CN211328446U

CN211328446U - Liquid caustic soda filter equipment

Info

Publication number: CN211328446U
Application number: CN201921962701.8U
Authority: CN
Inventors: 唐润兵; 王永明; 熊利川
Original assignee: Panzhihua Steel Enterprises Xinyu Chemical Co ltd
Current assignee: Panzhihua Steel Enterprises Xinyu Chemical Co ltd
Priority date: 2019-11-13
Filing date: 2019-11-13
Publication date: 2020-08-25
Anticipated expiration: 2029-11-13

Abstract

The utility model relates to a liquid caustic soda filter equipment belongs to filtration pump technical field. The utility model discloses a there is the rose box of closed inner chamber, rose box upper portion has the rose box feed inlet, and there is the rose box discharge gate bottom, has the filter limiting plate in the rose box, and two regions about the filter limiting plate divide into rose box inside, go up the region and link to each other with the rose box feed inlet, and lower region links to each other with the rose box discharge gate, installs the filter core on the filter limiting plate. The feed inlet of rose box is followed to liquid caustic soda gets into the last region of filter limiting plate in the rose box, because impurity in the liquid caustic soda can not see through the filter core to adsorbed on the filter core surface, after the liquid caustic soda sees through the filter core, gets into the lower region of the rose box limiting plate in the rose box, flows by the rose box discharge gate again, thereby can be with the effectual edulcoration of impurity in the liquid caustic soda.

Description

Liquid caustic soda filter equipment

Technical Field

The utility model relates to a liquid caustic soda filter equipment belongs to filtration pump technical field.

Background

In the process of chlorine alkali chemical production, liquid alkali is an important product. However, the concentration of the liquid caustic soda directly produced by the electrolytic cell is generally between 30 and 32 percent (mass percent), and the actually required concentration of the liquid caustic soda is generally higher, and is generally between 40 and 50 percent (mass percent). In order to increase the concentration of the liquid caustic, an evaporator is generally used. As the liquid caustic soda storage tank, the pipeline and the evaporator are made of stainless steel, nickel materials and other materials, the corrosion phenomenon can be inevitably generated along with the increase of the service time, so that the liquid caustic soda product contains black metal impurities. However, the actual requirement is high for the quality of the liquid caustic soda, and the existence of the black impurities affects the quality of the liquid caustic soda and often cannot meet the actual requirement.

In order to solve the problem, people design a filtering device to filter the alkali liquor and then use the alkali liquor. Chinese patent CN205867753U discloses a sodium hydroxide filter, including first storage tinning and second storage tank, second storage tank bottom is provided with the discharging pipe, first branch that discharging pipe was connected through the inlet pipe to first storage tank, first storage tank is through the second branch of pressing the return pipe to connect the discharging pipe, be provided with the pipe filter in the return pipe, second storage tank is provided with the heat preservation outward, second storage tank top still is provided with evacuation pipe and intake pipe, mainly be through inlet pipe and return pipe double-pipe setup, guarantee that impurity stops in the filter of pipeline, the mode of adopting the filter in the regular cleaning pipeline is gone on in order to guarantee filtration efficiency and quality. If the filter is damaged and the time for checking is not reached in the using process, the efficiency is low and unreliable, and the structure is complex and the disassembly and the assembly are inconvenient for the obtained filtrate which cannot be determined to be liquid caustic soda with qualified quality.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the technical problem that will solve is: provided is a liquid caustic soda filter device which can efficiently and reliably discharge impurities in liquid caustic soda.

