Automatic alkali adding device for sewage treatment neutralization tank

Abstract

The utility model discloses an automatic alkali adding device for a sewage treatment neutralizing tank, which relates to the technical field of sewage treatment, and is characterized in that through the arrangement of a flow divider and a follower, when alkali liquor flows out of an alkali adding pipeline, the flowing alkali liquor firstly passes through the follower, the follower drives the flow divider to rotate, and then the alkali liquor enters the flow divider, so that the alkali liquor flows out of the alkali adding pipeline; the alkali liquor is uniformly distributed in the plurality of long grooves of the flow divider, finally flows out through the flow dividing holes in the flow divider and enters the sewage in the neutralization tank, so that the alkali liquor is more uniformly distributed when entering the neutralization tank, and the sewage in the neutralization tank and the alkali liquor are subjected to uniform neutralization reaction in the alkali adding process, so that the effect of uniformly adding the alkali is achieved; the large deviation of the pH value of the sewage in the neutralization tank caused by non-uniform distribution of the alkali liquor is avoided, and the pH value error during alkali addition is reduced or eliminated, so that a good use effect is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of sewage treatment, in particular to an automatic alkali adding device for a sewage treatment neutralization tank. Background Technique

[0002] The pH detection of the existing alkali adding device for sewage treatment neutralization tanks often adopts the method of manual detection, which has problems such as low detection efficiency, poor representativeness of detection sampling, and low detection accuracy. It cannot control the alkali adding flow rate in real time according to the change of the pH value in the neutralization tank, thus affecting the neutralization effect.

[0003] In order to solve the above problems, a Chinese patent with the publication number of "CN206069489U" discloses an automatic alkali adding device for a sewage treatment neutralization tank, including a neutralization tank and an automatic alkali adding device. The automatic alkali adding device includes a liquid alkali tank, a switching valve, a regulating valve, a controller, and a PH sensor. The liquid alkali tank, the switching valve, the regulating valve, and the neutralization tank are sequentially connected through pipelines. A PH sensor is arranged in the neutralization tank, the PH sensor is electrically connected to the controller, and the controller is electrically connected to the regulating valve. The automatic alkali adding device for the sewage treatment neutralization tank described in the utility model is reasonably designed and has a simple structure. It effectively reduces the labor intensity, improves the work efficiency, and ensures the neutralization effect.

[0004] In the prior art, although the purpose of automatic alkali addition is achieved, when adding alkali liquid into the neutralization tank, the alkali liquid cannot be dispersed. Therefore, it is easy to cause the liquid pH value at the outlet of the pipeline to be inconsistent with the pH value at a place far from the pipeline, resulting in a large error when adding alkali. Therefore, an automatic alkali adding device for a sewage treatment neutralization tank is needed. Content of the Utility Model

[0005] The purpose of this application is to provide an automatic alkali adding device for a sewage treatment neutralization tank to solve the problems raised in the above background technique.

[0006] To achieve the above purpose, this application provides the following technical solution: an automatic alkali adding device for a sewage treatment neutralization tank, including a neutralization tank and a liquid alkali tank. The liquid alkali tank transports alkali liquid into the neutralization tank through an alkali adding pipeline. A switching valve and a regulating valve are sequentially installed on the alkali adding pipeline. The regulating valve is electrically connected to a controller, and the controller is electrically connected to a PH sensor installed in the neutralization tank;

[0007] The outlet end of the alkali adding pipeline located in the neutralization tank is rotatably connected to a flow divider. The flow divider is composed of a plurality of long grooves circumferentially distributed along the axis of the alkali adding pipeline. Diversion holes are opened at the bottoms of the plurality of long grooves of the flow divider, and the upper end of the flow divider is communicated with the alkali adding pipeline;

[0008] A follower is installed in the alkali adding pipeline to drive the flow divider to rotate as the alkali liquid flows.

[0009] Preferably, a lower liquid pipe is fixed in the middle of the diverter, and the upper end of the lower liquid pipe rotatably penetrates through the lower end of the alkali adding pipe and communicates with the alkali adding pipe;

[0010] A plurality of liquid outlet holes are formed in the lower end of the lower liquid pipe, and the plurality of liquid outlet holes respectively correspond to the plurality of long grooves of the diverter one by one.

[0011] Preferably, the follower includes a follower impeller, the follower impeller is located in the alkali adding pipe, and the follower impeller rotates with the flow of the alkali liquid in the alkali adding pipe;

[0012] The lower end of the follower impeller drives the lower liquid pipe and the diverter to rotate through a transmission member.

