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 formed in 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. 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] The application belongs to the technical field of diaphragm pumps, and particularly relates to an improved diaphragm chamber structure of a diaphragm pump. BACKGROUND

[0002] Under the current industrial development background, the wet zinc leaching and power battery material extraction industry is showing a vigorous development trend, which makes the market demand for acid-resistant diaphragm pumps grow day by day. As a key equipment in the wet zinc leaching process, the flow component material of the diaphragm pump not only needs to have excellent corrosion resistance to ensure long-term stable operation in the acidic slurry solution, but also can work in a high-temperature environment to effectively slow down the problem of intensified acid corrosion caused by temperature rise.

[0003] As a key equipment for conveying corrosive media, the material selection of the flow component of the corrosion-resistant diaphragm pump is generally stainless steel or titanium alloy, which performs well in corrosion resistance. However, the diaphragm pump itself is a large equipment, and the diaphragm cavity and diaphragm chamber cover of the diaphragm chamber are usually castings, which are large in size and heavy in weight. As shown in the traditional corrosion-resistant diaphragm pump structure, Figures 4 to 6 The diaphragm chamber cover 20 is provided with an insertion part 40, the insertion part 40 cooperates with the diaphragm cavity 30, and the insertion part 40 and the diaphragm cavity 30 together fix the rubber diaphragm 10; the diaphragm chamber 30 is provided with an inlet and an outlet on both sides, and the insertion part 40 is provided with through holes corresponding to the inlet and the outlet; the medium enters from the inlet, passes through the through holes of the insertion part 40 and then flows out from the outlet, and the whole process is operated in an acidic environment, so that the diaphragm cavity and the diaphragm chamber cover are in contact with the transmission medium, resulting in that both large castings of the diaphragm chamber need to use stainless steel or titanium alloy medium, which is high in manufacturing cost and easy to be corroded, and needs to be regularly checked and replaced. This not only increases the equipment manufacturing cost and maintenance cost, but also may cause the equipment downtime to be prolonged due to high maintenance difficulty, thereby affecting the continuous operation rate and profit level of the user equipment. SUMMARY

[0004] The application is aimed at the above problems, and provides a corrosion-resistant diaphragm pump diaphragm chamber structure.

[0005] The application adopts the following technical scheme, and the application comprises a diaphragm chamber cover, a rubber diaphragm and a diaphragm cavity, characterized in that: one side of the diaphragm chamber cover is provided with a chamber, and the outer circumference of the chamber is provided as a compression part; the other side of the diaphragm chamber cover is provided with a channel, and the two ends of the channel are respectively an inlet and an outlet; the chamber and the channel are communicated; the diaphragm cavity is internally provided with a compression groove corresponding to the compression part; and the edge of the rubber diaphragm is clamped and fixed through the mutual cooperation of the compression part and the compression groove.

[0006] As a preferred scheme of the application, the chamber and the channel of the diaphragm chamber cover are communicated through a plurality of suction holes and the channel.

[0007] Further, the suction holes are arranged in at least three, one for each of the inlet end and the outlet end of the channel, and the rest are arranged between the suction holes of the inlet end and the outlet end.

[0008] As another preferred embodiment of the present application, the diaphragm chamber cover is provided with a column on one side, and the channel is arranged in the column.

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

[0010] Further, the column is provided with mounting discs at both ends, and the mounting discs are provided with connecting holes.

[0011] As a third preferred embodiment of the present application, the diaphragm cavity is made of carbon steel material.

[0012] The present application has the following advantages: 1. Due to the structural features of the present application, the rubber diaphragm blocks the medium, so that the medium does not contact the diaphragm cavity at all, and ordinary carbon steel castings can be used instead of stainless steel castings, thereby reducing the production cost.

[0013] 2. The diaphragm cavity does not directly contact the corrosive medium, thereby reducing the maintenance cost of daily inspection and replacement.

[0014] 3. The diaphragm cavity and the diaphragm chamber cover have simple structure, thereby reducing the generation of casting defects in the casting process.

[0015] 4. Due to the change of the structure of the diaphragm chamber cover, the number of bolts is reduced, the installation and maintenance are convenient and labor-saving, the process of disassembling and assembling the diaphragm chamber cover is reduced, and the working efficiency of the on-site workers in installing and replacing the internal vulnerable parts of the diaphragm chamber is greatly improved.

[0016] 5. The medium transmission path of the diaphragm chamber cover is changed from curved to straight, which not only facilitates processing, but also makes the medium flow direction of each part of the diaphragm chamber basically consistent, avoids the vortex generated by the change of the medium direction of the traditional diaphragm chamber, eliminates the possibility of cavitation, and effectively prolongs the service life of the diaphragm chamber cover.

[0017] 6. The overall weight of the diaphragm chamber is reduced, the material is saved, and the cost is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is a structural schematic view of the present application.

[0019] Figure 2 is a right view of Figure 1 .

[0020] Figure 3 is a top view of Figure 1 .

[0021] Figure 4 It is a structure diagram of the existing diaphragm pump diaphragm chamber.

