Dosing device for water plant and sewage plant

Abstract

The utility model discloses a dosing device for a water plant and a sewage plant, and relates to the technical field of water treatment devices, the dosing device comprises a main pipe, a connecting pipe and a dosing pipe assembly, the connecting pipe is communicated with the main pipe, the dosing pipe assembly penetrates through the connecting pipe and extends into the main pipe, and the connecting pipe is communicated with the main pipe. The dosing pipe assembly comprises a plurality of branch pipes with the same size specification, the branch pipes are fixed in a quincunx shape, non-return assemblies are arranged in the branch pipes, and a medicament is fed from one ends of the branch pipes and falls above the non-return assemblies; a connecting device is arranged at the top of the medicine adding pipe assembly, one end of the connecting device is detachably connected with the medicine adding pipe assembly, the other end of the connecting device is connected with an air pump, and the air pump pumps air to drive the non-return assembly to be opened. One medicament can be fed through each branch pipe, reaction of different medicaments is avoided, the medicament can be quantitatively stored in advance, timely feeding can be performed when needed, efficiency is improved, and manpower is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of water treatment devices, in particular to a dosing device used in water plants and sewage plants. Background Art

[0002] In water plants or sewage plants, sometimes it is necessary to add chemicals to the pipelines, and use the flow time of water in the pipelines to achieve contact, mixing and chemical reaction between the chemicals and the raw water. However, the existing chemical injection generally considers one set of dosing devices for one chemical at one dosing point. When the water treatment and mud treatment processes are complicated, there are multiple types of dosing chemicals. According to the existing technology, multiple dosing devices are required, and the chemicals are injected by high-pressure injection, which not only increases equipment facilities and investment, but also has high energy consumption.

[0003] The Chinese patent with the authorization announcement number CN208964565U discloses a multi-agent mixing dosing device, in which a main dosing pipe and a plurality of secondary dosing pipes are connected in series on the dosing pipe, and the plurality of secondary dosing pipes are inclined and cross-connected.

[0004] They are staggered on both sides of the main dosing pipe and can add multiple chemicals at one time.

[0005] However, this solution still has some shortcomings. Since this solution is connected in series with the main dosing pipe through multiple secondary dosing pipes, different reagents will flow into the water through the main dosing pipe, and it is impossible to use a dosing pipe for each reagent. The residues of different reagents are prone to react, causing pipeline corrosion and affecting the dosing effect.

[0006] At the same time, this solution cannot quantitatively administer the drug, nor can it store the drug in advance and then quickly administer it when it is needed. Utility Model Content

[0007] The utility model aims to provide a dosing device for water plants and sewage plants to solve the problems existing in the background technology.

[0008] The purpose of this utility model is achieved through the following technical solutions:

[0009] A dosing device for a water plant and a sewage plant comprises a main pipe, a connecting pipe and a dosing pipe assembly, wherein the connecting pipe is in communication with the main pipe, the dosing pipe assembly extends into the main pipe through the connecting pipe, the dosing pipe assembly comprises a plurality of branch pipes of the same size and specification, the plurality of branch pipes are fixed in a plum blossom shape, a non-return assembly is arranged in the branch pipe, a medicine is introduced from one end of the branch pipe and falls on the top of the non-return assembly; a connecting device is arranged on the top of the dosing pipe assembly, one end of the connecting device is detachably connected to the dosing pipe assembly, the other end of the connecting device is connected to an air pump, and the air pump drives the non-return assembly to open by pumping air.

[0010] Furthermore, the anti-return assembly includes a baffle, a connecting column, an abutment ring and a support rod, the connecting column is located in the middle of the baffle, the abutment ring is fixed on the inner wall of the branch pipe, the baffle is located on the side of the abutment ring close to the main pipe, the diameter of the baffle is larger than the inner diameter of the abutment ring and smaller than the inner diameter of the branch pipe, the support rod is located on the side of the abutment ring away from the main pipe and fixed to the inner wall of the branch pipe, a limiting ring for the connecting column to pass through is provided in the middle of the support rod, the inner diameter of the limiting ring is adapted to the diameter of the connecting column, a spring is provided between the support rod and the baffle, one end of the spring is fixedly connected to the baffle, and the other end of the spring is fixed to the limiting ring.

