Dosing device for sewage treatment and dosing method thereof

Abstract

The invention discloses a dosing device for sewage treatment and a dosing method thereof.The dosing device comprises a configuration box body and a stock bin arranged on the configuration box body, drugs in the stock bin are conveyed into an instant dissolver through a spiral conveying mechanism to be premixed with clear water, a first plate body is arranged in the instant dissolver, and a plurality of leakage holes are formed in the first plate body in the circumferential direction; a second plate body is arranged in each leakage hole in a swinging manner; a driving part is also arranged in the instant dissolver; the driving piece drives the second plate body to swing so as to open and close the material leaking hole; the swinging of the second plate body is controlled through the driving piece so as to control the opening and closing of each material leaking hole, so that when medicines enter the instant dissolver, the driving piece controls the second plate body to swing to open the material leaking holes, and when no medicines enter the instant dissolver, the driving piece controls the second plate body to close the material leaking holes, and therefore, the amount of water vapor entering the stock bin is effectively reduced.

Description

Technical Field

[0001] The invention relates to the technical field related to sewage treatment, and in particular to a dosing device for sewage treatment and a dosing method thereof. Background Art

[0002] As is known to all, sewage treatment is a key link in ensuring environmental quality and achieving sustainable development. In this process, drugs are added to sewage to purify it and make it meet the discharge standards. However, with the increasingly stringent environmental regulations and the increasing public demand for water quality safety, the traditional sewage treatment method of adding drugs can no longer meet the growing treatment needs.

[0003] Therefore, technological innovation of sewage treatment dosing devices and methods is particularly important. The emergence of three-chamber dosing devices can effectively solve the problems of inaccurate dosing metering, improper dosing timing, and serious waste of drugs. When the three-chamber dosing device is working, the dry powder flocculant enters the instant dissolver from the adjustable spiral silo and is premixed with clean water (the adjustable spiral silo is equipped with a vibrating screen and a crushing device to achieve moisture-proof compaction and automatic feeding of the dry powder flocculant, and uses a photoelectric weighing sensor to achieve precise metering and weighing. The working principle of the photoelectric weighing sensor is usually to install the light source and the photoelectric receiver at both ends of the sensor. When the object passes through the sensor, the object blocks the light emitted by the light source, causing the intensity of the light signal received by the photoelectric receiver to change. The sensor calculates the weight or mass of the object based on the change in this light signal), and then the wetted material enters the preparation tank The mixture is stirred and diluted, and configured according to the required concentration. During the configuration process, the water intake must be relatively stable under the observation of the flow meter to ensure that the configuration concentration meets the requirements; the configured solution enters the storage tank from the configuration tank through the maturation tank, and the liquid level sensor and electric control valve are used to realize automatic water replenishment and medication. That is, when the liquid level in the storage tank is at a high level, the configuration process automatically stops, and the dosing process continues. The drug metering pump uses a variable frequency pump, which can automatically adjust the dosing metering and dispensing concentration according to the PLC control system signal. When the solution drops to the middle liquid level, the dosing process is automatically restarted. Agitators are set in the preparation tank and the maturation tank to allow the flocculant to be fully diluted and matured.

[0004] The deficiency of the prior art is that the adjustable spiral silo and the quick dissolver are always in an interconnected state, so the water vapor in the configuration tank will enter the adjustable spiral silo after passing through the quick dissolver, causing the dry powder flocculant in the silo to regain moisture and become compacted. Even if a vibrating screen and a crushing device are provided in the silo, large pieces of compacted dry powder flocculants are basically crushed into small pieces. When the block-shaped dry powder flocculants enter the spiral conveying section, there is still the problem of re-agglomeration. The block-shaped dry powder flocculants have the risk of clogging the spiral conveying section, and when the block-shaped dry powder flocculants are mixed with clean water, their dissolution rate is slower than that of the powder, which will obviously affect the concentration and configuration efficiency of the liquid preparation. Summary of the invention

[0005] The purpose of the present invention is to provide a dosing device and a dosing method for sewage treatment to solve the technical problems in the related art.