[0022] Figure 5 It is a right view of Figure 4

[0023] Figure 6 It is a top view of Figure 4

[0024] In the drawing, 1 is a rubber diaphragm, 2 is a diaphragm chamber cover, 3 is a diaphragm cavity, 4 is a pressing part, 5 is a channel, 6 is a suction hole, 7 is a connecting hole, 8 is a mounting disc, 9 is a cavity, 10 is a pressing groove, 11 is a reinforcing rib, and 12 is a column. DETAILED DESCRIPTION

[0025] The application comprises a diaphragm chamber cover 2, a rubber diaphragm 1 and a diaphragm cavity 3, one side of the diaphragm chamber cover 2 is provided with a cavity 9, and the outer periphery of the cavity 9 is provided as a pressing part 4; the other side of the diaphragm chamber cover 2 is provided with a channel 5, and the two ends of the channel 5 are respectively an inlet and an outlet; the cavity 9 is communicated with the channel 5; the diaphragm cavity 3 is internally provided with a pressing groove 10 corresponding to the pressing part 4; and the edge of the rubber diaphragm 1 is clamped and fixed through mutual cooperation of the pressing part 4 and the pressing groove 10. The structure realizes reliable sealing connection between the rubber diaphragm 1 and the diaphragm cavity 3, effectively prevents corrosive medium from contacting the diaphragm cavity 3, and simultaneously simplifies the assembly process and improves production efficiency.

[0026] The cavity 9 of the diaphragm chamber cover 2 is communicated with the channel 5 through a plurality of suction holes 6. The plurality of suction holes 6 improve the uniformity of medium flow, reduce flow resistance and enhance the flow efficiency of the medium in the diaphragm pump.

[0027] The suction holes 6 are arranged as at least three, one is arranged at the inlet end and the outlet end of the channel 5 respectively, and the remaining suction holes 6 are uniformly arranged between the inlet end and the outlet end. The optimized layout of the suction holes 6 plays a good rectification role, improves the stability of the diaphragm pump operation and the conveying efficiency.

[0028] One side of the diaphragm chamber cover 2 is provided with a column 12, and the channel 5 is arranged in the column 12. Arranging the channel 5 in the compact column 12 helps to reduce the overall structure volume and improve the space utilization rate.

[0029] The reinforcing rib 11 is arranged between the main body and the diaphragm chamber cover 2. The reinforcing rib 11 reduces the deformation caused by the pressure change of the diaphragm chamber cover 2 and prevents fatigue cracking of the diaphragm chamber cover 2.

[0030] The mounting disc 8 is arranged at both ends of the column 12, and the connecting hole 7 is arranged on the mounting disc 8.

[0031] ​​The diaphragm cavity 3 is made of carbon steel material. The carbon steel material can replace expensive stainless steel or titanium alloy, which can greatly reduce the production cost while ensuring the structural strength, and is conducive to the promotion and use of the equipment.

[0032] The diaphragm, the diaphragm cavity 3 and the diaphragm chamber cover 2 jointly constitute the chamber 9 structure in contact with the transmission medium, which is changed to be jointly constituted by the diaphragm and the diaphragm chamber cover 2, the transmission medium chamber 9 structure path is changed from curved to straight, and the channel 5 is only machined on the diaphragm chamber cover 2, the structure is simple, the processing cost is reduced, and the straight medium transmission path eliminates the disadvantages of vortex and cavitation generated in the chamber 9. The upper and lower circular flange structure of the channel 5 of the traditional diaphragm cavity 3 is changed to the upper and lower square end surface structure of the channel 5 of the diaphragm chamber cover 2, the number of bolt installations is reduced, and the assembly time is saved. The diaphragm chamber cover 2 is provided with a horizontal rib structure around the channel 5, which reduces the deformation caused by the pressure change of the diaphragm chamber cover 2, and prevents the diaphragm chamber cover 2 from cracking due to fatigue. The diaphragm cavity 3 is provided with three evenly distributed suction holes 6 with the same diameter, which reduces the pulsation generated in the repeated suction process, and plays a rectifying role on the outlet medium flow state.

[0033] It can be understood that the above specific description of the present application is only used to illustrate the present application and is not limited to the technical solutions described in the embodiments of the present application. Those skilled in the art should understand that the present application can still be modified or replaced equivalently to achieve the same technical effect, as long as it meets the use requirements, which is within the protection scope of the present application.

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 the outer circumference of the chamber (9) is provided as a pressing portion (4); a channel (5) is provided on the other side of the diaphragm chamber cover (2), and the two ends of the channel (5) are respectively an inlet and an outlet; the chamber (9) is communicated with the channel (5); a pressing groove (10) corresponding to the pressing portion (4) is provided inside the diaphragm cavity (3); the edge of the rubber diaphragm (1) is clamped and fixed by the pressing portion (4) and the pressing groove (10) cooperating with each other.

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

3. The diaphragm pump diaphragm chamber structure according to claim 2, characterized in that: The material suction holes (6) are provided in at least three numbers, one corresponding to the inlet end and the outlet end of the channel (5), and the remaining ones are evenly distributed between the material suction holes (6) at the inlet end and the outlet end.

4. The diaphragm pump diaphragm chamber structure 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 in the column (12).

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

6. The diaphragm pump diaphragm chamber structure according to claim 4, characterized in that: Mounting plates (8) are provided at both ends of the column (12), and connecting holes (7) are provided on the mounting plates (8).

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

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