A stirring pretreatment device

Abstract

The present invention relates to a stirring pretreatment device, comprising a stirring pretreatment seat body, the stirring pretreatment seat body is hollow, a water inlet is arranged on one side of the top, a water outlet is arranged on the other side, a water sampling pipe is installed near the water outlet, the water inlet end of the water sampling pipe extends to the inside of the stirring pretreatment seat body, the position is close to the bottom end of the stirring pretreatment seat body, and the water outlet end is located outside the stirring pretreatment seat body; a motor is also installed on the stirring pretreatment seat body, the motor shaft is connected to a stirring shaft, the end of the stirring shaft not connected to the motor shaft extends into the stirring pretreatment seat body, and a stirring blade is installed, and the stirring blade is located below the water inlet end of the water sampling pipe: a separator is arranged in the stirring pretreatment device, and the separator is formed in the stirring pretreatment device from the top to the blade, so that a water inlet area and a water outlet area are formed on both sides of the separator, the water inlet end of the water sampling pipe is located in the water outlet area, the water inlet is directly connected to the water inlet area, and the water outlet is directly connected to the water outlet area. The device is not easy to block the sampling pipeline.

Description

Technical Field

[0001] The invention relates to the field of water quality online monitoring instrument devices, and in particular to a stirring pretreatment device. Background Art

[0002] With the development of science and technology, water quality testing technology has realized online water quality monitoring. Online water quality monitoring must first collect water samples to be tested. The current water sample pretreatment system filters the water samples. Generally, a multi-stage filtration system is used to inject samples from the water inlet and discharge the remaining water from the water outlet, and the system is in a static state for a long time. In the process of collecting water samples to be tested, this online water quality monitoring instrument has the following technical problems:

[0003] 1. The water sample contains large insoluble particles, silt and other solid materials, which block the instrument sampling pipeline and cause damage to key components such as the solenoid valve group on the instrument.

[0004] 2. Solid particles in water samples are also pollutants, and will result in inaccurate data when tested after being filtered.

[0005] 3. After the sediment is deposited during pretreatment, it is difficult to clean.

[0006] 4. The water flow state cannot be observed, the sediment situation is unclear, and the pretreatment is prone to failure.

[0007] The above problems directly affect the normal operation of water quality monitoring instruments and lead to abnormal measurement results or failure to operate. People have been studying how to solve them. Summary of the invention

[0008] The object of the present invention is to provide a stirring pretreatment device to solve at least one of the above-mentioned technical problems.

[0009] The technical solution of the present application is: a stirring pretreatment device, including a stirring pretreatment seat body, the stirring pretreatment seat body is hollow, a water inlet is arranged on one side of the top, and a water outlet is arranged on the other side, a water sampling pipe is installed on the stirring pretreatment seat body near the water outlet, the water inlet end of the water sampling pipe extends to the interior of the stirring pretreatment seat body, and is located near the bottom end of the stirring pretreatment seat body, and the water outlet end of the water sampling pipe is located outside the stirring pretreatment seat body; a motor is also installed on the stirring pretreatment seat body, and the motor of the motor The shaft is connected to a stirring shaft, and the end of the stirring shaft not connected to the motor shaft extends into the stirring pretreatment seat and is equipped with a stirring knife, which is located below the water inlet end of the water sampling pipe: a partition is arranged in the stirring pretreatment device, and the partition extends from the top to the stirring knife inside the stirring pretreatment device, so that a water inlet area and a water outlet area are formed on both sides of the partition, the water inlet end of the water sampling pipe is located in the water outlet area, the water inlet is directly connected to the water inlet area, and the water outlet is directly connected to the water outlet area.

[0010] Preferably, a groove is provided at the bottom end of the stirring pretreatment seat body opposite to the stirring blade, and the diameter of the opening position of the groove is larger than the diameter of a circle formed by the rotation of the stirring blade.

[0011] Preferably, the groove is in the shape of a truncated cone with a bottom diameter smaller than a top diameter.

[0012] Preferably, the middle position of the stirring blade is horizontal and fixed on the stirring shaft, and the positions on both sides are inclined, and the height of the edge position is lower than the height of the middle position.

[0013] Preferably, the end of the stirring shaft that is not connected to the motor shaft passes through the separator and extends into the stirring pretreatment seat body.

