Automatic dosing device of metering pump for sewage treatment

Abstract

The invention relates to the technical field of sewage treatment, and discloses a metering pump automatic dosing device for sewage treatment, which comprises a transmission part, the transmission part is positioned at the top end of the outer part of a dosing tank and is used for transmitting a dissolved medicament, and the transmission part comprises a transmission pipe linked with a mixing tank and the dosing tank; a driving part is arranged on the outer side of the side, close to the dosing tank, of the conveying pipe, a screening part for screening the dissolved medicament is arranged at the position, located below the driving part, in the conveying pipe, and the screening part can slide in an inner cavity of the conveying pipe. A motor rotates to drive a fixing rod in a fixing plate to rotate, the fixing rod rotates to drive spiral teeth to rotate, the spiral teeth rotate to drive a gear ring connected with the spiral teeth in a meshed mode to rotate, the gear ring slides on the inner side of a positioning ring groove, the gear ring drives the screening piece to rotate under limitation of the positioning ring groove, and the chance that materials make contact with a screen is increased; and the screening process is accelerated, so that materials are effectively separated on the screen surface.

Description

Technical Field

[0001] The invention relates to the technical field of sewage treatment, and in particular to an automatic dosing device for a metering pump used for sewage treatment. Background Art

[0002] In the sewage treatment process, the metering pump is used to suck out the chemical agent from the medicine tank and put it into the sewage pool. The agent reacts with certain substances in the sewage to neutralize and remove some pollutants. Metering pump dosing devices have been widely used in water treatment, chemical industry, environmental protection and other fields. For example, in municipal water supply treatment, it is used to add disinfectants and pH adjusters; in sewage treatment, it is used to add coagulants, flocculants and disinfectants. These devices can accurately control the dosage of the agent, improve treatment efficiency and reduce operating costs. Compared with the screw pump, the metering pump is more accurate in the dosing link and can better control the dosage of the agent.

[0003] After manual preparation, the medicine is placed in the medicine adding box. In the prior art, the medicine added in sewage treatment needs to be dissolved in water when used. During the sewage treatment process, if the added medicine solution is not completely dissolved, then the undissolved part is likely to sink to the bottom during the static process before being added to the sewage. This is because the undissolved medicine is usually solid particles, whose density is greater than that of water. Therefore, in the absence of continuous stirring or flow, these solid particles will settle to the bottom of the container due to gravity. The longer the static time, the more thoroughly the undissolved medicine particles will settle. The precipitated undissolved medicine may affect the effect of sewage treatment because they do not play the expected chemical role. In addition, the sediment may also block the pipe or affect the subsequent treatment process. Summary of the invention

[0004] Technical issues solved

[0005] In view of the above-mentioned shortcomings of the prior art, the present invention provides a metering pump automatic dosing device for sewage treatment, which can effectively solve the problem of the prior art that the agent is not completely dissolved and precipitates, affecting the sewage treatment effect.

[0006] Technical Solution

[0007] To achieve the above objectives, the present invention is implemented through the following technical solutions:

[0008] The present invention provides a metering pump automatic dosing device for sewage treatment, comprising:

[0009] Dosing tank;

[0010] A transmission part, the transmission part is located at the top of the outside of the dosing tank and is used to transmit the dissolved medicine. The transmission part includes a transmission pipe that links the mixing tank and the dosing tank. A driving member is arranged on the outside of the transmission pipe close to the dosing tank. A screening member for screening the dissolved medicine is arranged at a position below the driving member in the transmission pipe. The screening member can slide in the internal cavity of the transmission pipe to intercept undissolved medicine particles on the outside of the dosing tank.

[0011] A drug dispensing port, the drug dispensing port is located at the outer bottom of the drug dispensing tank and is used to automatically drip chemical agents into the sewage;

[0012] Wherein, the transmission part further comprises a fixed block fixedly arranged on the outside of the driving member, and a cleaning member for self-cleaning undissolved pharmaceutical particles is arranged on the inside of the fixed block.

[0013] Furthermore, the driving member includes a fixing ring fixed to the outside of the transmission tube, the top of the fixing ring is fixedly connected to a fixing plate, the outer end of the fixing plate is provided with a motor, the output end of the motor is transmission-connected to a fixing rod, the middle part of the fixing rod is fixedly connected to a screw tooth, one end of the fixing rod passes through the fixing plate and is rotatably connected inside the fixing plate, and the bottom end of the screw tooth is meshingly connected to a gear ring.