[0011] Furthermore, the connection column is provided with a limiting head on a side of the limiting ring away from the main pipe, and a size of the limiting head is larger than an inner diameter of the limiting ring.

[0012] Furthermore, a side of the baffle plate close to the support rod is a conical surface, and a side of the abutment ring close to the support rod is also a conical surface.

[0013] Furthermore, the connecting device includes a large-end connector, a connecting cavity and a small-end connector, the large-end connector is located on one side of the connecting cavity, the large-end connector is adapted to the air pipe size of the air pump, the outer diameter of the small-end connector is adapted to the inner diameter of the branch pipe, the small-end connector is plugged into the branch pipe, and a plurality of the small-end connectors are arranged in a plum blossom shape on one side of the connecting cavity away from the large-end connector, and the position of each of the small-end connectors corresponds to each of the branch pipes.

[0014] Furthermore, the small-end connector is provided with an internal thread, the small-end connector is provided with a sealing plug, the sealing plug is provided with an external thread, and the sealing plug is threadedly connected to the small-end connector.

[0015] Furthermore, the connecting pipe is welded and fixed to the main pipe, two flanges are provided on the side of the connecting pipe away from the main pipe, a wing plate is provided between the two flanges, the wing plate is fixed by the two flanges, and the wing plate is fixedly connected to the branch pipe.

[0016] Furthermore, one end of the branch pipe extending into the main pipe is a bevel structure, and the bevel of the branch pipe is arranged with a back pressure of the fluid in the main pipe.

[0017] The beneficial effects of the utility model are:

[0018] 1) The dosing pipe assembly consists of multiple branch pipes arranged in a plum blossom shape. One agent is added through each branch pipe to avoid reactions between different agents. At the same time, appropriate branch pipe materials can be selected according to the properties of each agent to avoid the problem of pipeline corrosion caused by adding different agents to a single dosing pipe.

[0019] 2) The anti-return component can prevent water vapor and the like from entering the top of the anti-return component, ensure the dryness of the branch pipe above the anti-return component, and ensure that the reagent above the anti-return component will not dissolve and deteriorate.

[0020] 3) Through the cooperation of the check assembly and the connecting assembly, some medicines can be stored in advance, and can be delivered in time when needed, which improves efficiency and reduces manpower. At the same time, the medicines can be stored in a quantitative manner to avoid waste. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a cross-sectional view of a dosing device used in a water plant and a sewage plant according to the utility model;

[0022] Figure 2 It is a top view of the medicine adding pipe assembly in the utility model;

[0023] Figure 3 It is a cross-sectional view of the stop reverse assembly of the utility model;

[0024] Figure 4 It is a top view of the support rod in the utility model;

[0025] Figure 5 It is a schematic diagram of the connection device in the utility model;

[0026] In the figure, 11-branch pipe, 2-main pipe, 3-connecting pipe, 31-flange, 32-wing plate, 4-check assembly, 41-baffle, 42-abutment ring, 43-connecting column, 44-limiting head, 45-support rod, 46-spring, 47-limiting ring, 5-connecting device, 51-large end connector, 52-connecting cavity, 53-small end connector, 54-sealing plug. DETAILED DESCRIPTION

[0027] The following will be combined with the embodiments to clearly and completely describe the technical solution of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model.

[0028] See also Figure 1-Figure 5 , the utility model provides a technical solution:

[0029] like Figure 1-Figure 5As shown, a dosing device for a water plant and a sewage plant comprises a main pipe 2, a connecting pipe 3 and a dosing pipe assembly, wherein the connecting pipe 3 is in communication with the main pipe 2, the dosing pipe assembly extends into the main pipe 2 through the connecting pipe 3, the dosing pipe assembly comprises a plurality of branch pipes 11 of the same size, the plurality of branch pipes 11 are fixed in a plum blossom shape, a non-return assembly 4 is arranged in the branch pipe 11, the agent is introduced from one end of the branch pipe 11 and falls on the top of the non-return assembly 4; a connecting device 5 is arranged on the top of the dosing pipe assembly, one end of the connecting device 5 is detachably connected to the dosing pipe assembly, and the other end of the connecting device 5 is connected to an air pump, and the air pump drives the non-return assembly 4 to open by pumping air.