[0013] Preferably, the transmission member includes a connecting shaft, the connecting shaft is fixed to the lower end of the follower impeller, a fixing rod is fixed to the lower end of the connecting shaft, the fixing rod is of a long rod structure, and the end of the fixing rod is fixed to the inner side wall of the lower liquid pipe.

[0014] Preferably, the bottom of the long groove of the diverter is provided with an inclined portion, and the horizontal height of the end of the inclined portion close to the lower liquid pipe is higher than the horizontal height of the end of the inclined portion far from the lower liquid pipe.

[0015] Preferably, a sealing ring is fixed to the inner bottom wall of the alkali adding pipe, and the sealing ring is fixedly sleeved on the outer side of the lower liquid pipe and seals the connection between the lower liquid pipe and the alkali adding pipe.

[0016] In summary, the technical effects and advantages of the present utility model are as follows:

[0017] 1. In the present utility model, through the arrangement of the diverter and the follower, when the alkali liquid flows out of the alkali adding pipe, the flowing alkali liquid first passes through the follower, and the follower drives the diverter to rotate. Then, the alkali liquid enters the diverter and is evenly distributed in the plurality of long grooves of the diverter. Finally, it flows out through the diversion holes on the diverter and enters the sewage in the neutralization tank, so that the alkali liquid is more evenly distributed when entering the neutralization tank, and the sewage in the neutralization tank and the alkali liquid undergo a uniform neutralization reaction during the alkali adding process, thereby achieving the effect of uniform alkali addition, avoiding large deviations in the pH value of the sewage in the neutralization tank caused by uneven distribution of the alkali liquid, reducing or eliminating the pH error during alkali addition, and thus obtaining good use effects.

[0018] 2. In the present utility model, through the arrangement of the follower impeller, when the alkali liquid flows from the alkali adding pipe into the lower liquid pipe, the alkali liquid first passes through the follower impeller, causing the follower impeller to rotate. When the follower impeller rotates downward, it drives the lower liquid pipe to rotate through the connecting shaft and the fixing rod, thereby driving the diverter to rotate, realizing driving the diverter to rotate, which is beneficial to the diverter evenly dispersing and adding the alkali liquid into the neutralization tank. Description of the Drawings

[0019] To more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the attached drawings required for the description of the embodiments or the prior art. Obviously, the attached drawings in the following description are only some embodiments of the present application. For those skilled in the art, without creative efforts, other attached drawings can also be obtained based on these drawings.

[0020] Figure 1 It is a schematic diagram of the overall structure in this embodiment;

[0021] Figure 2 It is a cross-sectional view of the local caustic adding pipeline and the diverter in this embodiment;

[0022] Figure 3 It is a schematic three-dimensional structure diagram of the diverter in this embodiment.

[0023] In the figure: 1, neutralization tank; 2, caustic solution tank; 3, caustic adding pipeline; 31, sealing ring; 4, on-off valve; 5, regulating valve; 6, controller; 7, PH sensor; 8, diverter; 801, diversion hole; 802, inclined part; 81, liquid discharge pipe; 811, liquid outlet hole; 9, follow-up impeller; 91, connecting shaft; 92, fixed rod. Specific embodiments

[0024] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the attached drawings in the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, rather than all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the protection scope of the present utility model.

[0025] Embodiment: Refer to Figures 1-3 A sewage treatment neutralization tank automatic caustic adding device as shown, which includes a neutralization tank 1 and a caustic solution tank 2. The caustic solution tank 2 transports caustic solution into the neutralization tank 1 through a caustic adding pipeline 3. An on-off valve 4 and a regulating valve 5 are sequentially installed on the caustic adding pipeline 3. The regulating valve 5 is electrically connected to a controller 6, and the controller 6 is electrically connected to a PH sensor 7 installed in the neutralization tank 1;

[0026] The outlet end of the caustic adding pipeline 3 located in the neutralization tank 1 is rotatably connected to a diverter 8. The diverter 8 is composed of a plurality of long grooves circumferentially distributed along the axis of the caustic adding pipeline 3. Diversion holes 801 are opened at the bottoms of the plurality of long grooves of the diverter 8, and the upper end of the diverter 8 is communicated with the caustic adding pipeline 3;

[0027] A follow-up member for driving the diverter 8 to rotate along with the flow of the caustic solution is installed in the caustic adding pipeline 3.

