CN115487518B - Electronic grade hydrofluoric acid production device and production method thereof - Google Patents

Abstract

The invention discloses an electronic-grade hydrofluoric acid production device and a production method thereof, wherein the electronic-grade hydrofluoric acid production device comprises a production device body, the production device body comprises a base, a production box body and a high-purity water storage box, the production box body is arranged on the base, a cavity structure is arranged in the production box body, a first cavity, a second cavity, a third cavity and a fourth cavity are formed in the production box body, a motor cover is arranged in the third cavity, and a first motor is arranged in the motor cover. The beneficial effects of the invention are as follows: compact structure, lighten workman's working strength, improve gas-liquid mixing effect, improve hydrofluoric acid's production efficiency.

Description

Electronic grade hydrofluoric acid production device and production method thereof

Technical Field

The invention relates to the technical field of hydrofluoric acid, in particular to an electronic grade hydrofluoric acid production device and a production method thereof.

Background

Hydrofluoric acid is an aqueous solution of hydrogen fluoride gas, is a clear, colorless, fuming, corrosive liquid, and has a severe pungent odor. Hydrofluoric acid is a weak acid, has extremely strong corrosiveness, and can strongly corrode metals, glass and objects containing silicon. Such as inhalation of vapors or contact with the skin, can cause burns that are difficult to heal. Laboratory is generally prepared from fluorite (calcium fluoride as main component) and concentrated sulfuric acid, and is sealed in plastic bottle and stored in shade.

However, the existing production method can produce and prepare electronic grade hydrofluoric acid, but there are a plurality of defects: 1. when the existing raw materials are steamed, the existing technology directly mixes and heats through heating or stirring screen plates, but the bottom and stirring effects are different due to the difference of the raw material concentrations of different concentrations, so that the raw materials can be burnt under the condition of certain temperature when being heated unevenly. 2. When the existing raw materials generate steam, the raw materials are often arranged above the next working procedure, so that the discharge holes and the bottom plate are easy to be decomposed in long-time use, and the service life of the production device is influenced. 3. In the purification process of the existing hydrofluoric acid, the temperature change is fast, so that floccules are easy to generate with impurities, and the purification efficiency is reduced while the mesh plate is blocked.

Based on the above technical drawbacks, there is a need for an electronic grade hydrofluoric acid production device and a production method thereof.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provide the electronic-grade hydrofluoric acid production device and the production method thereof, which have compact structure, reduce the working strength of workers, improve the gas-liquid mixing effect and improve the production efficiency of hydrofluoric acid.

The aim of the invention is achieved by the following technical scheme: the electronic-grade hydrofluoric acid production device comprises a production device body, wherein the production device body comprises a base, a production box body and a high-purity water storage box, the production box body is arranged on the base, a cavity structure is arranged in the production box body, a first cavity, a second cavity, a third cavity and a fourth cavity are formed in the production box body, a motor cover is arranged in the third cavity, and a first motor is arranged in the motor cover;

be equipped with supporting panel on the lateral wall of second cavity, and be equipped with electric telescopic handle on the supporting panel, and electric telescopic handle includes fixed section and telescopic link, the fixed section sets up on supporting panel, the telescopic link runs through the lateral wall of second cavity, be equipped with gas-liquid mixing subassembly on the inside of first cavity, gas-liquid mixing subassembly includes roof one, be equipped with the toper baffle between first cavity and the second cavity, and be equipped with discharging pipe one on the middle part of toper baffle, second cavity and third cavity are equipped with baffle one, be equipped with baffle two between third cavity and the fourth cavity, be equipped with agitating unit on the inside of fourth cavity, be equipped with heating device on the bottom and the lateral wall of fourth cavity, and be equipped with heating resistor wire on the inside of bottom heating device.

