CN216537852U

CN216537852U - Automatic sodium hydroxide diluting and batching device

Info

Publication number: CN216537852U
Application number: CN202120553148.3U
Authority: CN
Inventors: 许丛保; 王同同; 潘小敏; 唐叶东
Original assignee: Zhejiang Shanying Paper Industry Co Ltd
Current assignee: Zhejiang Shanying Paper Industry Co Ltd
Priority date: 2021-03-17
Filing date: 2021-03-17
Publication date: 2022-05-17
Anticipated expiration: 2031-03-17

Abstract

The utility model provides an automatic dilution batching device for sodium hydroxide, which solves the problems that the dissolution dilution concentration of the sodium hydroxide is difficult to control and the like, and comprises a dilution tank body, wherein the dilution tank body is internally provided with a dilution cavity, the upper end of the dilution tank body is provided with a liquid inlet for inputting sodium hydroxide stock solution and a water inlet for inputting dilution water, the lower end of the dilution tank body is provided with a liquid outlet, the water inlet and the liquid outlet are respectively externally connected with a water inlet pipe, a dilution water valve is arranged between the water inlet pipe and the water inlet pipe, a flushing water valve is arranged between the liquid outlet and the water inlet pipe, the water inlet pipe is connected with a water storage tank body, the liquid inlet is connected with a liquid storage tank body through a liquid inlet pipe, a stock solution pump is arranged between the liquid inlet pipe and the liquid storage tank body, a liquid outlet pump is arranged at the liquid outlet, and liquid level sensors are arranged in the water storage tank body, the liquid storage tank body and the dilution tank body. The utility model has the advantages of convenient concentration control, good safety and the like.

Description

Automatic sodium hydroxide diluting and batching device

Technical Field

The utility model belongs to the technical field of batching devices, and particularly relates to an automatic sodium hydroxide diluting batching device.

Background

In the paper industry, a raw material containing cellulose is first treated chemically by cooking it with chemicals to make pulp. Then, the sodium hydroxide solution is used as cooking liquor to remove lignin, carbohydrates, resins and the like in the raw materials and neutralize organic acids in the raw materials, so that the cellulose is separated. At present, a batching device in the papermaking industry generally adopts a manual mode to control the amount of sodium hydroxide and dilution water. The existing sodium hydroxide dosing device is manually configured, the concentration of a sodium hydroxide diluent is not uniform, the randomness is high, sometimes the concentration is low, and sometimes the concentration is high. In addition, due to human negligence, the overflow phenomenon of the sodium hydroxide storage tank often appears, which causes waste and potential safety hazard.

In order to solve the defects of the prior art, people have long searched for and put forward various solutions. For example, the chinese patent document discloses a top self-overflow device [201820555154.0], which comprises an overflow pipe, an access pipe, a liquid feeding pipe, and a leveling seat, wherein a plurality of overflow holes are arranged in parallel on the top of the overflow pipe, so that the solution in the overflow pipe overflows outwards along the overflow holes, a fine filtering net is arranged inside the access pipe, and a cavity for collecting impurities is formed between the lower part of the fine filtering net and the bottom of the access pipe, so that the solution is filtered by the fine filtering net and then enters the overflow pipe.

The solution overflow problem is solved to a certain extent by the scheme, but the scheme still has a plurality of defects, for example, the dilution of sodium hydroxide is not easy to control, the concentration randomness is high, and the like.

Disclosure of Invention

The utility model aims to solve the problems and provides an automatic sodium hydroxide diluting and batching device which is reasonable in design and easy to control the dilution concentration.