[0028] Based on the above structure, when the lye flows out from the lye adding pipeline 3, the flowing lye first passes through the follower, and the follower drives the diverter 8 to rotate. Then the lye enters the diverter 8 and is evenly distributed in the multiple long grooves of the diverter 8. Finally, it flows out through the diversion holes 801 on the diverter 8 and enters the sewage in the neutralization tank 1, so that the lye is more evenly distributed when entering the neutralization tank 1. During the lye adding process, the sewage in the neutralization tank 1 and the lye undergo a uniform neutralization reaction, thus achieving the effect of uniform lye addition, avoiding large deviations in the pH value of the sewage in the neutralization tank 1 caused by uneven lye distribution, reducing or eliminating the pH error during lye addition, and thus obtaining good use effects.

[0029] Further, a lower liquid pipe 81 is fixed in the middle of the diverter 8. The upper end of the lower liquid pipe 81 rotatably penetrates through the lower end of the lye adding pipeline 3 and is communicated with the lye adding pipeline 3;

[0030] A plurality of liquid outlet holes 811 are opened at the lower end of the lower liquid pipe 81, and the plurality of liquid outlet holes 811 respectively correspond to the plurality of long grooves of the diverter 8 one by one.

[0031] The lye in the lye adding pipeline 3 first enters the lower liquid pipe 81 and respectively flows into the plurality of long grooves of the diverter 8 through the plurality of liquid outlet holes 811 at the lower end of the lower liquid pipe 81, so as to realize the uniform distribution of the lye in the diverter 8. Further, the lye can flow out evenly through the diversion holes 801 along with the rotation of the diverter 8, so as to achieve the purpose of uniformly adding lye into the neutralization tank 1.

[0032] Further, the follower includes a follower impeller 9. The follower impeller 9 is located in the lye adding pipeline 3, and the follower impeller 9 rotates with the flow of the lye in the lye adding pipeline 3;

[0033] The lower end of the follower impeller 9 drives the lower liquid pipe 81 and the diverter 8 to rotate through a transmission member;

[0034] The transmission member includes a connecting shaft 91. The connecting shaft 91 is fixed to the lower end of the follower impeller 9. A fixing rod 92 is fixed to the lower end of the connecting shaft 91. The fixing rod 92 is of a long rod structure, and the end of the fixing rod 92 is fixed to the inner side wall of the lower liquid pipe 81.

[0035] When the lye flows from the lye adding pipeline 3 into the lower liquid pipe 81, the lye first passes through the follower impeller 9, causing the follower impeller 9 to rotate. When the follower impeller 9 rotates downward, it drives the lower liquid pipe 81 to rotate through the connecting shaft 91 and the fixing rod 92, thereby driving the diverter 8 to rotate, realizing driving the diverter 8 to rotate, which is beneficial for the diverter 8 to evenly disperse and add the lye into the neutralization tank 1.

[0036] Further, the bottom of the long groove of the diverter 8 is provided with an inclined portion 802, and the horizontal height of the end of the inclined portion 802 close to the lower liquid pipe 81 is higher than the horizontal height of the end of the inclined portion 802 far from the lower liquid pipe 81;

[0037] Through the setting of the inclined part 802, the caustic solution entering the shunt 8 can flow more smoothly towards the end away from the lower liquid pipe 81, so that the caustic solution is distributed more quickly and evenly, which is beneficial to further improving the uniformity of the caustic solution dispersion and has a better use effect.

[0038] Furthermore, a sealing ring 31 is fixed on the inner bottom wall of the alkali adding pipe 3. The sealing ring 31 is fixedly sleeved outside the lower liquid pipe 81 and seals the connection between the lower liquid pipe 81 and the alkali adding pipe 3. The setting of the sealing ring 31 can ensure the sealing performance of the connection between the lower liquid pipe 81 and the alkali adding pipe 3, prevent the caustic solution from leaking out from the connection between the lower liquid pipe 81 and the alkali adding pipe 3, and thus avoid the pollution caused by the outflow of the caustic solution or the erosion of the outside of the device.