In the electronic grade hydrofluoric acid production device, a heating device on the side wall of the fourth cavity is a heating pipeline, the heating pipeline comprises an annular pipeline and a vertical pipeline, the heating pipeline is communicated with the heating device at the bottom, the heating pipeline is a hot good conductor, a rubber supporting pad is arranged on the base, a discharging pipe II and a discharging pipe III are arranged on the side wall of the fourth cavity, a closed cavity I is arranged on the top plate I, and an exhaust branch pipe I, an exhaust branch pipe II, an exhaust branch pipe III and an exhaust branch pipe IV are arranged above the closed cavity I.

In the electronic-grade hydrofluoric acid production device, the first exhaust branch pipe, the second exhaust branch pipe, the third exhaust branch pipe and the fourth exhaust branch pipe penetrate through the first closed cavity, one ends of the first exhaust branch pipe, the second exhaust branch pipe, the third exhaust branch pipe and the fourth exhaust branch pipe penetrate through the first closed cavity, the first air inlet branch pipe is arranged at the other end of the first exhaust branch pipe, the first connecting pipe and the second connecting pipe are arranged among the second discharging pipe, the third discharging pipe and the first air inlet branch pipe, and the second discharging pipe and the third discharging pipe are provided with switch valves.

In the electronic-grade hydrofluoric acid production device, a glass observation window is arranged on the side wall of the high-purity water storage box; the middle part of roof one is equipped with L shape inlet tube, L shape inlet tube is equipped with vertical section one and horizontal section one, vertical section one and horizontal section one be integrated into one piece, and vertical section one is through roof one to the port is located the inside of airtight cavity one, horizontal section is through the lateral wall of first cavity, the top of high purity water storage box is equipped with the water pump, and is equipped with the connecting pipe three between the delivery port of water pump and the horizontal section one.

In the electronic-grade hydrofluoric acid production device, the first connecting pipe and the second connecting pipe are respectively provided with a switch valve and an air pump, the bottom of the second partition board is of an inclined structure, the bottom of the second partition board is provided with a temperature sensor, an output shaft of the first motor penetrates through the second partition board, the output shaft of the first motor is provided with a stirring device, the stirring device comprises a first stirring transverse board and a second stirring transverse board, the first stirring transverse board is arranged below the second stirring transverse board, the first stirring transverse board is provided with a through hole, the lower part of the first stirring transverse board is of a conical structure, and the second stirring transverse board is at least provided with 2 stirring transverse boards.

In the electronic grade hydrofluoric acid production device, the upper part and the lower part of the stirring cross rod II are triangular inclined planes, and arc-shaped grooves are formed in two sides of each triangular inclined plane; the annular pipeline is provided with an annular pipeline I, an annular pipeline II, an annular pipeline III, an annular pipeline IV and an annular pipeline V; the vertical pipeline is provided with a first vertical pipeline, a second vertical pipeline, a third vertical pipeline, a fourth vertical pipeline, a fifth vertical pipeline and a sixth vertical pipeline, and the first vertical pipeline, the second vertical pipeline, the third vertical pipeline, the fourth vertical pipeline, the fifth vertical pipeline and the sixth vertical pipeline are arranged between two adjacent annular pipelines.

In the electronic grade hydrofluoric acid production device, a first fixed screen plate is arranged in the second cavity, a first filter hole is formed in the first fixed screen plate, a first movable plate is arranged on the first fixed screen plate, one end of the first movable plate is arranged on the telescopic rod, the first movable plate and the first fixed screen plate are in fit arrangement, a second filter hole is formed in the first movable plate, and a strip-shaped groove is formed in the bottom of the first movable plate.

In the electronic grade hydrofluoric acid production device, the strip-shaped groove is provided with the first groove section and the second groove section, the first groove section and the second groove section are tightly connected, the first groove section is internally provided with the roller strips, the second groove section is a conical bulge section, the roller strips are at least provided with 7 strips, and each roller strip is at least provided with 3 rollers.

