A static mixer

Abstract

The application belongs to the technical field of chemical detection, and specifically relates to a static mixer, which comprises a positioning plate in a rectangular shape, two supports symmetrically arranged on the upper end surface of the positioning plate, and two mixing pipes oppositely arranged on the two supports. A sealing unit is arranged at the connecting position of the two mixing pipes, and a detection unit is arranged on the sealing unit. A pretreatment unit is arranged at the rear position of the upper end surface of the positioning plate to treat toxic gas. The application improves the air tightness of the connecting position of the mixing pipes through the joint cooperation of the positioning ring and the ring sleeve. Then, the gas in the ring sleeve is accurately and leaklessly detected through the separate control of the I-shaped pull rod and the lifting column, thereby improving the safety in the production process and avoiding the damage to the health of the operators caused by the gas leakage. The mixed gas is gradually introduced into a corresponding first treatment cylinder and a second treatment cylinder through a T-shaped connecting pipe through the interval opening of a first safety valve and a second safety valve for neutralization reaction.

Description

Technical Field

[0001] The invention belongs to the technical field of chemical detection, and particularly relates to a static mixer. Background Art

[0002] A static mixer is a highly efficient mixing device that uses a mixing unit fixed in a pipe to cause two or more fluids to be cut, sheared, rotated, and remixed. This allows the fluid to flow in the pipeline and impact various types of plate elements, increasing the velocity gradient of the fluid's laminar flow or forming turbulence. In turbulent flow, violent eddies are also generated in the cross-sectional direction, exerting strong shear forces on the fluid, thereby further dividing and mixing the fluid to achieve good dispersion and sufficient mixing between the fluids.

[0003] Existing static mixers generally introduce the gas or liquid to be mixed into the interior through an inlet, and then mix the fluids through an internal mixing unit. Due to industrial requirements, the types of fluids introduced into the static mixer are diverse. Some fluids are non-toxic, non-corrosive and non-explosive, but some fluids are highly toxic, corrosive and explosive, such as a mixture of chlorine and carbon monoxide. At the same time, static mixers are usually assembled by multiple pipes through flanges. Therefore, after the pipe connection position has been subjected to long-term vibration of the internal fluid and various complex forms of impact operations, the air tightness of the flange connection position gradually decreases until the internal toxic gas escapes, causing immeasurable impact on the environment, endangering the life and health of workers, and increasing the production accident rate. Summary of the Invention

[0004] To achieve the above-mentioned object, the present invention adopts the following technical solution: a static mixer, comprising a rectangular positioning plate, wherein two supports are symmetrically provided on the upper end surface of the positioning plate, and both supports are provided with mixing tubes facing each other, a sealing unit is commonly provided at the connection position of the two mixing tubes, and a detection unit is provided on the sealing unit, and a pre-treatment unit is provided at the rear side of the upper end surface of the positioning plate for treating toxic gases;

[0005] The sealing unit comprises:

[0006] Bolts are installed through the connecting ends of the two mixing tubes and are evenly distributed along the circumference of the mixing tubes;

[0007] A nut, threadedly mounted on the outer wall of the bolt shaft end;

[0008] An annular groove is provided in the middle of the outer wall of each mixing tube connection end;

[0009] A ring sleeve is movably mounted between two adjacent annular grooves, and the ring sleeve is composed of two semicircular rings that cooperate with each other. The outer wall of the ring sleeve is uniformly provided with four circular holes along its circumference;

[0010] There are two tight-fitting rings, which are movably and snugly mounted on the outer wall of the ring sleeve. The tight-fitting rings are composed of a rectangular segment, a semicircular ring segment and a shaft segment.

[0011] The gasket ring is installed on the outer wall of each ring sleeve and corresponds to the position of the circular hole one by one.