[0006] In order to achieve the above object, the present invention provides the following technical solutions:

[0007] A dosing device for sewage treatment comprises a configuration box and a silo arranged on the configuration box. The medicine in the silo is transported to an instant dissolver through a screw conveying mechanism to be premixed with clean water. The instant dissolver is provided with a first plate body, and a plurality of leakage holes are arranged circumferentially on the first plate body. A second plate body is swingably arranged in each of the leakage holes. The instant dissolver is also provided with a driving member; the driving member drives the second plate body to swing to open and close the leakage hole.

[0008] As mentioned above, a mesh plate is rotatably provided inside the instant dissolver, the first plate body is rotatably provided inside the instant dissolver, a plurality of premixing chambers are provided between the first plate body and the mesh plate, the plurality of premixing chambers correspond one to one with a plurality of leakage holes, the water inlet pipe on the instant dissolver delivers clean water to the stroke of the instant dissolver, and the premixing chamber rotates under the impact of the clean water to mix the medicine with the clean water.

[0009] As mentioned above, the driving member includes a first electromagnet arranged in the instant dissolver and a second electromagnet arranged at the center of the first plate body. The second electromagnet is connected to each second plate body through a first rod body with elastic telescopic function. When the first electromagnet and the second electromagnet attract each other, the leakage hole is in an open state; when there is no magnetic force between the first electromagnet and the second electromagnet, the leakage hole is in a closed state.

[0010] As mentioned above, the water inlet pipe is swingably arranged on the instant dissolver, and a first elastic member is provided at the swinging position of the two. Under the elastic force of the first elastic member, the water inlet pipe tilts the clean water to impact the premixing chamber, and the water inlet pipe swings in the opposite direction based on the power of the screw conveying mechanism to overcome the elastic force of the first elastic member.

[0011] As mentioned above, the mesh plate portion corresponding to the bottom of each premixing chamber is inclined, and the lowest point of the mesh plate is close to the central axis of the instant dissolver. A cavity connected to a plurality of premixing chambers is provided in the instant dissolver, and the bottom of the cavity is inclined, and its lowest point corresponds to the highest point of the mesh plate.

[0012] As mentioned above, a second rod body is rotatably provided in the instant dissolver, a plurality of third rod bodies are sequentially arranged on the circumference of the second rod body, a plurality of fourth rod bodies are fixedly connected to the end of the second rod body close to the water inlet pipe, and the spiral conveying mechanism pushes the plurality of third rod bodies sequentially during the course of conveying the medicines, and the plurality of fourth rod bodies intermittently move the water inlet pipe based on the sequential pushing action of the plurality of third rod bodies.

[0013] As mentioned above, the first electromagnet is divided into several blocks, each of the third rod bodies is provided with a first electromagnet at the end away from the second rod body, and an elastic gasket is provided on the first plate body; during the process in which the second electromagnet is attracted by several first electromagnets in sequence, the second electromagnet drives the middle part of the elastic gasket to arch frequently.

[0014] As mentioned above, a plurality of protrusions are arranged on the second electromagnet, and in the process in which the second electromagnet is attracted by the plurality of first electromagnets in sequence, the plurality of third rods intermittently squeeze the protrusions to make the elastic gasket vibrate.

[0015] As mentioned above, the first rod body includes a main section hinged to the second electromagnet and a sub-section hinged to the second plate body, a second elastic member is provided between the main section and the sub-section, and during the extension stroke of the first rod body, the second elastic member pushes the elastic gasket to arch.

[0016] The present invention also relates to a method for adding chemicals for sewage treatment, wherein the method for adding chemicals to sewage by using the above-mentioned sewage treatment chemical adding device comprises the following steps:

[0017] Step 1: Liquid medicine preparation: the spiral conveying mechanism transports the medicine in the silo to the instant dissolver, the water inlet pipe transports clean water to the instant dissolver for premixing with the incoming medicine, and the premixed liquid medicine enters the preparation box for preparation, maturation and storage in sequence;

[0018] Step 2: Add the liquid medicine. The medicine metering pump will add the stored liquid medicine into the sewage to treat the sewage.

