Diaphragm chamber structure of diaphragm pump

Abstract

A diaphragm chamber structure of a diaphragm pump belongs to the technical field of diaphragm pumps, and particularly relates to improvement of the diaphragm chamber structure of the diaphragm pump. The diaphragm chamber comprises a diaphragm chamber cover, a rubber diaphragm and a diaphragm cavity, and is characterized in that a cavity is arranged on one side of the diaphragm chamber cover, and a pressing part is arranged on the outer circumference of the cavity; a channel is formed in the other side of the diaphragm chamber cover; an inlet and an outlet are respectively formed in two ends of the channel; the cavity is communicated with the channel; a pressing groove corresponding to the pressing part is formed in the diaphragm cavity; and the edge of the rubber diaphragm is clamped and fixed through the mutual matching of the pressing part and the pressing groove. According to the utility model, the production cost and the maintenance cost are reduced, the structure is simple, and casting defects in the casting process are reduced.

Description

Technical Field

[0001] This utility model belongs to the field of diaphragm pump technology, and specifically relates to an improvement in the diaphragm chamber structure of a diaphragm pump. Background Technology

[0002] Against the backdrop of current industrial development, the hydrometallurgical zinc smelting and power battery material extraction industries are experiencing rapid growth, leading to an increasing market demand for acid-resistant diaphragm pumps. As a key piece of equipment in the hydrometallurgical zinc smelting process, the materials used for the flow-through components of the diaphragm pump not only need to possess excellent corrosion resistance to ensure long-term stable operation in acidic slurry solutions, but also need to withstand high-temperature operating environments to effectively mitigate the problem of accelerated acid corrosion caused by temperature increases.

[0003] As a key piece of equipment for conveying corrosive media, corrosion-resistant diaphragm pumps typically use stainless steel or titanium alloys for their flow-through components, as these materials exhibit excellent corrosion resistance. However, diaphragm pumps are large devices; their diaphragm chambers and covers are usually cast iron, resulting in large dimensions and significant weight. Traditional corrosion-resistant diaphragm pump structures are as follows: Figures 4-6 As shown, the diaphragm chamber cover 20 is provided with an insertion part 40, which cooperates with the diaphragm cavity 30. The insertion part 40 and the diaphragm cavity 30 together fix the rubber diaphragm 10. The diaphragm chamber 30 has an inlet and an outlet on both sides, and the insertion part 40 has through holes corresponding to the inlet and outlet. The medium enters through the inlet, flows through the through holes of the insertion part 40, and then flows out through the outlet. During operation in an acidic environment, both the diaphragm cavity and the diaphragm chamber cover are in contact with the transmission medium. This requires the use of stainless steel or titanium alloy for the two large castings of the diaphragm chamber, resulting in high manufacturing costs and susceptibility to corrosion, necessitating regular inspection and replacement. This not only increases the equipment manufacturing and maintenance costs but may also lead to prolonged equipment downtime due to the high maintenance difficulty, thereby affecting the continuous operation rate and profitability of the user's equipment. Utility Model Content

[0004] This utility model addresses the above-mentioned problems by providing a corrosion-resistant diaphragm pump diaphragm chamber structure.

[0005] This utility model adopts the following technical solution: it includes a diaphragm chamber cover, a rubber diaphragm, and a diaphragm cavity. The diaphragm chamber cover has a cavity on one side, with the outer circumference of the cavity forming a pressing part; a channel is provided on the other side of the diaphragm chamber cover, with an inlet and an outlet at each end; the cavity communicates with the channel; a pressing groove corresponding to the pressing part is provided inside the diaphragm cavity; and the edge of the rubber diaphragm is clamped and fixed by the cooperation of the pressing part and the pressing groove.

[0006] In a preferred embodiment of this utility model, the chamber of the diaphragm cover is connected to the channel through multiple suction holes.

[0007] Furthermore, the suction holes are configured to be at least three, with one corresponding to the inlet end and one to the outlet end of the channel, and the rest evenly distributed between the suction holes at the inlet end and the outlet end.