In order to achieve the purpose, the utility model adopts the following technical scheme: this automatic dosing unit that dilutes of sodium hydroxide, including the inside dilution jar body that is the dilution chamber, dilution jar body upper end is provided with the inlet that is used for inputing the sodium hydroxide stoste and inputs the water inlet of dilution water, dilution jar body lower extreme is provided with the liquid outlet, water inlet and external inlet tube of liquid outlet respectively, be provided with the dilution water valve between water inlet and the inlet tube, be provided with the washing water valve between liquid outlet and the inlet tube, the inlet tube is connected with the water storage tank body, the inlet passes through feed liquor pipe and the stock solution jar body is connected and is provided with the stoste pump between, liquid outlet department is provided with out the liquid pump, the water storage tank body, the stock solution jar body and the internal level sensor that is provided with of dilution jar. The water storage tank body, the liquid storage tank body and the liquid level sensors in the liquid storage tank body are adopted to control the stock solution and the dilution water amount, and the residual sodium hydroxide in the pipeline is cleaned during dilution, so that the dilution concentration accuracy is improved, and the solution concentration can be conveniently and timely adjusted.

In the automatic sodium hydroxide diluting and batching device, the outer side of the diluting tank body is provided with an overflow port communicated with the internal diluting cavity, the diluting tank body is internally provided with an overflow groove which surrounds along the circumferential direction, and the overflow port is opposite to the overflow groove. The overflow port discharges redundant solution, and potential safety hazard caused by excessive solution in the dilution cavity is avoided.

In the above-mentioned automatic sodium hydroxide diluting and blending device, an overflow valve is arranged at the outlet of the overflow port. The overflow valve is matched with the liquid level sensor to realize automatic liquid drainage, so that waste caused by human negligence is prevented.

In foretell automatic dosing unit that dilutes of sodium hydroxide, dilute jar body upper end and be provided with the washing mouth relative with inside dilution chamber, the washing mouth is provided with the scavenging pump through scavenge pipe and water storage tank body intercommunication and between, and washing mouth exit is provided with the ejector. The cleaning port jet flow fully dissolves the sodium hydroxide adhered to the inner wall of the diluting tank body, so that the solution quality is ensured, and the waste of the sodium hydroxide is reduced.

In foretell automatic dosing unit that dilutes of sodium hydroxide, the ejector is including fixing the fixed pipe in washing mouthful below exit, and fixed pipe port department rotates and is connected with the efflux dish, and efflux dish side is opened has a plurality of efflux holes that incline to set up in the radial direction of efflux dish, and the efflux hole communicates with fixed pipe.

In foretell automatic dosing unit that dilutes of sodium hydroxide, dilute the chamber top and set up a plurality of and the relative dilution dish of inlet and water inlet, dilute the dish and stack the setting and open respectively and have a plurality of guiding holes that misplace the setting. The dilution tray ensures that the stock solution and the dilution water are thoroughly mixed.

In the above-mentioned automatic diluting and blending device for sodium hydroxide, the junction of the liquid outlet and the water inlet pipe is connected by a three-way pipe, and the three-way pipe is equipped with a flowmeter. The three-way pipe realizes the intercommunication of liquid outlet, play liquid pump and inlet tube, and the flowmeter monitoring solution discharge amount that is equipped with.

In the above-mentioned automatic sodium hydroxide diluting and blending device, an alkali concentration meter sensor is arranged in the diluting tank. The alkali concentration meter sensor detects the dissolution amount of sodium hydroxide after the solution is diluted, and improves the solution concentration ratio precision by matching with a liquid level sensor and a flowmeter.

In the above-mentioned automatic dosing unit that dilutes of sodium hydroxide, dilute jar body bottom upper end and be hemispherical and the lower extreme is for leaking hopper-shaped, the liquid outlet is fixed in the bottom of diluting jar body, dilutes jar body lower extreme and installs the support body. Dilute jar body bottom and be hourglass hopper-shaped, conveniently derive inside liquid, support the support body and will dilute jar body lifting, supply the liquid outlet to normally derive.

In the above-mentioned automatic dosing unit that dilutes of sodium hydroxide, dilute the jar body and include main jar and with the lid of main jar upper end confined, lid and main jar seam crossing are sealed by the rubber pad. The dilution tank body can be opened and closed, and the cover body can be opened after long-time use, so that the internal dilution cavity can be cleaned.