[0019] The beneficial effect of the present invention is that the swing of the second plate is controlled by the driving member to control the opening and closing of each leakage hole. In this way, when medicines enter the instant dissolver, the driving member controls the second plate to swing to open the leakage hole. When no medicines enter the instant dissolver, the driving member controls the second plate to close the leakage hole, thereby effectively reducing the amount of water vapor entering the silo. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0021] Figure 1 A schematic diagram of the three-dimensional structure of a dosing device for sewage treatment in an embodiment provided by the present invention;

[0022] Figure 2 A schematic diagram of the three-dimensional structure of a quick dissolver of a dosing device for sewage treatment in an embodiment provided by the present invention;

[0023] Figure 3 A schematic diagram of the internal structure of a quick dissolver of a dosing device for sewage treatment in an embodiment of the present invention;

[0024] Figure 4 A schematic diagram of the axial cross-sectional structure of a sewage treatment dosing device according to an embodiment of the present invention when the second electromagnet is in a first position;

[0025] Figure 5 for Figure 4 A is an enlarged structural diagram;

[0026] Figure 6 A schematic diagram of the axial cross-sectional structure of a sewage treatment dosing device according to an embodiment of the present invention when the second electromagnet is in the second position;

[0027] Figure 7 for Figure 6 The enlarged structural diagram at B in FIG.

[0028] Figure 8 A schematic diagram of the axial cross-sectional structure of a sewage treatment dosing device according to an embodiment of the present invention when the second electromagnet is in a third position;

[0029] Fig. 9 for Figure 8 The enlarged structural diagram at C in FIG.

[0030] Fig.10 This is a schematic diagram of the radial cross-sectional structure of a premixing chamber of a dosing device for sewage treatment in an embodiment provided by the present invention.

[0031] Description of reference numerals:

[0032] 1. Configuration box; 2. Silo; 3. Screw conveying mechanism; 4. Instant dissolver; 5. First plate; 6. Leakage hole; 7. Second plate; 8. Screen; 9. Premixing chamber; 10. Cavity; 11. First electromagnet; 12. Second electromagnet; 13. First rod; 130. Main section; 131. Sub-section; 132. Second elastic member; 14. Water inlet pipe; 15. Second rod; 16. Third rod; 17. Fourth rod; 18. Fifth rod; 19. Elastic gasket; 20. Bump. DETAILED DESCRIPTION

[0033] In order to enable those skilled in the art to better understand the technical solution of the present invention, Figure 1 To Attachment Fig.10 The present invention is further described in detail.

[0034] An embodiment provided by the present invention relates to a dosing device for sewage treatment, comprising a configuration box 1 and a silo 2 arranged on the configuration box 1, the medicine in the silo 2 is transported to an instant dissolver 4 through a spiral conveying mechanism 3 to be premixed with clean water, the instant dissolver 4 is provided with a first plate 5, a plurality of leakage holes 6 are arranged circumferentially on the first plate 5, each of the leakage holes 6 is swingably provided with a second plate 7, and the instant dissolver 4 is also provided with a driving member; the driving member drives the second plate 7 to swing to open and close the leakage hole 6.

[0035] Specifically, the configuration box 1 is divided into a configuration chamber, a maturation chamber and a liquid storage chamber. The medicine liquid in the configuration chamber enters the maturation chamber by overflow, and the matured medicine liquid in the maturation chamber also enters the liquid storage chamber by overflow. The medicine liquid in the liquid storage chamber is put into the sewage through a medicine discharging metering pump. The medicine is stored in a silo 2. A cover plate is provided on the silo 2 to prevent water vapor in the air from entering the silo 2. A spiral conveying mechanism 3 is provided at the bottom of the silo 2. A medicine inlet and a medicine outlet are provided on the spiral conveying mechanism 3. The medicine in the silo 2 slides from top to bottom to the medicine inlet of the spiral conveying mechanism 3. After being conveyed by the spiral conveying mechanism 3, the medicine falls from the medicine outlet to the instant dissolver 4. The water inlet pipe 14 on the instant dissolver 4 conveys clean water to the instant dissolver 4 to mix with the falling medicine. The medicine and clean water are first premixed in the instant dissolver 4, and the premixed medicine liquid enters the configuration chamber to mix with the clean water in the configuration chamber.