[0014] Furthermore, the screening element comprises a limiting ring fixedly connected to the inside of the gear ring, a sealing ring is fixedly connected to the side of the limiting ring, and a sieve plate is fixedly connected to the inside of the limiting ring.

[0015] Furthermore, the transmission pipe also includes a sieve tube that is fitted with the inner surface of the fixed ring, the inner wall of the sieve tube is provided with a positioning ring groove that is slidingly sealed with the surface of the sealing ring, the inner side of the positioning ring groove is slidably connected with the gear ring, an arc groove is provided in the middle of the top end of the sieve tube, the gear ring is arranged in the lower part of the inner side of the arc groove, and the screw teeth are embedded in the upper part of the inner side of the arc groove.

[0016] Furthermore, a cleaning piece is provided on the outside of the sieve tube, and the cleaning piece includes a positioning block fixedly connected to the side of the sieve tube, a scraper is fixedly connected to the bottom end of one side of the positioning block, a side plate 1 is provided on the side of the scraper, the side plate 1 is fixedly connected to the middle part of one side of the sieve tube, a side plate 2 is provided on one side of the side plate, a handle is fixedly connected to the top end of the side plate 2, and the handle is slidably connected to the middle part of the fixed block.

[0017] Furthermore, both ends of the scraper are arranged to be arc-shaped, and the size of the scraper is equal to the diameter of the screen plate, the scraper is fitted with one side of the screen plate, and the side of the scraper away from the side plate is arranged to be an inclined surface.

[0018] Furthermore, the side panel 1, the side panel 2 and the handle form a cavity for temporarily storing undissolved pharmaceutical particles, and there is a gap between the cavity and the inclined surface of the side panel 2.

[0019] Beneficial Effects

[0020] Compared with the prior art, the technical solution provided by the present invention has the following beneficial effects:

[0021] The present invention is provided with a screening member, and a motor is started. The rotation of the motor drives the fixed rod inside the fixed plate to rotate, and the rotation of the fixed rod drives the screw gear to rotate. The rotation of the screw gear drives the gear ring meshed with it to rotate, and the gear ring slides on the inner side of the positioning ring groove. The gear ring drives the screening member to rotate under the restriction of the positioning ring groove. Compared with the screening member whose fixed position remains unchanged, the rotating screening member not only makes the material move quickly on the screen, increases the chance of the material contacting the screen, and accelerates the screening process, but also makes the material produce a jumping motion on the screen surface, which helps the material pass through the screen holes and reduces the adhesion of the material on the screen surface. The vibration of the screen makes the material produce a jumping motion on the screen surface, which helps the material pass through the screen holes and reduces the adhesion of the material on the screen surface. The material is always subjected to the action of gravity during the screening process. The combined action of gravity, centrifugal force and vibration force makes the material effectively separated on the screen surface.

[0022] The present invention is provided with a cleaning piece, and side plate one, side plate two and a handle form a rectangular cavity, the opening of the cavity is in contact with the scraper, and there is a gap between the scraper and the side of the side plate two. When the sieve plate rotates, it rotates relative to the scraper, and the undissolved pharmaceutical particles on the surface of the sieve plate can enter the cavity along the inclined surface of the scraper. Due to the rotation of the sieve plate, more pharmaceutical particles are accumulated on the periphery of the sieve plate, and the scraper gradually moves the particles accumulated on the periphery into the cavity, thereby self-cleaning the sieve plate surface that has passed the sieve to avoid clogging of the sieve plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the prior art descriptions. Obviously, the drawings described below are only some embodiments of the present invention, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0024] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present invention;

[0025] Figure 2 It is a schematic side view of the transmission part structure of an embodiment of the present invention;

[0026] Figure 3 It is a perspective schematic diagram of the driving member structure of an embodiment of the present invention;

[0027] Figure 4 It is a schematic diagram of the separation structure of the transmission pipe, the driving member and the screening member according to an embodiment of the present invention;

[0028] Figure 5 This is a schematic structural diagram of the transmission tube side of an embodiment of the present invention;

[0029] Figure 6 Schematic diagram of the separation of the cleaning component structure according to an embodiment of the present invention.