[0008] As another preferred embodiment of this utility model, a column is provided on one side of the diaphragm chamber cover, and the channel is disposed within the column.

[0009] Furthermore, reinforcing ribs are provided between the main body and the diaphragm chamber cover.

[0010] Furthermore, mounting plates are provided at both ends of the column, and connection holes are provided on the mounting plates.

[0011] As a third preferred embodiment of this utility model, the diaphragm cavity is made of carbon steel.

[0012] The beneficial effects of this utility model are as follows: 1. Due to the structural characteristics of this utility model, the rubber diaphragm blocks the medium, so that the medium and the diaphragm cavity do not come into contact at all. Ordinary carbon steel castings can be used instead of stainless steel castings, which reduces production costs.

[0013] 2. The diaphragm cavity does not come into direct contact with corrosive media, reducing the maintenance costs of daily inspection and replacement.

[0014] 3. The diaphragm cavity and diaphragm chamber cover have a simple structure, which reduces the occurrence of casting defects during the casting process.

[0015] 4. Due to the change in the structure of the diaphragm chamber cover, the number of bolts required for assembly is reduced, making installation and maintenance more convenient and labor-saving, reducing the number of steps required to disassemble and assemble the diaphragm chamber cover, and greatly improving the work efficiency of on-site personnel in installing and replacing vulnerable parts inside the diaphragm chamber.

[0016] 5. The medium transmission path of the diaphragm chamber cover is straightened instead of curved, which not only makes the processing easier, but also makes the medium flow direction in all parts of the diaphragm chamber basically consistent, avoiding the eddies caused by the change of medium direction in traditional diaphragm chambers, eliminating the possibility of cavitation, and effectively extending the service life of the diaphragm chamber cover.

[0017] 6. The overall weight of the diaphragm chamber is reduced, saving materials and lowering costs. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model.

[0019] Figure 2 yes Figure 1 The right view.

[0020] Figure 3 yes Figure 1 Top view.

[0021] Figure 4 This is a schematic diagram of the diaphragm chamber of an existing diaphragm pump.

[0022] Figure 5 for Figure 4 The right view.

[0023] Figure 6 for Figure 4 Top view.

[0024] In the attached diagram, 1 is the rubber diaphragm, 2 is the diaphragm chamber cover, 3 is the diaphragm cavity, 4 is the pressing part, 5 is the channel, 6 is the suction hole, 7 is the connecting hole, 8 is the mounting plate, 9 is the chamber, 10 is the pressing groove, 11 is the reinforcing rib, and 12 is the column. Detailed Implementation

[0025] This utility model includes a diaphragm chamber cover 2, a rubber diaphragm 1, and a diaphragm cavity 3. A cavity 9 is provided on one side of the diaphragm chamber cover 2, and a pressing part 4 is provided on the outer circumference of the cavity 9. A channel 5 is provided on the other side of the diaphragm chamber cover 2, with an inlet and an outlet at each end. The cavity 9 communicates with the channel 5. A pressing groove 10 corresponding to the pressing part 4 is provided inside the diaphragm cavity 3. The edge of the rubber diaphragm 1 is clamped and fixed by the cooperation of the pressing part 4 and the pressing groove 10. This structure achieves a reliable sealed connection between the rubber diaphragm 1 and the diaphragm cavity 3, effectively preventing corrosive media from contacting the diaphragm cavity 3, while simplifying the assembly process and improving production efficiency.

[0026] The diaphragm chamber cover 2 has a cavity 9 connected to the channel 5 via multiple suction holes 6. The multiple suction holes 6 improve the uniformity of the medium flow, reduce flow resistance, and enhance the flow efficiency of the medium inside the diaphragm pump.

[0027] The suction holes 6 are configured with at least three, one corresponding to the inlet and one to the outlet of the channel 5, with the remainder evenly distributed between the suction holes 6 at the inlet and outlet. This optimized layout of the suction holes 6 provides excellent flow rectification, improving the stability of the diaphragm pump's operation and its conveying efficiency.

