An extraction device for sewage detection

Abstract

The utility model discloses a kind of extraction devices for sewage detection, it is related to sewage extraction technical field, including sampling cylinder, the outside of the bottom of sampling cylinder is fixed with filter screen, and the bottom end of sampling cylinder is fixed with inlet and outlet pipe, inlet and outlet pipe is located inside filter screen, the top of sampling cylinder is fixed with air cylinder, air cylinder is fixed with gas delivery pipe, one-way valve is installed on gas delivery pipe, and gas delivery pipe is fixed with exhaust pipe, exhaust valve is installed on exhaust pipe, the inside of air cylinder top is fixed with return spring. Sampling cylinder is moved to sewage sampling position using strut assembly, the filter screen of the bottom of sampling cylinder can separate the float of sewage surface layer, so that sampling cylinder samples sewage, float cannot enter sampling cylinder, convenient subsequent detection of sewage, and sampling cylinder is vertically inserted into sewage can be taken out with multilevel height sewage, in this way, it is favorable to improve the accuracy of subsequent sewage detection.

Description

Technical Field

[0001] This utility model relates to the field of wastewater extraction technology, and in particular to an extraction device for wastewater detection. Background Technology

[0002] Wastewater refers to wastewater discharged from domestic and industrial processes that has been polluted to some extent. Water that has lost its original function is simply called wastewater. Wastewater is caused by the introduction of new substances into the water or changes in external conditions, leading to water deterioration and the inability to maintain its original functionality. In order to effectively purify and treat wastewater, it is necessary to collect wastewater samples for testing in a timely manner.

[0003] When staff use extraction devices to extract sewage samples, the depth of the extracted sewage sample is generally relatively fixed. However, there are slight differences in the substances contained in different depths of sewage. Extracting only the same depth of the sample will affect the accuracy of sewage testing. In addition, sewage often has floating matter on the surface. Directly extracting sewage samples will also extract the floating matter along with the sample, which is not convenient for subsequent sewage testing. Utility Model Content

[0004] The purpose of this application is to provide an extraction device for wastewater testing, in order to solve the problems mentioned in the background art, where the layer height of the wastewater sample extracted by the staff is generally relatively fixed, while the substances contained in different layers of wastewater have slight differences. Extracting only the same layer of water sample will affect the accuracy of wastewater testing. In addition, there are often floating objects on the surface of wastewater. Directly extracting wastewater samples will also extract the floating objects together, which is not convenient for subsequent wastewater testing.

[0005] To achieve the above objectives, this application provides the following technical solution: an extraction device for wastewater testing, comprising a sampling cylinder, a filter screen fixedly sleeved on the outer side of the bottom of the sampling cylinder, and an inlet / outlet pipe fixedly connected to the bottom end of the sampling cylinder, the inlet / outlet pipe being located inside the filter screen; an air cylinder fixedly fixed to the top of the sampling cylinder, an air supply pipe fixedly connected to the air cylinder, a one-way valve installed on the air supply pipe, and an exhaust pipe fixedly connected to the air supply pipe, an exhaust valve installed on the exhaust pipe; a return spring fixedly fixed to the inner side of the top of the air cylinder, a carrier plate fixedly fixed to the bottom end of the return spring, a first piston fixedly fixed to the bottom of the carrier plate, the first piston slidingly engaging with the inner wall of the air cylinder, a guide rod fixedly fixed to the bottom of the first piston, a second piston fixedly fixed to the bottom end of the guide rod; a support rod assembly installed on the sampling cylinder, the support rod assembly being used to support the sampling cylinder and assist in the positional transfer of the sampling cylinder; and a conveying assembly installed on the air supply pipe, the conveying assembly being used to assist in supplying air into the air supply pipe.

[0006] Furthermore, the guide rod, the second piston, the inlet and outlet pipes, and the air cylinder are all located on the same vertical axis.

[0007] Furthermore, a fixing block is fixed to the outer wall of the sampling cylinder, and a first threaded hole adapted to the support rod assembly is provided on the fixing block.

[0008] Furthermore, the strut assembly includes several struts arranged linearly and connected end to end. One end of each strut is fixed with a stud, and the other end of each strut has a second threaded hole that matches the stud.

[0009] Furthermore, the top of the sampling tube is fixedly connected to a pressure balance tube, and the top end of the pressure balance tube is threaded with a sealing cap.