In the electronic grade hydrofluoric acid production device, the ground of the roller protrudes from the first movable plate by 0.5mm, the bottommost surface of the roller is flush with the bottom of the conical protruding section, and the diameter of the second filter hole is larger than that of the first filter hole; a fifth discharging pipe is arranged at the bottom of the second cavity, and a switch valve is arranged on the fifth discharging pipe; an arc-shaped partition plate is arranged in the first closed cavity, a through hole is formed below the arc-shaped partition plate, a water outlet pipe is arranged on the top of the first closed cavity, an arc-shaped water outlet plate is arranged on the end portion of the water outlet pipe, and a plurality of water outlet holes are formed in the arc-shaped water outlet plate.

A method for producing an electronic grade hydrofluoric acid production device, comprising the steps of:

s1, a production method of electronic grade hydrofluoric acid, which specifically comprises the following steps:

s11, firstly, the prepared raw materials are put into a fourth cavity, a stirring device and a heating device are arranged in the fourth cavity, the heating device comprises an annular pipe and a vertical pipe which are arranged on the side wall, and uniform heating is realized under the action of the annular pipe and the vertical pipe;

s12, after the inside of the fourth cavity is heated to a certain temperature, the generated steam can enter the inside of the first closed cavity under the action of the first connecting pipe and the second connecting pipe, and after the first closed cavity is mixed, high-purity water can be dropped to the conical partition plate below through the through holes on the side wall of the top plate;

s13, after discharging, purifying the raw materials under the action of the first movable plate and the first fixed plate.

The invention has the following advantages:

1. the production device body comprises a base, a production box body and a high-purity water storage box, wherein the production box body and the high-purity water storage box are arranged on the base, a cavity structure is arranged in the production box body, a first cavity, a second cavity, a third cavity and a fourth cavity are arranged in the production box body, the first cavity, the second cavity, the third cavity and the fourth cavity are sequentially arranged from top to bottom, steam generated by heating raw materials in the fourth cavity can ensure the steam heating effect, a motor cover is arranged in the third cavity, and a first motor is arranged in the motor cover, so that the service life of the motor can be ensured.

2. According to the invention, the supporting panel is arranged on the outer side wall of the second cavity, the electric telescopic rod is arranged on the supporting panel and comprises the fixed section and the telescopic rod, the fixed section is arranged on the supporting panel, the telescopic rod penetrates through the side wall of the second cavity, the first moving plate is driven to move left and right under the action of the telescopic rod, the gas-liquid mixing assembly is arranged in the first cavity and comprises a first top plate, through holes are formed in the side of the first top plate, so that gas and high-purity water are fully dissolved, and compared with the traditional opposite mixing dissolution, the dissolution efficiency of the device is higher.

3. The heating device on the side wall of the fourth cavity is a heating pipeline, the inside of the heating pipeline is of a cavity structure, after heat is generated by the heating resistance wire on the bottom, heat conduction and heat transfer can be performed through the heating pipeline, the heating pipeline comprises an annular pipeline and a vertical pipeline, the heating pipeline is communicated with the heating device on the bottom, the heating pipeline is a good hot conductor, a rubber supporting pad is arranged on a base, a discharging pipe II and a discharging pipe III are arranged on the side wall of the fourth cavity, a first closed cavity is arranged on a top plate, an exhaust branch pipe I, an exhaust branch pipe II, an exhaust branch pipe III and an exhaust branch pipe IV are arranged above the first closed cavity, and the arrangement of the exhaust branch pipe I, the exhaust branch pipe II, the exhaust branch pipe III and the exhaust branch pipe IV ensures convenient circulation of air flow.

Drawings

FIG. 1 is a schematic diagram of the structure of the present invention;

FIG. 2 is a schematic diagram of a first moving plate according to the present invention;

FIG. 3 is a schematic view of a second separator according to the present invention;

FIG. 4 is a partial schematic view of an annular duct according to the present invention;

FIG. 5 is a schematic view of a second stirring rail in the present invention;

FIG. 6 is a schematic view of an exhaust manifold according to the present invention;

FIG. 7 is an enlarged schematic view of a portion of FIG. 1 at A;

FIG. 8 is a schematic cross-sectional view at B-B in FIG. 1;

fig. 9 is a partially enlarged schematic view at D in fig. 2.

