A sewage mixing sampler

Abstract

The present invention relates to a sewage mixing sampler, which effectively solves the problem that mechanical equipment cannot take samples at regular intervals according to time intervals and flow changes; the technical solution thereof is to include a horizontal support rod, a first sleeve being sleeved on the left end of the support rod, and the first sleeve being able to rotate intermittently; two vertical rods are evenly distributed on the first sleeve, and sampling components are fixed at the ends of the vertical rods, and a first guide groove corresponding to the sampling component is provided on the vertical rod, and a collecting box is provided on the right side of the support rod, and a second guide groove connecting the first guide groove and the collecting box is provided on the collecting box; the sampling component includes a support seat that can move up and down along the vertical rod, a vertical cylindrical barrel is fixed on the support seat, a first through groove is completely passed through the cylindrical barrel from front to back, an outer cylinder body is sleeved on the outside of the cylindrical barrel, a second through groove is completely passed through the outer cylinder body from front to back, the first through groove can correspond to the second through groove, and the outer cylinder body can rotate and reset. The present invention can take samples at regular intervals, and the sampling amount will adapt according to the size of the flow.

Description

Technical Field

[0001] The invention relates to the technical field of water body sampling, in particular to a sewage mixing sampler. Background Art

[0002] There are many ways and methods of water sampling, which can be generally divided into two categories: instantaneous sampling and mixed sampling.

[0003] Instantaneous sampling: For water bodies with continuous and stable production processes and relatively stable wastewater volume and water quality, instantaneous samples are more representative. When the components and content of water bodies change over time and space, instantaneous samples should be collected at intervals and multiple points for analysis to understand the changing patterns of water quality. For example, patent documents such as CN209513345U, a hybrid sewage sampling device, CN206177640U, a sewage sampler for environmental monitoring, and CN108507836B, a water sampler for multiple sampling points at a time, all use multi-point instantaneous sampling.

[0004] Mixed water samples: The discharge volume of industrial wastewater and the concentration of pollutants often fluctuate greatly over time. In order to make the monitoring results representative, it is necessary to increase the sampling and measurement frequency, but this will inevitably increase the workload. At this time, the better way is to collect average mixed water samples or average proportion mixed water samples.

[0005] Average mixed water sample: refers to the mixing of equal amounts of wastewater at equal intervals. If the wastewater discharge and flow rate are relatively constant, equal amounts of water samples are collected at equal intervals over a 24-hour period and mixed to form the average water sample.

[0006] Average proportion mixed water sampling: This refers to sampling times that are proportional to the flow rate of the sampled water. If the wastewater flow rate varies, samples are taken over the same timeframe, with more samples taken when the flow rate is high and fewer samples taken when the flow rate is low. Typically, samples are taken throughout the day and night, and then evenly mixed.

[0007] For mixed water samples, because the flow rate of the water body needs to be detected, existing equipment generally requires the use of a flow meter and a water pump for sampling. For example, patent document CN108709771A, a continuous water sampler and monitoring method for agricultural non-point source pollution monitoring, requires the flow meter and water pump to be linked through a specific algorithm, which is costly to develop, purchase, and maintain. At the same time, this equipment is continuous sampling. When sampling industrial wastewater, continuous sampling is not required. Generally, samples are taken at intervals of one to two hours and then mixed. This can meet sampling requirements and simplify the workload.

[0008] Another patent document CN107764593A discloses a continuous mixed water sample collection device and a water sample collection method thereof, which adopts a method similar to a waterwheel for sampling. Although it can achieve changes in sampling frequency according to flow rate, its sampling is also in a continuous state, and the number of samples is large, which cannot meet the sampling needs of equal intervals over a long period of time.

[0009] In summary, although current electrical equipment can also achieve sampling according to flow rate, it is costly and has complex functions. Traditional mechanical equipment cannot sample within a specified time, at time intervals, and according to flow rate changes, and cannot meet the needs of industrial wastewater sampling. Summary of the Invention

[0010] In view of the above situation, in order to solve the problems existing in the prior art, the purpose of the present invention is to provide a sewage mixing sampler, which can effectively solve the problem that mechanical equipment cannot take samples regularly according to time intervals and flow changes.

