BSG acid-separation device

Abstract

The utility model relates to BSG acid -saving device field especially relates to a kind of BSG acid -saving device. Including liquid inlet constant pressure tank, the lower end of liquid inlet constant pressure tank is equipped with connecting pipe, the one end of connecting pipe away from liquid inlet constant pressure tank is equipped with liquid supplement valve, the one end of liquid supplement valve away from connecting pipe is fixedly connected with fixed pipe, the side of liquid inlet constant pressure tank close to fixed pipe is provided with two main grooves and two auxiliary grooves, two circulating pipes are fixedly connected between main groove and auxiliary groove, two circulating pipes are all connected with main groove and auxiliary groove, one of auxiliary groove is fixedly connected with fixed pipe, the lower surface of another auxiliary groove is equipped with adapter pipe, the one end of adapter pipe close to fixed pipe is equipped with pneumatic valve. The BSG acid -saving device provided by the utility model can stabilize pneumatic valve conveniently, improve the use efficiency of pneumatic valve, and greatly improve the service life of pneumatic valve.

Description

Technical Field

[0001] This utility model relates to the field of BSG acid-saving devices, and more particularly to a BSG acid-saving device. Background Technology

[0002] BSG acid-saving units are typically used to treat waste gases generated during industrial processes, especially acidic gases. Their main function is to remove harmful acidic components from waste gases through adsorption, chemical reactions, or other physicochemical methods, thereby protecting the environment and improving air quality.

[0003] Existing technologies, such as the invention with publication number CN107585744A, disclose a sulfuric acid concentration regulating device. This patent comprises a sulfuric acid condenser, a quench tower, an incinerator, an acid pump, a sulfuric acid intermediate tank, an acid cooler, and connecting pipelines, pumps, valves, and a control system. The sulfuric acid output pipeline of the sulfuric acid condenser is sequentially connected to the acid pump, the cooler, and the sulfuric acid intermediate tank. The condensing end pipeline of the sulfuric acid condenser is sequentially connected to the quench tower, the quench pump, and the incinerator. An online acidity analyzer is installed on the outlet pipeline of the acid pump. The outlet pipeline of the acid pump is connected to a return pipeline connected to the input pipeline of the incinerator inlet regulating valve. The regulating valve and the control signal terminal of the online acidity analyzer are connected to the control system via a control line.

[0004] The inventors discovered during use that in the prior art, the suspension of the pneumatic valve would affect the sealing between the valve and the connecting parts. The valve shaking would cause the sealing ring to loosen or shift, resulting in gas leakage, which would affect the efficiency and safety of the entire system. Moreover, during the shaking process, the wear of the connection between the valve and the pipeline would be accelerated due to the friction, which would not only shorten the service life of the valve, but also lead to more frequent maintenance and replacement. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies where pneumatic valves are suspended and difficult to fix.

[0006] To solve the above-mentioned technical problems, this utility model provides a BSG acid-saving device, comprising: a liquid inlet constant pressure tank, a connecting pipe installed at the lower end of the liquid inlet constant pressure tank, a replenishing valve installed at the end of the connecting pipe away from the liquid inlet constant pressure tank, a fixing pipe fixedly connected to the end of the replenishing valve away from the connecting pipe, two main tanks and two auxiliary tanks arranged on the side of the liquid inlet constant pressure tank near the fixing pipe, two circulation pipes fixedly connected between the main tanks and auxiliary tanks, both circulation pipes communicating with the main tanks and auxiliary tanks, one of the auxiliary tanks fixedly connected to the fixing pipe, a connecting pipe installed on the lower surface of the other auxiliary tank, a pneumatic valve installed at the end of the connecting pipe near the fixing pipe, and a... The device includes a connecting pipe with an auxiliary groove installed at the end away from the pneumatic valve. The auxiliary groove is fixedly connected to a secondary groove. A stabilizing structure is provided on the side of the auxiliary groove near the connecting pipe. The stabilizing structure includes a screw rod, which is fixedly connected to the auxiliary groove. A connecting plate is slidably connected to the arc surface of the screw rod. A connecting frame is fixedly connected to the upper end of the connecting plate. The connecting frame is interference-fitted with the pneumatic valve. A threaded ring is rotatably connected to the side of the connecting plate away from the auxiliary groove. The threaded ring is threadedly connected to the screw rod. Connecting rods are fixedly connected to both sides of the connecting frame. A slip ring is fixedly connected to the end of the connecting rod away from the connecting frame. A sliding rod is slidably connected to the inner wall of the slip ring. Both sliding rods are fixedly connected to the auxiliary groove.