In the drawing, a production device body 1, a base 2, a production box 3, a high purity water storage box 4, a first cavity 5, a second cavity 6, a third cavity 7, a fourth cavity 8, a motor cover 9, a first motor 10, a support panel 11, a fixed section 12, a telescopic rod 13, a conical partition 15, a first discharge pipe 16, a first partition 17, a second partition 18, a stirring device 19, a heating device 20, a heating resistance wire 21, a second discharge pipe 22, a third discharge pipe 23, a first closed cavity 24, a first exhaust branch 25, a second exhaust branch 26, a third exhaust branch 27, a fourth exhaust branch 28, a first intake branch 29, a first connection pipe 30, a second connection pipe 31, a first vertical section 32, a first horizontal section 33, a water pump 34, a third connection pipe 35, an air pump 36, a stirring cross plate 37, a stirring cross plate 38, an arc groove 39, an annular pipe 40, an annular pipe 41, a first vertical pipe 42, a second vertical pipe 43, a third vertical pipe 44, a fixed screen 45, a first filter hole 46, a moving plate 47, a second filter hole 48, a groove 49, a first groove 50, a second groove 50, a fifth groove 53, a fifth groove 54, a water outlet pipe 54, and an arc-shaped through hole 54.

Detailed Description

The invention is further described below with reference to the accompanying drawings, the scope of the invention not being limited to the following:

as shown in fig. 1-9, an electronic grade hydrofluoric acid production device comprises a production device body 1, wherein the production device body 1 comprises a base 2, a production box body 3 and a high purity water storage box 4, wherein the production box body 3 is arranged on the base 2, a cavity structure is arranged in the production box body 3, a first cavity 5, a second cavity 6, a third cavity 7 and a fourth cavity 8 are arranged in the production box body 3, a motor cover 9 is arranged in the third cavity 7, and a motor I10 is arranged in the motor cover 9;

be equipped with supporting panel 11 on the lateral wall of second cavity 6, and be equipped with electric telescopic handle on the supporting panel 11, and electric telescopic handle includes fixed section 12 and telescopic link 13, fixed section 12 and PLC controller (PLC is common siemens control system, and be prior art, this is not repeated one by one), make telescopic link 13 can carry out the removal about, fixed section 12 sets up on supporting panel 11, telescopic link 13 runs through the lateral wall of second cavity 6, be equipped with gas-liquid mixing element on the inside of first cavity 5, gas-liquid mixing element includes roof one 14, be equipped with toper baffle 15 between first cavity 5 and the second cavity 6, and be equipped with discharging pipe one 16 on the middle part of toper baffle 15, second cavity 6 and third cavity 7 are equipped with baffle one 17, be equipped with baffle two 18 between third cavity 7 and the fourth cavity 8, be equipped with agitating unit 19 on the inside of fourth cavity 8, be equipped with heating device 20 on the bottom and the lateral wall of fourth cavity 8, and be equipped with heating resistor 21 on the inside of bottom heating device 20.

The heating device 20 on the side wall of the fourth cavity 8 is a heating pipeline, the heating pipeline comprises an annular pipeline and a vertical pipeline, the heating pipeline is communicated with the heating device at the bottom, the heating pipeline is a hot good conductor, a rubber supporting pad is arranged on the base 2, a discharging pipe II 22 and a discharging pipe III 23 are arranged on the side wall of the fourth cavity 8, a sealed cavity I24 is arranged on the top plate I14, the mutual matching of the exhaust branch pipes inserted into the sealed cavity I24 enables the gas and the high-purity water to be fully dissolved, the dissolution efficiency of the gas is guaranteed, an exhaust branch pipe I25, an exhaust branch pipe II 26, an exhaust branch pipe III 27 and an exhaust branch pipe IV 28 are arranged above the sealed cavity I24, and the flow rate of the gas is guaranteed.