For solving the technical problem the utility model discloses the technical scheme who adopts is: liquid caustic soda filter equipment, including the rose box that seals the inner chamber, there is the rose box feed inlet rose box upper portion, and there is the rose box discharge gate bottom, has the filter limiting plate in the rose box, and the filter limiting plate is two regions about dividing into rose box inside, and upper region links to each other with the rose box feed inlet, and lower region links to each other with the rose box discharge gate, installs the filter core on the filter limiting plate. The liquid caustic soda gets into the last region of the filter limiting plate in the rose box from the feed inlet of rose box, because impurity in the liquid caustic soda can not see through the filter core to adsorbed on the filter core surface, after the liquid caustic soda sees through the filter core, gets into the lower region of the rose box limiting plate in the rose box, flows by the rose box discharge gate again, thereby can be with the effectual edulcoration of impurity in the liquid caustic soda.

The utility model discloses still including the pump body, the pump body has pump discharge mouth and pump feed inlet, and the rose box feed inlet directly links to each other with the fastener for the pump discharge mouth, and whole liquid caustic soda filter equipment formula structure as an organic whole avoids increasing the pipeline and makes pump discharge mouth and rose box feed inlet link to each other to manufacturing cost can be practiced thrift to a certain extent. The whole liquid caustic soda filtering device adopts a structure that the filtering box is arranged above the pump body, so that the filtering box is convenient to clean, replace or maintain after being used for a period of time, and the integral device can occupy smaller space due to the adoption of the integral connection.

The utility model discloses in, the rose box includes rose box casing and rose box top cap, and the rose box top cap is in rose box casing upper end, and the rose box top cap adopts detachable the connection with the rose box casing, installs the filter core on the filter limiting plate of rose box inside, and the filter core adopts detachable the connection with the filter limiting plate, conveniently washs or maintains rose box inner structure in the in-service use.

The utility model discloses be equipped with rose box discharge gate valve behind pump feed inlet valve and the rose box discharge gate of being equipped with before the pump feed inlet, there is discharge valve at the rose box top, there is the blowoff valve rose box bottom. The pump feed inlet valve and the exhaust valve are opened, the filter box discharge port valve and the exhaust valve are closed, original air in the filter device is discharged from the exhaust valve, air in the filter device is discharged through the exhaust valve, and therefore the situation that when liquid caustic soda is filtered, air in the filter box and the liquid caustic soda are subjected to chemical reaction to form new impurities and damage the quality effect of the liquid caustic soda can be avoided, and the quality of the liquid caustic soda is improved.

And closing a power supply of the pump, a discharge port valve of the filter box and a feed port valve of the pump, opening an emptying valve and an exhaust valve, and discharging the liquid caustic soda in the filter box from the emptying valve by using air pressure so as to clean and maintain the interior of the filter box. Owing to all be equipped with the valve before the pump feed inlet behind the rose box discharge gate, so need not carry out the independent control with the pump body and rose box, liquid caustic soda input source and to the receiving arrangement split of the liquid caustic soda after filtering, use the utility model discloses the device can carry out better overall control at the during operation.

The utility model discloses in, the material of rose box casing and rose box top cap adopts alkali-resistant plastic materials, compares metal material's rose box casing and rose box top cap more light, and manufacturing cost is lower to can avoid appearing in the use because of the phenomenon of rose box casing or rose box top cap and liquid caustic soda corruption production new impurity.

Be equipped with the manometer on the rose box, after the air in the rose box was all discharged by discharge valve, can real-time detection rose box inside pressure condition according to the pressure value that the manometer shows to can judge that whether the unusual circumstances appears in the rose box inside. In general, liquid caustic soda permeates a filter element inside a filter box, impurities are accumulated on the surface of the filter element, so that the pressure inside the filter box is gradually increased, and experiments prove that the filtering device can normally operate when the pressure value is displayed at 0.12MPa-0.18 MPa. When the pressure value is displayed above 0.18MPa, the pressure value indicates that the interior of the filter box shell is abnormal, possibly, the impurities adsorbed on the surface of the filter element in the filter box are excessive, and the filter element in the filter box needs to be cleaned or replaced, and when the pressure value is displayed below 0.12MPa, the pump is abnormal possibly, and the pump needs to be checked whether the liquid caustic soda is input into the filter box or not. Therefore, through the utility model discloses can carry out real-time detection to the filtration state of liquid caustic soda to the problem that appears when timely solution is in actual filtration, thereby impurity in the high-efficient discharge liquid caustic soda reliably.