[0030] Through the above technical solution, when the connection between the connecting pipe 3 and the main pipe 2 is completed, the dosing pipe assembly is inserted into the main pipe 2 through the connecting pipe 3, and the dosing pipe assembly is fixed to the connecting pipe 3. Figure 2 As shown, the dosing pipe assembly is composed of multiple branch pipes 11 arranged in a plum blossom shape. One agent is added through each branch pipe 11 to avoid reactions between different agents. At the same time, suitable branch pipe 11 materials can be selected according to the properties of each agent to avoid the problem of pipeline corrosion caused by adding different agents to a single dosing pipe.

[0031] like Figure 1 As shown, the anti-return component 4 is located in the branch pipe 11 and above the main pipe 2. The medicine dropped from above the branch pipe 11 will fall above the anti-return component 4 and will not fall into the main pipe 2 immediately. Therefore, a certain amount of medicine can be set in advance to be accumulated above the anti-return component 4. At the same time, the anti-return component 4 can prevent water vapor from entering the top of the anti-return component 4, which can ensure the dryness of the branch pipe 11 above the anti-return component 4 and ensure that the medicine above the anti-return component 4 will not dissolve and deteriorate.

[0032] After the medicine is added, the connecting device 5 is connected to the medicine adding pipe assembly and the air pump respectively. Through the connecting device 5, the air pump can pump air to all the branch pipes 11 at the same time. When the air pump increases the pumping pressure, the gas will push the check assembly 4 to open. At this time, the medicine will fall into the main pipe 2 through the opened gap and mix with the water flow until all the medicine is pumped into the main pipe 2 and stops.

[0033] Furthermore, the anti-return assembly 4 includes a baffle 41, a connecting column 43, an abutment ring 42 and a support rod 45, the connecting column 43 is located in the middle of the baffle 41, the abutment ring 42 is fixed on the inner wall of the branch pipe 11, the baffle 41 is located on the side of the abutment ring 42 close to the main pipe 2, the diameter of the baffle 41 is larger than the inner diameter of the abutment ring 42 and smaller than the inner diameter of the branch pipe 11, the support rod 45 is located on the side of the abutment ring 42 away from the main pipe 2 and is fixed to the inner wall of the branch pipe 11, a limiting ring 47 for the connecting column 43 to pass through is provided in the middle of the support rod 45, the inner diameter of the limiting ring 47 is adapted to the diameter of the connecting column 43, a spring 46 is provided between the support rod 45 and the baffle 41, one end of the spring 46 is fixedly connected to the baffle 41, and the other end of the spring 46 is fixed to the limiting ring 47.

[0034] Through the above technical solution, under normal conditions, the spring 46 pulls the baffle 41 and the support rod 45, and the baffle 41 abuts against one side of the abutting ring 42 to maintain a seal, and the elastic force of the spring 46 can ensure that when a certain amount of medicine falls on the baffle 41, the baffle 41 still abuts against the abutting ring 42. When the air pump pumps air, the gas will drive the baffle 41 to move toward the main pipe 2, and then the baffle 41 overcomes the elastic force of the spring 46 and a gap is formed with the abutting ring 42, and the medicine can fall into the main pipe 2 through the gap.

[0035] Furthermore, a limiting head 44 is provided on the connecting column 43 at a side of the limiting ring 47 away from the main pipe 2 , and a size of the limiting head 44 is larger than an inner diameter of the limiting ring 47 .

[0036] Through the above technical solution, the limit head 44 can prevent the connection column 43 from being separated from the limit ring 47, thereby preventing the baffle 41 from being blown out when the pumped air pressure is too high.

