utility model: the outer wall diameter of the connecting plate is smaller than the inner wall diameter of the barrel body, and the bottom outer side of the lifting cylinder column is also formed with an annular protrusion with an outer diameter larger than the inner diameter of the annular hole groove in the middle of the cross support frame; the top outer side of the lifting cylinder column is also rotatably connected with a hanging ring.

[0011] As a further solution of the utility model: when the annular self-locking member is clamped with the Z-shaped locking rod, there is a gap space between the bottom of the annular self-locking member and the upper surface of the cross support frame and between the lower surface of the piston disk and the bottom of the inner wall of the barrel body.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] By providing a suction component with an adjustable function, the amount of water for a single sampling can be set according to needs, thereby further improving the flexibility of the sampling operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the structure of the utility model;

[0015] Figure 2 It is a structural schematic diagram of the suction component of the utility model in a downward moving state;

[0016] Figure 3 It is a schematic diagram of the internal structure of the sampling barrel and the bracket assembly of the utility model;

[0017] Figure 4 It is a schematic diagram of the disassembled structure of the sampling barrel and the suction assembly of the utility model;

[0018] Figure 5 It is a schematic diagram of the internal structure of the suction component of the utility model.

[0019] In the figure: 1. sampling barrel; 101. barrel body; 102. soft water pipe; 2. bracket assembly; 201. cross support frame; 202. limit convex block; 203. fixing column; 204. connecting seat; 205. Z-shaped locking rod; 206. fixed depth float; 207. elastic rubber band; 3. suction assembly; 301. lifting column; 302. connecting plate; 303. limit slide groove; 304. limit groove; 305. knob; 306. threaded rod; 307. annular self-locking part; 3071. inner ring part; 3072. connecting part; 3073. outer ring part; 3074. annular slot; 308. adjusting column; 309. piston plate; 310. limit strip; 311. hanging ring. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] See also Figures 1 to 5 In an embodiment of the utility model, a municipal sewage sampling device comprises a sampling barrel 1 consisting of a barrel body 101 and a soft water pipe 102, the soft water pipe 102 is connected to the bottom of one side of the barrel body 101 and is conductive with the inner side of the barrel body 101, a bracket assembly 2 is arranged on the top of the sampling barrel 1, a suction assembly 3 penetrating the bracket assembly 2 and extending to the inside of the barrel body 101 is arranged on the top of the barrel body 101, the bracket assembly 2 comprises a support and limiting unit and an automatic unlocking and resetting unit; the support and limiting unit is used to provide support and limiting for the lifting and lowering movement of the suction assembly 3; the automatic unlocking and resetting unit is used to provide locking and resetting elastic force for the suction assembly 3 after it moves down, and unlocks it under the buoyancy of water to realize the self-resetting of the suction assembly 3; the suction assembly 3 moves down to discharge the air inside the barrel body 101, and the suction assembly 3 that moves down moves up and resets to suck sewage into the barrel body 101 to realize sewage sampling.

[0022] The support and limiting unit includes a cross support frame 201 and a limiting protrusion 202 . The cross support frame 201 is fixed to the top of the barrel body 101 , and the limiting protrusion 202 is fixed to the inner side of the annular hole groove in the middle of the cross support frame 201 .

[0023] The suction assembly 3 includes a lifting cylinder 301, a connecting plate 302, a limiting slide groove 303, a limiting groove 304, a knob 305, a threaded rod 306, an annular self-locking member 307, an adjusting cylinder 308, a piston disc 309, a piston disc 309, and a limiting strip 310; the limiting slide groove 303 is arranged on the outside of the lifting cylinder 301, the lifting cylinder 301 is vertically slidably connected to the inner side of the annular hole groove in the middle of the cross support frame 201, and the limiting slide groove 303 is slidably connected to the limiting protrusion 202, the connecting plate 302 is fixed to the bottom end of the lifting cylinder 301 and is distributed on the inner side of the barrel body 101; the threaded rod 306 is fixed to the bottom end of the knob 305 It extends through the inner side of the lifting column 301, and the threaded rod 306 and the knob 305 are in a limited rotation connection state; the adjusting column 308 is distributed on the inner side of the lifting column 301 and is threadedly connected to the outer side of the bottom of the threaded rod 306, and the bottom end of the adjusting column 308 extends through the lifting column 301 and the connecting plate 302 to the bottom of the connecting plate 302 and is fixedly connected to the piston plate 309, and the outer diameter of the piston plate 309 matches the inner diameter of the barrel body 101; the air inside the barrel body 101 is squeezed out by moving the piston plate 309 downward, and the piston plate 309 is moved upward to generate negative pressure inside the barrel body 101 to realize sewage extraction and sampling.