[0030] The numbers in the figure represent: 1. Dosing tank; 2. Transmission part; 21. Transmission pipe; 211. Screening pipe; 212. Positioning ring groove; 213. Arc groove; 22. Driving member; 221. Fixed plate; 222. Fixed rod; 223. Screw gear; 224. Motor; 225. Fixed ring; 226. Gear ring; 23. Screening member; 231. Screen plate; 232. Limiting ring; 233. Sealing ring; 24. Fixed block; 25. Cleaning member; 251. Side panel one; 252. Side panel two; 253. Handle; 254. Scraper; 255. Positioning block; 3. Drug dispensing port. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] The present invention will be further described below in conjunction with the embodiments.

[0033] Example:

[0034] See also Figure 1-Figure 6 The present invention provides a technical solution for an automatic dosing device of a metering pump for sewage treatment: the device includes a dosing tank 1 for temporarily storing a dissolved pharmaceutical solution, a transmission part 2 is arranged at the top of the outer side of the dosing tank 1, the transmission part 2 is connected with the dosing tank 1 and the mixing tank, and the dissolved pharmaceutical in the mixing tube is transmitted to the dosing tank 1 through the transmission part 2. The structure of the mixing tank is the same as the stirring tank in the prior art. The pharmaceutical and water are blended and stirred evenly and then transmitted through the transmission part 2. Some incompletely dissolved pharmaceutical particles may exist in the dissolved solution.

[0035] In order to prevent incompletely dissolved drug particles from entering the dosing tank 1, solid particles settle to the bottom of the container due to gravity. The precipitated undissolved drug may affect the effect of sewage treatment, or even block the pipeline or affect the subsequent treatment process. The dissolved drug is screened during the process of being transmitted from the dosing tank 1 to the transmission part 2 to prevent undissolved particles from entering the dosing tank 1. The drug discharge port 3 is located at the bottom of the dosing tank 1 and is used to automatically add chemical agents to the sewage. According to the control system, the switch of the drug discharge port 3 is controlled to accurately and automatically add the required drug solution to the sewage.

[0036] For this purpose, the present invention is provided as follows Figure 2 The sieving member 23 shown in the figure can be provided with a plurality of sieving members 23, which are placed in sequence according to the size of the sieve holes. In this embodiment, one sieving member 23 is taken as an example, and the sieving member 23 is arranged on the side of the transmission part 2 close to the dosing tank 1, referring to Figure 3 and Figure 4 The screening element 23 includes a screen plate 231 with a plurality of screen holes evenly formed therein, a limit ring 232 is fixedly connected to the outer surface of the circular shaft of the screen plate 231, a sealing ring 233 is arranged on the side of the limit ring 232, a toothed ring 226 is fixedly connected to the outer surface of the circular shaft of the limit ring 232, and the toothed ring 226 is embedded in the inner side of the positioning ring groove 212, the part of the screening element 23 located in the cavity of the transmission pipe 21 is the screening pipe 211, a positioning ring groove 212 is formed in the inner side of the screening pipe 211, and a sealing ring 233 is arranged on the inner wall side of the positioning ring groove 212 to slide with the sealing ring 233 The sealing layer of the dynamic seal, the inner wall of the positioning ring groove 212 is slidably connected with the outer surface of the gear ring 226, the width of the sieve plate 231 is greater than the width of the gear ring 226, and the two sides of the sieve plate 231 are flush with the side edges of the sieve tube 211. The gear ring 226 can drive the limiting ring 232 fixedly connected thereto to slide on the inner side of the positioning ring groove 212, and the limiting ring 232 drives the sieve plate 231 to slide synchronously, and the sealing ring 233 always maintains a sliding seal with the side edge of the positioning ring groove 212, so that the screening process can be quickly completed when the pharmaceutical solution passes through the screening element 23.

[0037] refer to Figure 2 , Figure 3 and Figure 4The outer surface of the sieve tube 211 with the sieve member 23 embedded therein is fixedly connected with a driving member 22. The driving member 22 can also be set to be detachably connected with the outer surface of the sieve tube 211 to achieve comprehensive cleaning and maintenance of the driving member 22. The driving member 22 includes a fixing ring 225 that fits the outer surface of the circular shaft of the sieve tube 211. The top of the fixing ring 225 is fixedly connected with a fixing plate 221. The middle of the fixing plate 221 is penetrated by a fixing plate 221, and a fixing rod 222 is rotatably connected to the middle of the fixing plate 221. One end of the fixing rod 222 is transmission-connected to the output end of the motor 224. The motor 22 The rotation can drive the fixing rod 222 to rotate inside the fixing plate 221. A screw tooth 223 is sleeved on the outer side of the middle part of the fixing rod 222. The bottom end of the screw tooth 223 is embedded in the upper part of the arc groove 213 opened at the top of the sieve tube 211. The length of the screw tooth 223 is smaller than the length of the arc groove 213. When the screw tooth 223 rotates, it does not contact the inner wall of the arc groove 213, and the two do not interfere with each other. The arc groove 213 penetrates the positioning ring groove 212. The top part of the rotating gear ring 226 is always located at the lower part of the arc groove 213, and the bottom end of the screw tooth 223 is meshed and connected with the top end of the gear ring 226.