Drawings

FIG. 1 is a sectional view of the overall structure of the present invention;

the labels in the figure are: 1-pump body, 2-pump feed inlet, 3-pump feed inlet valve, 4-pump discharge outlet, 5-pump discharge outlet flange, 6-filter box shell, 7-filter box feed inlet, 8-filter box feed inlet flange, 9-filter limiting plate, 10-filter element, 11-screw cap, 12-filter box discharge outlet, 13-filter box discharge outlet valve, 14-filter box top cover, 15-slipknot bolt, 16-vent valve, 17-evacuation valve and 18-pressure gauge.

Detailed Description

The present invention will be further explained with reference to the drawings and the embodiments.

As shown in figure 1, the utility model discloses a rose box of closed inner chamber, there is rose box feed inlet 7 on rose box upper portion, and there is rose box discharge gate 12 bottom, has filter limiting plate 9 in the rose box, and filter limiting plate 9 is two regions about dividing into rose box inside, goes up the region and links to each other with rose box feed inlet 7, and lower region links to each other with rose box discharge gate 12, installs filter core 10 on the filter limiting plate. The liquid caustic soda gets into the last region of the filter limiting plate 9 in the rose box from the feed inlet 7 of rose box, because impurity in the liquid caustic soda can not see through filter core 10 to adsorbed on the filter core 10 surface, after the liquid caustic soda sees through filter core 10, gets into the lower region of the rose box limiting plate 9 in the rose box, flows out by rose box discharge gate 12 again.

The utility model discloses still including the pump body 1, pump body 1 has pump discharge mouth 4 and pump feed inlet 2, has pump discharge mouth flange 5 at pump discharge mouth 4 ends, has rose box feed inlet flange 8 at rose box feed inlet end, and when concrete implementation, the selection of the pump body 1 is unlimited, what select in this embodiment is the self priming pump of no bearing seal. The feed port 7 of the filter box is directly connected with the discharge port 4 of the pump by a fastener, so that the whole liquid caustic soda filter device is of an integrated structure with the filter box arranged above and the pump body 1 arranged below. In particular implementations, the fastener connection here can be in the following preferred manner: a rubber gasket is arranged between the filter box feed port 7 and the pump discharge port 4, and is threaded through a hole in the filter box feed port flange 8 and a hole in the pump discharge port flange 5 by bolts, and is locked by nuts on the other side of the bolts, so that the filter box feed port 7 and the pump discharge port 4 are fastened together. Of course, the attachment of the fasteners can also be done in the following preferred manner: an asbestos rubber gasket can be arranged between the filter box feed port 7 and the pump discharge port 4, and is screwed through a hole on the filter box feed port flange 8 and fastened in a threaded hole on the pump discharge port flange 5, or is screwed through a hole on the pump discharge port flange 5 and fastened in a threaded hole on the filter box feed port flange 8. The connection of the fastening elements here can also be advantageously as follows: an acid-resistant asbestos plate is arranged between the feed port 7 of the filter box and the discharge port 4 of the pump, studs penetrate through holes in the flange 8 of the feed port of the filter box and holes in the flange 5 of the discharge port of the pump, and nuts are respectively used for locking two ends of the studs from two sides of the flange 8 of the feed port of the filter box and the flange 5 of the discharge port of the pump, so that the feed port 7 of the filter box and the discharge port 4 of the pump are fastened together.