[0037] Furthermore, a side of the baffle 41 close to the support rod 45 is a conical surface, and a side of the abutment ring 42 close to the support rod 45 is also a conical surface.

[0038] Through the above technical solution, when an opening appears between the baffle 41 and the abutment ring 42 , the medicine will slide down the inclined surface onto the baffle 41 through the conical surface of the abutment ring 42 , and the conical surface on the baffle 41 also facilitates the medicine to slide down into the main pipe 2 .

[0039] Furthermore, the connecting device 5 includes a large-end connector 51, a connecting cavity 52 and a small-end connector 53, the large-end connector 51 is located on one side of the connecting cavity 52, the large-end connector 51 is adapted to the air pipe size of the air pump, the outer diameter of the small-end connector 53 is adapted to the inner diameter of the branch pipe 11, the small-end connector 53 is plugged into the branch pipe 11, and a plurality of the small-end connectors 53 are arranged in a plum blossom shape on one side of the connecting cavity 52 away from the large-end connector 51, and the position of each of the small-end connectors 53 corresponds to each of the branch pipes 11.

[0040] Through the above technical solution, the number and position of the small-end connector 53 and the branch pipe 11 correspond one to one, so the small-end connector 53 can be easily inserted into the branch pipe 11. After the small-end connector 53 is inserted, the large-end connector 51 is connected to the air pump, and the air pumped in by the air pump enters the branch pipe 11 along the large-end connector 51, the connecting cavity 52 and the small-end connector 53.

[0041] Furthermore, the small end connector 53 is provided with an internal thread, the small end connector 53 is provided with a sealing plug 54, the sealing plug 54 is provided with an external thread, and the sealing plug 54 is threadedly connected to the small end connector 53.

[0042] Through the above technical solution, when medicine is stored in part of the branch pipe 11 but is not needed, a sealing plug 54 is added to the corresponding small-end connector 53, and the gas pumped in by the air pump will not enter the corresponding branch pipe 11.

[0043] Furthermore, a solenoid valve may be provided in the small end connector 53, and the entry of gas may be controlled by opening and closing the solenoid valve, so that the stored medicine may be automatically delivered to the main pipe 2 after a set time, thereby further reducing manpower and improving efficiency.

[0044] Furthermore, the connecting pipe 3 is welded and fixed to the main pipe 2 , and two flanges 31 are provided on the side of the connecting pipe 3 away from the main pipe 2 , a wing plate 32 is provided between the two flanges 31 , and the wing plate 32 is fixed by the two flanges 31 , and the wing plate 32 is fixedly connected to the branch pipe 11 .

[0045] Through the above technical solution, the wing plate 32 is clamped by two flanges 31, and then the wing plate 32 is fixed to the branch pipe 11, thereby achieving the fixation of the branch pipe 11 and the connecting pipe 3. The connecting pipe 3 is made of steel pipe, the branch pipe 11 can be made of UPVC pipe, and the wing plate 32 can be made of PVC board.

[0046] Furthermore, one end of the branch pipe 11 extending into the main pipe 2 is a bevel structure, and the bevel of the branch pipe 11 is back-pressure-arranged with the fluid in the main pipe 2 .

[0047] With the above technical solution, the bevel of the branch pipe 11 faces away from the water flow direction. After the reagent enters the main pipe 2 from the branch pipe 11, it just flows along the water flow and mixes with the raw water in the pipe to produce a physical and chemical reaction. The bevel adopts a 60-degree bevel angle.

[0048] The above is only a preferred embodiment of the utility model. It should be understood that the utility model is not limited to the form disclosed herein, and should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be modified within the scope of the concept described herein through the above teachings or the technology or knowledge of the relevant field. The changes and modifications made by those skilled in the art do not deviate from the spirit and scope of the utility model, and should be protected by the claims attached to the utility model.

