CN219573625U

CN219573625U - Sewage sampling device

Info

Publication number: CN219573625U
Application number: CN202320498792.4U
Authority: CN
Inventors: 谈帅; 陈梦雪; 韩笑; 陈道康; 黄勇; 林国良; 朱暠
Original assignee: Nanjing Gaoke Environmental Technology Co ltd
Current assignee: Nanjing Gaoke Environmental Technology Co ltd
Priority date: 2023-03-15
Filing date: 2023-03-15
Publication date: 2023-08-22
Anticipated expiration: 2033-03-15

Abstract

The utility model discloses a sewage sampling device, which comprises a sampling tube and a suction assembly, wherein the sampling tube comprises an upper tube body, an air tube connector and a lower tube body; the top of the upper cylinder is provided with a sealing head, and the bottom is welded with a baffle plate; an accommodating space is formed among the upper cylinder body, the sealing head and the partition plate; the air pipe joint is coaxially arranged at the top of the seal head and is communicated with the accommodating space; the air pipe connector is externally bound with an air pipe, and the air pipe is detachably connected with an external air supply device, such as an air storage bottle, an air pump and the like; the lower cylinder is arranged at the bottom of the partition plate and is used for accommodating a water sample; the inner diameter of the lower cylinder is smaller than that of the upper cylinder, the bottom end of the lower cylinder is of a conical structure, and a sampling port is formed in the bottom end of the lower cylinder; this sewage sampling device can satisfy the sampling demand of different degree of depth, has improved the suitability.

Description

Sewage sampling device

Technical Field

The utility model relates to a sewage sampling device, and belongs to the technical field of sewage detection.

Background

In regional environmental monitoring and assessment work, sewage is often sampled and detected. The common sewage sampling device is a simple sampling barrel, can meet the basic sampling requirement, is difficult to sample in partial scenes, and needs to be poured into a sampling bottle after sewage is taken, so that the conditions of leakage, splashing and the like exist, and inconvenience is caused to sampling work. In order to improve convenience, one type of sewage sampling device commonly used by the prior art is a cup-type depth-setting sampler, the sampler has a certain length, after the sewage is deeply filled, a central screw is driven to rotate by manually rotating a handle, so that the central screw moves downwards relative to an external sleeve, a sampling cup at the bottom end of the screw can be separated from a sealing state with the external sleeve, and the sewage flows into the sampling cup. However, the cup-type depth-setting sampler is still limited in overall adjustable length, and can not be operated manually when a deeper sewage water sample needs to be taken, so that the sampling requirement can not be met.

Disclosure of Invention

In order to solve the defects in the prior art, the utility model provides the sewage sampling device which can meet the sampling requirements of different depths and improve the applicability.

The technical scheme adopted by the utility model is as follows:

a sewage sampling device comprises a sampling tube and a suction assembly, wherein,

the sampling tube include:

the top of the upper cylinder is provided with a sealing head, and the bottom of the upper cylinder is provided with a baffle; an accommodating space is formed among the upper cylinder body, the sealing head and the partition plate;

the air pipe connector is coaxially arranged at the top of the seal head and is communicated with the accommodating space; the air pipe connector is externally connected with an air pipe, and the air pipe is detachably connected with an external air supply device, such as an air storage bottle, an air pump and the like;

the lower cylinder is arranged at the bottom of the partition plate and is used for accommodating a water sample; a sampling port is arranged at the bottom end of the lower cylinder;

the suction assembly includes:

the piston rod vertically penetrates through the center hole of the partition plate;

the upper piston is arranged at the end part of the piston rod positioned in the upper cylinder body, is attached to the inner wall of the upper cylinder body and is arranged in a relative sliding manner;

the spring is sleeved on the piston rod body positioned between the upper piston and the partition plate;

the lower piston is arranged at the end part of the piston rod in the lower cylinder body, is attached to the inside of the lower cylinder body and is arranged in a relative sliding way.

Preferably, the bottom end of the lower cylinder body is in a conical structure.

Preferably, a plurality of lifting lugs are arranged on the top of the seal head in a surrounding mode, and the lifting lugs are connected with a hanging wire.

Preferably, a sealing gasket is arranged at the abutting end of the air pipe joint and the sealing head.

Preferably, sealing rings are arranged at the abutting end of the partition plate and the upper cylinder body and the abutting end of the partition plate and the lower cylinder body.

Preferably, external threads are arranged at two ends of the piston rod, and the upper piston and the lower piston are in threaded connection with the piston rod at the corresponding ends.

Preferably, the inner diameter of the upper cylinder is larger than the inner diameter of the lower cylinder.

