Corrosion-resistant valve assembly for sulfuric acid preparation

Abstract

The utility model belongs to the technical field of valve assemblies, and particularly relates to a corrosion-resistant valve assembly for sulfuric acid preparation, which comprises a connecting pipe, a first connecting end and a second connecting end are arranged on two sides of the connecting pipe, a sealing seat is arranged above the connecting pipe, a top cover is arranged at the top of the sealing seat, a screw rod is arranged on the top cover, and the screw rod penetrates through the top cover and extends into the sealing seat. A pressing block is arranged at the bottom end of the lead screw, an inlet hole and an outlet hole are formed in the two sides of the connecting pipe correspondingly, a first outlet is formed in the upward end of the inlet hole, a second outlet is formed in the upward end of the outlet hole, a first flexible diaphragm piece is arranged above the first outlet, and a second flexible diaphragm piece is arranged above the second outlet. The adjacent ends of the first flexible diaphragm piece and the second flexible diaphragm piece are connected with the pressing block. According to the valve assembly, accumulation of sulfuric acid liquid in the valve assembly is reduced to a great extent, and therefore corrosion or damage to the valve assembly can be remarkably relieved.

Description

Technical Field

[0001] This utility model belongs to the field of valve assembly technology, specifically relating to a corrosion-resistant valve assembly for sulfuric acid preparation. Background Technology

[0002] The statements in this section are merely to provide background information related to the technical solutions of this application to aid understanding, and do not necessarily constitute prior art for the technical solutions of this application.

[0003] Sulfuric acid valves are widely used in coal chemical, petrochemical, rubber, papermaking, and pharmaceutical industries, serving as devices for diverting, merging, or switching the flow direction of sulfuric acid in pipelines. Sulfuric acid valves typically employ a top-entry design, reducing the number of connecting bolts on the valve body under high pressure and large diameter conditions, enhancing valve reliability, and overcoming the influence of system weight on normal valve operation. However, existing valve assemblies for sulfuric acid preparation usually only have a sealing pair formed between the valve seat and the valve ball. The inner bottom structure of the valve seat easily accumulates some sulfuric acid liquid. Prolonged residual sulfuric acid liquid can corrode the valve assembly, affecting sealing performance and leading to valve assembly damage. Utility Model Content

[0004] The purpose of this invention is to provide a corrosion-resistant valve assembly for sulfuric acid preparation to solve the above-mentioned problems.

[0005] According to one embodiment, a corrosion-resistant valve assembly for sulfuric acid preparation includes a connecting pipe with a first connecting end and a second connecting end on both sides. A sealing seat is provided above the connecting pipe, and a sealing plate is provided inside the sealing seat. A top cover is provided on the top cover, and a lead screw is provided on the top cover. A rotating rod is provided at the top end of the lead screw, which passes through the top cover and extends into the interior of the sealing seat. A pressure block is provided at the bottom end of the lead screw. An inlet and an outlet are provided on both sides of the connecting pipe. One end of the inlet is located at the first connecting end, and the other end faces upward. One end of the outlet is located at the second connecting end, and the other end faces upward. A first outlet is provided at the upward-facing end of the inlet, and a second outlet is provided at the upward-facing end of the outlet. The first outlet and the second outlet face the interior of the sealing seat. A first flexible diaphragm is provided above the first outlet, and a second flexible diaphragm is provided above the second outlet. The first flexible diaphragm and the second flexible diaphragm are adjacent to each other, and their adjacent ends are connected to the pressure block.

[0006] In one embodiment, one end of the first flexible diaphragm is fixedly connected to the upper side of the first outlet, and one end of the second flexible diaphragm is fixedly connected to the upper side of the second outlet.

[0007] In one embodiment, when the pressure block is lifted, the adjacent ends of the first flexible diaphragm and the second flexible diaphragm are lifted along with the pressure block, so that the first outlet communicates with the second outlet.