Claims

1. A dosing device for a water plant or a sewage plant, comprising a main pipe (2), a connecting pipe (3) and a dosing pipe assembly, wherein the connecting pipe (3) is connected to the main pipe (2), and the dosing pipe assembly passes through the connecting pipe (3) and extends into the main pipe (2), characterized in that: The dosing pipe assembly comprises a plurality of branch pipes (11) of the same size and specification, wherein the plurality of branch pipes (11) are fixed in a plum blossom shape. A non-return component (4) is provided in the branch pipe (11), and the medicine is injected from one end of the branch pipe (11) and falls on the top of the non-return component (4); A connecting device (5) is provided on the top of the dosing pipe assembly, one end of the connecting device (5) is detachably connected to the dosing pipe assembly, and the other end of the connecting device (5) is connected to an air pump, and the air pump drives the non-return assembly (4) to open by pumping air.

2. The dosing device for water plants and sewage plants according to claim 1 is characterized in that: The anti-return assembly (4) comprises a baffle (41), a connecting column (43), an abutment ring (42) and a support rod (45); the connecting column (43) is located in the middle of the baffle (41); the abutment ring (42) is fixed on the inner wall of the branch pipe (11); the baffle (41) is located on a side of the abutment ring (42) close to the main pipe (2); the diameter of the baffle (41) is larger than the inner diameter of the abutment ring (42) and smaller than the inner diameter of the branch pipe (11); the support rod (45) is located on the inner wall of the abutment ring (42) and the inner wall of the branch pipe (11); A connecting ring (42) is located away from one side of the main pipe (2) and is fixed to the inner wall of the branch pipe (11). A limiting ring (47) for the connecting column (43) to pass through is provided in the middle of the support rod (45). The inner diameter of the limiting ring (47) is matched with the diameter of the connecting column (43). A spring (46) is provided between the support rod (45) and the baffle (41). One end of the spring (46) is fixedly connected to the baffle (41), and the other end of the spring (46) is fixed to the limiting ring (47).

3. The dosing device for water plants and sewage plants according to claim 2 is characterized in that: The connection column (43) is provided with a limiting head (44) on a side of the limiting ring (47) away from the main pipe (2), and the size of the limiting head (44) is larger than the inner diameter of the limiting ring (47).

4. The dosing device for water plants and sewage plants according to claim 2 is characterized in that: The side of the baffle (41) close to the support rod (45) is a conical surface, and the side of the abutment ring (42) close to the support rod (45) is also a conical surface.

5. The dosing device for water plants and sewage plants according to claim 1 is characterized in that: The connecting device (5) comprises a large-end connecting head (51), a connecting cavity (52) and a small-end connecting head (53); the large-end connecting head (51) is located at one side of the connecting cavity (52); the large-end connecting head (51) is adapted to the size of the air pipe of the air pump; the outer diameter of the small-end connecting head (53) is adapted to the inner diameter of the branch pipe (11); the small-end connecting head (53) is plugged into the branch pipe (11); a plurality of the small-end connecting heads (53) are arranged in a plum blossom shape at one side of the connecting cavity (52) away from the large-end connecting head (51); the position of each of the small-end connecting heads (53) corresponds to each of the branch pipes (11).

6. The dosing device for water plants and sewage plants according to claim 5, characterized in that: The small end connector (53) is provided with an internal thread, the small end connector (53) is provided with a sealing plug (54), the sealing plug (54) is provided with an external thread, and the sealing plug (54) is threadedly connected to the small end connector (53).

7. The dosing device for water plants and sewage plants according to claim 1, characterized in that: The connecting pipe (3) is fixed to the main pipe (2) by welding. Two flanges (31) are provided on a side of the connecting pipe (3) away from the main pipe (2). A wing plate (32) is provided between the two flanges (31). The wing plate (32) is fixed by the two flanges (31). The wing plate (32) is fixedly connected to the branch pipe (11).

8. The dosing device for water plants and sewage plants according to claim 1, characterized in that: One end of the branch pipe (11) extending into the main pipe (2) is a bevel structure, and the bevel of the branch pipe (11) is arranged to form a back pressure with the fluid in the main pipe (2).

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