Preferably, the sampling device further comprises a plugging assembly, the plugging assembly comprising:

the follow-up screw is coaxially arranged in the lower cylinder body, and the diameter of the follow-up screw is smaller than the inner diameter of the sampling port; the top end of the follow-up screw is screwed into the bottom rod body of the piston rod, and the bottom extends out of the lower cylinder body;

the upper blocking piece is arranged on the follow-up screw rod in the lower cylinder in a rotating way and is used for preventing a water sample from entering the lower cylinder before sampling;

the lower plugging piece is arranged at the end part of the follow-up screw rod positioned outside the lower cylinder body in a rotating way and is used for preventing the sampled water sample from flowing out of the lower cylinder body.

Preferably, the piston rod bodies above and below the upper piston and the lower piston are also respectively provided with limiting plates for fixing the upper piston and the lower piston in a rotating way.

Preferably, the upper blocking piece is of an inverted truncated cone-shaped structure.

The utility model has the beneficial effects that:

1. the sampling device is connected with the air pipe connector through the air pipe, and the length of the air pipe can be unlimited, so that the sampling device can be hung in sewage to different depths through the air pipe, and then the sampling requirement can be met; in addition, the sampling device can be suspended in the sewage through the suspending and releasing line connected with the lifting lug, and the length of the suspending and releasing line can be unlimited, so that the suspending and releasing line can be lowered into water layers with different depths for sampling;

2. the upper piston can move downwards and upwards when in inflation or deflation by matching with the elastic action of the spring, so that the lower piston can be synchronously driven to move upwards and downwards, and sewage can be sucked into the lower cylinder when in upward movement; the sampling device is not required to be manually operated, and only the gas filling and discharging are required to be controlled, so that the convenience is improved;

3. through setting up the shutoff subassembly below the piston rod, after the piston rod follows the piston and reciprocates, can keep the closure to the sampling mouth, can prevent then that the water sample from getting into barrel down before the sample or prevent that the water sample from flowing out from barrel down after the sample.

Drawings

FIG. 1 is a cross-sectional view of a sewage sampling device provided by the utility model;

FIG. 2 is a corresponding cross-sectional view of the sewage sampling device after being inflated with gas;

the main reference numerals in the figures have the following meanings:

1. the device comprises an upper cylinder body, 2, an air pipe connector, 3, a lower cylinder body, 4, a seal head, 5, a partition board, 6, an air pipe, 7, a lifting lug, 8, a lifting wire, 9, a piston rod, 10, an upper piston, 11, a spring, 12, a lower piston, 13, a limiting plate, 14, a follow-up screw, 15, an upper blocking piece, 16 and a lower blocking piece.

Detailed Description

The utility model is described in detail below with reference to the drawings and examples.

As shown in fig. 1-2: the embodiment is a sewage sampling device, which comprises a sampling tube and a suction assembly, wherein the sampling tube comprises an upper tube body 1, an air tube joint 2 and a lower tube body 3; the top of the upper cylinder body 1 is provided with a sealing head 4, and the bottom is welded with a baffle 5; an accommodating space is formed among the upper cylinder body 1, the sealing head 4 and the partition board 5; the air pipe joint 2 is coaxially arranged at the top of the seal head 4 and is communicated with the accommodating space; the air pipe joint 2 is externally bound with an air pipe 6, and the air pipe 6 is detachably connected with an external air supply device, such as an air storage bottle, an air pump and the like; the lower cylinder 3 is arranged at the bottom of the partition board 5 and is used for accommodating a water sample; the inner diameter of the lower cylinder body 3 is smaller than that of the upper cylinder body 1, the bottom end of the lower cylinder body 3 is of a conical structure, and a sampling port is formed in the bottom end of the lower cylinder body 3.

In order to facilitate the hanging of the sampling device, a plurality of lifting lugs 7 are arranged on the top of the seal head 4 in a surrounding mode, and the lifting lugs 7 are connected with hanging and paying-off lines 8.

The suction assembly comprises a piston rod 9, an upper piston 10, a spring 11 and a lower piston 12, wherein the piston rod 9 vertically penetrates through a central hole of the partition plate 5, and external threads are formed at two ends of the piston rod 9; the upper piston 10 is rotatably arranged at the end part of the piston rod 9 positioned in the upper cylinder body 1, is attached to the inner wall of the upper cylinder body 1 and is arranged in a relative sliding manner; the spring 11 is sleeved on the rod body of the piston rod 9 positioned between the upper piston 10 and the partition plate 5; the lower piston 12 is rotatably arranged at the end part of the piston rod 9 positioned in the lower cylinder 3, and is attached to the inside of the lower cylinder 3 and is arranged in a relatively sliding manner.

The upper piston 10 and the lower piston 12 can be made of rubber materials; the limiting plates 13 for fixing the upper piston 10 and the lower piston 12 are respectively arranged on the rod bodies of the piston rods 9 above and below the upper piston 10 and the lower piston 12 in a rotating manner, and the tightness between the pistons and the cylinder body can be improved through the limiting plates 13 on one hand, and the fixing effect on the pistons can be guaranteed on the other hand.