[0008] In one embodiment, when the pressure block is pressed down, the adjacent ends of the first flexible diaphragm and the second flexible diaphragm are pressed down along with the pressure block, thereby disconnecting the first outlet from the second outlet.

[0009] In one embodiment, the lead screw rotates through the sealing plate.

[0010] In one embodiment, adjacent ends of the first flexible diaphragm and the second flexible diaphragm are detachably connected to the pressure block.

[0011] In one embodiment, adjacent ends of the first flexible diaphragm and the second flexible diaphragm are fixedly connected to the pressure block.

[0012] In one embodiment, the first flexible diaphragm and the second flexible diaphragm are elastic.

[0013] In one embodiment, both the surface of the first flexible diaphragm and the second flexible diaphragm are coated with a corrosion-resistant layer.

[0014] The beneficial effects of this utility model are as follows: By reducing the bottom area between the first outlet and the second outlet, the valve assembly of this application greatly reduces the accumulation of sulfuric acid liquid inside the valve assembly, for example, the accumulation at the bottom of the inner side of the sealing seat, thereby significantly reducing the corrosion or damage to the valve assembly. Attached Figure Description

[0015] The embodiments of this utility model will be further described below with reference to the accompanying drawings, wherein:

[0016] Figure 1 This is a front structural schematic diagram of the corrosion-resistant valve assembly for sulfuric acid preparation according to the present invention.

[0017] Figure 2 This is a side view of the corrosion-resistant valve assembly for sulfuric acid preparation according to the present invention.

[0018] Figure 3 This is a front cross-sectional view of the corrosion-resistant valve assembly for sulfuric acid preparation according to this invention.

[0019] In the figure: 1. Connecting pipe; 2. First connecting end; 3. Second connecting end; 4. Sealing seat; 5. Top cover; 6. Lead screw; 7. Rotating rod; 8. Inlet hole; 9. First outlet hole; 10. Outlet hole; 11. Second outlet hole; 12. First flexible diaphragm; 13. Second flexible diaphragm; 14. Sealing sheet; 15. Pressure block. Detailed Implementation

[0020] 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 specific 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 scope of the present utility model.

[0021] Please see Figure 1-3 According to one embodiment of the present invention, a corrosion-resistant valve assembly for sulfuric acid preparation includes a connecting pipe 1, a first connecting end 2 and a second connecting end 3 on both sides of the connecting pipe 1, a sealing seat 4 above the connecting pipe 1, a sealing plate 14 inside the sealing seat 4, a top cover 5 on the top of the sealing seat 4, a lead screw 6 on the top cover 5, a rotating rod 7 at the top of the lead screw 6, the lead screw 6 passing through the top cover 5 and extending into the interior of the sealing seat 4, and a pressure block 15 at the bottom end of the lead screw 6.

[0022] The connecting pipe 1 has an inlet hole 8 and an outlet hole 10 on both sides. One end of the inlet hole 8 is located at the first connecting end 2, and the other end faces upward. One end of the outlet hole 10 is located at the second connecting end 3, and the other end faces upward. The upward-facing end of the inlet hole 8 has a first outlet 9, and the upward-facing end of the outlet hole 10 has a second outlet 11. The first outlet 9 and the second outlet 11 face the interior of the sealing seat 4. A first flexible diaphragm 12 is located above the first outlet 9, and a second flexible diaphragm 13 is located above the second outlet 11. The first flexible diaphragm 12 and the second flexible diaphragm 13 are adjacent to each other, and their adjacent ends are connected to the pressure block 15.

[0023] In one embodiment, one end of the first flexible diaphragm 12 is fixedly connected to the upper side of the first outlet 9, and one end of the second flexible diaphragm 13 is fixedly connected to the upper side of the second outlet 11.

[0024] Thus, when the pressure block 15 is raised, the adjacent ends of the first flexible diaphragm 12 and the second flexible diaphragm 13 follow the pressure block 15, thereby connecting the first outlet 9 and the second outlet 11. When the pressure block 15 is pressed down, the adjacent ends of the first flexible diaphragm 12 and the second flexible diaphragm 13 follow the pressure block 15, respectively closing the first outlet 9 and the second outlet 11, thereby disconnecting the first outlet 9 from the second outlet 11.