[0012] Preferably, the detection unit includes:

[0013] Cylindrical tubes are snap-fitted into each circular hole and assembled seamlessly with gasket rings;

[0014] An I-shaped tie rod is slidably mounted on the end of the cylindrical tube away from the axis of the mixing tube;

[0015] T-shaped plug, snap-fitted and installed on the end of the I-shaped tie rod close to the axis of the mixing tube;

[0016] The partition is fixedly installed on the side of the cylindrical tube close to the axis of the mixing tube;

[0017] The telescopic spring is sleeved on a section of the outer wall of the T-shaped plug with a smaller shaft diameter and is located on the side of the partition close to the axis of the mixing tube. At the same time, the two ends of the telescopic spring are respectively fixed to the partition and the T-shaped plug;

[0018] The rubber ring is fixedly installed on the outer wall of one end of the I-shaped tie rod and the T-shaped plug close to the mixing pipe, and fits tightly with the inner wall of the cylindrical pipe.

[0019] Preferably, the outer wall of the cylindrical tube away from the axis of the mixing tube is seamlessly connected to the convex tube through a sealing ring, and a retaining ring is installed inside the end of the convex tube close to the cylindrical tube. The retaining ring and the convex tube close to the end of the cylindrical tube are jointly slidably installed with a detection rod, and the end of the detection rod away from the cylindrical tube is slidably installed with an I-shaped wheel that fits tightly with the inner wall of the convex tube. A reset spring is sleeved on the outer wall of the detection rod between the retaining ring and the I-shaped wheel, and a lifting column is installed on the end of the I-shaped wheel away from the detection rod. A card slot is opened at the end of the convex tube away from the cylindrical tube, and a card block fixedly connected to the outer wall of the lifting column is slidably installed in the card slot.

[0020] Preferably, a hollow tube is installed at one end of the detection rod close to the cylindrical tube, and a circular ring is installed on the inner wall of one end of the hollow tube close to the retaining ring. There are two limiting grooves symmetrically provided on the circular ring. A telescopic ring is slidably installed inside the end of the detection rod close to the cylindrical tube, and a protrusion is fixedly installed on the outer wall of the telescopic ring to slide in cooperation with the limiting groove.

[0021] Preferably, the pre-processing unit includes:

[0022] Safety valve No. 1 is installed on the outer wall of the ring sleeve near one end of the positioning plate through the sealing ring thread;

[0023] T-shaped connecting pipe, fixedly installed on the end of the No. 1 safety valve away from the ring sleeve;

[0024] The first processing cylinder is fixedly installed at the outlet end of the T-shaped connecting pipe through a connecting pipe;

[0025] The second safety valve is threadedly installed at the outlet end of the T-shaped connecting pipe through a sealing ring;

[0026] The second processing cylinder is fixedly installed at the end of the second safety valve away from the T-shaped connecting pipe through a connecting pipe.

[0027] Preferably, the ring sleeve is formed by two semicircular structures, an arc-shaped slot is formed at one end of the semicircular structure of the ring sleeve, an arc-shaped plug plate matched with the arc-shaped slot is installed at the other end, and arc-shaped sleeves are installed at the clamping positions of the two semicircular structures.

[0028] Preferably, the shaft ends of the two positioning rings are commonly provided with key-shaped plates, the number of the key-shaped plates is two, the key-shaped plates are movably installed on the outer walls of the shaft ends of the positioning rings, the rectangular ends of the two positioning rings are each provided with two threaded holes, adjusting rods are threadedly installed in the threaded holes, and hexagonal rings are threadedly installed on the outer walls of the shaft ends of the adjusting rods.

[0029] Preferably, the inner wall of the convex pipe has two types of diameters at the section away from the cylindrical pipe, and the inner diameter of the side close to the cylindrical pipe is larger than that of the side away from the cylindrical pipe.

[0030] Preferably, the first processing cylinder, the second processing cylinder and the convex pipe are all of transparent material, the first processing cylinder internally contains saturated sodium hydroxide solution for pre-treating chlorine gas, and the second processing cylinder internally passes in nitric oxide for pre-treating carbon monoxide and corresponding catalyst.