Compared with the prior art, the utility model has the advantages that: the water storage tank body, the liquid storage tank body and the dilution tank body are matched with a liquid level sensor in the interior to accurately match the dilution of the sodium hydroxide, so that the concentration error of the solution is reduced; the cleaning port is matched with the flushing water valve, so that residual sodium hydroxide in the tank body and the pipeline is reduced, and waste is reduced; each valve body and pump body cooperation realize the automatic ratio of solution, have reduced intensity of labour and have improved the operational safety nature.

Drawings

FIG. 1 is a schematic view of the diluting tank structure of the present invention;

FIG. 2 is a structural cross-sectional view of a dilution tank of the present invention;

FIG. 3 is a block diagram of the architecture of the present invention;

in the figure, a dilution tank body 1, a dilution cavity 11, a liquid inlet 12, a water inlet 13, a liquid outlet 14, a three-way pipe 15, a support frame body 16, a main tank 17, a cover body 18, a rubber gasket 19, a water inlet pipe 2, a dilution water valve 21, a flushing water valve 22, a water storage tank body 3, a liquid inlet pipe 4, a raw liquid pump 41, a liquid outlet pump 42, a liquid storage tank body 5, an overflow port 6, an overflow groove 61, an overflow valve 62, a cleaning port 7, a cleaning pipe 71, a cleaning pump 72, an ejector 73, a fixed pipe 74, a jet disc 75, a jet hole 76, a dilution disc 8 and a diversion hole 81.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

As shown in fig. 1-3, the automatic sodium hydroxide diluting and batching device comprises a diluting tank body 1 with a diluting cavity 11 inside, wherein a liquid inlet 12 for inputting sodium hydroxide stock solution and a water inlet 13 for inputting diluting water are arranged at the upper end of the diluting tank body 1, a liquid outlet 14 is arranged at the lower end of the diluting tank body 1, the water inlet 13 and the liquid outlet 14 are respectively and externally connected with a water inlet pipe 2, a diluting water valve 21 is arranged between the water inlet 13 and the water inlet pipe 2, a flushing water valve 22 is arranged between the liquid outlet 14 and the water inlet pipe 2, the water inlet pipe 2 is connected with a water storage tank body 3, the liquid inlet 12 is connected with a liquid storage tank body 5 through a liquid inlet pipe 4, and a stock solution pump 41 is arranged between the liquid inlet and the liquid storage tank body 5, a liquid outlet pump 42 is arranged at the position of the liquid outlet 14, and liquid level sensors are arranged in the water storage tank body 3, the liquid storage tank body 5 and the diluting tank body 1. During dilution, quantitative sodium hydroxide stock solution and dilution water are respectively input into the water storage tank body 3 and the liquid storage tank body 5, the input quantity is controlled through the liquid level sensor, the dilution water valve 21 and the stock solution pump 41, the dilution tank body 1 achieves the mixing proportion of the solution, and when the solution is output through the liquid outlet 14, the flushing water valve 22 quantitatively flushes the liquid outlet 14, so that the residual sodium hydroxide in a pipeline is fully dissolved, and errors during manual proportioning dissolution are reduced.

Specifically, an overflow port 6 communicated with the internal dilution cavity 11 is formed in the outer side of the dilution tank body 1, an overflow groove 61 surrounding along the circumferential direction is formed in the dilution tank body 1, and the overflow port 6 is opposite to the overflow groove 61. The overflow port 6 discharges the redundant solution in the dilution tank body 1, and the overflow groove 61 is matched with the overflow port 6 to limit the height of the liquid level, so that the potential safety hazard caused by excessive solution in the dilution cavity 11 is reduced.

Further, an overflow valve 62 is provided at an outlet of the overflow port 6. The overflow valve 62 controls the opening and closing of the overflow port 6, and is controlled by a circuit together with the liquid outlet pump 42, the stock pump 41, the dilution water valve 21 and the flushing water valve 22, so that the automatic solution proportioning is realized.