[0007] The aforementioned components achieve the following effect: When stabilizing the pneumatic valve is required, rotating the threaded ring moves it, causing the connecting plate to slide on the arc surface of the screw. The connecting plate then moves the connecting frame, which in turn moves the two connecting rods. These rods then move the slip ring, which slides on the arc surface of the sliding rod. After reaching the appropriate position, the connecting frame is connected and fixed to the pneumatic valve. The connecting frame then stabilizes the pneumatic valve. When the main tank reaches the set number of plates, liquid replenishment begins. The replenishment valve is activated, and the constant pressure inlet tank replenishes liquid to the near-end auxiliary tank according to the set parameters. Simultaneously, the external replenishment valve opens, and then the far-end auxiliary tank is replenished. This avoids the need for constant discharge when the tank level becomes too high during replenishment. After the V28 acid replenishment is completed, the external replenishment valve closes simultaneously. Furthermore, since the HF concentration in the near-end main tank is much higher than that in the far-end main tank, replenishing the far-end main tank with acid from the near-end main tank effectively increases the acid concentration, thus eliminating the need for replenishment from the original constant pressure inlet tank. This secondary utilization of acid from the near-end main tank effectively reduces the overall acid consumption of the machine. Simultaneously, a PVD float switch is added to the near-end auxiliary tank. When the liquid level in the near-end main tank is too high, the external replenishment valve will be automatically activated to replenish the liquid to the far-end main tank through the newly added auxiliary tank, thus preventing the liquid level in the near-end main tank from being too high and causing a fixed discharge.

[0008] Preferably, the slide bar has a circular cross-section, and the two slide bars are distributed on both sides of the screw.

[0009] The effect achieved by the above components is that the slide bar can limit the connection frame and prevent the connection frame from shifting during use.

[0010] Preferably, an anti-slip sleeve is fixedly connected to the inner wall of the connecting frame, and the anti-slip sleeve is a rubber sleeve.

[0011] The effect achieved by the above components is that the anti-slip sleeve can increase the friction between the connecting frame and the pneumatic valve, and prevent slippage when the connecting frame and the pneumatic valve are connected.

[0012] Preferably, the arc surface of the threaded ring is provided with a plurality of slots, and the plurality of slots are evenly distributed on the threaded ring.

[0013] The effect achieved by the above components is that the groove can increase the friction between the hand and the threaded ring, preventing slippage when the threaded ring is rotated and moved.

[0014] Preferably, the arc surfaces of the connecting pipe and the connecting pipe are provided with a support structure, the support structure including two support rings, the two support rings being slidably connected to the connecting pipe and the connecting pipe respectively, a fixed rod and an auxiliary rod being fixedly connected to each side of the support ring, the auxiliary rod and the fixed rod being slidably connected to the slide rod, damping being provided between the auxiliary rod and the fixed rod and the slide rod, a lead screw being fixedly connected to the side of the two fixed rods that are close to each other, and a threaded pipe being threaded to the end of the two lead screws that are close to each other, the inner walls of the two ends of the threaded pipe having opposite threads, an auxiliary plate being rotatably connected to the arc surface of the threaded pipe, and the auxiliary plate being fixedly connected to the pneumatic valve.

[0015] The effect achieved by the above components is as follows: when it is necessary to support the connecting pipe and the connecting tube, the threaded pipe is rotated and moved. The threaded pipe rotates on the inner wall of the auxiliary plate, and the threaded pipe drives the lead screw to move. The lead screw drives the two fixed rods to move closer or further apart. The fixed rods slide on the arc surface of the slide rod. The fixed rods drive the support ring to move. Then the support ring supports the connecting pipe and the connecting tube, preventing the connecting pipe and the connecting tube from sagging and falling off the pneumatic valve.

[0016] Preferably, a protective sleeve is fixedly connected inside the support ring, and the protective sleeve has a circular cross-section.