[0014] Preferably, a rotary sealing cover and a bearing are sequentially installed at the bottom end of the separator from bottom to top, a rotary sealing plug 8 is provided between the rotary sealing cover and the bearing, and the rotary sealing cover and the stirring shaft are sealed via a sealing ring.

[0015] Preferably, the water inlet end of the water sampling pipe of the sampling tube is an inclined surface; a filter is fixed in the stirring pretreatment seat body, the part of the water sampling pipe located in the stirring pretreatment seat body is located in the filter, and the mesh diameter of the filter is the same as the inner diameter of the sampling tube.

[0016] Preferably, the stirring pretreatment seat body is partially made of transparent material.

[0017] Preferably, the stirring pretreatment seat body comprises a stirring pretreatment seat and a stirring pretreatment bottom cover, and the stirring pretreatment bottom cover is sealed and detachably connected to the stirring pretreatment seat.

[0018] Preferably, in a working state, the stirring blade rotates in the opposite direction to the water flow direction.

[0019] The stirring pretreatment device provided by the present invention has a water flow direction referenced to Figure 2 In the direction of the middle arrow, water flows in through the water inlet 101, and the stirring blade 4 begins to reverse, breaking up the large particles in the water sample. During the stirring process, the broken particles are not easy to settle and flow with the water flow, thus becoming a suitable water sample required by the water quality online analyzer. Then part of the water sample flows out from 102, and a small part passes through the filter 10 and then enters the sampling tube 13 to supply the water quality online analyzer.

[0020] The above stirring pretreatment device has the following advantages:

[0021] 1. Since the large insoluble particles are broken up, it is not easy to settle with solid materials such as silt under the action of stirring, so it is not easy to block the sampling pipeline, and the key components such as the solenoid valve group on the instrument are not easy to be damaged, which increases the service life of the instrument;

[0022] 2. Since the large insoluble particles are broken up, they can directly enter the water sampling pipe, making the data collected by water samples more accurate;

[0023] 3. While large particles of insoluble matter are broken up, they are not easy to settle with solid matter such as silt under the action of stirring, but flow away with the water, reducing the difficulty of cleaning the equipment;

[0024] 4. The stirring pretreatment seat is partially made of transparent material, which is convenient for observing the stirring situation and water flow state in the sampler to prevent pretreatment failure.

[0025] 5. During the sampling process, due to the setting of the separator, the water flow moves downward in the water inlet area and upward in the water outlet area. The sampling tube collects the upward flowing water, and a small suction force can be used to transport the water to the online water quality analyzer, thereby reducing the power output of the online water quality analyzer and reducing the requirements for the online water quality analyzer. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is one of the structural schematic diagrams of the stirring pretreatment device of the present invention;

[0027] Figure 2 This is the second structural schematic diagram of the stirring pretreatment device of the present invention;

[0028] Figure 3 It is one of the on-site installation methods and work flow diagrams, where the arrows represent the direction of water flow;

[0029] Figure 4This is the second on-site installation method and workflow diagram, where the arrows represent the direction of water flow;

[0030] In the figure: stirring pretreatment seat 1, bearing 2, stirring shaft 3, stirring blade 4, motor 5, motor fixing plate 6, stirring pretreatment bottom cover 7, rotating sealing plug 8, sealing ring 9, filter 10, screw 11, inverted cone joint 12, water sampling pipe 13, connecting column 14, coupling 15, rotating sealing cover 16, separator 17, groove 18, water inlet 101, water outlet 102, water outlet end 103 of water sampling pipe, water inlet end 104 of water pipe, water quality online analyzer 201, water sample stirring pretreatment device 202, water sampling pump 203, ball valve 204, pipeline 205, water tank 206, water sample to be tested 207, water inlet area a, water outlet area b. DETAILED DESCRIPTION

