A dosing delivery system suitable for caustic disinfectant

Abstract

The utility model provides a kind of dosing and feeding system suitable for corrosive disinfectant, belong to water treatment technical field.The dosing and feeding system, including storage tank, disinfectant is stored in storage tank interior, the output end of storage tank is connected with the input end of suction pump, the input end of ball valve is connected with the output end of suction pump, the input end of detector is connected with the output end of ball valve, the output end of detector is connected with disinfectant feeding object, further including a controller, controller is connected with suction pump, ball valve, detector communication respectively, further including at least one host computer, host computer is connected with at least one controller communication, the dosing and feeding system provided by the utility model can detect feeding process in feeding process, can be found in time to handle to avoid causing damage to equipment when abnormality appears in ball valve, not only reduce maintenance cost, but also can avoid the defect existing in artificial feeding mode.

Description

Technical Field

[0001] This utility model relates to the field of water treatment technology, and more specifically, to a dosing system suitable for corrosive disinfectants. Background Technology

[0002] Raw water often contains suspended solids such as sediment and colloids, as well as pathogens such as bacteria and viruses. To ensure water supply safety, water plants use disinfectants to treat the water during the tap water production process, ensuring that the water supply meets safety standards. Alum solution, as a coagulant, can rapidly coagulate tiny particles into large flocs and precipitate through charge neutralization and adsorption bridging, significantly reducing water turbidity and creating conditions for subsequent disinfection. Sodium hypochlorite solution, with its strong oxidizing properties, can effectively kill residual pathogens in the water and prevent secondary pollution by maintaining the residual chlorine concentration at the end of the pipe network. The combined use of these two solutions improves the sensory indicators of the water quality while ensuring microbiological safety, making it an indispensable key process for water plants to achieve compliant water supply.

[0003] Because alum solution and sodium hypochlorite solution are corrosive, the ball valve is prone to jamming or other abnormalities during the addition of disinfectant. This can cause the ball valve to fail to open properly when the suction pump draws the disinfectant from the storage tank, resulting in failure to add the disinfectant. In some cases, the pump chamber pressure may even increase suddenly, causing the pump body seal to leak.

[0004] To reduce the failure rate and maintenance costs of automatic dosing systems, manual dosing has been adopted. However, operators need to come into direct contact with corrosive solutions, which poses safety risks such as skin burns and chlorine inhalation. In addition, the labor intensity is high and the efficiency is low, making it difficult to meet the continuous and stable operation requirements of large-scale water plants. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a dosing system suitable for corrosive disinfectants. It can monitor the dosing process and promptly detect and handle any abnormalities in the ball valve to avoid damage to the equipment. This not only reduces maintenance costs but also avoids the defects of manual dosing.

[0006] This utility model is implemented as follows: A dosing system suitable for corrosive disinfectants includes a storage tank containing disinfectant, an output end of the storage tank connected to the input end of a suction pump, an output end of the suction pump connected to the input end of a ball valve, an output end of the ball valve connected to the input end of a detector, and an output end of the detector connected to the object to which the disinfectant is being added. The system also includes a controller that is communicatively connected to the suction pump, the ball valve, and the detector, and at least one host computer that is communicatively connected to the at least one controller.

[0007] In one embodiment of this utility model, the output end of the storage tank is connected in series with a suction pump, a ball valve and a detector via a pipeline.

[0008] In one embodiment of the present invention, the detector includes a valve body, which has a through channel running from front to back. The channel has a concave cavity, and a one-way sealing structure is provided in the concave cavity. A sensor for sensing the state of the one-way sealing structure is also provided at the cavity.

[0009] In one embodiment of this utility model, the one-way sealing structure includes a sleeve coaxially disposed inside the channel, and also includes a sealing valve plate. The sealing valve plate is connected to the sleeve by a hinge, and under the action of gravity, the sealing valve plate seals the end of the sleeve. The sealing valve plate is disposed on the side of the sleeve from which the disinfectant flows out.

[0010] In one embodiment of this utility model, the side of the sleeve near the sealing valve plate is set as an inclined surface, and the sealing valve plate is in contact with the inclined surface.

[0011] In one embodiment of this utility model, during the rotation of the sealing valve plate around the end face of the sleeve via the hinge, the cavity provides the sealing valve plate with a space for movement.

[0012] In one embodiment of this utility model, a limiting protrusion is provided at the position of the cavity near the rotation axis of the hinge to limit the rotation angle of the sealing valve plate.

[0013] In one embodiment of this utility model, the surface of the limiting protrusion is provided with an elastic layer.

[0014] In one embodiment of this utility model, the signal output terminal of the sensor is communicatively connected to the signal input terminal of the controller.

[0015] In one embodiment of this utility model, the sensor is either a corrosion-resistant ultrasonic proximity switch or a corrosion-resistant capacitive proximity switch.

