A waste gas treatment spray pipe connection structure

Abstract

A waste gas treatment spray pipe connection structure belongs to the field of waste gas treatment equipment, including a water supply pipe, a connecting pipe, and a spray pipe. Flanges are respectively provided at both ends of the connecting pipe, and corresponding flanges are also provided on the water supply pipe and the spray pipe. Several mounting holes evenly distributed circumferentially are respectively provided on the flanges. Several nozzles are connected and installed on the spray pipe. A coaxial sealing cover can be detachably installed at one end of the spray pipe. A first annular plate is fixedly installed in the connecting pipe, and a rubber tube is fixedly installed on the first annular plate. The present invention has a simple structure and an ingenious design. After high-temperature waste gas is introduced into the spray tower, the spray pipe is instantly exposed to high temperature to increase the air pressure inside it, causing the rubber tube to expand, generating a force to pull the first circular tube to the right, and under the guidance of the spiral slide groove and the slider, the spiral blade is driven to rotate, and the scale on the inner wall of the spray pipe is scraped off and transported to the left end, realizing automatic cleaning of the scale, which can meet actual needs and is suitable for promotion.

Description

Technical Field

[0001] The invention belongs to the field of waste gas treatment equipment, in particular to a waste gas treatment spray pipe connection structure. Background Art

[0002] Waste gas is generally passed into a spray tower for treatment. When the waste gas passes through the spray tower, liquid media are sprayed out from appropriate positions inside the tower. Some are alkali solutions and some are sulfuric acid solutions. The existing spray pipes are directly connected to the water supply pipes. The liquid used to treat the waste gas is prone to scale formation in the pipes, affecting normal use. When the scale falls off, it is also easy to cause nozzle blockage. Especially when alkali solutions containing calcium are used to treat waste gas, scaling is more likely to form. Therefore, we have designed a waste gas treatment spray pipe connection structure that can handle scaling. Summary of the invention

[0003] The invention provides a waste gas treatment spray pipe connection structure to solve the defects in the prior art.

[0004] The present invention is achieved through the following technical solutions:

[0005] A waste gas treatment spray pipe connection structure comprises a water supply pipe, a connecting pipe and a spray pipe. Both ends of the connecting pipe are respectively provided with flanges. The water supply pipe and the spray pipe are also provided with corresponding flanges. Several mounting holes evenly distributed in a circle are respectively provided on the flanges. Several nozzles are connected and installed on the spray pipe. A coaxial sealing cover is detachably installed on one end of the spray pipe. A first annular plate is fixedly installed in the connecting pipe, a rubber tube is fixedly installed on the first annular plate, an annular groove is provided on the connecting pipe corresponding to the rubber tube, a first circular tube is fixedly installed on the rubber tube, a slider is fixedly installed on the first circular tube, a spiral groove is provided on the connecting pipe, the slider is slidably installed in the spiral groove, several slots evenly distributed in a circle are provided on the first circular tube, plug rods are respectively connected in the slots through first springs, a second annular plate is fixedly installed on the plug rod, the second annular plate is rotatably installed in the connecting pipe, a spiral blade is rotatably installed on the second annular plate through a one-way bearing, the spiral blade extends into the spray pipe and is in sliding contact with the inner wall of the spray pipe.

[0006] In the waste gas treatment spray pipe connection structure as described above, an annular first airbag is installed in the annular groove, annular grooves are respectively opened at both ends of the connecting pipe, and second airbags are respectively installed in the annular grooves, and the second airbags are respectively connected to the first airbags.

[0007] As described above, an exhaust gas treatment spray pipe connection structure is provided with a through hole on the sealing cover, a threaded cross bar is slidably installed in the through hole, a baffle is installed in cooperation with the threads on the cross bar, a piston is airtightly slidably installed in the spray pipe, the piston is fixedly connected to the cross bar, and the piston is elastically connected to the sealing cover via a second spring.

[0008] In the waste gas treatment spray pipe connection structure as described above, the sealing plate is fixedly installed on the cross bar through the connecting rod, and a slag discharge hole is opened on the spray pipe, and the piston and the sealing plate can both close the slag discharge hole.