[0024] The annular self-locking member 307 is composed of an inner ring portion 3071, a connecting portion 3072, and an outer ring portion 3073. The inner ring portion 3071 is threadedly connected to the outside of the threaded rod 306, and the outer ring portion 3073 is sleeved on the outside of the lifting column 301, and an annular groove 3074 is provided on the outside of the outer ring portion 3073 for locking with the automatic unlocking and resetting unit. The inner ring portion 3071 and the outer ring portion 3073 are connected and fixed by the connecting portion 3072, and the connecting portion 3072 is slidably connected to the inner side of the limiting slide groove 303. The limiting groove 304 is arranged on the inner side of the lifting column 301 away from the limiting slide groove 303 and completely penetrates to the bottom of the connecting plate 302. The limiting strip 310 is fixed to the outer side of the adjusting column 308 and is slidably connected with the limiting groove 304. The threaded rod 306 is driven to rotate by rotating the knob 305 to realize the same-direction and synchronous lifting and lowering operation of the annular self-locking part 307 and the piston disk 309. The horizontal height adjustment of the piston disk 309 is used to realize the capacity adjustment of a single sampling.

[0025] The automatic unlocking and resetting unit includes a fixed column 203, a connecting seat 204, a Z-shaped locking rod 205, a fixed depth floating ball 206, and an elastic rubber band 207; the connecting seat 204 is fixed to the top of a horizontal arm of the cross support frame 201, and the Z-shaped locking rod 205 is rotatably connected to the inner side of the connecting seat 204, and one end of the Z-shaped locking rod 205 is close to the lifting cylinder column 301, and the other end of the Z-shaped locking rod 205 is connected to the fixed depth floating ball 206 through a connecting rope; when the annular self-locking member 307 moves downward, one end of the Z-shaped locking rod 205 is clamped on the inner side of the annular clamping groove 3074 to achieve position locking of the suction component 3; the water buoyancy acts on the fixed depth floating ball 206 to pull the other end of the Z-shaped locking rod 205 upward, so as to make one end of the Z-shaped locking rod 205 flip downward and squeeze the annular self-locking member 307 to make it move downward, thereby achieving the separation and unlocking of the Z-shaped locking rod 205 and the annular self-locking member 307.

[0026] A groove is provided at the bottom of the cross arm of the cross support frame 201 and extends to the outside of the cross arm, and the fixing column 203 is fixed inside the groove; one end of the elastic rubber band 207 is fixedly connected to the bottom of the outside of the barrel body 101, and the other end of the elastic rubber band 207 passes through the top of the fixing column 203 and extends to the inside of the barrel body 101 and is fixedly connected to the upper surface of the connecting plate 302; when the suction component 3 moves downward, the elastic rubber band 207 is stretched, and the stretched elastic rubber band 207 is used to provide a reset force for the upward movement of the suction component 3

[0027] The outer wall diameter of the connecting plate 302 is smaller than the inner wall diameter of the barrel body 101, and the bottom outer side of the lifting cylinder 301 is also formed with an annular protrusion with an outer diameter larger than the inner diameter of the annular hole groove in the middle of the cross support frame 201; the top outer side of the lifting cylinder 301 is also rotatably connected with a hanging ring 311.

[0028] In this embodiment, the operation steps of the sampling device are as follows:

[0029] The suction assembly 3 is manually pressed to move downward as a whole, the piston disc 309 moves downward to squeeze the air inside the barrel body 101 so that it is discharged along the soft water pipe 102, and the connecting disc 302 moves downward to stretch the elastic rubber band 207.