[0017] The effect achieved by the above components is that the protective sleeve can protect the connecting pipe and the connecting pipe, and prevent excessive wear when the connecting pipe and the connecting pipe are connected.

[0018] Preferably, a round rod is fixedly connected to each of the two auxiliary rods on the side that is close to each other, and the same sleeve rod is slidably connected to the arc surface of the two round rods at the end that is close to each other.

[0019] The effect achieved by the above components is that when the two support rings approach or move away from each other, the round rod slides on the inner wall of the sleeve rod, and the round rod and the sleeve rod can limit the support rings.

[0020] Compared with related technologies, the BSG acid-saving device provided by this utility model has the following beneficial effects:

[0021] By setting a stable structure, the existing technology of suspending pneumatic valves can affect the sealing between the valve and the connecting parts. Valve shaking can cause the sealing ring to loosen or shift, resulting in gas leakage and affecting the efficiency and safety of the entire system. Moreover, during the shaking process, the wear of the valve and pipeline connection parts is accelerated due to friction. This not only shortens the service life of the valve but also leads to more frequent maintenance and replacement. This device can easily stabilize the pneumatic valve, increase its efficiency, and greatly improve its service life.

[0022] By setting up a support structure, the connecting pipe and the connecting tube can be easily supported, preventing the connecting pipe and the connecting tube from loosening with the pneumatic valve during use, and improving the stability of the connection between the connecting pipe and the connecting tube and the pneumatic valve. Attached Figure Description

[0023] Figure 1 A schematic diagram of the structure of a BSG acid-saving device provided by this utility model;

[0024] Figure 2 for Figure 1 The diagram shows a stable structure.

[0025] Figure 3 for Figure 2 The enlarged view at point A is shown below;

[0026] Figure 4 for Figure 1 The diagram shows the supporting structure.

[0027] Figure 5 for Figure 4 The enlarged view of point B shown.

[0028] Numbered in the diagram: 1. Inlet constant pressure tank; 2. Connecting pipe; 3. Replenishment valve; 4. Fixed pipe; 5. Main tank; 6. Circulation pipe; 7. Secondary tank; 8. Stabilizing structure; 81. Screw; 82. Sliding rod; 83. Connecting frame; 84. Slip ring; 85. Connecting plate; 86. Anti-slip sleeve; 87. Threaded ring; 88. Connecting rod; 89. Groove; 9. Support structure; 91. Support ring; 92. Fixed rod; 93. Auxiliary plate; 94. Threaded pipe; 95. Lead screw; 96. Sleeve rod; 97. Auxiliary rod; 98. Protective sleeve; 99. Round rod; 10. Auxiliary tank; 11. Pneumatic valve; 12. Connecting pipe; 13. Connecting pipe. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0030] The specific implementation of this utility model will be described in detail below with reference to specific embodiments.

[0031] Please see Figures 1 to 5 This utility model provides a BSG acid-saving device, comprising: a liquid inlet constant pressure tank 1, a connecting pipe 2 installed at the lower end of the liquid inlet constant pressure tank 1, a replenishing valve 3 installed at the end of the connecting pipe 2 away from the liquid inlet constant pressure tank 1, and a fixing pipe 4 fixedly connected to the end of the replenishing valve 3 away from the connecting pipe 2. Two main tanks 5 and two auxiliary tanks 7 are arranged on the side of the liquid inlet constant pressure tank 1 near the fixing pipe 4. Two circulation pipes 6 are fixedly connected between the main tanks 5 and the auxiliary tanks 7, and both circulation pipes 6 are connected to the main tanks 5 and the auxiliary tanks 7. One of the secondary grooves 7 is fixedly connected to the fixed pipe 4. The lower surface of the other secondary groove 7 is equipped with a connecting pipe 13. A pneumatic valve 11 is installed at the end of the connecting pipe 13 near the fixed pipe 4. A connecting pipe 12 is installed on the side of the pneumatic valve 11 away from the connecting pipe 13. An auxiliary groove 10 is installed at the end of the connecting pipe 12 away from the pneumatic valve 11. The auxiliary groove 10 is fixedly connected to the secondary groove 7. A stabilizing structure 8 is provided on the side of the auxiliary groove 10 near the connecting pipe 12. A supporting structure 9 is provided on the arc surface of the connecting pipe 12 and the connecting pipe 13.