[0011] The technical solution includes a horizontal support rod, the left end of which is sleeved with a first sleeve, which can rotate intermittently; two vertical rods are evenly distributed on the first sleeve, the ends of which are fixed with sampling assemblies, and the vertical rods are provided with first guide grooves corresponding to the sampling assemblies; a collection box is provided on the right side of the support rod, and a second guide groove connecting the first guide groove and the collection box is provided on the collection box;

[0012] The sampling assembly includes a support base that can move up and down along the vertical rod, a vertical cylindrical barrel fixed on the support base, a first through-slot completely passing through the cylindrical barrel from front to back, an outer cylinder body is mounted on the outer surface of the cylindrical barrel, a second through-slot completely passing through the outer cylinder body from front to back, the first through-slot can correspond to the second through-slot, and the outer cylinder body can rotate and reset;

[0013] A second sleeve is mounted on the support rod, and ropes are connected to the second sleeve and the side wall of the outer cylinder of each sampling assembly. After the second sleeve rotates, the two ropes are tightened, causing the outer cylinders in the two sampling assemblies to rotate synchronously, and the first through slot and the second through slot to be misaligned, and then the second sleeve rotates half a circle.

[0014] A water baffle is installed in the sampling water area downstream of the sampling assembly, with a gap between the lower end of the water baffle and the bottom of the sampling water area. A plurality of supporting legs are fixed to the lower end of the water baffle, and the supporting legs are inserted into the bottom of the sampling water area.

[0015] A limit pin is installed on the sleeve, and two positioning grooves corresponding to the limit pin are evenly distributed on the support rod. When the limit pin is placed in the positioning groove, the vertical rod is in a vertical state.

[0016] The cylindrical tube is provided with a first through hole at one end facing the support rod, and the outer tube is provided with a second through hole at one end facing the support rod. When the first through slot corresponds to the second through slot, the first through hole corresponds to the second through hole.

[0017] The support seat is sleeved on the support rod, a clamping bolt is provided on the support seat, a ring is fixed on the support seat, the middle part of the rope is reversed through the ring, a box body is sleeved on the middle part of the rope, the rope passes through the box body, and a clamping bolt is provided on the box body.

[0018] The advantages of the present invention are: 1. It can take samples at specified time intervals, and the sampling volume each time will adapt to the flow rate; 2. Sampling can be completed without relying on pumps and flow meters, thus avoiding the corrosion of pumps and other equipment by sewage. It does not require the support of algorithms and complex programs, and the equipment is simple, low-cost, easy to maintain, and easy to use. 3. Through the coordination of the cylindrical barrel and the outer cylinder, the relationship between the flow rate and the liquid level height is cleverly utilized, and the positive correlation between the sampling volume and the flow rate is mechanically realized. 4. Through the cooperation of the two sampling components, continuous operation, automatic sampling and discharge of samples are achieved. 5. The sampling operation is convenient, and the entire sampling process can be completed by controlling the interval rotation of the motor or by hand-cranking. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is an overall schematic diagram of the present invention.

[0020] Figure 2 It is a left view of the present invention.

[0021] Figure 3 It is a three-dimensional schematic diagram of the sampling component of the present invention.

[0022] Figure 4 Schematic diagram of the explosion of the sampling assembly of the present invention.

[0023] Figure 5 For the present invention Figure 1 A partial enlarged cross-sectional view at point A in FIG.

[0024] Figure 6 For the present invention Figure 1 A partial enlarged view of point B in the middle. Implementation Method

[0025] The specific embodiments of the present invention are further described in detail below with reference to the accompanying drawings.

[0026] Depend on Figures 1 to 5The present invention includes a horizontal support rod 1, a first sleeve 2 is sleeved on the left end of the support rod 1, and the first sleeve 2 can rotate intermittently; two vertical rods 3 are evenly distributed on the first sleeve 2, and a sampling assembly 4 is fixed at the end of the vertical rod 3. A first guide groove 5 corresponding to the sampling assembly 4 is provided on the vertical rod 3, and a collection box is provided on the right side of the support rod 1. The collection box is provided with a second guide groove 6 connecting the first guide groove 5 and the collection box;

[0027] The sampling assembly 4 includes a support base 401 that can move up and down along the vertical rod 3. A vertical cylindrical barrel 402 is fixed to the support base 401. A first through-slot 403 completely penetrates the cylindrical barrel 402 from front to back. An outer cylinder body 404 is mounted on the outer surface of the cylindrical barrel 402. A second through-slot 405 completely penetrates the outer cylinder body 404 from front to back. The first through-slot 403 can correspond to the second through-slot 405. The outer cylinder body 404 can rotate and reset.