In order to ensure the tightness of the sampling device, the air pipe joint 2 and the seal head 4 and the baffle 5 and the lower cylinder 3 are connected through bolts in practical application; a sealing gasket is arranged at the abutting end of the air pipe joint 2 and the sealing head 4; and sealing rings are arranged at the abutting end of the baffle plate 5 and the upper cylinder body 1 and the abutting end of the baffle plate 5 and the lower cylinder body 3.

When sampling is performed, firstly, gas is filled into the upper cylinder 1 through the gas pipe 6 by using a gas storage bottle or a gas pump, the gas acts on the upper piston 10 after being filled, and the upper piston 10 extrudes and moves down the spring 11; the piston rod 9 and the lower piston 12 at the bottom end will also move downwards until the spring 11 reaches the compression limit, i.e. the cylinder 1 can no longer be filled with gas and then stopped.

Then the lower part of the sampling device is lifted to the sewage through a lifting and paying-off line 8, after the sewage is lowered to the approximately required depth, the gas in the upper cylinder 1 is slowly discharged through the gas pipe 6, the upper piston 10 is jacked up under the reaction force of the spring 11, the piston rod 9 and the lower piston 12 can be driven to move upwards, and the lower piston 12 can generate suction force to suck the sewage into the lower cylinder 3 when moving upwards, so that the sewage sampling is completed; after the sampling is finished, the sewage can be discharged by injecting gas again.

In order to prevent the situation that the sewage enters the lower cylinder 3 before sampling and the sewage possibly flows out of the lower cylinder 3 after sampling, a plugging component is also arranged in the lower cylinder 3.

The plugging assembly comprises a follow-up screw 14, an upper plugging member 15 and a lower plugging member 16; wherein the follower screw 14 is coaxially arranged in the lower cylinder 3 and has a diameter smaller than the inner diameter of the sampling port; the top end of the follow-up screw 14 is screwed into the bottom rod body of the piston rod 9, and the bottom extends out of the lower cylinder 3; the upper plugging piece 15 is arranged on the follow-up screw 14 in the lower cylinder 3 in a rotating way; the upper plugging piece 15 is of an inverted truncated cone structure; the lower blocking piece 16 is screwed on the end of the follower screw 14 located outside the lower cylinder 3.

Rubber materials can be adopted for the upper blocking piece 15 and the lower blocking piece 16; referring to fig. 1, when the spring 11 is in a normal supporting state, the lower blocking member 16 will block the sampling port from below; referring to fig. 2, after the spring 11 is in a fully compressed state, the upper closure member 15 will close the sampling port from above.

Therefore, after the gas is filled into the upper cylinder 1 before sampling, the sampling device is in the state shown in fig. 2, so after the sampling device is suspended in the sewage, the upper plugging piece 15 plugs the sampling port from above, and the sewage can be prevented from entering the lower cylinder 3 before sampling; similarly, after the gas in the upper cylinder 1 is discharged after sampling, the inside of the sampling device will be in the state shown in fig. 1, and the lower blocking member 16 will block the sampling port from below, so that the condition that the sewage may flow out from the lower cylinder 3 after sampling can be prevented.

The foregoing is merely illustrative of the preferred embodiments of this utility model, and it will be appreciated by those skilled in the art that variations and modifications may be made without departing from the principles of this utility model, and such variations and modifications are to be regarded as being within the scope of this utility model.

Claims

1. A sewage sampling device is characterized by comprising a sampling tube and a suction assembly, wherein,

the sampling tube include:

the air pipe connector is coaxially arranged at the top of the seal head and is communicated with the accommodating space; the air pipe connector is externally connected with an air pipe which is connected with an external air supply device;

the suction assembly includes:

2. The wastewater sampling device of claim 1, wherein the bottom end of the lower cylinder is tapered.

3. The sewage sampling device according to claim 1, wherein a plurality of lifting lugs are arranged on the top of the sealing head in a surrounding mode, and the lifting lugs are connected with the hanging and paying-off line.

4. A sewage sampling device according to claim 1, wherein a sealing gasket is provided at the abutting end of the air pipe joint and the closure head.

5. A sewage sampling device according to claim 1, wherein sealing rings are provided at both the abutment end of the partition plate with the upper cylinder and the abutment end of the partition plate with the lower cylinder.

6. A sewage sampling device according to claim 1, wherein the two ends of the piston rod are provided with external threads, and the upper piston and the lower piston are in threaded connection with the piston rod at the corresponding ends.

7. The wastewater sampling device of claim 1 wherein the inner diameter of the upper cylinder is greater than the inner diameter of the lower cylinder.

8. The wastewater sampling device of claim 2, further comprising a plugging assembly, the plugging assembly comprising:

9. The sewage sampling device according to claim 6 or 7, wherein limiting plates for fixing the upper piston and the lower piston are further rotatably arranged on the piston rod bodies above and below the upper piston and the lower piston, respectively.

10. The wastewater sampling device of claim 8, wherein the upper blocking member is of inverted circular truncated cone configuration.