[0032] In the embodiments of this utility model, please refer to Figure 2 and Figure 3The stabilizing structure 8 includes a screw 81, which is fixedly connected to the auxiliary groove 10. A connecting plate 85 is slidably connected to the arc surface of the screw 81. A connecting frame 83 is fixedly connected to the upper end of the connecting plate 85. The connecting frame 83 is interference-fitted to the pneumatic valve 11. A threaded ring 87 is rotatably connected to the side of the connecting plate 85 away from the auxiliary groove 10. The threaded ring 87 is threadedly connected to the screw 81. Connecting rods 88 are fixedly connected to both sides of the connecting frame 83. A slip ring 84 is fixedly connected to the end of the connecting rod 88 away from the connecting frame 83. A sliding rod 82 is slidably connected to the inner wall of the slip ring 84. Both sliding rods 82 are fixedly connected to the auxiliary groove 10. When it is necessary to stabilize the pneumatic valve 11, rotate the threaded ring 87 to move it. The threaded ring 87 drives the connecting plate 85 to slide on the arc surface of the screw 81. The connecting plate 85 drives the connecting frame 83 to move. The connecting frame 83 drives the two connecting rods 88 to move. The connecting rods 88 drive the slip ring 84 to move. The slip ring 84 slides on the arc surface of the sliding rod 82. After moving to the appropriate position, connect and fix the connecting frame 83 to the pneumatic valve 11. Then, the connecting frame 83 stabilizes the pneumatic valve 11. When the main tank 5 reaches the set number of plates, it starts to replenish liquid. The replenishment valve 3 is activated. The constant pressure tank 1 replenishes liquid to the near-end auxiliary tank 7 according to the set. At the same time, the external replenishment valve 3 is opened. Then, the far-end auxiliary tank 7 is replenished. This can avoid the tank liquid level from becoming too high and causing a fixed discharge. After the V28 acid replenishment is completed, the external replenishment valve 3 is closed at the same time. Meanwhile, since the HF concentration in the near-end main tank 5 is much higher than that in the far-end main tank 5, the acid added to the far-end main tank 5 through the near-end main tank 5 can effectively increase the acid concentration, thereby eliminating the need for replenishment from the original constant pressure tank 1. The secondary utilization of acid in the near-end main tank 5 can effectively reduce the overall acid consumption of the machine. Simultaneously, a PVD float switch is added to the near-end auxiliary tank 7. When the liquid level in the near-end main tank 5 is too high, the external replenishment valve 3 will automatically activate, replenishing the far-end main tank 5 through the newly added auxiliary tank 10. This simultaneously prevents the near-end main tank 5 from becoming too high and causing a fixed discharge. The cross-section of the slide rod 82 is circular, and two slide rods 82 are distributed on both sides of the screw 81. The slide rods 82 can limit the connection frame 83 to prevent it from shifting during use. The inner wall of the connection frame 83 is fixedly connected with an anti-slip sleeve 86, which is a rubber sleeve. The anti-slip sleeve 86 increases the friction between the connecting frame 83 and the pneumatic valve 11, preventing slippage during connection. The threaded ring 87 has several slots 89 evenly distributed on its arc surface. These slots 89 increase the friction between the hand and the threaded ring 87, preventing slippage during rotation.