[0025] In one embodiment, the first connecting end 2 and the second connecting end 3 are fixedly installed on both sides of the connecting pipe 1, the sealing seat 4 is fixedly installed on the upper surface of the connecting pipe 1, the top cover 5 is fixedly connected to the top of the sealing seat 4, and the threaded surface of the top cover 5 rotates through the lead screw 6.

[0026] In one embodiment, the sealing sheet 14 is fixedly installed in the middle of the inner side of the sealing seat 4, the screw 6 rotates through the sealing sheet 14, and the pressure block 15 is located in the upper middle between the first flexible diaphragm sheet 12 and the second flexible diaphragm sheet 13.

[0027] In one embodiment, adjacent ends of the first flexible diaphragm 12 and the second flexible diaphragm 13 are detachably connected to the pressure block 15. In another embodiment, adjacent ends of the first flexible diaphragm 12 and the second flexible diaphragm 13 are fixedly connected to the pressure block 15.

[0028] In one embodiment, the first flexible diaphragm 12 and the second flexible diaphragm 13 are elastic. In another embodiment, the surfaces of both the first flexible diaphragm 12 and the second flexible diaphragm 13 are coated with a corrosion-resistant layer.

[0029] The first connection end 2 and the second connection end 3 facilitate the connection of the device to the pipeline.

[0030] By rotating the lead screw 6, the pressure block 15 can be moved up or down. When the pressure block 15 moves up, the first flexible diaphragm 12 and the second flexible diaphragm 13 lose their downward pressure, and the ends connected to the pressure block 15 will move up with the pressure block 15, thereby connecting the upper ends of the first outlet 9 and the second outlet 11. In this way, the sulfuric acid liquid inside the inlet 8 can enter the second outlet 11 from the first outlet 9 and flow into the outlet 10.

[0031] When it is necessary to block the sulfuric acid liquid, the screw 6 is rotated to move the pressure block 15 downward. The pressure block 15 will press down the ends of the first flexible diaphragm 12 and the second flexible diaphragm 13 below simultaneously, so that the first flexible diaphragm 12 and the second flexible diaphragm 13 respectively seal the upper ends of the first outlet 9 and the second outlet 11, thereby achieving the blocking effect.

[0032] The valve assembly of this application significantly reduces the accumulation of sulfuric acid liquid inside the valve assembly, such as the accumulation at the bottom inside the sealing seat, by reducing the bottom area adjacent to the first outlet 9 and the second outlet 11, thereby significantly mitigating corrosion or damage to the valve assembly.

[0033] References to “various embodiments,” “some embodiments,” “one embodiment,” or “embodiment” throughout this document refer to specific features, structures, or properties described in connection with said embodiments that are included in at least one embodiment. Therefore, the appearance of phrases such as “in various embodiments,” “in some embodiments,” “in one embodiment,” or “in an embodiment” throughout this document does not necessarily refer to the same embodiment. Furthermore, specific features, structures, or properties can be combined in any suitable manner in one or more embodiments. Therefore, specific features, structures, or properties shown or described in connection with one embodiment can be combined, in whole or in part, with features, structures, or properties of one or more other embodiments without limitation, provided that such combination is not illogical or inoperable. Expressions such as “according to A,” “based on A,” “by A,” or “using A” appearing throughout this document are non-exclusive; that is, “according to A” can cover “according to A only” or “according to A and B,” unless specifically stated otherwise. In this application, some illustrative operational steps are described in a certain order for clarity, but those skilled in the art will understand that each of these operational steps is not essential, and some steps can be omitted or replaced by others. These steps do not necessarily have to be performed sequentially as shown. Instead, some of these steps can be performed in different orders or in parallel as needed, as long as the new execution method is not illogical or ineffective.