[0009] As described above, a waste gas treatment spray pipe connection structure, a second circular tube is fixedly installed on the second annular plate, a first annular installation groove is provided on the second circular tube, a first sealing ring is installed in the first installation groove, the first sealing ring is tightly fitted with the first circular tube, an annular second installation groove is provided on the first circular tube, a second sealing ring is installed in the second installation groove, and the second sealing ring is tightly fitted with the connecting pipe.

[0010] In the exhaust gas treatment spray pipe connection structure as described above, the second circular tube and the first annular plate are respectively provided with inner chamfers at one end close to the water supply pipe.

[0011] In the waste gas treatment spray pipe connection structure as described above, the spray pipe is connected to the spray head through a water hole, and a filter screen is fixedly installed in the water hole.

[0012] The advantages of the present invention are: the present invention has a simple structure and an ingenious design. The spray pipe and the water supply pipe are transitionally connected by a connecting pipe, and the connecting pipe can utilize the pressure change inside the spray pipe to descale the spray pipe; after the high-temperature exhaust gas is introduced into the spray tower, the spray pipe is instantly exposed to the high temperature to increase the air pressure inside it, causing the rubber tube to expand, generating a force to pull the first circular tube to the right, and under the guidance of the spiral slide groove and the slider, the spiral blades are driven to rotate, scraping off the scale on the inner wall of the spray pipe and transporting it to the left end, thereby realizing automatic cleaning of the scale, meeting actual needs, and being suitable for promotion. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0014] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 yes Figure 1 Section view along line AA; Figure 3 It is a schematic diagram of the right end face of the connecting pipe; Figure 4 yes Figure 1 A partial enlarged view of location Ⅰ.

[0015] Figure numerals: 1, water supply pipe, 2, connecting pipe, 3, spray pipe, 4, flange, 5, nozzle, 6, first annular plate, 7, rubber tube, 8, first round tube, 9, slot, 10, first spring, 11, plug rod, 12, second annular plate, 13, one-way bearing, 14, spiral blade, 15, annular groove, 16, sealing cover, 17, slider, 18, spiral slide groove, 20, first air bag, 21, annular groove, 22, second air bag, 30, cross bar, 31, baffle, 32, piston, 33, second spring, 40, connecting rod, 41, sealing plate, 42, slag discharge hole, 50, second round tube, 51, first mounting groove, 52, first sealing ring, 53, second mounting groove, 54, second sealing ring, 70, filter screen. DETAILED DESCRIPTION