[0031] The present application has the following advantages:

[0032] 1. The ring sleeve preliminarily seals and blocks the connecting position of the mixing pipe, the arc-shaped sleeve enhances the air tightness of the ring sleeve after assembly, the radial force exerted by the two positioning rings on the connecting position of the ring sleeve and the mixing pipe is increased through the cooperation between the adjusting rod and the hexagonal ring, the sealing and blocking properties of the ring sleeve on the connecting position of the mixing pipe are improved, the fluid leakage probability of the connecting position of the mixing pipe is reduced, the safety production is improved, the environment is protected, and the health of the operators is maintained.

[0033] 2. The present invention requires the operator to intermittently press the I-shaped pull rod to make the T-shaped plug close to the ring sleeve end completely separate from the cylindrical tube until it contacts the outer wall of the mixing tube. Then, by pulling the lifting column outward, the I-shaped wheel drives the detection rod to gradually separate the hollow tube from the cylindrical tube. Finally, by observing the color change of the moistened litmus paper built into the inner wall of the telescopic ring, it is determined whether there is a gas leak at the connection position of the mixing tube, ensuring that the mixer is always in a safe working environment. In this process, the air tightness of the detection unit itself is enhanced by the rubber ring and the sealing ring, and the hazardous gas is completely blocked from the outside, thereby improving the working safety of the detection personnel.

[0034] 3. The present invention uses the No. 1 safety valve and the No. 2 safety valve to conduct the toxic gas step by step through the T-shaped connecting pipe to the inside of the No. 1 treatment cylinder and the No. 2 treatment cylinder, thereby completing the detoxification and neutralization treatment of the toxic gas. While reducing the leakage rate of the toxic gas, the toxic gas is detoxified and processed into waste, thereby increasing the company's production profits and avoiding the occurrence of production accidents. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0036] Figure 2 This invention is attached Figure 1 A magnified schematic diagram of the local structure at point A.

[0037] Figure 3 It is a schematic diagram of the cross-sectional structure of the ring sleeve of the present invention.

[0038] Figure 4 It is a schematic diagram of the assembly mechanism of the tightening ring, the adjusting rod, the hexagonal ring and the key plate of the present invention.

[0039] Figure 5 It is a schematic diagram of the external structure of the detection unit of the present invention.

[0040] Figure 6 It is a cross-sectional view of the internal structure of the detection unit of the present invention.

[0041] Figure 7 This invention is attached Figure 6 Enlarged schematic diagram of the local structure at point B in the middle.

[0042] Figure 8 It is a cross-sectional schematic diagram of the local structure of the detection unit of the present invention.

[0043] Figure 9 It is a structural schematic diagram of the pretreatment unit of the present invention.

[0044] Numbers in the figure: 1, positioning plate; 2, sealing unit; 3, detection unit; 4, pre-treatment unit;

[0045] 11. Support; 12. Mixing tube;

[0046] 21, bolt; 22, nut; 23, annular groove; 24, ring sleeve; 25, circular hole; 26, positioning ring; 27, gasket ring;

[0047] 31, cylindrical tube; 32, I-beam; 33, T-shaped plug; 34, partition plate; 35, extension spring; 36, rubber ring;

[0048] 311, convex tube; 312, blocking ring; 313, probe rod; 314, I-shaped wheel; 315, return spring; 316, lifting column; 317, clamping groove; 318, clamping block;

[0049] 41, first safety valve; 42, T-shaped connecting pipe; 43, first processing cylinder; 44, second safety valve; 45, second processing cylinder;

[0050] 241, arc-shaped groove; 242, arc-shaped sleeve; 243, arc-shaped plug plate;

[0051] 251, key-shaped plate; 252, threaded hole; 253, adjusting rod; 254, hexagonal ring;

[0052] 3131, hollow cylinder; 3132, circular ring; 3133, limiting groove; 3134, extension ring; 3135, protrusion. DETAILED DESCRIPTION

[0053] In order to make the objects, technical solutions and advantages of the present application clearer, the present application will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and not intended to limit the present application.

[0054] It should be noted that the terms "vertical", "horizontal", "left", "right" and similar expressions used herein are only for illustrative purposes and do not represent the only implementation.

[0055] The specific implementation of the present application will be described in detail below with reference to specific embodiments.