The utility model discloses in, the rose box includes rose box casing 6 and rose box top cap 14, and rose box top cap 14 adopts the demountable installation mode to be connected at rose box casing 6 upper end, rose box top cap 14 with rose box casing 6. The filter box shell 6 and the filter box top cover 14 are made of alkali-resistant plastic materials, and in order to facilitate the disassembly and assembly of the filter box top cover 14, the following preferred modes can be adopted: the filter box top cover 14 is connected with the filter box shell 6 through a slipknot bolt 15, a U-shaped groove is formed in the filter box top cover 14, the diameter of the U-shaped groove is slightly larger than the diameter of the slipknot bolt 15, a metal ring is sleeved on the outer side of the filter box shell 6 and penetrates through an eyelet of the slipknot bolt 15, the diameter of the metal ring is smaller than the diameter of the eyelet of the slipknot bolt 15, the slipknot bolt 15 can freely move on the metal ring, the other end of the slipknot bolt 15 passes through the U-shaped groove in the filter box top cover 14 and is locked by a nut, and the U-shaped grooves in the filter box top cover 14 are symmetrically distributed on the periphery of the filter box top cover 14. In addition, the connection mode of the filter box top cover 14 and the filter box shell 6 can adopt the following preferred mode: the filter box top cover 14 is connected with the filter box shell 6 through screws, through holes are formed in the filter box top cover 14, threaded holes are formed in the end face, which is coaxial with the through holes of the filter box top cover 14 and is in contact with the filter box top cover 14, of the filter box shell 6, the screws penetrate through the through holes of the filter box top cover 14 and are locked in the corresponding threaded holes in the filter box shell 6, and the through holes in the filter box top cover 14 are symmetrically distributed on the periphery of the filter box top cover 14, so that the filter box top cover 14 is fastened on the filter box shell 6.

As shown in figure 1, a filter limiting plate 9 is arranged in the filter box, a filter element 10 is arranged on the filter limiting plate 9, and the filter element 10 is detachably connected with the filter limiting plate 9. The utility model discloses can adopt following preferred mode, filter limiting plate 9 in filter core 10 and the rose box adopts threaded connection, and filter core 10 adopts the PP filter core, and both ends outside cloth has the screw thread about the PP filter core, opens threaded hole on filter limiting plate 9, screws up PP filter core lower extreme in the screw hole of filter limiting plate 9, makes the hole in the PP filter core lower extreme link to each other with filter limiting plate 9 lower region, screws up at the top of PP filter core with nut 11. In order to facilitate filtering, the filter element 10 of the present invention can also adopt a titanium rod filter element and a stainless steel filter element. For convenient the dismantlement, the utility model discloses a filter core 10 can also adopt following mode to be connected with filter limiting plate 9, there is a little boss filter core 10 and the one end of the contact of filter limiting plate 9, it has the through-hole to open on the filter limiting plate 9, the through-hole on the filter limiting plate 9 aligns with the hole of filter core 10, and install the rubber gasket between filter core 10 and filter limiting plate 9, respectively open 4 screw holes on filter core 10 boss and filter limiting plate 9, with 4 screw holes screw in on the boss of filter core 10, screw up in the screw hole in filter limiting plate 9.

There is pump feed inlet valve 3 before pump feed inlet 7, has rose box discharge gate valve 13 behind rose box discharge gate 12 the utility model discloses in, can adopt following preferred mode, pump feed inlet valve 3 and rose box discharge gate valve 13 adopt manual valve simultaneously, and pump feed inlet valve 3 and rose box discharge gate valve 13 can also select other valves certainly, like select pneumatic valve or electric valve simultaneously, also can separately select different valves.