[0010] Furthermore, the delivery assembly includes an air delivery pipe, and a connecting cap is fixedly sleeved on the outside of one end of the air delivery pipe, the connecting cap being threadedly connected to the air delivery pipe.

[0011] Furthermore, a barometer is installed on the gas pipeline.

[0012] In summary, the technical effects and advantages of this utility model are as follows:

[0013] 1. In this utility model, the sampling cylinder is moved to the sewage sampling position using the support rod assembly. The filter screen at the bottom of the sampling cylinder can separate the floating objects on the surface of the sewage, so that the floating objects cannot enter the sampling cylinder when the sampling cylinder is sampling sewage, which facilitates the subsequent testing of sewage. In addition, the vertical insertion of the sampling cylinder into the sewage can remove sewage from multiple levels at the same time, which helps to improve the accuracy of subsequent sewage testing.

[0014] 2. In this utility model, an air pump is used to deliver air into the air delivery pipe along the conveying assembly. The air enters the air pump along the air delivery pipe. As the air pressure increases, it can squeeze the first piston to move down and force the return spring to extend. At the same time as the first piston moves down, it squeezes the guide rod and the second piston to move down, so that the second piston enters the inlet and outlet pipe to complete the sealing of the inlet and outlet pipe. In this way, it can be ensured that the sewage extracted inside the sampling cylinder is trapped inside the sampling cylinder, which facilitates the transfer of sewage after extraction. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the accompanying drawings used in the embodiments or the prior art will be briefly introduced below.

[0016] Figure 1 This is a three-dimensional structural diagram of an extraction device for wastewater detection according to an embodiment of this application;

[0017] Figure 2 This is a diagram showing the connection relationship between the sampling cylinder, filter screen, air cylinder, and air delivery pipe in the embodiments of this application;

[0018] Figure 3 This is a diagram showing the connection relationship between the inlet / outlet pipe, the fixed block, and the air pressure balance pipe in the embodiments of this application.

[0019] Figure 4 This is a diagram showing the positional relationship between the air cylinder, air supply pipe, exhaust pipe, and first piston in an embodiment of this application.

[0020] Figure 5 This is a schematic diagram of the conveying component in an embodiment of this application;

[0021] Figure 6 This is a schematic diagram of the strut assembly in an embodiment of this application.

[0022] In the diagram: 1. Sampling cylinder; 2. Filter screen; 3. Inlet and outlet pipes; 4. Air cylinder; 5. Air supply pipe; 6. Exhaust pipe; 7. Return spring; 8. Carrier plate; 9. First piston; 10. Guide rod; 11. Second piston; 12. Fixing block; 13. First threaded hole; 14. Air pressure balance pipe; 15. Sealing cap; 16. Air supply pipe; 17. Connecting cap; 18. Barometer; 19. Support rod; 20. Stud; 21. Second threaded hole. Detailed Implementation

[0023] 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.