Further, the upper end of the dilution tank body 1 is provided with a cleaning port 7 opposite to the internal dilution cavity 11, the cleaning port 7 is communicated with the water storage tank body 3 through a cleaning pipe 71, a cleaning pump 72 is arranged between the cleaning port 7 and the water storage tank body 3, and an ejector 73 is arranged at the outlet of the cleaning port 7. The cleaning port 7 is arranged at the top of the diluting tank body 1 and is matched with the diluting water valve 21 and the flushing water valve 22 to realize multi-path water inlet, so that the solution proportioning speed is accelerated, and the residues in the tank body and a pipeline are reduced.

Furthermore, the jet device 73 comprises a fixed pipe 74 fixed at an outlet below the cleaning opening 7, a jet disc 75 is rotatably connected at the port of the fixed pipe 74, a plurality of jet holes 76 which are obliquely arranged relative to the radial direction of the jet disc 75 are formed in the side surface of the jet disc 75, and the jet holes 76 are communicated with the fixed pipe 74. The jet holes 76 on the side of the jet disc 75 generate recoil force when jetting water flow, and drive the jet disc 75 to rotate, thereby uniformly washing the inside of the upper end of the dilution tank body 1.

In addition, a plurality of diluting trays 8 opposite to the liquid inlet 12 and the water inlet 13 are arranged above the diluting cavity 11, and the diluting trays 8 are stacked and are respectively provided with a plurality of staggered diversion holes 81. The dilution tray 8 ensures that the stock solution and the dilution water input from the liquid inlet 12 and the water inlet 13 leak downwards layer by layer, and the stock solution and the dilution water are fully mixed in the downward leakage process and the surface flowing process of the dilution tray 8.

Meanwhile, the joint of the liquid outlet 14 and the water inlet pipe 2 is connected through a three-way pipe 15, and the three-way pipe 15 is provided with a flowmeter. The flowmeter monitors the flow of the solution in the three-way pipe 15, and the liquid level sensor and the alkali concentration meter sensor are matched to accurately regulate and control the concentration of the solution.

An alkali concentration meter sensor is arranged in the dilution tank 1. The alkali concentration meter sensor detects the concentration of the solution in the dilution tank body 1, and compares the concentration with the input quantity of the sodium hydroxide solution and the dilution water, so that the concentration proportioning error is reduced.

Obviously, the upper end of the bottom of the diluting tank body 1 is hemispherical, the lower end is funnel-shaped, the liquid outlet 14 is fixed at the bottom of the diluting tank body 1, and the support frame body 16 is arranged at the lower end of the diluting tank body 1. The dome-shaped dilution tank body 1 has better pressure resistance, and can fully drain the solution by matching with the funnel-shaped lower bottom, thereby reducing the solution residue.

Preferably, the dilution tank 1 comprises a main tank 17 and a cover 18 for closing the upper end of the main tank 17, and the joint between the cover 18 and the main tank 17 is closed by a rubber gasket 19. After the main tank 17 and the cover 18 are closed, the acid-alkali corrosion resistant rubber gasket 19 improves the sealing performance of the joint, and the integral air tightness of the dilution tank body 1 is ensured.

In summary, the principle of the present embodiment is: during the dilution, the water storage tank body 3 and the liquid storage tank body 5 respectively input quantitative sodium hydroxide stock solution and dilution water, and through level sensor, dilution water valve 21 and stock solution pump 41 control input volume, the mixed ratio of solution is realized to the dilution tank body 1, when exporting through liquid outlet 14, washes water valve 22 ration and erodes liquid outlet 14, thereby guarantees that residual sodium hydroxide fully dissolves in the pipeline, error when reducing artifical ratio and dissolving.

The specific embodiments described herein are merely illustrative of the spirit of the utility model. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the utility model as defined in the appended claims.

Although the terms of the dilution tank 1, the dilution cavity 11, the liquid inlet 12, the water inlet 13, the liquid outlet 14, the three-way pipe 15, the support frame 16, the main tank 17, the cover 18, the rubber gasket 19, the water inlet pipe 2, the dilution water valve 21, the flush water valve 22, the water storage tank 3, the liquid inlet pipe 4, the raw liquid pump 41, the liquid outlet pump 42, the liquid storage tank 5, the overflow port 6, the overflow tank 61, the overflow valve 62, the cleaning port 7, the cleaning pipe 71, the cleaning pump 72, the ejector 73, the fixed pipe 74, the jet disc 75, the jet hole 76, the dilution disc 8, the diversion hole 81 and the like are used more frequently, the possibility of using other terms is not excluded. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed as being without limitation to any additional limitations that may be imposed by the spirit of the present invention.