The first exhaust branch pipe 25, the second exhaust branch pipe 26, the third exhaust branch pipe 27 and the fourth exhaust branch pipe 28 penetrate through the first sealed cavity 24, one ends of the first exhaust branch pipe 25, the second exhaust branch pipe 26, the third exhaust branch pipe 27 and the fourth exhaust branch pipe 28 penetrate through the first sealed cavity 24, the first air inlet branch pipe 29 is arranged at the other end, the first connecting pipe 30 and the second connecting pipe 31 are arranged among the second discharging pipe 22, the third discharging pipe 23 and the first air inlet branch pipe 29, and switching valves are arranged on the second discharging pipe 22 and the third discharging pipe 23.

A glass observation window is arranged on the side wall of the high purity water storage box 4, so that the observation can be conveniently carried out; an L-shaped water inlet pipe is arranged in the middle of the first top plate 14, the L-shaped water inlet pipe is provided with a first vertical section 32 and a first transverse section 33, the first vertical section 32 and the first transverse section 33 are integrally formed, the first vertical section 32 penetrates through the first top plate 14, a port is positioned in the first sealed cavity 24, the first transverse section 33 penetrates through the side wall of the first cavity 5, a water pump 34 is arranged above the high-purity water storage box 4, and a connecting pipe III 35 is arranged between a water outlet of the water pump 34 and the first transverse section 33.

The first connecting pipe 30 and the second connecting pipe 31 are respectively provided with a switch valve and an air pump 36, the bottom of the second partition 18 is of an inclined structure, the bottom of the second partition 18 is provided with a temperature sensor, an output shaft of the first motor 10 penetrates through the second partition 18, the output shaft of the first motor 10 is provided with a stirring device, the stirring device comprises a first stirring transverse plate 37 and a second stirring transverse plate 38, the first stirring transverse plate 37 is arranged below the second stirring transverse plate 38, the first stirring transverse plate 37 is provided with a through hole, the lower part of the first stirring transverse plate 37 is of a conical structure, and the second stirring transverse plate 38 is at least provided with 2 stirring transverse plates.

The upper part and the lower part of the stirring cross rod II 38 are triangular inclined planes, the triangular inclined planes are arranged for raw materials with different consistencies, arc-shaped grooves 39 are arranged on two sides of the triangular inclined planes, and the arc-shaped grooves 39 enable local flow velocity to be increased; the annular pipeline is provided with an annular pipeline I40, an annular pipeline II 41, an annular pipeline III, an annular pipeline IV and an annular pipeline V; the vertical pipeline is provided with a first vertical pipeline 42, a second vertical pipeline 43, a third vertical pipeline 44, a fourth vertical pipeline, a fifth vertical pipeline and a sixth vertical pipeline, the first vertical pipeline 42, the second vertical pipeline 43, the third vertical pipeline 44, the fourth vertical pipeline, the fifth vertical pipeline and the sixth vertical pipeline are arranged between two adjacent annular pipelines, and the arrangement of the pipelines enables heat to be transferred to each part of the fourth cavity 8.

The second cavity 6 is also internally provided with a first fixed screen plate 45, the first fixed screen plate 45 is provided with a first filter hole 46, the first fixed screen plate 45 is provided with a first movable plate 47, one end of the first movable plate 47 is arranged on the telescopic rod 13, the first right movable plate 47 and the first fixed screen plate 45 are arranged in a fitting manner, the first movable plate 47 is provided with a second filter hole 48, and the bottom of the first movable plate 47 is provided with a strip-shaped groove 49.

The strip-shaped groove is provided with a first groove section 50 and a second groove section 51, the first groove section 50 and the second groove section 51 are tightly connected, a roller strip 52 is arranged in the first groove section 50, the second groove section 51 is a conical bulge section, at least 7 roller strips 52 are arranged, and at least 3 rollers 53 are arranged on each roller strip 52.