[0036] From the above-mentioned liquid medicine configuration process, it can be seen that the configuration chamber, the quick dissolver 4, the spiral conveying mechanism 3 and the silo 2 are in a connected state. Then, the water vapor generated by the clean water in the configuration chamber and the quick dissolver 4 will enter the silo 2 and contact the medicine during the rising process. In order to reduce the labor intensity of the workers, more medicines are often added at one time on a regular basis (once a month or a quarter). In a longer time interval, the amount of water vapor contacted by the medicine in the silo 2 is also increasing, causing the medicine in the silo 2 to regain moisture and become hardened. In order to deal with the hardening of the medicine affecting the liquid medicine configuration, a device is provided in the silo 2 in the prior art. Vibrating screen and crushing device, but it basically breaks large pieces of compacted dry powder flocculant into small pieces. When the block-shaped dry powder flocculant enters the spiral conveying section, there is still a problem of re-agglomeration due to the extrusion of the spiral conveying blades. The block-shaped medicine has the risk of clogging the spiral conveying section, and the block-shaped medicine falls quickly after entering the instant dissolver 4. Basically, it will be mixed with clean water in the preparation tank. The dissolution rate of the block-shaped medicine is slower than that of the powdered medicine, which will obviously affect the concentration and configuration efficiency of the liquid medicine. Therefore, a mechanism that can cut off the rising of water vapor into the silo 2 is needed to avoid the above-mentioned problems.

[0037] In this embodiment, a first plate body 5 is added to the instant dissolver 4, and the first plate body 5 is arranged between the water inlet pipe 14 and the medicine inlet. The instant dissolver 4 is cylindrical, and the corresponding first plate body 5 is disc-shaped. A plurality of leakage holes 6 are arranged circumferentially on the first plate body 5, that is, the medicine falling from the medicine outlet can continue to fall through the leakage holes 6 and mix with the clean water. In order to avoid the accumulation of medicines on the first plate body 5, the side of the first plate body 5 facing the medicine outlet can be set to a structure with a central upward arch, so that the medicine falling on the first plate body 5 can slide into the leakage hole 6, and each leakage hole 6 is swingably set with a second plate body 7, and the second plate The swing of the second plate body 7 can realize the opening and closing of the corresponding leakage hole 6, that is, a driving member is set to control the swing of the second plate body 7. When the medicine needs to pass through the leakage hole 6, the driving member drives the second plate body 7 to swing to open the leakage hole 6. When the medicine passes through the leakage hole 6, the water vapor rising through the leakage hole 6 will contact the medicine, and it is difficult for the water vapor to enter the silo 2 at this time. When the medicine solution is not needed, the driving member drives the second plate body 7 to swing to close the leakage hole 6. The second plate body 7 and the side wall of the leakage hole 6 are dynamically sealed, and the channel for the rising water vapor is blocked by the second plate body 7, so it is more difficult for the water vapor to contact the medicine at this time.

[0038] The beneficial effect of this embodiment is that the swing of the second plate 7 is controlled by the driving member to control the opening and closing of each leakage hole 6. In this way, when medicine enters the instant dissolver 4, the driving member controls the second plate 7 to swing open the leakage hole 6. When no medicine enters the instant dissolver 4, the driving member controls the second plate 7 to close the leakage hole 6, thereby effectively reducing the amount of water vapor entering the silo 2.

[0039] Preferably, a mesh plate 8 is rotatably provided in the instant dissolver 4, the first plate body 5 is rotatably provided in the instant dissolver 4, a plurality of premixing chambers 9 are provided between the first plate body 5 and the mesh plate 8, the plurality of premixing chambers 9 correspond one-to-one to the plurality of leakage holes 6, the water inlet pipe 14 on the instant dissolver 4 delivers clean water to the stroke of the instant dissolver 4, and the premixing chamber 9 rotates under the impact of the clean water to mix the medicine with the clean water.