[0016] The beneficial effects of this utility model are: the dosing system for corrosive disinfectants obtained by the above design can detect the dosing process during the dosing process, and can promptly detect and deal with any abnormalities in the ball valve to avoid damage to the equipment. This not only reduces maintenance costs, but also avoids the defects of manual dosing. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0018] Figure 1 A schematic diagram of the structure of the drug delivery system provided in this embodiment of the utility model; Figure 2 A schematic diagram of the structure of the ball valve provided for an embodiment of this utility model; Figure 3 A schematic diagram of the detector provided for an embodiment of this utility model; Figure 4 A schematic diagram of the first cross-sectional structure of the detector provided for an embodiment of this utility model; Figure 5 A schematic diagram of a second cross-sectional structure of the detector provided for an embodiment of this utility model.

[0019] In the diagram: 1. Storage tank; 2. Suction pump; 3. Ball valve; 4. Detector; 41. Valve body; 411. Channel; 412. Cavity; 42. Sleeve; 421. Inclined surface; 43. Sealing valve plate; 44. Hinge; 45. Limiting protrusion; 46. Sensor; 5. Controller; 6. Host computer. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0021] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0022] Figure 1 A schematic diagram of the dosing system provided in this embodiment of the present invention is shown, which includes a control section, a conveying section and a detection section.

[0023] The conveying section includes a storage tank 1, a suction pump 2, and a ball valve 3. The storage tank 1 stores disinfectant. The output end of the storage tank 1 is connected to the input end of the suction pump 2, and the output end of the suction pump 2 is connected to the input end of the ball valve 3.

[0024] The difference from the existing dosing system is that in this solution, a detector 4 is installed at the output end of the ball valve 3. The output end of the detector 4 is connected to the disinfectant dosing object, such as a pipeline, storage tank 1, or water pool. The output end of the storage tank 1 is connected in series with the suction pump 2, the ball valve 3, and the detector 4 through a pipeline. The storage tank 1, the suction pump 2, and the ball valve 3 are all made of materials resistant to corrosion by alum solution and sodium hypochlorite solution, and existing products can be directly purchased.

[0025] like Figures 3-5 As shown, the detection part includes a detector 4, which includes a valve body 41. The valve body 41 has a through channel 411 running from front to back. The channel 411 has a recessed cavity 412. A one-way sealing structure is provided in the recessed cavity 412 of the channel 411. A sensor 46 is also provided at the cavity 412 to sense the state of the one-way sealing structure. The one-way sealing structure moves up and down with the flow of disinfectant. The sensor 46 collects the position of the one-way sealing structure during the up and down movement of the one-way sealing structure, so as to determine whether there is disinfectant flowing in the pipeline.

[0026] It should be noted that the material of detector 4 is a material that is resistant to corrosion by alum solution and sodium hypochlorite solution in existing technology.

[0027] like Figures 4-5 As shown, the one-way sealing structure includes a sleeve 42, which is coaxially disposed inside the channel 411, and also includes a sealing valve plate 43. The sealing valve plate 43 is connected to the sleeve 42 through a hinge 44. During the rotation of the sealing valve plate 43 around the end face of the sleeve 42 through the hinge 44, the cavity 412 provides the sealing valve plate 43 with a space for movement. Under the action of gravity, the sealing valve plate 43 seals the end of the sleeve 42. The sealing valve plate 43 is located on the side of the sleeve 42 where the disinfectant flows out.

[0028] The sealing valve plate 43 is made of fluororubber or other materials that are resistant to corrosion by alum solution and sodium hypochlorite solution.

[0029] In a preferred embodiment, the side of the sleeve 42 near the sealing valve plate 43 is provided with an inclined surface 421, and the sealing valve plate 43 is in contact with the inclined surface 421. The function of providing the inclined surface 421 is to improve the fit between the sealing valve plate 43 and the sleeve 42, so that it can better fit with the end face of the sleeve 42 under the action of gravity.

[0030] In another preferred embodiment, a limiting protrusion 45 is provided at the cavity 412 near the rotation axis of the hinge member 44 to limit the rotation angle of the sealing valve plate 43. In a further embodiment, the surface of the limiting protrusion 45 is provided with an elastic layer to prevent the hinge member 44 from making rigid contact with the limiting protrusion 45 and causing damage during the rotation of the sealing valve plate 43.

[0031] The hinge 44 includes two hinge structures that are hinged together, one of which is connected to the sealing valve plate 43 and the other is connected to the sleeve 42. The two hinge structures are assembled together with a clearance fit.

[0032] The sensor 46 is one of a corrosion-resistant ultrasonic proximity switch or a corrosion-resistant capacitive proximity switch, used to detect the opening and closing process of the sealing valve plate 43 as the disinfectant output fluctuates. When the sealing valve plate 43 is open and closes to the sensor 46, the sensor 46 detects that the sealing valve plate 43 is open. When the sealing valve plate 43 is closed and moves away from the sensor 46, the sensor 46 detects that the sealing valve plate 43 is closed.