[0028] The support rod 1 is provided with a second sleeve 7, and a rope 8 is connected to the side wall of the second sleeve 7 and the outer cylinder 404 of each sampling assembly 4. After the second sleeve 7 rotates, the two ropes 8 are tightened, causing the outer cylinders 404 in the two sampling assemblies 4 to rotate synchronously, and the first through slot 403 and the second through slot 405 to be misaligned, and then the second sleeve 7 rotates half a circle.

[0029] In order to make the change of water level more obvious as the water flow rate changes, a water baffle 11 is installed in the sampling water area downstream of the sampling component 4. The lower end of the water baffle 11 is spaced from the bottom of the sampling water area, and a plurality of supporting legs are fixed to the lower end of the water baffle 11, which are inserted into the bottom of the sampling water area.

[0030] In order to limit and position the rotation of the sleeve, a limit pin 9 is installed on the sleeve, and two positioning grooves 10 corresponding to the limit pin 9 are evenly distributed on the support rod 1. When the limit pin 9 is placed in the positioning groove 10, the vertical rod 3 is in a vertical state.

[0031] In order to fully pour out the water in the cylindrical tube 402, the cylindrical tube 402 is provided with a first through hole 406 at one end facing the support rod 1, and the outer cylinder 404 is provided with a second through hole 407 at one end facing the support rod 1. When the first through groove 403 corresponds to the second through groove 405, the first through hole 406 corresponds to the second through hole 407.

[0032] In order to be able to adjust the height of the sampling component 4, the support seat 401 is mounted on the support rod 1, a tightening bolt is provided on the support seat 401, a ring 408 is fixed on the support seat 401, the middle part of the rope 8 is reversed through the ring 408, the middle part of the rope 8 is mounted with a box body, the rope 8 passes through the box body, and a tightening bolt is provided on the box body.

[0033] In order to realize the rotation and reset of the outer cylinder 404 , a compression spring 409 is connected between the outer cylinder 404 and the cylindrical tube 402 .

[0034] In order to realize the rotation of the second sleeve 7, the second sleeve 7 is rotated by a motor driven by the motor, and the motor is controlled by the controller.

[0035] In order to realize the rotation of the second sleeve 7, a plurality of handles are evenly distributed on the outer edge surface of the second sleeve 7.

[0036] In order to ensure that the outer cylinder 404 is stably mounted on the outside of the cylindrical cylinder 402, an annular protrusion is provided on the inner wall of the outer cylinder 404, and an annular groove cooperating with the annular protrusion is provided on the outer wall of the cylindrical cylinder 402; a layer of sealing gasket is provided on the inner wall of the outer cylinder 404.

[0037] When the present invention is used, the horizontal support rod 1 of the present invention is first fixed, and the sampling assembly 4 at the lower end of the vertical rod 3 is placed in the sampling water area, generally a canal or a drainage pipe. The sampling assembly 4 in this device is set to two symmetrical upper and lower parts. As the rotation occurs, the positions of the two sampling assemblies 4 can be interchanged.

[0038] In order to make the sampling assembly 4 more sensitive to changes in water flow rate and to facilitate sampling, a slight modification can be made to the drainage channel through pipes and other equipment, that is, a water baffle 11 is set on the downstream side of the device, fixed in the sampling water area, and a gap is left between the lower end of the water baffle 11 and the bottom of the sampling water area, through which the water flow can flow downstream. After such a setting, when the flow rate of the drainage source increases, the drainage volume increases, and the water level will rise rapidly under the action of the water baffle 11. The device is designed to sample according to the height of the water level, thus making sampling more sensitive.

[0039] Generally, if the water retaining plate 11 is not provided, the water level will also increase when the flow rate of the sampling water area increases, but the change may not be obvious enough. The water retaining plate 11 can amplify the change.