[0040] Specifically, the mesh plate 8 is also disc-shaped and is located below the first plate body 5. The water inlet pipe 14 of the instant dissolver 4 is located between the first plate body 5 and the mesh plate 8. The plurality of premixing chambers 9 between the first plate body 5 and the mesh plate 8 are formed by a plurality of partitions that divide the space between the first plate body 5 and the mesh plate 8 in the circumferential direction. Each premixing chamber 9 corresponds to a leakage hole 6, so that the mixing of dispersed medicines and clean water is also carried out separately, and the impact of the water flow can be used to make the premixing chamber 9 rotate, that is, when the water inlet pipe 14 transports clean water into the premixing chamber 9, the clean water impacts the side wall of the premixing chamber 9, so that the premixing chamber 9 is forced to rotate, and the rotating premixing chamber 9 is conducive to the mixing of clean water fish medicines, and the mixed liquid medicine is thrown out from the mesh plate 8, thereby preventing the block-shaped medicines from directly entering the preparation tank.

[0041] Furthermore, the portion of the mesh plate 8 corresponding to the bottom of each premixing cavity 9 is inclined, and the lowest point of the inclination of the mesh plate 8 is close to the central axis of the instant dissolver 4. The instant dissolver 4 is provided with a cavity 10 connected to a plurality of premixing cavities 9, and the bottom of the cavity 10 is inclined, and the lowest point of its inclination corresponds to the highest point of the inclination of the mesh plate 8.

[0042] Specifically, the rotation of the premixing chamber 9 causes the medicine and clean water to mix and produce a centrifugal effect. The first mixed medicine liquid is at the bottom close to the mesh plate 8, and the mixed medicine liquid is in the cavity 10 due to the centrifugal effect. As the amount of clean water entering increases, the mixed medicine liquid is at the bottom, and then based on the centrifugal effect, the mesh plate 8 uses centrifugal force to throw the mixed medicine liquid into the preparation tank. If the mixed medicine liquid contains medicine that has not been dissolved in time, the medicine cannot pass through the mesh plate 8 into the preparation tank, and can move in the premixing chamber 9 due to the centrifugal effect, and then be gradually dissolved.

[0043] Preferably, the driving member includes a first electromagnet 11 arranged in the instant dissolver 4 and a second electromagnet 12 arranged at the center of the first plate body 5. The second electromagnet 12 is connected to each second plate body 7 through a first rod body 13 with elastic telescopic function. When the first electromagnet 11 and the second electromagnet 12 attract each other, the leakage hole 6 is in an open state; when there is no magnetic force between the first electromagnet 11 and the second electromagnet 12, the leakage hole 6 is in a closed state.

[0044] Specifically, the first rod 13 is hinged with the second plate 7, and a torsion spring is provided at the hinge of the two. The first rod 13 is hinged with the second electromagnet 12, and the position of the first electromagnet 11 in the instant dissolver 4 remains unchanged. When the second electromagnet 12 is attracted by the first electromagnet 11, the second electromagnet 12 moves axially toward the first electromagnet 11, and the movement of the second electromagnet 12 drives the first rod 13 connected thereto to move. The other end of the first rod 13 is hinged with the second plate 7, and the other end thereof cannot move upward with it. In this way, the first rod body 13 will gradually tilt, and the torsion spring at the hinge between the first rod body 13 and the second plate body 7 transmits power to the second plate body 7, so that the second plate body 7 swings and opens the corresponding leakage hole 6. On the contrary, when there is no magnetic attraction between the first electromagnet 11 and the second electromagnet 12 (based on the gravity of the second electromagnet 12) or there is a repulsive force, the second electromagnet 12 moves axially downward away from the first electromagnet 11, and the second electromagnet 12 will drive the second plate body 7 to close the corresponding leakage hole 6 through the first rod body 13.

[0045] Preferably, the water inlet pipe 14 is swingably arranged on the instant dissolver 4, and a first elastic member is provided at the swinging position of the two. Under the elastic force of the first elastic member, the water inlet pipe 14 tilts the clean water to impact the premixing chamber 9, and the water inlet pipe 14 swings in the opposite direction based on the power of the screw conveying mechanism 3 to overcome the elastic force of the first elastic member.