[0016] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0017] A waste gas treatment spray pipe connection structure, such as Figure 1 , Figure 2 , Figure 3 , Figure 4As shown, it includes a water supply pipe 1, a connecting pipe 2, and a spray pipe 3. The water supply pipe 1, the connecting pipe 2, and the spray pipe 3 are coaxially arranged. Flanges 4 are respectively arranged at both ends of the connecting pipe 2. The water supply pipe 1 and the spray pipe 3 are also provided with corresponding flanges 4. Several mounting holes evenly distributed in a circle are respectively opened on the flanges 4. The water supply pipe 1, the connecting pipe 2, and the spray pipe 3 are connected together by bolts through the mounting holes on the flanges 4. Several nozzles 5 are connected and installed on the spray pipe 3. A coaxial sealing cover 16 can be detachably installed at one end of the spray pipe 3 to seal The inner circumference of the cover 16 and the outer circumference of the spray pipe 3 are both provided with threads and are threadedly connected together. A first annular plate 6 is fixedly installed in the connecting pipe 2, and a rubber tube 7 is fixedly installed on the first annular plate 6. One end of the rubber tube 7 is fixedly connected to the first annular plate 6. An annular groove 15 is provided on the connecting pipe 2 corresponding to the rubber tube 7. The rubber tube 7 can enter the annular groove 15 when it expands. A first round tube 8 is fixedly installed on the rubber tube 7, and the other end of the rubber tube 7 is fixedly connected to the first round tube 8. A slider 17 is fixedly installed on the first round tube 8. A spiral groove 18 is provided on the connecting pipe 2. The slider 17 is slidably installed in the spiral groove 18. A number of slots 9 evenly distributed on the circumference are provided on the first round tube 8. The slots 9 are respectively connected with a plug rod 11 through a first spring 10. The right end of the plug rod 11 is fixedly connected to one end of the first spring 10, and the other end of the first spring 10 is fixedly connected to the inner wall of the slot 9. A second annular plate 12 is fixedly installed on the plug rod 11. The second annular plate 12 is rotatably installed in the connecting pipe 2, and the second annular plate 12 is fixedly connected to the inner wall of the sealed bearing. The outer ring of the sealing bearing is fixedly connected to the inner wall of the connecting pipe 2, the spiral blade 14 is rotatably installed on the second annular plate 12 through the one-way bearing 13, the second annular plate 12 is fixedly connected to the outer ring of the one-way bearing 13, the inner ring of the one-way bearing 13 is fixedly connected to the spiral blade 14, the first annular plate 6, the rubber tube 7, the first round tube 8, the second annular plate 12, the spiral blade 14, the annular groove 15, and the spiral chute 18 are coaxially arranged, and the spiral blade 14 extends into the spray pipe 3 and is in sliding contact with the inner wall of the spray pipe 3. The present invention has a simple structure and an ingenious design. After the high-temperature exhaust gas is introduced into the spray tower, the spray pipe 3 is instantly exposed to the high temperature to increase the air pressure inside the spray pipe 3, so that the rubber tube 7 expands, and generates a force to pull the first round tube 8 to the right, and under the guidance of the spiral chute 18 and the slider 17, the spiral blade 14 is driven to rotate, and the scale on the inner wall of the spray pipe 3 is scraped off and transported to the left end, so that the scale is automatically cleaned, which can meet the actual needs and is suitable for promotion.When using the present invention, the device is installed on the spray tower used, the spray pipe 3 is located inside the spray tower, and the connecting pipe 2 is located outside the spray tower. Then, the two ends of the connecting pipe 2 are connected to the water supply pipe 1 and the spray pipe 3 in sequence through the flange 4 and bolts. When high-temperature exhaust gas is introduced into the spray tower, the spray pipe 3 is instantly exposed to high temperature to increase the air pressure inside it, and then the pressure inside the connecting pipe 2 increases, and the rubber tube 7 is expanded by the pressure to the outside and extends into the annular groove 15. The expansion of the rubber tube 7 gives the first circular tube 8 a pulling force to the right, causing it to move to the right. The first circular tube 8 and the insertion rod 11 move relative to each other, and the first spring 10 is stretched, while driving the slider 17 to slide in the spiral slide groove 18, thereby driving the first circular tube 8, the second annular plate 12, and the spiral blade 14 to rotate. The rotation of the spiral blade 14 can move the spray The scale on the inner wall of the shower pipe 3 is scraped off, and the scraped scale falls to the bottom and is transported to the left end by the rotating spiral blade 14 for the next step of processing. Since the temperature change of the high-temperature exhaust gas entering the spray tower fluctuates greatly, the pressure change in the spray pipe 3 fluctuates greatly, and the pressure inside the spray pipe 3 is sometimes high and sometimes low. When the pressure decreases, the expansion of the rubber tube 7 decreases, and the first spring 10 gives the first circular tube 8 a leftward pulling force, driving it to move left, and at the same time resets under the guidance of the slider 17 and the spiral slide groove 18, and drives the second annular plate 12 to rotate in the opposite direction. Due to the action of the one-way bearing 13, the reverse rotation of the second annular plate 12 will not drive the spiral blade 14 to rotate, thereby preventing the spiral blade 14 from transporting the scale to the right end in the opposite direction. As the pressure inside the spray pipe 3 changes, the scraped scale can be gradually pushed to the left end of the spray pipe 3.

[0018] Specifically, if Figure 1 As shown, in the present embodiment, an annular first airbag 20 is installed in the annular groove 15, an annular groove 21 is respectively provided at both ends of the connecting pipe 2, and a second airbag 22 is respectively installed in the annular groove 21, and the second airbag 22 is respectively connected with the first airbag 20, and a reserved hole for connecting the annular groove 15 and the annular groove 21 is provided on the connecting pipe 2, and a connecting pipe is respectively installed in the reserved hole, and the connecting pipe connects the corresponding second airbag 22 and the first airbag 20. When the rubber tube 7 expands, the rubber tube 7 applies a pressure to the first airbag 20 to compress it, thereby pressing the gas in the first airbag 20 into the second airbags 22 on both sides, and the second airbag 22 expands, and the second airbag 22 is closely attached to the end face of the water supply pipe 1 or the end face of the spray pipe 3, thereby increasing the sealing of the connection and reducing the possibility of leakage, and the sealing increases with the increase of the internal pressure of the spray pipe 3. When the internal pressure of the spray pipe 3 is low, a high sealing is not required, thereby avoiding the second airbag 22 from plastic deformation due to long-term expansion, resulting in reduced sealing effect.