[0024] Example: Reference Figure 1-6The wastewater testing extraction device shown includes a sampling cylinder 1. A filter screen 2 is fixedly sleeved on the outer side of the bottom of the sampling cylinder 1, and an inlet / outlet pipe 3 is fixedly connected to the bottom end of the sampling cylinder 1. The inlet / outlet pipe 3 is located inside the filter screen 2. An air cylinder 4 is fixedly fixed to the top of the sampling cylinder 1. An air supply pipe 5 is fixedly connected to the air cylinder 4. A one-way valve is installed on the air supply pipe 5, and an exhaust pipe 6 is fixedly connected to the air supply pipe 5. An exhaust valve is installed on the exhaust pipe 6. A return spring 7 is fixedly fixed to the inner side of the top of the air cylinder 4. A carrier plate 8 is fixedly fixed to the bottom end of the return spring 7. A first piston 9 is fixed to the bottom of the carrier plate 8. The first piston 9 and the air cylinder 4 are connected... The inner wall of the cylinder 4 slides together, and the bottom of the first piston 9 is fixed with a guide rod 10. Opening the exhaust valve on the exhaust pipe 6 releases the air inside the air cylinder 4, causing the return spring 7 to pull the first piston 9 upward. This, in turn, moves the guide rod 10 and the second piston 11 upward, facilitating the removal of wastewater from the sampling cylinder 1 for testing. The bottom end of the guide rod 10 is fixed with the second piston 11. The guide rod 10, the second piston 11, the inlet and outlet pipes 3, and the air cylinder 4 are all on the same vertical axis, facilitating the use of the second piston 11 in conjunction with the inlet and outlet pipes 3. A support rod assembly is installed on the sampling cylinder 1 to support the sampling. The sampling cylinder 1 is used to assist in the repositioning of the sampling cylinder 1. A conveying assembly is installed on the air supply pipe 5 to assist in supplying air into the air supply pipe 5. An air pump is used to supply air into the air supply pipe 5 along the conveying assembly. Air enters the air cylinder 4 along the air supply pipe 5. As the air pressure increases, it can squeeze the first piston 9 downwards, forcing the return spring 7 to extend. Simultaneously, the downward movement of the first piston 9 squeezes the guide rod 10 and the second piston 11 downwards, causing the second piston 11 to enter the inlet / outlet pipe 3 and complete the sealing of the inlet / outlet pipe 3. In this way, it can be ensured that the wastewater extracted inside the sampling cylinder 1 is trapped inside the sampling cylinder 1, facilitating... After the wastewater is extracted and transferred, a fixing block 12 is fixed to the outer wall of the sampling cylinder 1. The fixing block 12 has a first threaded hole 13 that is adapted to the support rod assembly. The top of the sampling cylinder 1 is fixedly connected to the air pressure balance pipe 14. The top of the air pressure balance pipe 14 is threadedly connected to the sealing cap 15. When the sampling cylinder 1 is inserted into the wastewater to extract the wastewater, the excess air in the sampling cylinder 1 can be discharged along the air pressure balance pipe 14 to balance the air pressure inside and outside the sampling cylinder 1. After the second piston 11 blocks the inlet and outlet pipes 3, the sealing cap 15 can be used to seal the air pressure balance pipe 14 to ensure that the wastewater extracted in the sampling cylinder 1 will not leak during the transfer.

[0025] Using the strut assembly, the sampling cylinder 1 is moved to the sewage sampling position. The filter screen 2 at the bottom of the sampling cylinder 1 can separate the floating objects on the surface of the sewage, so that when the sampling cylinder 1 samples sewage, the floating objects cannot enter the sampling cylinder 1, which facilitates the subsequent testing of sewage. In addition, the vertical insertion of the sampling cylinder 1 into the sewage can remove sewage from multiple levels at the same time.

[0026] The strut assembly includes multiple struts 19 arranged linearly and connected end to end. One end of each strut 19 is fixed with a stud 20, and the other end of each strut 19 is provided with a second threaded hole 21 that matches the stud 20. The multiple struts 19 are connected end to end, and adjacent struts 19 are threaded together, which makes it convenient to carry and use.

[0027] The delivery assembly includes an air delivery pipe 16, with a connecting cap 17 fixedly sleeved on the outside of one end of the air delivery pipe 16. The connecting cap 17 is threadedly connected to the air delivery pipe 5, and a barometer 18 is installed on the air delivery pipe 16.

[0028] Connect the connecting cap 17 to the air supply pipe 5. Use an air pump to send air to the air supply pipe 16, so that the air is sent to the air supply pipe 5 along the air supply pipe 16. Use the barometer 18 to check the air pressure inside the air supply pipe 16, which helps the staff to perform the air pumping operation better.

[0029] Working principle of this utility model:

[0030] Transport all components of the device to the designated location. Workers will then connect multiple support rods 19 end-to-end according to the site conditions. Adjacent support rods 19 will be threaded together, and the exposed studs 20 will be threaded to the fixing block 12. The connecting cap 17 will be threaded to the air supply pipe 5. Since the area around the wastewater extraction site may be slippery and prone to collapse, to ensure worker safety, the sampling cylinder 1 can be positioned above the wastewater extraction site using the support rod assembly. The sampling cylinder 1 will then be vertically inserted into the wastewater. The filter screen 2 will separate floating debris from the wastewater surface, allowing the sampling cylinder 1 to extract wastewater more effectively. Once the sampling cylinder 1 is inserted to the designated depth into the wastewater... After the total amount of sewage entering the sampling cylinder 1 meets the sampling requirements, air is pumped into the air supply pipe 16 using an air pump. This allows air to enter the air delivery pipe 5 along the air supply pipe 16, and then enter the air cylinder 4 along the air delivery pipe 5. The increased air pressure inside the air cylinder 4 forces the return spring 7 to extend and the first piston 9 to move downward. The first piston 9 pushes the guide rod 10 and the second piston 11 downward, causing the second piston 11 to insert into the inlet and outlet pipe 3 and block the inlet and outlet pipe 3. Then, the sampling cylinder 1 can be removed from the sewage with the help of the support rod assembly. Subsequently, the sealing cap 15 is screwed onto the air pressure balance pipe 14, so that the sealing cap 15 blocks the air pressure balance pipe 14. At this time, the sewage in the sampling cylinder 1 will not leak.