[0056] Reference Figure 1 It can be known that a static mixer comprises a positioning plate 1 in a rectangular shape, and the upper end surface of the positioning plate 1 is provided with two supports 11 in a symmetrical manner, and each of the two supports 11 is provided with a mixing pipe 12 opposite to each other, and the connecting position of the two mixing pipes 12 is provided with a sealing unit 2, and the sealing unit 2 is provided with a detection unit 3, and the upper end surface of the positioning plate 1 is provided with a pretreatment unit 4 at the rear position, which is used to treat toxic gas.

[0057] Reference Figure 1 、 Figure 2 and Figure 3It can be seen that the sealing unit 2 includes: a bolt 21, which is installed through the connecting ends of the two mixing tubes 12 and is evenly distributed along the circumference of the mixing tube 12; a nut 22, which is threadedly installed on the outer wall of the axial end of the bolt 21; an annular groove 23, which is opened in the middle position of the outer wall of the connecting end of each mixing tube 12; a ring sleeve 24, which is movably installed between two adjacent annular grooves 23, and the ring sleeve 24 is composed of two semicircular rings 3132 that cooperate with each other, and the outer wall of the ring sleeve 24 is evenly provided with circular holes 25 along its circumference, and there are four of them; a tightening ring 26, which is two in number and is movably and fitly installed on the outer wall of the ring sleeve 24, and the tightening ring 26 is composed of a rectangular segment, a semicircular ring 3132 segment and an axial segment; a gasket ring 27, which is installed on the outer wall of each ring sleeve 24 and corresponds one to one to the position of the circular hole 25;

[0058] Reference Figure 3 It can be seen that the ring sleeve 24 consists of two semicircular structures. An arc-shaped groove 241 is opened at one end of the semicircular structure of the ring sleeve 24, and an arc-shaped insert plate 243 is installed at the other end to match the arc-shaped groove 241. In addition, the two semicircular structures constituting the ring sleeve 24 are both installed with arc sleeves 242 at the clamping positions.

[0059] Reference Figure 4 It can be seen that the axial ends of the two tightening rings 26 are commonly installed with key plates 251, the number of which is two, and the key plates 251 are movably installed on the outer walls of the axial ends of the tightening rings 26. The rectangular ends of the two tightening rings 26 are both provided with threaded holes 252, the number of which is two, and the inner threads of the threaded holes 252 are installed with adjusting rods 253, and the outer walls of the axial ends of the adjusting rods 253 are threaded with hexagonal rings 254.

[0060] During the specific implementation, the pre-treatment unit 4 is first kept in a horizontal and stable state by the positioning plate 1, and then the mixing tube 12 is lifted to a specified height by the support 11, thereby enhancing the stability of the mixing tube 12 and avoiding unnecessary collision between the detection unit 3 and the upper end surface of the positioning plate 1. The sealing unit 2 is used to strengthen the airtightness of the connection position of the mixing tube 12 to prevent economic losses caused by gas leakage.

[0061] Then the operator rotates the nut 22 a specified number of turns, and then cooperates with the bolt 21 to achieve seamless installation of the two mixing tubes 12 to be assembled, which is convenient for disassembly and maintenance, and also enhances the airtightness and operation stability of the mixing tubes 12 after connection. After that, the connection position of the two mixing tubes 12 is further protected from leakage by the ring sleeve 24 composed of two semicircular structures (the seamless assembly of the ring sleeve 24 is completed by the coordinated cooperation between the arc-shaped insert plate 243 and the arc-shaped groove 241 between the two semicircular structures, and the two semicircular structures constituting the ring sleeve 24 are connected by the arc sleeve 242). The connecting end of the structure is sealed to further enhance the sealing performance of the ring sleeve 24 itself, thereby improving the protection of the ring sleeve 24 to the connection position of the adjacent mixing tube 12). The operator tightens the two semicircular tightening rings 26 movably connected by the key plate 251 to the ring sleeve 24 by twisting the adjusting rod 253 and the hexagonal ring 254 (the radial forces exerted by the tightening ring 26 on the ring sleeve 24 are different when the adjusting rod 253 and the hexagonal ring 254 are twisted different times, further improving the airtightness between the ring sleeve 24 and the annular groove 23 at the connection position of the adjacent mixing tube 12, preventing gas leakage);

[0062] Finally, the gasket ring 27 is used to enhance the air tightness of the connection between the circular hole 25 and the detection unit 3, reducing the possibility of gas flowing from the inside of the ring sleeve 24 to the outside in all directions, improving environmental protection and ensuring the health of detection and staff.