[0019] Specifically, Figure 1As shown, the sealing cover 16 of this embodiment is provided with a through hole, a cross bar 30 with a thread is slidably installed in the through hole, a baffle 31 is installed on the cross bar 30 with threads, a threaded hole is provided on the baffle 31, and is connected with the threads on the cross bar 30, a piston 32 is airtightly slidably installed in the spray pipe 3, the piston 32 is fixedly connected to the cross bar 30, the piston 32 is elastically connected to the sealing cover 16 through a second spring 33, the second spring 33 is sleeved on the cross bar 30, one end of the second spring 33 is fixedly connected to the piston 32, and the other end of the second spring 33 is fixedly connected to the inner wall of the sealing cover 16. When the pressure in the spray pipe 3 is high, the liquid pushes the piston 32 and the cross bar 30 to move to the left, at which time the second spring 33 is compressed, which can buffer the impact of the liquid when it enters, and by twisting the baffle 31, the length of the cross bar 30 extending into the spray pipe 3 is adjusted, and the compression degree of the second spring 33 is changed, so as to achieve different buffering effects, which is convenient for use.

[0020] Further, such as Figure 1 As shown, the sealing plate 41 is fixedly installed on the cross bar 30 described in this embodiment through the connecting rod 40, one end of the connecting rod 40 is fixedly connected to the sealing plate 41, and the other end of the connecting rod 40 is fixedly connected to the cross bar 30. A slag discharge hole 42 is provided on the spray pipe 3, and the piston 32 and the sealing plate 41 can both seal the slag discharge hole 42. When the internal pressure of the spray pipe 3 is low, the piston 32 moves to the right under the action of the second spring 33, and the piston 32 drives the cross bar 30, the connecting rod 40, and the sealing plate 41 to move to the right. The piston 32 seals the upper end of the slag discharge hole 42, and the sealing plate 41 no longer seals the lower end of the slag discharge hole 42. At this time, it is convenient for impurities in the slag discharge hole 42 to be discharged. When the internal pressure of the spray pipe 3 is high, the piston 32 is pushed to move to the left, and the piston 32 drives the cross bar 30, the connecting rod 40, and the sealing plate 41 to move to the left. The sealing plate 41 seals the lower end of the slag discharge hole 42, and the piston 32 no longer seals the upper end of the slag discharge hole 42. At this time, the spiral blade The sheet 14 can push the cleaned impurities into the slag discharge hole 42; when the air pressure in the spray pipe 3 rises excessively due to the temperature, the air pressure in the spray pipe 3 is too high, and the air pressure pushes the piston 32 to move to the left, the second spring 33 is compressed, and drives the cross bar 30, the connecting rod 40, and the sealing plate 41 to move to the left until the sealing plate 41 can not completely close the slag discharge hole 42. At this time, the gas in the spray pipe 3 can be discharged to relieve the pressure. When the air pressure in the spray pipe 3 is balanced, the piston 32, the cross bar 30, the connecting rod 40, and the sealing plate 41 are reset under the action of the second spring 33 to re-seal the slag discharge hole 42.

[0021] Furthermore, Figure 1 , Figure 4As shown, in this embodiment, the second circular plate 12 is fixedly mounted with the second circular tube 50, the second circular tube 50 is provided with an annular first mounting groove 51, the first sealing ring 52 is mounted in the first mounting groove 51, the first sealing ring 52 is closely fitted with the first circular tube 8, the first circular tube 8 is provided with an annular second mounting groove 53, the second sealing ring 54 is mounted in the second mounting groove 53, and the second sealing ring 54 is closely fitted with the connecting tube 2. The first sealing ring 52 and the second sealing ring 54 form a double seal, which increases the sealing performance, thereby preventing the liquid from entering the annular groove 15 through the gap between the first circular tube 8 and the connecting tube 2, affecting the expansion of the rubber tube 7 and the first airbag 20, and also preventing the leakage of the liquid.