[0033] like Figures 1-5 As shown, the control unit includes a controller 5 and a host computer 6. The controller 5 is communicatively connected to the suction pump 2, the ball valve 3, and the detector 4, respectively. It also includes at least one host computer 6, which is communicatively connected to at least one controller 5.

[0034] After the operator outputs the dosing command through the host computer 6, the controller 5 controls the ball valve 3 and the suction pump 2 to open. The suction pump 2 draws out the disinfectant from the storage tank 1 and adds it through the pipeline. During this process, if the sensor 46 detects that the sealing valve plate 43 is open, it is determined that the ball valve 3 is normal. If the sensor 46 detects that the sealing valve plate 43 is not open, it is determined that the ball valve 3 is faulty, and the controller 5 shuts down the suction pump 2.

[0035] The communication control between the controller 5 and the host computer 6 uses existing technology. At the same time, the controller 5 controls the suction pump 2 and the ball valve 3, and the controller 5 determines whether the sealing valve plate 43 is open based on the signal of the sensor 46 using existing logic circuits, which are independent of the program. Its working principle is as follows: the controller 5 outputs an enable level to open the suction pump 2 and the ball valve 3. The sensor 46 detects the position of the sealing valve plate 43 and outputs a high level (open) or a low level (closed). When the sealing valve plate 43 outputs a high level, the controller 5 keeps the enable level of the suction pump 2 high and keeps the ball valve 3 enabled. When the sealing valve plate 43 outputs a low level, the controller 5 sets the enable level of the suction pump 2 low and cuts off the power supply to the suction pump 2 and cuts off the enable of the ball valve 3.

[0036] It should be noted that the specific models and specifications of the suction pump 2, ball valve 3, sensor 46, controller 5 and host computer 6 need to be selected and determined according to the actual specifications of the device. The specific selection calculation method adopts the existing technology in this field, so it will not be described in detail.

[0037] The power supply and operating principle of the suction pump 2, ball valve 3, sensor 46, controller 5 and host computer 6 are clear to those skilled in the art and will not be described in detail here.

[0038] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A dosing system suitable for corrosive disinfectants, characterized in that: It includes a storage tank (1), which stores disinfectant. The output end of the storage tank (1) is connected to the input end of a suction pump (2). The output end of the suction pump (2) is connected to the input end of a ball valve (3). The output end of the ball valve (3) is connected to the input end of a detector (4). The output end of the detector (4) is connected to the object to which the disinfectant is added. It also includes a controller (5), which is communicatively connected to the suction pump (2), the ball valve (3), and the detector (4).

2. The dosing system according to claim 1, characterized in that, The output end of the storage tank (1) is connected in series with the suction pump (2), ball valve (3) and detector (4) through pipes.

3. The dosing system according to claim 1, characterized in that, The detector (4) includes a valve body (41), which has a through channel (411) that runs from front to back. The channel (411) has a recessed cavity (412). A one-way sealing structure is provided in the recessed cavity (412) of the channel (411), and a sensor (46) is provided at the cavity (412) to sense the state of the one-way sealing structure.

4. The dosing system according to claim 3, characterized in that, The one-way sealing structure includes a sleeve (42) which is coaxially disposed inside the channel (411) and a sealing valve (43). The sealing valve (43) is connected to the sleeve (42) by a hinge (44). Under the action of gravity, the sealing valve (43) seals the end of the sleeve (42). The sealing valve (43) is disposed on the side of the sleeve (42) from which the disinfectant flows out.

5. The dosing system according to claim 4, characterized in that, The side of the sleeve (42) near the sealing valve plate (43) is set as an inclined surface (421), and the sealing valve plate (43) is in contact with the inclined surface (421).

6. The dosing system according to claim 4, characterized in that, During the rotation of the sealing valve plate (43) around the end face of the sleeve (42) via the hinge (44), the cavity (412) provides the moving space for the sealing valve plate (43).

7. The dosing system according to any one of claims 3 to 6, characterized in that, A limiting protrusion (45) is also provided at the cavity (412) near the rotation axis of the hinge (44) to limit the rotation angle of the sealing valve plate (43).

8. The dosing system according to claim 7, characterized in that, The surface of the limiting protrusion (45) is provided with an elastic layer.

9. The dosing system according to any one of claims 3 to 6, characterized in that, The signal output terminal of the sensor (46) is connected to the signal input terminal of the controller (5) for communication.

10. The dosing system according to claim 8, characterized in that, The sensor (46) is one of a corrosion-resistant ultrasonic proximity switch or a corrosion-resistant capacitive proximity switch.

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