The ground of the roller 53 protrudes out of the first movable plate by 0.5mm, the bottommost surface of the roller 53 is flush with the bottom of the conical protruding section, the diameter of the second filter hole 48 is larger than that of the first filter hole 46, and the first movable plate 47 moves left and right, so that flocculent substances can be rubbed between the second filter hole 48 and the first filter hole 46, the purification efficiency is improved, and the preparation effect is improved; a fifth discharging pipe 54 is arranged at the bottom of the second cavity 6, and a switch valve is arranged on the fifth discharging pipe 54; the inside of airtight cavity one 24 is equipped with arc division board 55, and the below of arc division board 55 is equipped with through-hole 56, and through-hole 56 and the corresponding setting of water inlet for when the velocity of flow of orifice is big, easily flow out with the velocity of flow direction of water with gas, has accelerated the efficiency that gas dissolves, is equipped with outlet pipe 57 on the top of airtight cavity one 24, and is equipped with arc play water board 58 on the tip of outlet pipe 57, and is equipped with a plurality of apopores on the arc play water board 58.

A method for producing an electronic grade hydrofluoric acid production device, comprising the steps of:

s1, a production method of electronic grade hydrofluoric acid, which specifically comprises the following steps:

s11, firstly, the prepared raw materials are put into the fourth cavity 8, a stirring device and a heating device are arranged in the fourth cavity 8, the heating device comprises an annular pipe and a vertical pipe which are arranged on the side wall, and uniform heating is realized under the action of the annular pipe and the vertical pipe;

s12, after the inside of the fourth cavity 8 is heated to a certain temperature, generated steam can enter the inside of the first closed cavity 24 under the action of the first connecting pipe 30 and the second connecting pipe 31, and after the first closed cavity 24 is mixed, high-purity water can be dripped to the conical partition plate 15 below through the through holes on the side wall of the first top plate 14;

s13, after discharging, purifying the raw materials under the action of the first movable plate 47 and the first fixed mesh plate 45.

Finally, it should be noted that: the foregoing description is only a preferred embodiment of the present invention, and the present invention is not limited thereto, but it is to be understood that modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art, although the present invention has been described in detail with reference to the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (2)

1. An electronic grade hydrofluoric acid apparatus for producing, characterized in that: the device comprises a production device body, wherein the production device body comprises a base, a production box body and a high-purity water storage box, the production box body is arranged on the base, a cavity structure is arranged in the production box body, a first cavity, a second cavity, a third cavity and a fourth cavity are formed in the production box body, a motor cover is arranged in the third cavity, and a first motor is arranged in the motor cover;

the gas-liquid mixing device comprises a first cavity, a second cavity, a third cavity, a fourth cavity, a stirring device, a heating resistor wire, a first discharging pipe, a second discharging pipe, a third discharging pipe, a fourth discharging pipe, a heating resistor wire, a first heating pipe and a second heating pipe, wherein the first heating pipe is arranged in the first cavity; the heating device on the side wall of the fourth cavity is a heating pipeline, the heating pipeline comprises an annular pipeline and a vertical pipeline, the heating pipeline is communicated with the heating device at the bottom, the heating pipeline is a good hot conductor, a rubber supporting pad is arranged on the base, a second discharging pipe and a third discharging pipe are arranged on the side wall of the fourth cavity, a first closed cavity is arranged on the top plate, and an exhaust branch pipe I, an exhaust branch pipe II, an exhaust branch pipe III and an exhaust branch pipe IV are arranged above the first closed cavity;

one ends of the first exhaust branch pipe, the second exhaust branch pipe, the third exhaust branch pipe and the fourth exhaust branch pipe penetrate through the first airtight cavity, an air inlet branch pipe is arranged at the other end of the first airtight cavity, a connecting pipe I and a connecting pipe II are arranged between the second discharging pipe, the third discharging pipe and the air inlet branch pipe I, and switching valves are arranged on the second discharging pipe and the third discharging pipe;