[0046] Specifically, the water inlet pipe 14 can swing forward and backward on the instant dissolver 4, so the impact of the clean water on the premixing chamber 9 will cause the premixing chamber 9 to rotate forward and backward (when the clean water impacts the premixing chamber 9 obliquely, it is equivalent to giving a tangential force on the rotation plane of the premixing chamber). In this way, the premixing chamber 9 cycles in the process of forward rotation-forward deceleration-reverse acceleration-reverse-reverse deceleration-forward acceleration-forward rotation. Compared with the rotation in a single direction, this rotation mode will make the clean water fluctuate more strongly and have a better impact effect on the medicine, so as to further improve the premixing effect of the medicine and the clean water. Therefore, in a preferred embodiment, the water inlet pipe 14 and the screw conveying mechanism 3 are connected. The power transmission mechanism is as follows: a second rod 15 is rotatably provided in the instant dissolver 4, a plurality of third rods 16 are sequentially arranged on the circumference of the second rod 15, a plurality of fourth rods 17 are fixedly connected to the end of the second rod 15 close to the water inlet pipe 14, and the spiral conveying mechanism 3 pushes the plurality of third rods 16 in sequence during the medicine conveying stroke, and the plurality of fourth rods 17 intermittently moves the water inlet pipe 14 based on the sequential pushing action of the plurality of third rods 16, that is, the spiral blades of the spiral conveying mechanism 3 will give the medicine an axial thrust during the rotation process, and the plurality of third rods 16 are arranged circumferentially on the second rod 15 by utilizing the thrust of the spiral blades. When the third rod 16 is on the moving path of the spiral blade, the thrust of the spiral blade pushes it to move, and when the previous third rod 16 is about to leave the spiral blade, the next third rod 16 enters the moving path of the spiral blade, so that during the rotation of the spiral blade, a plurality of third rods 16 can be pushed by the spiral blade in sequence (when the spiral blade pushes the third rod to move, the two are in contact, and the rotation axis of the third rod and the rotation axis of the spiral blade are perpendicular to each other in space, so the third rod can clean the medicine adhered to the surface of the spiral blade), then the second rod 15 can rotate continuously, and the rotation of the second rod 15 brings The fourth rod 17 is moved to intermittently move the water inlet pipe 14. After being moved by the fourth rod 17, when the fourth rod 17 is out of contact with the water inlet pipe 14, the water inlet pipe 14 will move in the opposite direction and reset under the action of the rebound force of the first elastic member, so that the water inlet pipe 14 will swing back and forth on the instant dissolver 4, so that the premixing chamber 9 rotates forward and backward by the impact of the water flow, wherein the fifth rod 18 is rotatably arranged on the outer wall of the instant dissolver 4, and the fourth rod 17 moves the fifth rod 18 during the rotation process, and the fifth rod 18 swings and moves the water inlet pipe 14, so that the length of the fourth rod 17 can be set shorter accordingly to reduce the occupied space.

[0047] Furthermore, the first electromagnet 11 is divided into several blocks, and each end of the third rod body 16 away from the second rod body 15 is provided with a first electromagnet 11, and the first plate body 5 is provided with an elastic gasket 19; during the process in which the second electromagnet 12 is attracted by several first electromagnets 11 in sequence, the second electromagnet 12 drives the middle part of the elastic gasket 19 to arch frequently.