[0034] The foregoing description describes some exemplary embodiments of this utility model. It is understood that the above embodiments are only used to explain this utility model and do not constitute a limitation on the scope of protection of this utility model. The features in these embodiments can be recombine in a suitable manner, and the resulting solutions are still within the scope of protection claimed by this utility model. Based on the above embodiments, all other embodiments obtained by those skilled in the art without inventive effort, that is, all modifications, equivalent substitutions, and improvements made within the spirit and principles of this application, fall within the scope of protection claimed by this utility model.

Claims

1. A corrosion resistant valve assembly for sulfuric acid production, characterized by, The utility model provides a kind of connecting pipe, the two sides of the connecting pipe (1) are equipped with first connecting end (2) and second connecting end (3), the top of the connecting pipe (1) is equipped with sealing seat (4), the inside of the sealing seat (4) is equipped with sealing sheet (14), the top of the sealing seat (4) is equipped with top cover (5), the top cover (5) is equipped with screw rod (6), the top end of the screw rod (6) is equipped with rotating rod (7), the screw rod (6) is through the top cover (5) and extends into the sealing seat (4) inside, the bottom end of the screw rod (6) is equipped with pressing block (15), the two sides of the connecting pipe (1) are equipped with inlet hole (8) and outlet hole (10) respectively, one end of the inlet hole (8) is located at the first connecting end (2), the other end is towards upwards, one end of the outlet hole (10) is located at the second connecting end (3), the other end is towards upwards, the upwards one end of the inlet hole (8) is equipped with first outlet (9), the upwards one end of the outlet hole (10) is equipped with second outlet (11), the first outlet (9) and the second outlet (11) are towards the inside of the sealing seat (4), the top of the first outlet (9) is equipped with first flexible diaphragm (12), the top of the second outlet (11) is equipped with second flexible diaphragm (13), the first flexible diaphragm (12) and the second flexible diaphragm (13) are adjacent, the adjacent end of the first flexible diaphragm (12) and the second flexible diaphragm (13) is connected with the pressing block (15).

2. A corrosion resistant valve assembly for sulphuric acid production according to claim 1, characterized in that One end of the first flexible diaphragm (12) is fixedly connected to the top side of the first outlet (9), one end of the second flexible diaphragm (13) is fixedly connected to the top side of the second outlet (11).

3. A corrosion resistant valve assembly for sulphuric acid production according to claim 1, characterized in that When the pressing block (15) is lifted, the adjacent end of the first flexible diaphragm (12) and the second flexible diaphragm (13) is lifted with the pressing block (15), so that the first outlet (9) and the second outlet (11) are communicated.

4. A corrosion resistant valve assembly for sulfuric acid production as claimed in claim 1, wherein, When the pressing block (15) is pressed down, the adjacent end of the first flexible diaphragm (12) and the second flexible diaphragm (13) is pressed down with the pressing block (15), so that the first outlet (9) and the second outlet (11) are disconnected.

5. A corrosion resistant valve assembly for sulfuric acid production as claimed in claim 1, wherein, The screw rod (6) rotates through the sealing sheet (14).

6. A corrosion resistant valve assembly for sulfuric acid production as claimed in claim 1, wherein, The adjacent end of the first flexible diaphragm (12) and the second flexible diaphragm (13) is detachably connected with the pressing block (15).

7. A corrosion resistant valve assembly for sulfuric acid production as claimed in claim 1, wherein The adjacent end of the first flexible diaphragm (12) and the second flexible diaphragm (13) is fixedly connected with the pressing block (15).

8. A corrosion resistant valve assembly for sulfuric acid production as claimed in claim 1, wherein, The first flexible diaphragm (12) and the second flexible diaphragm (13) are elastic.

9. A corrosion resistant valve assembly for sulfuric acid production as claimed in claim 1, wherein, The surface of the first flexible diaphragm (12) and the second flexible diaphragm (13) is coated with corrosion-resistant layer.

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