[0033] In the embodiments of this utility model, please refer to Figure 1 , Figure 2 , Figure 4 and Figure 5The support structure 9 includes two support rings 91, which are slidably connected to the connecting pipe 12 and the connecting pipe 13, respectively. A fixed rod 92 and an auxiliary rod 97 are fixedly connected to both sides of the support ring 91. Both the auxiliary rod 97 and the fixed rod 92 are slidably connected to the slide rod 82. Damping is provided between the auxiliary rod 97 and the fixed rod 92 and the slide rod 82. A lead screw 95 is fixedly connected to the side of the two fixed rods 92 that are close to each other. A threaded tube 94 is threaded to the end of the two lead screws 95 that are close to each other. Opposite threads are opened on the inner walls of both ends of the threaded tube 94. An auxiliary plate 93 is rotatably connected to the arc surface of the threaded tube 94. The auxiliary plate 93 is fixedly connected to the pneumatic valve 11. When support is needed for the connecting pipe 12 and the connecting pipe 13, the threaded pipe 94 is rotated and moved. The threaded pipe 94 rotates on the inner wall of the auxiliary plate 93, driving the lead screw 95 to move. The lead screw 95 drives the two fixed rods 92 to move closer or further apart. The fixed rods 92 slide on the arc surface of the slide rod 82, driving the support ring 91 to move. Then, the support ring 91 supports the connecting pipe 12 and the connecting pipe 13, preventing them from sagging and falling off the pneumatic valve 11. A protective sleeve 98 is fixedly connected inside the support ring 91. The protective sleeve 98 has a circular cross-section. The protective sleeve 98 can protect the connecting pipe 12 and the connecting pipe 13, preventing excessive wear when the connecting pipe 12 and the connecting pipe 13 are connected. A round rod 99 is fixedly connected to the side of the two auxiliary rods 97 that are close to each other. The arc surface of the two round rods 99 that are close to each other is slidably connected to the same sleeve rod 96. When the two support rings 91 move closer or further apart, the round rod 99 slides on the inner wall of the sleeve rod 96, and the round rod 99 and the sleeve rod 96 can limit the support rings 91.

[0034] The working principle of the BSG acid-saving device provided by this utility model is as follows: When it is necessary to stabilize the pneumatic valve 11, the threaded ring 87 is rotated to move it. The threaded ring 87 drives the connecting plate 85 to slide on the arc surface of the screw 81. The connecting plate 85 drives the connecting frame 83 to move. The connecting frame 83 drives the two connecting rods 88 to move. The connecting rods 88 drive the slip ring 84 to move. The slip ring 84 slides on the arc surface of the sliding rod 82. After moving to the appropriate position, the connecting frame 83 is connected and fixed to the pneumatic valve 11. Then the connecting frame 83 stabilizes the pneumatic valve 11. When the main tank 5 reaches the set number of plates, it starts to replenish liquid. The replenishment valve 3 is activated. The constant pressure tank 1 replenishes liquid to the near-end auxiliary tank 7 according to the set. At the same time, the external replenishment valve 3 is opened. Then the far-end auxiliary tank 7 is replenished. This can avoid the tank liquid level from becoming too high due to replenishment and causing a fixed discharge. After the V28 acid replenishment is completed, the external replenishment valve 3 is closed at the same time. Meanwhile, since the HF concentration in the near-end main tank 5 is much higher than that in the far-end main tank 5, the acid added to the far-end main tank 5 through the near-end main tank 5 can effectively increase the acid concentration, thereby eliminating the need for replenishment from the original constant pressure tank 1. The secondary utilization of acid in the near-end main tank 5 can effectively reduce the overall acid consumption of the machine. Simultaneously, a PVD float switch is added to the near-end auxiliary tank 7. When the liquid level in the near-end main tank 5 is too high, the external replenishment valve 3 will be automatically activated to replenish the far-end main tank 5 through the newly added auxiliary tank 10, thus preventing the near-end main tank 5 from becoming too high and causing a fixed discharge. The slide bar 82 can limit the connection frame 83 to prevent it from shifting during use. The anti-slip sleeve 86 can increase the friction between the connection frame 83 and the pneumatic valve 11 to prevent slippage when the connection frame 83 is connected to the pneumatic valve 11. The slot 89 can increase the friction between the hand and the threaded ring 87 to prevent slippage when rotating the threaded ring 87 for movement.

[0035] When support is needed for the connecting pipe 12 and the connecting pipe 13, the threaded pipe 94 is rotated and moved. The threaded pipe 94 rotates on the inner wall of the auxiliary plate 93, and the threaded pipe 94 drives the lead screw 95 to move. The lead screw 95 drives the two fixed rods 92 to move closer or further apart. The fixed rods 92 slide on the arc surface of the slide rod 82. The fixed rods 92 drive the support ring 91 to move. Then the support ring 91 supports the connecting pipe 12 and the connecting pipe 13 to prevent the connecting pipe 12 and the connecting pipe 13 from sagging and falling off the pneumatic valve 11. The protective sleeve 98 can protect the connecting pipe 12 and the connecting pipe 13 to prevent excessive wear when the connecting pipe 2 and the connecting pipe 13 are connected. When the two support rings 91 move closer or further apart, the round rod 99 slides on the inner wall of the sleeve rod 96. The round rod 99 and the sleeve rod 96 can limit the support ring 91.