[0063] Reference Figure 1 、 Figure 5 、 Figure 6 and Figure 7 It can be seen that the detection unit 3 includes: a cylindrical tube 31, which is snap-fitted into each circular hole 25 and seamlessly assembled through a gasket ring 27; an I-shaped tie rod 32, which is slidably mounted on the end of the cylindrical tube 31 away from the axis of the mixing tube 12; a T-shaped plug 33, which is snap-fitted into the end of the I-shaped tie rod 32 close to the axis of the mixing tube 12; a partition 34, which is fixedly mounted on the side of the cylindrical tube 31 close to the axis of the mixing tube 12; a telescopic spring 35, which is sleeved on a section of the outer wall of the T-shaped plug 33 with a smaller axial diameter, and is located on the side of the partition 34 close to the axis of the mixing tube 12, and at the same time, the two ends of the telescopic spring 35 are respectively fixedly connected to the partition 34 and the T-shaped plug 33; a rubber ring 36, which is fixedly mounted on the outer wall of the I-shaped tie rod 32 and the T-shaped plug 33 close to the mixing tube 12, and fits tightly with the inner wall of the cylindrical tube 31;

[0064] Reference Figure 1 、 Figure 6 and Figure 7The cam 314 is a push-pull mechanism that is used to push the piston rod 316 together with the piston rod 318, so that the piston rod 316 can be pushed against the piston rod 314 by the piston rod 318 protruding from the piston rod 316 to push the piston rod 318 upwards to push the piston rod 316 downwards.

[0065] Reference Figure 6 、 Figure 7 and Figure 8 As can be seen, a hollow cylinder 3131 is installed at the end of the detection rod 313 close to the cylindrical tube 31, and a circular ring 3132 is installed on the inner wall of the end of the hollow cylinder 3131 close to the retaining ring 312. Two limiting grooves 3133 are symmetrically provided on the circular ring 3132. A telescopic ring 3134 is slidably installed inside the end of the detection rod 313 close to the cylindrical tube 31, and a protrusion 3135 is fixedly installed on the outer wall of the telescopic ring 3134 to slide in cooperation with the limiting groove 3133.

[0066] Reference Figure 6 It can be seen that the inner wall diameter of the convex tube 311 away from the cylindrical tube 31 has two sizes, and the inner diameter of the side close to the cylindrical tube 31 is larger than the inner diameter of the side away from the cylindrical tube 31.

[0067] When the operator starts to detect whether there is gas leakage inside the ring sleeve 24:

[0068] The operator presses the I-shaped tie rod 32 at different positions. The I-shaped tie rod 32 under force drives the T-shaped plug 33 to move toward the axis of the annulus 24 until the T-shaped plug 33 contacts the outer wall of the mixing tube 12 (and at this time, the T-shaped plug 33 is close to the axis of the annulus 24, and the end with the larger diameter is completely extended from the inner area of ​​the cylindrical tube 31). At this time, if gas leakage occurs inside the annulus 24, and the operator releases the pressing state after pressing the I-shaped tie rod 32 for a period of time (the time interval between the operator pressing and not pressing is 5 seconds), the T-shaped plug 33 is driven to return to its initial position under the elastic force of the telescopic spring 35 itself.