[0028] A column 12 is provided on one side of the diaphragm chamber cover 2, and the channel 5 is disposed inside the column 12. Placing the channel 5 inside the compact column 12 helps reduce the overall structural volume while improving space utilization.

[0029] A reinforcing rib 11 is provided between the main body and the diaphragm chamber cover 2. This reduces the deformation of the diaphragm chamber cover 2 caused by pressure changes and prevents fatigue cracking of the diaphragm chamber cover 2.

[0030] The column 12 is provided with mounting plates 8 at both ends, and the mounting plates 8 are provided with connection holes 7.

[0031] The diaphragm cavity 3 is made of carbon steel. Using carbon steel can replace expensive stainless steel or titanium alloys, which can significantly reduce production costs while ensuring structural strength, thus facilitating the promotion and use of the equipment.

[0032] This invention replaces the traditional structure where the diaphragm, diaphragm cavity 3, and diaphragm cover 2 together form the chamber 9 in contact with the transmission medium. Instead, the diaphragm and diaphragm cover 2 together form the chamber 9, straightening the transmission path. Furthermore, the channel 5 is only machined on the diaphragm cover 2, simplifying the structure and reducing manufacturing costs. This straight transmission path eliminates the drawbacks of eddies and cavitation within the chamber 9. The traditional circular flange connection of the diaphragm cavity 3 channel 5 is replaced with a square end face connection of the diaphragm cover 2 channel 5, reducing the number of bolts and saving assembly time. The diaphragm cover 2 channel 5 is reinforced with horizontal ribs to reduce deformation caused by pressure changes and prevent fatigue cracking. The diaphragm cavity 3 has three evenly distributed suction holes 6 of the same diameter, reducing pulsation during repeated suction and rectifying the outflow of the medium at the outlet.

[0033] It is understood that the above specific description of this utility model is only used to illustrate this utility model and is not limited to the technical solutions described in the embodiments of this utility model. Those skilled in the art should understand that modifications or equivalent substitutions can still be made to this utility model to achieve the same technical effect; as long as the use needs are met, they are all within the protection scope of this utility model.

Claims

1. A diaphragm pump diaphragm chamber structure, comprising a diaphragm chamber cover (2), a rubber diaphragm (1), and a diaphragm cavity (3), characterized in that: A chamber (9) is provided on one side of the diaphragm chamber cover (2), and a pressing part (4) is provided on the outer circumference of the chamber (9); a channel (5) is provided on the other side of the diaphragm chamber cover (2), and the two ends of the channel (5) are the inlet and the outlet, respectively; the chamber (9) is connected to the channel (5); a pressing groove (10) corresponding to the pressing part (4) is provided inside the diaphragm cavity (3); the edge of the rubber diaphragm (1) is clamped and fixed by the pressing part (4) and the pressing groove (10) cooperating with each other.

2. The diaphragm chamber structure of a diaphragm pump according to claim 1, characterized in that: The chamber (9) of the diaphragm cover (2) is connected to the channel (5) through multiple suction holes (6).

3. The diaphragm chamber structure of a diaphragm pump according to claim 2, characterized in that: The suction holes (6) are set to at least 3, one at the inlet end and one at the outlet end of the channel (5), and the rest are evenly distributed between the suction holes (6) at the inlet end and the outlet end.

4. The diaphragm chamber structure of a diaphragm pump according to claim 1, characterized in that: A column (12) is provided on one side of the diaphragm chamber cover (2), and the channel (5) is provided inside the column (12).

5. The diaphragm chamber structure of a diaphragm pump according to claim 4, characterized in that: A reinforcing rib (11) is provided between the column (12) and the diaphragm chamber cover (2).

6. The diaphragm chamber structure of a diaphragm pump according to claim 4, characterized in that: The column (12) has mounting plates (8) at both ends, and the mounting plates (8) have connection holes (7).

7. The diaphragm chamber structure of a diaphragm pump according to claim 1, characterized in that: The diaphragm cavity (3) is made of carbon steel.

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