[0031] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0032] Example 1, the present application provides a stirring pretreatment device, see Figure 1 and Figure 2 , including a stirring pretreatment seat body. In order to facilitate production and cleaning, the stirring pretreatment seat body is generally divided into a stirring pretreatment seat 1 and a stirring pretreatment bottom cover 7 during production. The stirring pretreatment bottom cover is preferably made of a transparent material for easy disassembly, maintenance and cleaning. The stirring pretreatment bottom cover is sealed and detachably connected to the stirring pretreatment seat, generally in a threaded connection manner; the stirring pretreatment seat body is hollow, and a water inlet 101 is provided on one side of the top, and a water outlet 102 is provided on the other side. A water sampling pipe 13 is installed on the stirring pretreatment seat body near the water outlet, and the water inlet end 104 of the water sampling pipe extends to the interior of the stirring pretreatment seat body, and is located near the bottom end of the stirring pretreatment seat body. The water outlet end 103 of the water sampling pipe is located outside the stirring pretreatment seat body; a motor 5 is also installed on the stirring pretreatment seat body, and the motor shaft of the motor is connected to the stirring shaft 3, and the end of the stirring shaft not connected to the motor shaft extends into the stirring pretreatment seat body and is installed with a stirring knife 4, which is located below the water inlet end of the water sampling pipe: a separator 17 is arranged in the stirring pretreatment device, and the separator is inside the stirring pretreatment device from the top to close to the stirring knife, so that a water inlet area a and a water outlet area b are formed on both sides of the separator, and the water inlet end of the water sampling pipe is located in the water outlet area, the water inlet is directly connected to the water inlet area, and the water outlet is directly connected to the water outlet area.

[0033] In this embodiment, the stirring shaft 3 and the motor shaft of the motor 5 are directly connected by a coupling 15, and the coupling 15 is a single diaphragm elastic coupling, which can reduce assembly errors; the motor 5 is fixed on the motor fixing plate 6, and the motor fixing plate 6 and the stirring motor seat 1 are fixed by connecting columns 14 and screws 11, and the water sample tube 13 is fixed on the stirring pretreatment seat 1 using an inverted cone joint 12 to form a closed cavity, and a threaded connection is used to facilitate the adjustment of the insertion length of the sampling tube 13 and the cleaning of the sampling tube 13; wherein, the stirring pretreatment seat body is preferably made of transparent material to facilitate the observation of the stirring condition and water flow state in the sampler to prevent pretreatment failure.

[0034] As a preferred solution, a filter 10 is fixed inside the stirring pretreatment seat, wherein the filter is in the form of a protective net, the portion of the water sampling tube located inside the stirring pretreatment seat is located inside the filter, the mesh diameter of the filter is the same as the inner diameter of the sampling tube, and the filter 10 can be directly glued inside the stirring pretreatment seat 1. The sampling tube 13 is inserted into the bottom of the filter 10 and the bottom of the sampling tube 13 is beveled to prevent the water sample tube from swinging in the stirring pretreatment seat 1 along the direction of the water flow. The size of the filter mesh of the filter 10 is the same as the inner diameter of the sampling tube.

[0035] In order to divide the water inlet and outlet areas equally and protect the agitator shaft, see Figure 1 and Figure 2 , the applicant extends the end of the stirring shaft that is not connected to the motor shaft through the separator into the stirring pretreatment seat body, preferably sealed and connected to the separator, and the specific sealing method is: the bottom end of the separator is sequentially installed with a rotary sealing cover 16 and a bearing 2 from bottom to top, a rotary sealing plug 8 is arranged between the rotary sealing cover and the bearing, and the rotary sealing cover and the stirring shaft are sealed by a sealing ring 9. The sealing ring 9 on the stirring shaft forms a first seal with the rotary sealing cover, and the rotary sealing plug 8 is installed on the stirring shaft. The rotary sealing cover 16 forms a second seal by pressing its other end into the stirring pretreatment seat 1, so that the sealing effect is good. There can also be a spring on the rotary sealing plug 8, so that it can be tightly combined with the stirring shaft 3 and can rotate at high speed. This design of multi-stage stirring shaft rotary seal enables it to resist water pressure and prevent liquid leakage when rotating at high speed.

[0036] The stirring pretreatment device provided by the present invention has a water flow direction referenced to Figure 2 In the direction of the middle arrow, water flows in through the water inlet 101, and the stirring blade 4 begins to reverse, breaking up the large particles in the water sample. During the stirring process, the broken particles are not easy to settle and flow with the water flow, thus becoming a suitable water sample required by the water quality online analyzer. Then part of the water sample flows out from 102, and a small part passes through the filter 10 and then enters the sampling tube 13 to supply the water quality online analyzer.