[0048] Specifically, since there are multiple third rods 16 on the second rod 15, no matter where the second rod 15 stops, there is a third rod 16 closest to the second electromagnet 12. Therefore, the second electromagnet 12 will always be subjected to the magnetic attraction of one of the first electromagnets 11, so that its position is the position where the second plate 7 opens the leakage hole 6. For example, the magnetic force of the first electromagnet 11 on the second electromagnet 12 will cause the second electromagnet 12 to have three positions: in the first position, the first electromagnet 11 does not generate magnetic attraction to the second electromagnet 12, and due to the gravity of the second electromagnet 12, the second plate 7 closes the leakage hole 6; in the second position, the first electromagnet 11 generates magnetic attraction to the second electromagnet 12. At this time, the second plate 7 swings to the maximum position, the leakage hole 6 is in the maximum open state, and the second electromagnet 12 is neither protruding nor concave on the first plate 5; in the third position, the first electromagnet 11 generates magnetic attraction to the second electromagnet 12. The second electromagnet 12 is subjected to the magnetic attraction force of the first electromagnet 11 at the second position and the third position, but the position of the second electromagnet 12 is different. Therefore, the second position and the third position are two positions in which the first electromagnet 11 on each third rod 16 gradually contacts the second electromagnet 12 and gradually moves away from the second electromagnet 12. In addition, during the rotation of the second rod 15, each third rod 16 will drive a piece of the first electromagnet 11 connected thereto to gradually contact the second electromagnet 12 and gradually move away from the second electromagnet 12. Then, the second electromagnet 12 will frequently move up and down on the first plate 5 to drive the elastic gasket 19 to shake. In this way, the medicine on the elastic gasket 19 can be shaken, which can not only avoid the accumulation of medicines, but also shake and break the agglomerated medicines.

[0049] Preferably, a plurality of protrusions 20 are arranged on the second electromagnet 12 , and in the process in which the second electromagnet 12 is attracted by the plurality of first electromagnets 11 in sequence, the plurality of third rods 16 intermittently squeeze the protrusions 20 to make the elastic gasket 19 vibrate.

[0050] Specifically, a plurality of protrusions 20 are arranged on the second electromagnet 12. When the third rod 16 drives the first electromagnet 11 to contact it, under the action of two opposite forces, magnetic force and extrusion force, the second electromagnet 12 will vibrate during the up and down movement, thereby better breaking up the agglomerated medicines.

[0051] Furthermore, the first rod body 13 includes a main section 130 hinged to the second electromagnet 12 and a secondary section 131 hinged to the second plate body 7. A second elastic member 132 is provided between the main section 130 and the secondary section 131. During the extension stroke of the first rod body 13, the second elastic member 132 pushes the elastic gasket 19 to arch.

[0052] Specifically, the second elastic member 132 is in the shape of a thin strip, one end of which is connected to the end of the main section 130 away from the second electromagnet 12, and the other end is connected to the end of the auxiliary section 131 away from the second plate 7. In the process of the first rod 13 extending, it is equivalent to the main section 130 and the auxiliary section 131 applying a squeezing force on both ends of the second elastic member 132, so that the second elastic member 132 is arched. In the initial state where the first rod 13 is not extended or shortened, the second elastic member 132 is slightly arched in the direction close to the elastic gasket 19 and contacts the elastic gasket 19. At this time, the second electromagnet 12 is not raised on the first plate 5. When the second electromagnet 12 protrudes upward on the first plate 5, the first rod 13 will stretch, and the second elastic member 132 will arch up the surface of the elastic gasket 19 to form a strip arch parallel to a certain radial direction. If the first rod 13 has several strip arches, the elastic gasket 19 will be pushed up to form several strip arches, and the medicine on the elastic gasket 19 will be divided. As the first plate 5 rotates, the strip arches are easier to break the block-shaped medicines, and the divided medicines are less likely to concentrate on the leakage holes 6 in a certain direction when entering the leakage holes 6.

[0053] Another embodiment provided by the present invention relates to a dosing method for sewage treatment, wherein the method for dosing sewage by using the above-mentioned dosing device for sewage treatment comprises the following steps:

[0054] Step 1: liquid medicine preparation: the screw conveying mechanism 3 conveys the medicine in the silo 2 to the instant dissolver 4, the water inlet pipe 14 conveys clean water to the instant dissolver 4 to premix with the incoming medicine, and the premixed liquid medicine enters the preparation box 1 to be prepared, matured and stored in sequence;

[0055] Step 2: Add the liquid medicine. The medicine metering pump will add the stored liquid medicine into the sewage to treat the sewage.