[0040] After the sampling component 4 is placed in the sampling water area, the first through groove 403 of the sampling component 4 will face the water flow. At the same time, in the initial state, the first through groove 403 corresponds to the second through groove 405, so the water flow will directly pass through the cylindrical barrel 402, that is, the water in the cylindrical barrel 402 is in a state of continuous flow. At the same time, since the cylindrical barrel 402 is relatively high and the first through groove 403 and the second through groove 405 are in a vertical state, the water level in the cylindrical barrel 402 is now consistent with the water level in the sampling water area and can change dynamically in real time.

[0041] At the same time, due to the design of the mounting seat, the height of the mounting seat can be adjusted to adapt to the water depth range of the sampling water area; when adjusting the height of the mounting seat, the length of the rope 8 also needs to be adjusted to keep the rope 8 always in a pre-tightened state.

[0042] When sampling is required, the motor or manual operation drives the second sleeve 7 to rotate, which first pulls the rope 8. After the rope 8 is tightened, the end of the rope 8 is connected to the outer cylinder 404 and is wrapped around the outer cylinder 404 to a certain length. At this time, the rope 8 pulls the outer cylinder 404 in the sampling assembly 4 to rotate. At this time, the vertical rod 3 is temporarily stopped by the limit pin 9, that is, the cylindrical barrel 402 is restricted by the mounting seat and the vertical rod 3 and does not rotate. Thus, the outer cylinder 404 rotates relative to the cylindrical barrel 402, causing the first through-slot 403 and the second through-slot 405 to be misaligned. That is, the outer cylinder 404 blocks the first through-slot 403 on the cylindrical barrel 402, retaining the water sample in the cylindrical barrel 402.

[0043] And because the entire rotation process is relatively fast, the water sample is completely sealed inside when blocking, and the water level in the cylindrical barrel 402 will remain at the same height as the external sampling water area. This height is positively correlated with the flow rate, so the amount of water sample taken out at this time is positively correlated with the flow rate at that time.

[0044] Then the outer cylinder 404 rotates to the maximum extent, and the rope 8 can no longer be pulled. After that, as the second sleeve 7 continues to rotate, the two ropes 8 will drive the entire vertical rod 3 and the sampling component 4 at the end of the vertical rod 3 to rotate. After the vertical rod 3 rotates half a circle, it stops rotating, and the positions of the two sampling components 4 are interchanged.

[0045] In order to avoid the second sleeve 7 from driving the first sleeve 2 through the rope 8 with great effort after the rope 8 is tightened, an arc-shaped groove can be opened on the right end face of the first sleeve 2, and a lever placed in the arc-shaped groove can be provided on the second sleeve 7 to cooperate with the pre-tightening action of the rope 87, thereby assisting the second sleeve 7 in driving the first sleeve 2 to rotate.

[0046] When the vertical rod 3 stops rotating, the motor or manual operation no longer drives the second sleeve 7, and the outer cylinder 404 is reset, which in turn pulls the rope 8 to reset the sampling assembly 4 to its initial state.

[0047] At this point, the water sample in the upper sampling assembly 4 will flow out from the corresponding positions of the first through-groove 403 and the second through-groove 405. Simultaneously, since the first through-hole 406 and the second through-hole 407 also correspond, the water sample can also flow out from the first through-hole 406 and the second through-hole 407 at the bottom, ensuring the complete release of the water sample without any residue. The outflowing water sample flows into the collection box under the guidance of the first guide groove 5 and the second guide groove 6, completing the collection of the water sample. Simultaneously, the sampling assembly 4 at the bottom will continue to repeat the above process.

[0048] In summary, through rotation, the cylindrical tube 402 in the sampling component 4 will first be instantly sealed in all directions, so that the water sample will be trapped inside the sampling component 4. Then, after overcoming the resistance of the limit pin 9, the entire device will continue to rotate half a circle, realizing the interchange of the positions of the two sampling components 4 and the automatic discharge of the water sample.

[0049] The controller can be set to rotate the entire device as needed to achieve regular sampling intervals, such as every hour for 24 hours of continuous operation. Alternatively, based on factory production conditions, sampling can be performed every hour during the day and every two hours at night. Ultimately, the mixed sample is as close to the actual emission situation as possible.