[0038] The motor 224 is started, and the rotation of the motor 224 drives the fixed rod 222 inside the fixed plate 221 to rotate. The rotation of the fixed rod 222 drives the screw gear 223 to rotate. The rotation of the screw gear 223 drives the gear ring 226 meshed with it to rotate. The gear ring 226 slides inside the positioning ring groove 212, and the gear ring 226 drives the screening member 23 to rotate under the restriction of the positioning ring groove 212. Compared with the screening member 23 whose fixed position remains unchanged, the rotating screening member 23 not only makes the material move quickly on the screen, increases the chance of contact between the material and the screen, and accelerates the screening process, but also makes the material jump on the screen surface, which helps the material pass through the screen holes and reduces the adhesion of the material on the screen surface. The vibration of the screen makes the material jump on the screen surface, which helps the material pass through the screen holes and reduces the adhesion of the material on the screen surface. The material is always affected by gravity during the screening process. The combined effect of gravity, centrifugal force and vibration force makes the material effectively separated on the screen surface.

[0039] refer to Figure 4 , Figure 5 and Figure 6The two sides of the sieve plate 231 are flush with the surface of the sieve tube 211. A cleaning member 25 is provided at one end of the sieve tube 211. The cleaning member 25 includes a positioning block 255 fixedly connected to one end of the sieve tube 211. A scraper 254 is fixedly connected to one side of the positioning block 255 close to the sieve plate 231. The length of the scraper 254 is equal to the size of the sieve plate 231, and both ends of the scraper 254 are set to an arc shape. The scraper 254 is always completely in contact with the surface of the sieve plate 231. One side of the scraper 254 is in contact with the surface of the sieve plate 231, and the other side of the scraper 254 is set to an inclined surface, and the large size of the inclined surface is fixed on the side. A side plate 251 is fixedly connected thereto, and the side plate 251 is arranged as an L-shaped plate. The inner wall of the side plate 251 is fitted with one side of the scraper plate 254, and one side of the side plate 251 is fixedly connected to the side of the sieve tube 211, and the other side of the side plate 251 is located inside the fixed block 24, and the fixed block 24 is fixedly arranged on the outside of the driving member 22. The inner wall of the side plate 251 is slidably connected thereto with a side plate 252, and the side plate 252 is tightly fitted with the inner wall of the side plate 251. A handle 253 is fixedly connected to the top of the side plate 252, and the handle 253 is arranged in an arch shape for easy picking and operation by the staff.

[0040] The side plate 1 251, the side plate 252 and the handle 253 form a rectangular cavity, the opening of the cavity is in contact with the scraper 254, and there is a gap between the scraper 254 and the side of the side plate 252. When the sieve plate 231 rotates, it rotates relative to the scraper 254. The undissolved pharmaceutical particles on the surface of the sieve plate 231 can enter the cavity along the inclined surface of the scraper 254. Due to the rotation of the sieve plate 231, more pharmaceutical particles are accumulated on the periphery of the sieve plate 231. The scraper 254 gradually moves the particles accumulated on the periphery into the cavity, thereby self-cleaning the surface of the sieve plate 231 that has passed the sieve to avoid blockage of the sieve plate 231.

[0041] As the particles gradually accumulate in the cavity, the staff pulls the handle 253 slidably connected to the middle part of the fixed block 24 after a period of time, and the handle 253 drives the side plate 252 to move upward, and the accumulated particles are moved out of the cavity along with the side plate 252, and are uniformly collected and continued to be used to reduce the waste of medicine. During the upward movement of the side plate 252, the lower part of the cavity is in an open state, and the particles will fall on the periphery of the sieve plate 231 again under the action of gravity and gradually accumulate, and will not be left on the inner wall of the side plate 1 251. When the side plate 252 moves down to the initial position, the side plate 252 cleans the inner wall of the side plate 1 251 until the side plate 252 moves down to the bottom end of the side plate 1 251, and the top end of the handle 253 is engaged above the side plate 1 251, and the cavity is restored to a state where only the gap between the side plate 252 and the scraper 254 is used as the inlet of the particles, thereby avoiding the accumulation of particles in the cavity during the cleaning process and improving the cleaning efficiency.