[0022] Furthermore, Figure 1 As shown, in this embodiment, the second circular tube 50 and the first annular plate 6 are respectively provided with inner rounded corners at one end close to the water supply pipe 1. The inner rounded corners can reduce the resistance of the liquid when it flows through, so that the liquid can flow to the spray pipe 3 more smoothly.

[0023] Furthermore, Figure 1 As shown, the spray pipe 3 of this embodiment is connected with the spray head 5 through the water hole, and a filter screen 70 is fixedly installed in the water hole, and the filter screen 70 is coaxially arranged with the spray pipe 3. The filter screen 70 can prevent impurities scraped off by the spiral blade 14 from entering the spray head 5, thereby preventing the spray head 5 from being blocked; when the spiral blade 14 rotates, the impurities on the filter screen 70 can also be scraped away, which is convenient for use.

[0024] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A waste gas treatment spray pipe connection structure, comprising a water supply pipe (1), a connection pipe (2), and a spray pipe (3), wherein flanges (4) are respectively provided at both ends of the connection pipe (2), and corresponding flanges (4) are also provided on the water supply pipe (1) and the spray pipe (3), wherein a plurality of mounting holes evenly distributed in a circumference are respectively provided on the flanges (4), a plurality of spray heads (5) are connected and installed on the spray pipe (3), and a coaxial sealing cover (16) is detachably installed at one end of the spray pipe (3), wherein: A first annular plate (6) is fixedly installed in the connecting tube (2), a rubber tube (7) is fixedly installed on the first annular plate (6), an annular groove (15) is provided on the connecting tube (2) corresponding to the rubber tube (7), a first round tube (8) is fixedly installed on the rubber tube (7), a slider (17) is fixedly installed on the first round tube (8), a spiral groove (18) is provided on the connecting tube (2), the slider (17) is slidably installed in the spiral groove (18), a plurality of slots (9) evenly distributed on the circumference are provided on the first round tube (8), the slots (9) are respectively connected to the insertion rods (11) via the first springs (10), a second annular plate (12) is fixedly installed on the insertion rod (11), the second annular plate (12) is rotatably installed in the connecting tube (2), a spiral blade (14) is rotatably installed on the second annular plate (12) via a one-way bearing (13), the spiral blade (14) extends into the spray pipe (3) and is in sliding contact with the inner wall of the spray pipe (3).

2. The exhaust gas treatment spray pipe connection structure according to claim 1, characterized in that: An annular first airbag (20) is installed in the annular groove (15), annular grooves (21) are respectively provided at both ends of the connecting tube (2), second airbags (22) are respectively installed in the annular grooves (21), and the second airbags (22) are respectively connected to the first airbags (20).

3. The exhaust gas treatment spray pipe connection structure according to claim 1, characterized in that: The sealing cover (16) is provided with a through hole, a cross bar (30) with a thread is slidably installed in the through hole, a baffle (31) is installed in cooperation with the thread on the cross bar (30), a piston (32) is airtightly slidably installed in the spray pipe (3), the piston (32) is fixedly connected to the cross bar (30), and the piston (32) is elastically connected to the sealing cover (16) via a second spring (33).

4. The exhaust gas treatment spray pipe connection structure according to claim 3, characterized in that: A sealing plate (41) is fixedly mounted on the cross bar (30) via a connecting rod (40); a slag discharge hole (42) is provided on the spray pipe (3); and both the piston (32) and the sealing plate (41) are capable of closing the slag discharge hole (42).

5. The exhaust gas treatment spray pipe connection structure according to claim 2, characterized in that: A second circular tube (50) is fixedly mounted on the second annular plate (12); a first annular mounting groove (51) is provided on the second circular tube (50); a first sealing ring (52) is installed in the first mounting groove (51); the first sealing ring (52) is tightly fitted with the first circular tube (8); a second annular mounting groove (53) is provided on the first circular tube (8); a second sealing ring (54) is installed in the second mounting groove (53); the second sealing ring (54) is tightly fitted with the connecting tube (2).

6. The exhaust gas treatment spray pipe connection structure according to claim 5, characterized in that: The second circular tube (50) and the first annular plate (6) are respectively provided with inner rounded corners at one end close to the water supply pipe (1).

7. The exhaust gas treatment spray pipe connection structure according to claim 1, characterized in that: The spray pipe (3) is connected to the spray head (5) through a water through hole, and a filter screen plate (70) is fixedly installed in the water through hole.

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