[0069] At the same time, part of the gas inside the annular sleeve 24 follows the contraction movement of the T-shaped plug 33 and enters the cylindrical tube 31. The gas then fills all areas inside the cylindrical tube 31 through the unsealed partition 34. The operator then pulls the lifting column 316 outward (before this, the lifting column 316 is rotated a certain angle (in the initial state, the block 318 is completely out of the groove 317, the block 318 is at the intersection where the convex tube 311 is away from one end of the cylindrical tube 31 and the internal diameter changes, and the block 318 is not directly opposite the groove 317), until the block 318 is directly opposite the groove 317). After being stressed, the shaped wheel 314 (which is in close contact with the inner wall of the convex tube 311 to prevent gas from flowing to the outside through the convex tube 311 after the cylindrical tube 31 and the convex tube 311 are connected, thereby endangering the health of the operator) drives the detection rod 313 to move away from the ring sleeve 24 (at this time, the return spring 315 is in an extended state driven by the detection rod 313. When the lifting column 316 is no longer stressed, the return spring 315 drives the detection rod 313 to return to its original position under its own elastic force) until the hollow tube 3131 (the hollow design enhances the contact between the gas and the moistened litmus paper, thereby improving the detection accuracy) is separated from the interior of the cylindrical tube 31;

[0070] Finally, the operator observes the color change of the moistened litmus paper built into the telescopic ring 3134 (the telescopic ring 3134 is extremely easy to remove and install and has self-locking properties. Through the cooperation between the protrusion 3135 and the limiting groove 3133, the operator presses the telescopic telescopic ring 3134 toward the detection rod 313 until the protrusion 3135 is completely on the side of the circular ring 3132 close to the detection rod 313. Then, the telescopic ring 3134 is rotated. At this time, the protrusion 3135 is disengaged from the limiting groove 3133. Under the action of the elastic force of the telescopic ring 3134 itself, the protrusion 3135 and the circular ring 3132 generate a mutual resistance force, thereby realizing the self-locking limit of the telescopic ring 3134. The removal of the telescopic ring 3134 is completely opposite to its aforementioned working principle). The operator determines whether there is a gas leak inside the ring sleeve 24, thereby improving the safety and accuracy of gas detection;

[0071] The rubber ring 36 prevents the gas inside the cylindrical tube 31 from flowing to the outside through the connection between the cylindrical tube 31 and the I-shaped tie rod 32. When the convex tube 311 is disassembled, the connection between the ring sleeve 24 and the outside is completely blocked, further improving the safety of the operation.

[0072] By arranging a plurality of detection units 3 circumferentially around the annulus 24 , the accuracy of gas detection inside the annulus 24 is improved (the detection range of a single detection unit 3 is reduced, and the detection accuracy of gas flow in a small range is improved).

[0073] Reference Figure 9It can be known that the pretreatment unit 4 comprises: a first safety valve 41, which is threadedly installed on the outer wall of the ring sleeve 24 close to one end of the positioning plate 1 through a sealing ring; a T-shaped connecting pipe 42, which is fixedly installed at one end of the first safety valve 41 away from the ring sleeve 24; a first treatment cylinder 43, which is fixedly installed at one side of the outlet end of the T-shaped connecting pipe 42 through a communication pipe; a second safety valve 44, which is threadedly installed at the other side of the outlet end of the T-shaped connecting pipe 42 through a sealing ring; and a second treatment cylinder 45, which is fixedly installed at one end of the second safety valve 44 away from the T-shaped connecting pipe 42 through a communication pipe.

[0074] With reference to Figure 1 and Figure 9 It can be known that the first treatment cylinder 43, the second treatment cylinder 45 and the convex pipe 311 are all of transparent material, and the first treatment cylinder 43 internally contains saturated sodium hydroxide solution for pretreating chlorine gas, and the second treatment cylinder 45 internally passes in nitric oxide for pretreating carbon monoxide and corresponding catalyst.

[0075] When it is determined that gas leakage occurs inside the ring sleeve 24 (i.e. the connection position of the mixing pipe 12):

[0076] The operator first adds corresponding neutralizing substances (for example, for the mixture of chlorine gas and carbon monoxide, saturated sodium hydroxide solution is passed into the first treatment cylinder 43, and nitric oxide and related catalysts are passed into the second treatment cylinder 45, and the reaction in the second treatment cylinder 45 can be referred to in the specific implementation process) into the interiors of the first treatment cylinder 43 and the second treatment cylinder 45 (the number of corresponding treatment cylinders and safety valves (all of which are one-way valves in the actual use process) is adjusted according to the number of mixed gases in the actual operation), and the opening times of the first safety valve 41 and the second safety valve 44 are staggered (i.e. the second safety valve 44 is opened after the complete stop of the reaction in the transparent first treatment cylinder 43 is observed), until the toxic gas is determined to be completely neutralized.