[0037] The stirring pretreatment device has the following advantages:

[0038] 1. Since the large insoluble particles are broken up, it is not easy to settle with solid materials such as silt under the action of stirring, so it is not easy to block the sampling pipeline, and the key components such as the solenoid valve group on the instrument are not easy to be damaged, which increases the service life of the instrument;

[0039] 2. Since the large insoluble particles are broken up, they can directly enter the water sampling pipe, making the data collected by water samples more accurate;

[0040] 3. While large particles of insoluble matter are broken up, they are not easy to settle with solid matter such as silt under the action of stirring, but flow away with the water, reducing the difficulty of cleaning the equipment;

[0041] 4. The stirring pretreatment seat is partially made of transparent material, which is convenient for observing the stirring situation and water flow state in the sampler to prevent pretreatment failure.

[0042] 5. During the sampling process, due to the setting of the separator, the water flow moves downward in the water inlet area and upward in the water outlet area. The sampling tube collects the upward flowing water, and a small suction force can be used to transport the water to the online water quality analyzer, thereby reducing the power output of the online water quality analyzer and reducing the requirements for the online water quality analyzer.

[0043] Embodiment 2, based on embodiment 1, the applicant also made the following design: Figure 1 and Figure 2 A groove 18 is provided at the bottom end of the stirring pretreatment seat body, facing the stirring blade. The diameter of the opening position of the groove is slightly larger than the diameter of the circle formed by the rotation of the stirring blade. In order to make full use of the space, the shape of the groove is a truncated cone with a bottom diameter smaller than the top diameter. The middle position of the stirring blade is horizontal and fixed on the stirring shaft. The positions on both sides are inclined, and the height of the edge position is lower than the height of the middle position. Generally, the edge position of the stirring blade can be set slightly lower than the opening position of the groove, so that when part of the water passing through the upper layer of the stirring blade leaves the stirring blade, it tilts downward and rebounds through the side wall of the groove to the bottom of the stirring blade in the groove and flows with the water flow. This can increase the passing rate of the water flow through the groove and increase the crushing effect of the particles. When the edge position of the stirring blade is slightly higher than the opening of the groove, when part of the water passing through the upper layer of the stirring blade leaves the stirring blade, it tilts downward and is also partially brought into the groove by the downward flowing water flow. However, when only the edge position of the stirring blade is set flush with the opening position of the groove, the crushing effect is slightly different.

[0044] This structure has the following advantages:

[0045] 1. By setting a truncated cone-shaped groove and setting the opening of the groove slightly larger, in this way, during the stirring process, the water flow below the water inlet area can enter the groove through the side of the stirring blade, and then flow out from the bottom of the water outlet area. In this process, the stirring blade can stir the water flow on both sides and break the large particles of insoluble matter in the water flow, and the breaking effect is good. In addition, the large particles passing through the groove are broken once by the stirring blade during the descent process, and then rise through the groove, and are broken again by the stirring blade, and the breaking effect is good;

[0046] 2. The groove is set in a shape where the upper opening is larger than the bottom, so that the upper and lower ends form an inclined surface. The water capacity at the upper end is larger and the water capacity at the lower end is smaller. When the water flows in the groove, it forms an approximately U-shaped water flow, which is conducive to the entry and exit of water and the breakup of particles.

[0047] 3. The mixing blade is provided with an inclined part which cooperates with the groove to prevent the mixing blade from forming an obstruction plane when rotating at a high speed, which is not conducive to the water flow into the groove. The water flows gradually close to the edge through the inclined part and enters the groove more easily at the edge of the mixing blade.

[0048] 4. In the working state, the rotation direction of the stirring blade is opposite to the direction of water flow, thus forming a reverse impact on the moving particles and accelerating the stirring efficiency.

[0049] There are many ways to install the stirring pretreatment device on site. The following are two preferred ways to install the device on site: Figure 3 ,like Figure 4 As shown, Figure 3 Figure 4 The reference numerals in the figure: water quality online analyzer 201, water sample stirring pretreatment device 202, water sampling pump 203, ball valve 204, pipeline 205, water tank 206, water sample to be tested 207.

[0050] Installation method 1 Figure 3 As shown: the water sampling pump 203 pumps the water sample 207 to be tested into the sampling pipeline, and the water sample stirring pretreatment device 202 adopts the water inlet mode of left-in and right-out, and is installed in series. Multiple water quality online analyzers 201 can share one water sampling pump 203. The water sampling pump 203 is connected to a pressure dividing pipeline equipped with a ball valve 204, which is convenient for controlling the water flow rate in the entire sampling pipeline 205, matching the sampling pressure in the water quality online analyzer 201, and ensuring that the water sample is flowing and the latest during sampling. It can also ensure that after the water sampling pump 203 stops working, a part of the water sample 24 to be tested retained in the stirring pretreatment device 202 is provided to the water quality online analyzer 201 for use. If the series mode is adopted, the water sample in the pipeline 205 will become more and more uniform after passing through multiple water sample stirring pretreatment devices.