[0036] The circuits and controls involved in this utility model are all existing technologies, and will not be described in detail here.

[0037] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A BSG acid-saving device, characterized in that, include: A liquid inlet constant pressure tank (1) is provided, with a connecting pipe (2) installed at the lower end of the liquid inlet constant pressure tank (1). A replenishing valve (3) is installed at the end of the connecting pipe (2) away from the liquid inlet constant pressure tank (1). A fixing pipe (4) is fixedly connected to the end of the replenishing valve (3) away from the connecting pipe (2). Two main tanks (5) and two auxiliary tanks (7) are provided on the side of the liquid inlet constant pressure tank (1) near the fixing pipe (4). Two circulation pipes (6) are fixedly connected between the main tanks (5) and the auxiliary tanks (7). Both circulation pipes (6) are connected to the main tank (5) and the secondary tank (7). One of the secondary tanks (7) is fixedly connected to the fixed pipe (4). A connecting pipe (13) is installed on the lower surface of the other secondary tank (7). A pneumatic valve (11) is installed at the end of the connecting pipe (13) near the fixed pipe (4). A connecting pipe (12) is installed on the side of the pneumatic valve (11) away from the connecting pipe (13). An auxiliary device is installed at the end of the connecting pipe (12) away from the pneumatic valve (11). The auxiliary groove (10) is fixedly connected to the secondary groove (7). A stabilizing structure (8) is provided on the side of the auxiliary groove (10) near the connecting pipe (12). The stabilizing structure (8) includes a screw (81), which is fixedly connected to the auxiliary groove (10). A connecting plate (85) is slidably connected to the arc surface of the screw (81). A connecting frame (83) is fixedly connected to the upper end of the connecting plate (85). The connecting frame (83) is connected to the pneumatic valve (11) via... The connecting plate (85) is rotatably connected to a threaded ring (87) on the side away from the auxiliary groove (10). The threaded ring (87) is threadedly connected to the screw (81). The connecting frame (83) is fixedly connected to both sides of the connecting rod (88). The end of the connecting rod (88) away from the connecting frame (83) is fixedly connected to a slip ring (84). The inner wall of the slip ring (84) is slidably connected to a slide rod (82). Both slide rods (82) are fixedly connected to the auxiliary groove (10).

2. The BSG acid-saving device according to claim 1, characterized in that, The slide bar (82) has a circular cross-section, and the two slide bars (82) are distributed on both sides of the screw (81).

3. The BSG acid-saving device according to claim 1, characterized in that, The inner wall of the connecting frame (83) is fixedly connected with an anti-slip sleeve (86), which is a rubber sleeve.

4. The BSG acid-saving device according to claim 1, characterized in that, The threaded ring (87) has a plurality of slots (89) on its arc surface, and the plurality of slots (89) are evenly distributed on the threaded ring (87).

5. A BSG acid-saving device according to claim 1, characterized in that, The arc surfaces of the connecting pipe (12) and the connecting pipe (13) are provided with a support structure (9). The support structure (9) includes two support rings (91). The two support rings (91) are slidably connected to the connecting pipe (12) and the connecting pipe (13) respectively. A fixed rod (92) and an auxiliary rod (97) are fixedly connected to both sides of the support ring (91). The auxiliary rod (97) and the fixed rod (92) are both slidably connected to the sliding rod (82). 7) Damping is provided between the fixed rod (92) and the sliding rod (82). The two fixed rods (92) are fixedly connected to the side of each other with a lead screw (95). The two lead screws (95) are threaded to the end of each other with a threaded tube (94). The inner walls of the two ends of the threaded tube (94) are provided with opposite threads. The arc surface of the threaded tube (94) is rotatably connected to an auxiliary plate (93). The auxiliary plate (93) is fixedly connected to the pneumatic valve (11).

6. A BSG acid-saving device according to claim 5, characterized in that, The support ring (91) is fixedly connected to a protective sleeve (98), and the protective sleeve (98) has a circular cross-section.

7. A BSG acid-saving device according to claim 5, characterized in that, Both auxiliary rods (97) are fixedly connected to a round rod (99) on their sides that are close to each other, and the two round rods (99) are slidably connected to the same sleeve rod (96) on their arc surfaces that are close to each other.

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