[0042] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. A metering pump automatic dosing device for sewage treatment, characterized in that: include: Dosing tank (1); A transmission part (2), the transmission part (2) is located at the top of the outside of the dosing tank (1) and is used to transmit the dissolved medicine. The transmission part (2) comprises a transmission pipe (21) which links the mixing tank and the dosing tank (1). A driving member (22) is arranged on the outside of the side of the transmission pipe (21) close to the dosing tank (1). A screening member (23) for screening the dissolved medicine is arranged at a position below the driving member (22) in the transmission pipe (21). The screening member (23) can slide in the internal cavity of the transmission pipe (21) to intercept undissolved medicine particles on the outside of the dosing tank (1); A drug dispensing port (3), the drug dispensing port (3) being located at the outer bottom of the drug dispensing tank (1) and being used for automatically dripping chemical agents into the sewage; The transmission part (2) further comprises a fixed block (24) fixedly arranged on the outside of the driving member (22), and a cleaning member (25) for self-cleaning undissolved drug particles is arranged on the inside of the fixed block (24).

2. The automatic dosing device for a metering pump used for sewage treatment according to claim 1 is characterized in that: The driving member (22) comprises a fixing ring (225) fixed on the outside of the transmission tube (21); the top of the fixing ring (225) is fixedly connected to a fixing plate (221); the outer end of the fixing plate (221) is provided with a motor (224); the output end of the motor (224) is drivingly connected to a fixing rod (222); the middle of the fixing rod (222) is fixedly connected to a screw tooth (223); one end of the fixing rod (222) passes through the fixing plate (221) and is rotatably connected inside the fixing plate (221); the bottom end of the screw tooth (223) is meshingly connected to a gear ring (226).

3. The automatic dosing device for a metering pump used for sewage treatment according to claim 2 is characterized in that: The screening element (23) comprises a limiting ring (232) fixedly connected to the inside of the gear ring (226), a sealing ring (233) fixedly connected to the side of the limiting ring (232), and a sieve plate (231) fixedly connected to the inside of the limiting ring (232).

4. The automatic dosing device for a metering pump used for sewage treatment according to claim 3 is characterized in that: The transmission pipe (21) further comprises a sieve pipe (211) fitted with the inner surface of the fixing ring (225); the inner wall of the sieve pipe (211) is provided with a positioning ring groove (212) which is slidably sealed with the surface of the sealing ring (233); the inner side of the positioning ring groove (212) is slidably connected with the gear ring (226); an arc-shaped groove (213) is provided at the middle of the top end of the sieve pipe (211); the gear ring (226) is arranged at the lower inner part of the arc-shaped groove (213); and the screw teeth (223) are embedded in the upper inner part of the arc-shaped groove (213).

5. The automatic dosing device for a metering pump used for sewage treatment according to claim 4 is characterized in that: A cleaning piece (25) is arranged on the outside of the sieve tube (211), and the cleaning piece (25) comprises a positioning block (255) fixedly connected to the side of the sieve tube (211); a scraper (254) is fixedly connected to the bottom end of one side of the positioning block (255); a side plate 1 (251) is arranged on the side of the scraper (254); the side plate 1 (251) is fixedly connected to the middle part of one side of the sieve tube (211); a side plate 2 (252) is arranged on the side of the side plate 1 (251); a handle (253) is fixedly connected to the top end of the side plate 2 (252); and the handle (253) is slidably connected to the middle part of the fixed block (24).

6. The automatic dosing device for a metering pump used for sewage treatment according to claim 5, characterized in that: The two ends of the scraper (254) are arranged in an arc shape, and the size of the scraper (254) is equal to the diameter of the sieve plate (231). The scraper (254) is fitted with one side of the sieve plate (231), and the side of the scraper (254) away from the side plate (251) is arranged as an inclined surface.

7. The automatic dosing device for a metering pump used for sewage treatment according to claim 6, characterized in that: The side plate 1 (251), the side plate 2 (252) and the handle (253) form a cavity for temporarily storing undissolved medicine particles, and there is a gap between the cavity and the inclined surface of the side plate 2 (252).

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