[0030] When the annular self-locking piece 307 is close to the Z-shaped locking rod 205, the Z-shaped locking rod 205 is manually rotated so that the end of the Z-shaped locking rod 205 close to the lifting column 301 is rotated downward, so that the end of the Z-shaped locking rod 205 close to the lifting column 301 can avoid the moving area of ​​the annular self-locking piece 307, so that the annular self-locking piece 307 can move down smoothly. When the lower surface of the annular self-locking piece 307 is in contact with the upper surface of the cross support frame 201, the Z-shaped locking rod 205 is rotated in the opposite direction, and the end of the Z-shaped locking rod 205 close to the lifting column 301 is rotated to the inner area of ​​the annular groove 3074. At this time, the pressure on the suction component 3 can be released, and the suction component 3 moves upward under the elastic force of the elastic rubber band 207. At this time, the annular self-locking piece 307 pushes one end of the Z-shaped locking rod 205 upward, and the other end of the Z-shaped locking rod 205 is squeezed on the upper surface of the cross support frame 201 and cannot rotate, thereby realizing the self-locking of the suction component 3.

[0031] Afterwards, the entire device can be placed into the area to be sampled. When the sampling barrel 1 sinks below the liquid surface, the depth-fixing float 206 floats above the liquid surface. When the sampling barrel 1 sinks to the set depth, the connecting rope between the depth-fixing float 206 and the Z-shaped locking rod 205 is tightened. Under the action of the buoyancy of the water, the depth-fixing float 206 pulls the other end of the Z-shaped locking rod 205 upward, and the Z-shaped locking rod 205 rotates to squeeze the annular self-locking piece 307 downward, so that the suction component 3 moves slightly downward relative to the sampling barrel 1, and finally the Z-shaped locking rod 205 is separated from the annular self-locking piece 307. At this time, the suction component 3 loses its limit and will move upward and reset under the action of the elastic rubber band 207, so that negative pressure can be generated inside the barrel body 101, and the external sewage is sucked into the barrel body 101 through the soft water pipe 102, completing the sampling operation.

[0032] After the entire device is pulled ashore, the sampled sewage can be discharged into the collection device by unfolding the soft water pipe 102 downward. It should be noted that a C-shaped buckle is provided on the top of the barrel body 101 to clamp the soft water pipe 102, so that the mouth of the soft water pipe 102 is set upward in the normal state.

[0033] When sampling, the water volume for a single sampling can be set as needed. The operation method is as follows:

[0034] By turning the knob 305, the threaded rod 306 is driven to rotate. Since the lifting column 301, the annular self-locking member 307, and the adjusting column 308 cannot rotate, the annular self-locking member 307 and the adjusting column 308 will realize the lifting operation with the cooperation of the threaded structure, and then realize the height adjustment of the piston disc 309. For example, the piston disc 309 moves down 5cm, and its annular self-locking member 307 moves down 5cm synchronously. In this way, when the suction component 3 is pressed downward, its overall downward height is shortened by 5cm compared with the previous one. Correspondingly, when the subsequent upward suction is performed, the height of the suction space is shortened by 5cm, that is, the purpose of reducing the sampled water volume is achieved. This structure can make the sampling operation more flexible. It should be noted that the barrel body 101 can be made of a transparent material, and a scale is marked on its outer side to conveniently judge the adjusted water volume capacity.

[0035] Please refer to Figure 3 When the annular self-locking member 307 is engaged with the Z-shaped locking rod 205 , there is a gap space between the bottom of the annular self-locking member 307 and the upper surface of the cross support frame 201 and between the lower surface of the piston disk 309 and the bottom of the inner wall of the barrel body 101 .

[0036] In this embodiment: this structure can provide downward movement space for the Z-shaped locking rod 205 to squeeze the annular self-locking member 307, thereby ensuring smooth unlocking of the Z-shaped locking rod 205 and the annular self-locking member 307.

[0037] What is described above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A municipal sewage sampling device, comprising a sampling barrel (1) consisting of a barrel body (101) and a soft water pipe (102), wherein the soft water pipe (102) is connected to the bottom of one side of the barrel body (101) and is in communication with the inner side of the barrel body (101), characterized in that: A support assembly (2) is arranged on the top of the sampling barrel (1), and a suction assembly (3) is arranged on the top of the barrel body (101) and passes through the support assembly (2) and extends into the interior of the barrel body (101). The support assembly (2) comprises a support and limit unit and an automatic unlocking and resetting unit; the support and limit unit is used to provide support and limit for the lifting and lowering movement of the suction assembly (3); the automatic unlocking and resetting unit is used to provide locking and resetting elastic force for the suction assembly (3) after it moves downward, and unlocks under the action of the buoyancy of water to achieve self-resetting of the suction assembly (3).