[0077] The working principle of the static mixer provided by the application is as follows: first, the ring sleeve 24 composed of two semicircular structures preliminarily prevents and blocks the leakage of the connection position of the mixing pipe 12, the arc-shaped sleeve 242 seals the connection position of the arc-shaped plug 243 and the arc-shaped groove 241, the degree of action between the adjusting rod 253 and the hexagonal ring 254 is adjusted, the radial force of the clamping ring 26 on the ring sleeve 24 is enhanced, and the air tightness of the ring sleeve 24 is further improved;

[0078] Step 2: Intermittently press the I-shaped pull rod 32 to control the T-shaped plug 33 to bring some of the gas inside the annulus 24 into the cylindrical tube 31. Then, by pulling the lifting column 316, the wet litmus paper in the telescopic ring 3134 in the hollow cylinder 3131 gradually enters the observation area of ​​the transparent convex tube 311. The color change of the wet litmus paper can accurately determine whether there is a gas leak in the annulus 24.

[0079] Step 3: Finally, the mixed gas is passed through the No. 1 treatment cylinder 43 and the No. 2 treatment cylinder 45 step by step through the No. 1 safety valve 41 and the No. 2 safety valve 44 that are opened at intervals, thereby completing the step-by-step neutralization of the mixed gas.

[0080] The circuits and controls involved in the present invention are all prior art and will not be described in detail here.

[0081] The above are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention description and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A static mixer, comprising a rectangular positioning plate (1), wherein the upper end surface of the positioning plate (1) is symmetrically provided with two supports (11), and both supports (11) are provided with mixing tubes (12) facing each other, characterized in that: A sealing unit (2) is commonly provided at the connection position of the two mixing tubes (12), a detection unit (3) is provided on the sealing unit (2), and a pre-processing unit (4) is provided at the rear side of the upper end surface of the positioning plate (1) for processing toxic gases; The sealing unit (2) comprises: Bolts (21) are installed through the connection ends of the two mixing tubes (12) and are evenly distributed along the circumference of the mixing tubes (12); A nut (22) threadedly mounted on the outer wall of the shaft end of the bolt (21); An annular groove (23) is provided in the middle of the outer wall of the connecting end of each mixing tube (12); A ring sleeve (24) is movably mounted between two adjacent annular grooves (23), and the ring sleeve (24) is composed of two semicircular rings (3132) that cooperate with each other. The outer wall of the ring sleeve (24) is uniformly provided with four circular holes (25) along its circumference; There are two tight-fitting rings (26) which are movably and fittingly mounted on the outer wall of the ring sleeve (24). The tight-fitting rings (26) are composed of a rectangular segment, a semicircular ring (3132) segment and a shaft segment. A gasket ring (27) is mounted on the outer wall of each ring sleeve (24) and corresponds to the position of the circular hole (25); The detection unit (3) comprises: A cylindrical tube (31) is snap-fitted into each circular hole (25) and seamlessly assembled via a gasket ring (27); An I-shaped tie rod (32) is slidably mounted on one end of the cylindrical tube (31) away from the axis of the mixing tube (12); A T-shaped plug (33) is mounted on the I-shaped tie rod (32) at one end close to the axis of the mixing tube (12); A partition (34) is fixedly mounted on the cylindrical tube (31) on one side close to the axis of the mixing tube (12); The telescopic spring (35) is sleeved on a section of the outer wall of the T-shaped plug (33) with a smaller axial diameter and is located on the side of the partition (34) close to the axis of the mixing tube (12). At the same time, the two ends of the telescopic spring (35) are respectively fixedly connected to the partition (34) and the T-shaped plug (33); A rubber ring (36) is fixedly mounted on the outer wall of one end of the I-shaped tie rod (32) and the T-shaped plug (33) close to the mixing tube (12), and is tightly fitted to the inner wall of the cylindrical tube (31); The outer wall of the cylindrical tube (31) on one side away from the axis of the mixing tube (12) is seamlessly connected to the convex tube (311) through a sealing ring, and a retaining ring (312) is installed inside the end of the convex tube (311) close to the cylindrical tube (31), and the retaining ring (312) and the convex tube (311) close to the cylindrical tube (31) are slidably installed with a detection rod (313) together. The end of the detection rod (313) away from the cylindrical tube (31) is slidably installed with a retaining ring (312) on the inner wall of the convex tube (311). A tightly fitting work wheel (314), a reset spring (315) is sleeved on the outer wall of the detection rod (313) between the retaining ring (312) and the work wheel (314), a lifting column (316) is installed on the end of the work wheel (314) away from the detection rod (313), a clamping groove (317) is opened on the end of the convex tube (311) away from the cylindrical tube (31), and a clamping block (318) fixedly connected to the outer wall of the lifting column (316) is slidably installed in the clamping groove (317); A hollow cylinder (3131) is installed at one end of the detection rod (313) close to the cylindrical tube (31), and a circular ring (3132) is installed on the inner wall of one end of the hollow cylinder (3131) close to the retaining ring (312). Two limiting grooves (3133) are symmetrically provided on the circular ring (3132). A telescopic ring (3134) is slidably installed inside one end of the detection rod (313) close to the cylindrical tube (31), and a protrusion (3135) is fixedly installed on the outer wall of the telescopic ring (3134) and is slidably fitted with the limiting groove (3133).