[0056] The above description is only by way of illustration of certain exemplary embodiments of the present invention. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A dosing device for sewage treatment, comprising a configuration box and a silo arranged on the configuration box, wherein the medicine in the silo is transported to an instant dissolver through a screw conveying mechanism to be premixed with clean water, characterized in that: A first plate is arranged in the instant dissolver, and a plurality of leakage holes are arranged circumferentially on the first plate. A second plate is swingably arranged in each leakage hole. A driving member is also arranged in the instant dissolver; the driving member drives the second plate to swing to open and close the leakage hole.

2. The dosing device for sewage treatment according to claim 1, characterized in that: A mesh plate is rotatably provided in the instant dissolver, the first plate body is rotatably provided in the instant dissolver, a plurality of premixing chambers are provided between the first plate body and the mesh plate, the plurality of premixing chambers correspond one to one with the plurality of leakage holes, the water inlet pipe on the instant dissolver delivers clean water to the stroke of the instant dissolver, and the premixing chamber rotates under the impact of the clean water to mix the medicine with the clean water.

3. The dosing device for sewage treatment according to claim 2, characterized in that: The driving member includes a first electromagnet arranged in the instant dissolver and a second electromagnet arranged at the center of the first plate body. The second electromagnet is connected to each second plate body through a first rod body with elastic telescopic function. When the first electromagnet and the second electromagnet attract each other, the leakage hole is in an open state; when there is no magnetic force between the first electromagnet and the second electromagnet, the leakage hole is in a closed state.

4. The dosing device for sewage treatment according to claim 3, characterized in that: The water inlet pipe is swingably arranged on the instant dissolver, and a first elastic member is provided at the swinging position of the two. Under the elastic force of the first elastic member, the water inlet pipe tilts the clean water to impact the premixing chamber. The water inlet pipe swings in the opposite direction based on the power of the screw conveying mechanism to overcome the elastic force of the first elastic member.

5. The sewage treatment dosing device according to claim 4, characterized in that: The mesh plate portion corresponding to the bottom of each premixing cavity is inclined, and the lowest point of the mesh plate is close to the central axis of the instant dissolver. A cavity connected to several premixing cavities is provided in the instant dissolver, and the bottom of the cavity is inclined, and its lowest point corresponds to the highest point of the mesh plate.

6. The dosing device for sewage treatment according to claim 4, characterized in that: A second rod body is rotatably provided in the instant dissolver, and a plurality of third rod bodies are sequentially arranged on the circumference of the second rod body. A plurality of fourth rod bodies are fixedly connected to the end of the second rod body close to the water inlet pipe. The spiral conveying mechanism pushes the plurality of third rod bodies sequentially during the course of conveying medicines, and the plurality of fourth rod bodies intermittently move the water inlet pipe based on the sequential pushing action of the plurality of third rod bodies.

7. The dosing device for sewage treatment according to claim 6, characterized in that: The first electromagnet is divided into several blocks, each end of the third rod body away from the second rod body is provided with a first electromagnet, and the first plate body is provided with an elastic gasket; when the second electromagnet is attracted by several first electromagnets in sequence, the second electromagnet drives the middle part of the elastic gasket to arch frequently.

8. The sewage treatment dosing device according to claim 7, characterized in that: A plurality of protrusions are arranged on the second electromagnet. During the process in which the second electromagnet is attracted by the plurality of first electromagnets in sequence, the plurality of third rods intermittently squeeze the protrusions to make the elastic gasket vibrate.

9. The dosing device for sewage treatment according to claim 7, characterized in that: The first rod body comprises a main section hinged to the second electromagnet and a secondary section hinged to the second plate body, a second elastic member is arranged between the main section and the secondary section, and during the extension stroke of the first rod body, the second elastic member pushes the elastic gasket to arch.

10. A method for dosing sewage treatment, based on the dosing device for sewage treatment according to any one of claims 1 to 9, characterized in that: The sewage treatment dosing method comprises the following steps: Liquid medicine preparation: the screw conveying mechanism transports the medicine in the silo to the instant dissolver, and the water inlet pipe transports clean water to the instant dissolver for premixing with the incoming medicine. The premixed liquid medicine enters the preparation box for preparation, maturation and storage in sequence; The medicine liquid is added and the medicine metering pump adds the stored medicine liquid into the sewage to treat the sewage.

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