[0031] Unscrew the connecting cap 17 from the air supply pipe 5. Then, separate the support rod assembly from the fixing block 12 and disassemble the multiple support rods 19 in an orderly manner. The sewage in the sampling cylinder 1 can then be transferred to the laboratory. Once in the laboratory, unscrew the sealing cap 15 and open the exhaust valve on the exhaust pipe 6 to release the air in the air cylinder 4. This causes the return spring 7 to contract and move the first piston 9 upward, thereby pulling the second piston 11 away from the inlet / outlet pipe 3. In this way, the sewage extracted from the sampling cylinder 1 can be discharged for testing. If the elastic force provided by the return spring 7 is insufficient to pull the second piston 11 away from the inlet / outlet pipe 3, the air in the air cylinder 4 can be extracted by an air pump to reduce the air pressure inside the air cylinder 4, which helps the return spring 7 pull the first piston 9 upward, thereby achieving the purpose of releasing the sewage in the sampling cylinder 1.

[0032] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A wastewater testing extraction device, comprising a sampling cylinder (1), characterized in that: A filter screen (2) is fixedly sleeved on the outer side of the bottom of the sampling cylinder (1), and an inlet / outlet pipe (3) is fixedly connected to the bottom end of the sampling cylinder (1). The inlet / outlet pipe (3) is located inside the filter screen (2). An air cylinder (4) is fixedly fixed to the top of the sampling cylinder (1). An air supply pipe (5) is fixedly connected to the air cylinder (4). A one-way valve is installed on the air supply pipe (5), and an exhaust pipe (6) is fixedly connected to the air supply pipe (5). An exhaust valve is installed on the exhaust pipe (6). A return spring (7) is fixedly fixed to the inner side of the top of the air cylinder (4). 7) has a carrier plate (8) fixed at the bottom. A first piston (9) is fixed at the bottom of the carrier plate (8). The first piston (9) slides with the inner wall of the air cylinder (4). A guide rod (10) is fixed at the bottom of the first piston (9). A second piston (11) is fixed at the bottom of the guide rod (10). A support rod assembly is installed on the sampling cylinder (1). The support rod assembly is used to support the sampling cylinder (1) and assist the sampling cylinder (1) in positional transfer. A conveying assembly is installed on the air delivery pipe (5). The conveying assembly is used to assist in delivering air into the air delivery pipe (5).

2. The extraction device for wastewater detection according to claim 1, characterized in that: The guide rod (10), the second piston (11), the inlet and outlet pipes (3), and the air cylinder (4) are all on the same vertical axis.

3. The extraction device for wastewater detection according to claim 1, characterized in that: The outer wall of the sampling tube (1) is fixed with a fixing block (12), and the fixing block (12) has a first threaded hole (13) adapted to the support rod assembly.

4. The extraction device for wastewater detection according to claim 3, characterized in that: The strut assembly includes several struts (19), which are arranged linearly and connected end to end. One end of each strut (19) is fixed with a stud (20), and the other end of each strut (19) is provided with a second threaded hole (21) that is compatible with the stud (20).

5. The extraction device for wastewater detection according to claim 1, characterized in that: The top of the sampling tube (1) is fixedly connected to a pressure balance tube (14), and the top end of the pressure balance tube (14) is threadedly connected to a sealing cap (15).

6. The extraction device for wastewater detection according to claim 1, characterized in that: The delivery assembly includes an air delivery pipe (16), and a connecting cap (17) is fixedly sleeved on the outside of one end of the air delivery pipe (16). The connecting cap (17) is threadedly connected to the air delivery pipe (5).

7. The extraction device for wastewater detection according to claim 6, characterized in that: A barometer (18) is installed on the gas pipeline (16).

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