a glass observation window is arranged on the side wall of the high-purity water storage box; an L-shaped water inlet pipe is arranged in the middle of the first top plate, the L-shaped water inlet pipe is provided with a first vertical section and a first transverse section, the first vertical section and the first transverse section are integrally formed, the first vertical section penetrates through the first top plate, a port is positioned in the first airtight cavity, the transverse section penetrates through the side wall of the first cavity, a water pump is arranged above the high-purity water storage box, and a third connecting pipe is arranged between a water outlet of the water pump and the first transverse section;

the first connecting pipe and the second connecting pipe are both provided with a switch valve and an air pump, the bottom of the second partition board is of an inclined structure, the bottom of the second partition board is provided with a temperature sensor, an output shaft of the first motor penetrates through the second partition board, an output shaft of the first motor is provided with a stirring device, the stirring device comprises a stirring transverse board I and a stirring transverse board II, the stirring transverse board I is arranged below the stirring transverse board II, the stirring transverse board I is provided with a through hole, the lower part of the stirring transverse board I is of a conical structure, and the stirring transverse board II is at least provided with 2 stirring transverse boards;

the upper part and the lower part of the stirring cross rod II are triangular inclined planes, and arc-shaped grooves are formed in two sides of the triangular inclined planes; the annular pipeline is provided with an annular pipeline I, an annular pipeline II, an annular pipeline III, an annular pipeline IV and an annular pipeline V; the vertical pipeline is provided with a first vertical pipeline, a second vertical pipeline, a third vertical pipeline, a fourth vertical pipeline, a fifth vertical pipeline and a sixth vertical pipeline, and the first vertical pipeline, the second vertical pipeline, the third vertical pipeline, the fourth vertical pipeline, the fifth vertical pipeline and the sixth vertical pipeline are arranged between two adjacent annular pipelines;

the inside of the second cavity is also provided with a fixed screen plate I, the fixed screen plate I is provided with a filter hole I, the fixed screen plate I is provided with a movable plate I, one end of the movable plate I is arranged on the telescopic rod, the movable plate I and the fixed screen plate I are arranged in a fitting way, the movable plate I is provided with a filter hole II, and the bottom of the movable plate I is provided with a strip-shaped groove;

the strip-shaped groove is provided with a first groove section and a second groove section which are tightly connected, a roller strip is arranged in the first groove section, the second groove section is a conical bulge section, the roller strip is at least provided with 7 rollers, and each roller strip is at least provided with 3 rollers;

the bottom surface of the roller protrudes out of the first movable plate by 0.5mm, the bottommost surface of the roller is flush with the bottom of the conical protruding section, and the diameter of the second filter hole is larger than that of the first filter hole; a fifth discharging pipe is arranged at the bottom of the second cavity, and a switch valve is arranged on the fifth discharging pipe; an arc-shaped partition plate is arranged in the first closed cavity, a through hole is formed below the arc-shaped partition plate, a water outlet pipe is arranged on the top of the first closed cavity, an arc-shaped water outlet plate is arranged on the end portion of the water outlet pipe, and a plurality of water outlet holes are formed in the arc-shaped water outlet plate.

2. The method for producing an electronic grade hydrofluoric acid production device of claim 1, wherein: it comprises the following steps:

s1, a production method of electronic grade hydrofluoric acid, which specifically comprises the following steps:

s11, firstly, the prepared raw materials are put into a fourth cavity, a stirring device and a heating device are arranged in the fourth cavity, the heating device comprises an annular pipe and a vertical pipe which are arranged on the side wall, and uniform heating is realized under the action of the annular pipe and the vertical pipe;

s12, after the inside of the fourth cavity is heated to a certain temperature, the generated steam can enter the inside of the first closed cavity under the action of the first connecting pipe and the second connecting pipe, and after the first closed cavity is mixed, high-purity water can be dropped to the conical partition plate below through the through holes on the side wall of the top plate;

s13, after discharging, the raw materials are enabled to be under the action of the first movable plate and the first fixed plate, so that the purification efficiency is improved.

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