2. A municipal sewage sampling device according to claim 1, characterized in that: The support and limiting unit comprises a cross support frame (201) and a limiting protrusion (202); the cross support frame (201) is fixed to the top of the barrel body (101); and the limiting protrusion (202) is fixed to the inner side of the annular hole groove in the middle of the cross support frame (201); The suction assembly (3) comprises a lifting column (301), a connecting plate (302), a limiting slide groove (303), a knob (305), a threaded rod (306), an adjustment column (308), and a piston plate (309); the limiting slide groove (303) is arranged on the outside of the lifting column (301); the lifting column (301) is vertically slidably connected to the inner side of the annular hole groove in the middle of the cross support frame (201); the limiting slide groove (303) is slidably connected to the limiting protrusion (202); the connecting plate (302) is fixed to the bottom end of the lifting column (301) and is distributed inside the barrel body (101). side; the threaded rod (306) is fixed to the bottom end of the knob (305) and extends through the inner side of the lifting column (301), and the threaded rod (306) and the knob (305) are in a limited rotation connection state; the adjustment column (308) is distributed on the inner side of the lifting column (301) and is threadedly connected to the outer side of the bottom of the threaded rod (306), and the bottom end of the adjustment column (308) extends through the lifting column (301) and the connecting plate (302) to the bottom of the connecting plate (302) and is fixedly connected to the piston plate (309), and the outer diameter of the piston plate (309) matches the inner diameter of the barrel body (101).

3. A municipal sewage sampling device according to claim 2, characterized in that: The suction assembly (3) further comprises a limiting groove (304), an annular self-locking member (307), and a limiting strip (310); the annular self-locking member (307) comprises an inner ring portion (3071), a connecting portion (3072), and an outer ring portion (3073); the inner ring portion (3071) is threadedly connected to the outside of the threaded rod (306), and the outer ring portion (3073) is sleeved on the outside of the lifting cylinder (301); and the outer side of the outer ring portion (3073) is provided with a locking member that cooperates with the automatic unlocking and resetting unit. The inner ring portion (3071) and the outer ring portion (3073) are connected and fixed via a connecting portion (3072), and the connecting portion (3072) is slidably connected to the inner side of the limiting slide groove (303); the limiting groove (304) is provided on the inner side of the lifting cylinder (301) away from the limiting slide groove (303) and completely penetrates to the bottom of the connecting plate (302); the limiting strip (310) is fixed to the outer side of the adjusting cylinder (308) and is slidably connected to the limiting groove (304).

4. A municipal sewage sampling device according to claim 3, characterized in that: The automatic unlocking and resetting unit comprises a connecting seat (204), a Z-shaped locking rod (205), and a depth-fixing floating ball (206); the connecting seat (204) is fixed to the top of a horizontal arm of a cross support frame (201); the Z-shaped locking rod (205) is rotatably connected to the inner side of the connecting seat (204); one end of the Z-shaped locking rod (205) is close to the lifting cylinder column (301); and the other end of the Z-shaped locking rod (205) is connected to the depth-fixing floating ball (206) via a connecting rope.

5. A municipal sewage sampling device according to claim 4, characterized in that: The automatic unlocking and resetting unit further comprises a fixing column (203) and an elastic rubber band (207); a groove penetrating to the outside of the cross arm is provided at the bottom of the cross arm of the cross support frame (201), and the fixing column (203) is fixed inside the groove; one end of the elastic rubber band (207) is fixedly connected to the bottom of the outside of the barrel body (101), and the other end of the elastic rubber band (207) passes through the fixing column (203) and extends to the inside of the barrel body (101) and is fixedly connected to the upper surface of the connecting plate (302).

6. A municipal sewage sampling device according to claim 2, characterized in that: The outer wall diameter of the connecting plate (302) is smaller than the inner wall diameter of the barrel body (101); the outer side of the bottom of the lifting cylinder (301) is also formed with an annular protrusion whose outer diameter is larger than the inner diameter of the annular hole groove in the middle of the cross support frame (201); and the outer side of the top of the lifting cylinder (301) is also rotatably connected with a hanging ring (311).

7. The urban sewage sampling device according to claim 4, characterized in that: When the annular self-locking member (307) is engaged with the Z-shaped locking rod (205), a gap space is provided between the bottom of the annular self-locking member (307) and the upper surface of the cross support frame (201), and between the lower surface of the piston disc (309) and the bottom of the inner wall of the barrel body (101).

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