2. A static mixer according to claim 1, characterized in that: The pre-processing unit (4) comprises: A safety valve (41) is threadedly mounted on the outer wall of the ring sleeve (24) near one end of the positioning plate (1) through a sealing ring; A T-shaped connecting pipe (42) is fixedly mounted on the end of the No. 1 safety valve (41) away from the ring sleeve (24); A first treatment cylinder (43) is fixedly mounted on one side outlet end of the T-shaped connecting pipe (42) via a connecting pipe; The second safety valve (44) is threadedly mounted on the outlet end of the other side of the T-shaped connecting pipe (42) through a sealing ring; The second treatment cylinder (45) is fixedly mounted on the end of the second safety valve (44) away from the T-shaped connecting pipe (42) through a connecting pipe.

3. A static mixer according to claim 1, characterized in that: The ring sleeve (24) consists of two semicircular structures. An arc groove (241) is provided at one end of the semicircular structure of the ring sleeve (24), and an arc plug plate (243) matching the arc groove (241) is installed at the other end. The two semicircular structures constituting the ring sleeve (24) are both installed with arc sleeves (242) at the clamping positions.

4. A static mixer according to claim 1, characterized in that: The shaft ends of the two tightening rings (26) are commonly mounted with a key plate (251), the number of which is two, and the key plate (251) is movably mounted on the outer wall of the shaft end of the tightening ring (26). The rectangular ends of the two tightening rings (26) are both provided with a threaded hole (252), the number of which is two, and an adjusting rod (253) is mounted on the inner thread of the threaded hole (252). The outer wall of the shaft end of the adjusting rod (253) is threadedly mounted with a hexagonal ring (254).

5. A static mixer according to claim 1, characterized in that: The inner wall diameter of a section of the convex tube (311) away from the cylindrical tube (31) has two sizes, and the inner diameter of the side close to the cylindrical tube (31) is larger than the inner diameter of the side away from the cylindrical tube (31).

6. A static mixer according to claim 2, characterized in that: The No. 1 treatment cylinder (43), the No. 2 treatment cylinder (45) and the convex tube (311) are all made of transparent materials. At the same time, the No. 1 treatment cylinder (43) is filled with a saturated sodium hydroxide solution for pre-treating chlorine, and the No. 2 treatment cylinder (45) is filled with nitrogen monoxide and a corresponding catalyst for pre-treating carbon monoxide.

Images