[0039] The working principle of the present utility model: During daily use, the PH sensor 7 detects the PH value in the neutralization tank 1 in real time. When the PH value is inconsistent with the preset value, the controller 6 controls the regulating valve 5 to open. The regulating valve 5 adjusts the flow in the alkali adding pipe 3, thereby controlling the speed of the caustic solution entering the neutralization tank 1 from the caustic solution tank 2 to achieve automatic alkali addition; during this process, when the caustic solution flows out from the alkali adding pipe 3, the caustic solution first passes through the follower impeller 9, causing the follower impeller 9 to rotate. When the follower impeller 9 rotates downward, it drives the lower liquid pipe 81 to rotate through the connecting shaft 91 and the fixed rod 92, thereby driving the shunt 8 to rotate, realizing the driving of the shunt 8 to rotate. Then the caustic solution enters the lower liquid pipe 81 and flows into the multiple long grooves of the shunt 8 respectively through the multiple liquid outlet holes 811 at the lower end of the lower liquid pipe 81, and is evenly distributed in the multiple long grooves of the shunt 8. Finally, it flows out through the shunt holes 801 on the shunt 8 and enters the sewage in the neutralization tank 1, so that the caustic solution is more evenly distributed when entering the neutralization tank 1, and the sewage in the neutralization tank 1 and the caustic solution undergo a uniform neutralization reaction during the alkali addition process, thereby achieving the effect of uniform alkali addition, avoiding large deviations in the acidity and alkalinity of the sewage in the neutralization tank 1 caused by uneven distribution of the caustic solution, reducing or eliminating the acidity and alkalinity error during alkali addition, and thus obtaining a good use effect.

[0040] Finally, it should be noted that the above are only the preferred embodiments of the present utility model and are not used to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included in the protection scope of the present utility model.

Claims

1. An automatic alkali adding device for a sewage treatment neutralization tank, comprising a neutralization tank (1) and an alkali solution tank (2), wherein the alkali solution tank (2) transports alkali solution into the neutralization tank (1) through an alkali adding pipeline (3), wherein the alkali adding pipeline (3) is sequentially provided with a switch valve (4) and a regulating valve (5), wherein the regulating valve (5) is electrically connected to a controller (6), and the controller (6) is electrically connected to a pH sensor (7) installed in the neutralization tank (1), characterized in that: The outlet end of the alkali adding pipeline (3) located in the neutralization tank (1) is rotatably connected to a diverter (8), the diverter (8) is composed of a plurality of long grooves distributed along the circumference of the axis of the alkali adding pipeline (3), the bottoms of the plurality of long grooves of the diverter (8) are all provided with diverter holes (801), and the upper end of the diverter (8) is in communication with the alkali adding pipeline (3); A follower is installed in the alkali adding pipeline (3) and drives the diverter (8) to rotate as the alkali solution flows.

2. The automatic alkali adding device for a sewage treatment neutralization tank according to claim 1, characterized in that: A lower liquid pipe (81) is fixed in the middle of the flow divider (8), and the upper end of the lower liquid pipe (81) rotates to penetrate the lower end of the alkali adding pipeline (3) and communicates with the alkali adding pipeline (3); A plurality of liquid outlet holes (811) are provided at the lower end of the lower liquid pipe (81), and the plurality of liquid outlet holes (811) correspond one-to-one to the plurality of long grooves of the diverter (8).

3. The automatic alkali adding device for a sewage treatment neutralization tank according to claim 2, characterized in that: The follower comprises a follower impeller (9), the follower impeller (9) is located in the alkali adding pipeline (3), and the follower impeller (9) rotates along with the flow of alkali solution in the alkali adding pipeline (3); The lower end of the follower impeller (9) drives the lower liquid pipe (81) and the diverter (8) to rotate through a transmission member.

4. The automatic alkali adding device for a sewage treatment neutralization tank according to claim 3, characterized in that: The transmission member comprises a connecting shaft (91), the connecting shaft (91) being fixed to the lower end of the follower impeller (9), a fixing rod (92) being fixed to the lower end of the connecting shaft (91), the fixing rod (92) being a long rod structure, the end of the fixing rod (92) being fixed to the inner wall of the lower liquid pipe (81).

5. The automatic alkali adding device for a sewage treatment neutralization tank according to claim 2, characterized in that: The bottom of the long groove of the diverter (8) is arranged as an inclined inclined portion (802), and the horizontal height of one end of the inclined portion (802) close to the downcomer (81) is higher than the horizontal height of one end of the inclined portion (802) away from the downcomer (81).

6. The automatic alkali adding device for a sewage treatment neutralization tank according to claim 2, characterized in that: A sealing ring (31) is fixed on the inner bottom wall of the alkali adding pipeline (3), and the sealing ring (31) is fixedly sleeved on the outer side of the lower liquid pipe (81) and seals the connection between the lower liquid pipe (81) and the alkali adding pipeline (3).

Images