[0050] In this device, the first through groove 403 and the second through groove 405 are in a vertical state and consistent with the flow direction of the water. Therefore, the water flows continuously inside the cylindrical tube 402 of the sampling component 4 without any residue, ensuring that sampling can be carried out at any time; in addition, the water level in the cylindrical tube 402 can be kept consistent with the height of the sampling water area outside, and the height of the water level is positively correlated with the flow rate and flow velocity of the water, realizing real-time dynamic changes in the flow rate in the sampling component 4.

[0051] If quantitative sampling is required, the cylindrical tube 402 in the sampling assembly 4 can be completely immersed in the water to achieve quantitative sampling, thereby meeting various needs.

[0052] This device realizes the real-time change of sampling volume with flow rate in a mechanized manner. At the same time, through the rotation action, it can first quickly block the sampling component 4 to ensure the accuracy of sampling. Then, through the alternation of the two sampling components 4, automatic continuous sampling is realized. The overall structure is simple, the sampling is transparent, the maintenance is convenient, the cost is low, and the manufacturing is easy. It meets the demand for regular sampling according to flow changes and fills the gap in mixed sampling equipment.

Claims

1. A sewage mixing sampler, comprising a transverse support rod, characterized in that: The left end of the support rod is sleeved with a first sleeve, which can rotate intermittently; two vertical rods are evenly distributed on the first sleeve, and a sampling assembly is fixed at the end of the vertical rod. A first guide groove corresponding to the sampling assembly is provided on the vertical rod. A collection box is provided on the right side of the support rod, and a second guide groove connecting the first guide groove and the collection box is provided on the collection box; The sampling assembly includes a support base that can move up and down along the vertical rod, a vertical cylindrical barrel fixed on the support base, a first through-slot completely passing through the cylindrical barrel from front to back, an outer cylinder body is mounted on the outer surface of the cylindrical barrel, a second through-slot completely passing through the outer cylinder body from front to back, the first through-slot can correspond to the second through-slot, and the outer cylinder body can rotate and reset; The support rod is provided with a second sleeve, and the second sleeve and the side wall of the outer cylinder of each sampling assembly are connected with a rope. When the second sleeve rotates, the two ropes are tightened, causing the outer cylinders of the two sampling assemblies to rotate synchronously, and the first through slot is misaligned with the second through slot, and then the second sleeve rotates half a circle; The cylindrical tube is provided with a first through hole at one end facing the support rod, and the outer tube is provided with a second through hole at one end facing the support rod. When the first through slot corresponds to the second through slot, the first through hole corresponds to the second through hole.

2. A sewage mixed sampler according to claim 1, characterized in that: A water baffle is installed in the sampling water area downstream of the sampling assembly, with a gap between the lower end of the water baffle and the bottom of the sampling water area. A plurality of supporting legs are fixed to the lower end of the water baffle, and the supporting legs are inserted into the bottom of the sampling water area.

3. A sewage mixed sampler according to claim 1, characterized in that: A limit pin is installed on the sleeve, and two positioning grooves corresponding to the limit pin are evenly distributed on the support rod. When the limit pin is placed in the positioning groove, the vertical rod is in a vertical state.

4. A sewage mixed sampler according to claim 1, characterized in that: The support seat is sleeved on the support rod, a clamping bolt is provided on the support seat, a ring is fixed on the support seat, the middle part of the rope is reversed through the ring, a box body is sleeved on the middle part of the rope, the rope passes through the box body, and a clamping bolt is provided on the box body.

5. A sewage mixed sampler according to claim 1, characterized in that: A compression spring is connected between the outer cylinder and the cylindrical cylinder.

6. A sewage mixed sampler according to claim 1, characterized in that: The second sleeve is driven to rotate by a motor, and the motor is controlled by a controller.

7. A sewage mixed sampler according to claim 1, characterized in that: A plurality of handles are evenly distributed on the outer edge surface of the second sleeve.

8. The sewage mixed sampler according to claim 1, characterized in that: An annular protrusion is provided on the inner wall side of the outer cylinder, and an annular groove matching the annular protrusion is provided on the outer wall of the cylindrical cylinder; a layer of sealing gasket is provided on the inner wall of the cylinder.

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