The utility model discloses in, there is discharge valve 16 at the rose box top, and the rose box bottom is equipped with blowoff valve 17, has manometer 18 on the rose box. When the utility model works, the pump feed inlet valve 3 and the exhaust valve 16 are firstly opened, the filter box discharge outlet valve 13 and the exhaust valve 17 are closed, liquid alkali flows in from the pump feed inlet 2 due to pressure difference between the end of the pump feed inlet 2 and the inside of the filter box, enters the filter box feed inlet 7 from the pump discharge outlet 4 and then enters the filter box, the liquid alkali flows out from the exhaust valve 16 after the liquid alkali is filled in the filter box due to the closing of the exhaust valve 17 and the filter box discharge outlet valve 13, when the liquid alkali is filled in the filter box, the liquid alkali is discharged from the exhaust valve 16 without bubbles, and the numerical value of a pressure gauge 18 on the filter box is displayed at 0.15MPa, the exhaust valve 16 is closed, the filter box discharge outlet valve 13 is opened and is communicated with the power supply of the pump body 1, at the moment, the liquid alkali is sucked by the pump feed inlet 2 and discharged into the filter box feed inlet 7 from the pump discharge outlet 4 and enters, thereby adsorbed filter core 10 surface, and then filtered the impurity in the liquid caustic soda, the liquid caustic soda sees through filter core 10 and gets into the lower region of filter limiting plate 9, discharges by rose box discharge gate 12 again.

When the filter device is checked, the power supply of the pump body 1, the pump feed inlet valve 3 and the filter box discharge outlet valve 13 at the bottom of the filter box need to be closed, the emptying valve 17 at the bottom of the filter box and the exhaust valve 16 at the top of the filter box are opened, liquid caustic soda in the filter box is rapidly discharged from the emptying valve 17 by utilizing air pressure, after the liquid caustic soda in the filter box is emptied, the top cover 14 of the filter box is taken down, then the interior of the filter box is checked and maintained, or whether excessive impurities are adsorbed on the surface of the filter element 10 or the surface of the filter element is damaged is checked, and then the filter element 10 is cleaned or replaced.

Claims

1. Liquid caustic soda filter equipment, including the rose box that seals the inner chamber, its characterized in that:

the upper part of the filter box is provided with a filter box feed inlet (7), and the bottom of the filter box is provided with a filter box discharge outlet (12);

a filter limiting plate (9) is arranged in the filter box, the filter limiting plate (9) divides the interior of the filter box into an upper area and a lower area, the upper area is connected with a feed port (7) of the filter box, and the lower area is connected with a discharge port (12) of the filter box;

the filter limiting plate (9) is provided with a filter element (10).

2. The caustic soda liquid filtration apparatus of claim 1, wherein: the liquid caustic soda filter device further comprises a pump body (1), the pump body (1) is provided with a pump discharge port (4) and a pump feed port (2), the filter box feed port (7) is directly connected with the pump discharge port (4) through a fastening piece, and the liquid caustic soda filter device is an integrated structure with the filter box arranged on the upper portion and the pump body (1) arranged on the lower portion.

3. The caustic soda liquid filtration apparatus of claim 1, wherein: the filter box comprises a filter box shell (6) and a filter box top cover (14), wherein the filter box top cover (14) is arranged at the upper end of the filter box shell (6), and the filter box top cover (14) is connected with the filter box shell (6) in a detachable installation mode.

4. The caustic soda liquid filtration apparatus of claim 3, wherein: the filter box top cover (14) is connected with the filter box shell (6) by adopting a slipknot bolt (15).

5. The caustic soda liquid filtration apparatus of claim 1, wherein: the filter element (10) is detachably connected with the filter limiting plate (9).

6. The caustic soda liquid filtration apparatus of claim 5, wherein: the filter element (10) is in threaded connection with the filter limiting plate (9), the filter element (10) is a PP filter element, and a screw cap (11) is arranged at the top of the PP filter element.

7. The caustic soda liquid filtration apparatus of claim 1, wherein: the bottom of the filter tank is provided with an exhaust valve (17).

8. The caustic soda liquid filtration apparatus of claim 2, wherein: a pump feed inlet valve (3) is arranged in front of the pump feed inlet (2).

9. The caustic soda liquid filtration apparatus of claim 1, wherein: an exhaust valve (16) is arranged at the top of the filter box, and a valve (13) at the discharge port of the filter box is arranged behind a discharge port (12) of the filter box.

10. The liquid caustic soda filter apparatus of any one of claims 1 to 9, wherein: the filter box is provided with a pressure gauge (18) for detecting the internal pressure of the filter box.