[0051] Installation method 2: Figure 4As shown, the same water sampling pump 203 pumps the water sample 207 to be tested into the sampling pipeline. The water sample stirring pretreatment device 202 adopts a left-in and right-out water inlet method and is installed in parallel. Multiple water quality online analyzers 201 can share one water sampling pump 203. The water sampling pump 203 is connected to a pressure dividing pipeline equipped with a ball valve 204 above, which is convenient for controlling the water flow rate in the entire sampling pipeline 205 to match the sampling pressure in the water quality online analyzer 201. This parallel installation method can ensure that the pressure in the pipeline 205 is relatively balanced.

[0052] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. The words "first" and "second" are only used to distinguish the names and are not intended to limit the technical terms. For those skilled in the art, the present invention may have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A stirring pretreatment device, characterized in that: The stirring pretreatment seat body is hollow, a water inlet (101) is arranged on one side of the top, and a water outlet (102) is arranged on the other side. A water sampling pipe (13) is installed on the stirring pretreatment seat body near the water outlet. The water inlet end (104) of the water sampling pipe extends to the interior of the stirring pretreatment seat body and is located near the bottom end of the stirring pretreatment seat body. The water outlet end (103) of the water sampling pipe is located outside the stirring pretreatment seat body. A motor (5) is also mounted on the stirring pretreatment seat, the motor shaft of the motor being connected to a stirring shaft (3), the end of the stirring shaft not connected to the motor shaft extending into the stirring pretreatment seat and being mounted with a stirring blade (4), the stirring blade being located below the water inlet end of the water sampling pipe: A separator (17) is provided in the stirring pretreatment device. The separator is arranged inside the stirring pretreatment device from the top end to the vicinity of the stirring blade, so that a water inlet area (a) and a water outlet area (b) are formed on both sides of the separator. The water inlet end of the water sampling pipe is located in the water outlet area. The water inlet is directly connected to the water inlet area, and the water outlet is directly connected to the water outlet area.

2. The stirring pretreatment device according to claim 1, characterized in that: A groove (18) is provided at the bottom end of the stirring pretreatment seat body, directly opposite to the stirring blade, and the diameter of the opening of the groove is greater than the diameter of a circle formed by the rotation of the stirring blade.

3. The stirring pretreatment device according to claim 2, characterized in that: The groove is in the shape of a truncated cone with a bottom diameter smaller than a top diameter.

4. The stirring pretreatment device according to claim 3, characterized in that: The middle position of the stirring blade is horizontal and fixed on the stirring shaft, and the positions on both sides are inclined, and the height of the edge position is lower than the height of the middle position.

5. The stirring pretreatment device according to claim 1, characterized in that: The end of the stirring shaft that is not connected to the motor shaft extends through the partition into the stirring pretreatment seat body.

6. The stirring pretreatment device according to claim 5, characterized in that: The bottom end of the separator is provided with a rotary sealing cover (16) and a bearing (2) in sequence from bottom to top, a rotary sealing plug (8) is provided between the rotary sealing cover and the bearing, and the rotary sealing cover and the stirring shaft are sealed via a sealing ring (9).

7. The stirring pretreatment device according to claim 1, characterized in that: The water inlet end of the water sampling pipe is an inclined surface; A filter (10) is fixed in the stirring pretreatment seat body, the portion of the water sampling pipe located in the stirring pretreatment seat body is located in the filter, and the mesh opening diameter of the filter is the same as the inner diameter of the sampling pipe.

8. The stirring pretreatment device according to claim 1, characterized in that: The stirring pretreatment seat body is partially made of transparent material.

9. The stirring pretreatment device according to any one of claims 1 to 8, characterized in that: The stirring pretreatment seat body comprises a stirring pretreatment seat (1) and a stirring pretreatment bottom cover (7), wherein the stirring pretreatment bottom cover is sealed and detachably connected to the stirring pretreatment seat.

10. The stirring pretreatment device according to claim 1, characterized in that: In the working state, the rotation direction of the stirring blade is opposite to the water flow direction.

Images