Claims

1. The utility model provides an automatic dosing unit that dilutes of sodium hydroxide, is including the inside dilution jar body (1) that is dilution chamber (11), a serial communication port, dilution jar body (1) upper end be provided with inlet (12) that are used for inputing the sodium hydroxide stoste and input water inlet (13) of dilution water, dilution jar body (1) lower extreme be provided with liquid outlet (14), water inlet (13) and liquid outlet (14) external inlet tube (2) respectively, water inlet (13) and inlet tube (2) between be provided with dilution water valve (21), liquid outlet (14) and inlet tube (2) between be provided with washing water valve (22), inlet tube (2) be connected with the water storage tank body (3), inlet (12) be connected and between be provided with stoste pump (41) through feed liquor pipe (4) and the stock solution tank body (5), liquid outlet (14) department be provided with out liquid pump (42), water storage tank body (3), liquid storage tank body (5) and dilute the internal level sensor that is provided with of jar (1).

2. The automatic sodium hydroxide diluting and proportioning device according to claim 1, wherein an overflow port (6) communicated with the internal diluting cavity (11) is formed in the outer side of the diluting tank body (1), an overflow groove (61) circumferentially surrounding is formed in the diluting tank body (1), and the overflow port (6) is opposite to the overflow groove (61).

3. The automatic sodium hydroxide diluting and dispensing device as claimed in claim 2, wherein an overflow valve (62) is arranged at the outlet of the overflow port (6).

4. The automatic sodium hydroxide diluting and proportioning device according to claim 1, wherein a cleaning port (7) opposite to the internal diluting cavity (11) is arranged at the upper end of the diluting tank body (1), the cleaning port (7) is communicated with the water storage tank body (3) through a cleaning pipe (71) and a cleaning pump (72) is arranged between the cleaning port (7) and the water storage tank body, and an ejector (73) is arranged at the outlet of the cleaning port (7).

5. The automatic sodium hydroxide diluting and proportioning device according to claim 4, wherein the ejector (73) comprises a fixed pipe (74) fixed at an outlet below the cleaning port (7), a port of the fixed pipe (74) is rotatably connected with an ejection disc (75), a plurality of ejection holes (76) obliquely arranged relative to the radial direction of the ejection disc (75) are formed in the side surface of the ejection disc (75), and the ejection holes (76) are communicated with the fixed pipe (74).

6. The automatic sodium hydroxide diluting and proportioning device according to claim 1, wherein a plurality of diluting trays (8) opposite to the liquid inlet (12) and the water inlet (13) are arranged above the diluting cavity (11), and the diluting trays (8) are stacked and are respectively provided with a plurality of flow guide holes (81) which are arranged in a staggered manner.

7. The automatic sodium hydroxide diluting and proportioning device as claimed in claim 1, wherein the junction of the liquid outlet (14) and the water inlet pipe (2) is connected through a tee pipe (15), and the tee pipe (15) is equipped with a flow meter.

8. The automatic sodium hydroxide diluting and blending device according to claim 1, wherein an alkali concentration meter sensor is arranged inside the diluting tank body (1).

9. The automatic sodium hydroxide diluting and proportioning device according to claim 1, wherein the upper end of the bottom of the diluting tank body (1) is hemispherical, the lower end of the bottom of the diluting tank body is funnel-shaped, the liquid outlet (14) is fixed at the bottom of the diluting tank body (1), and a support frame body (16) is installed at the lower end of the diluting tank body (1).

10. The sodium hydroxide automatic dilution batching device according to claim 9, characterized in that said dilution tank body (1) comprises a main tank (17) and a cover body (18) for closing the upper end of the main tank (17), and the joint of the cover body (18) and the main tank (17) is closed by a rubber gasket (19).