Electric diaphragm pump outer cavity and electric diaphragm pump comprising same

Abstract

The utility model provides an electric diaphragm pump outer cavity and an electric diaphragm pump comprising the same, the electric diaphragm pump outer cavity comprises a pump body, a pressing plate and a plurality of bearing beams, the pressing plate covers the pump body, the plurality of bearing beams are arranged on the pump body, the plurality of bearing beams are connected to the pressing plate, and the pressing plate and the bearing beams are fixed. The electric diaphragm pump comprises the outer cavity of the electric diaphragm pump. The bearing beam is arranged on the pump body, stress generated under the load of a temperature field and a pressure field in the pump body can be transmitted out, the pressing plate connected with the bearing beam is arranged, and the stress transmitted by the bearing beam can be transmitted to the pressing plate again, so that the stress is transmitted more uniformly, and stress concentration is prevented. Meanwhile, for the electric diaphragm pump made of non-metal materials, creep deformation caused by high temperature in the pump body can be transmitted out and evenly borne, and the temperature and pressure endurance capacity of the electric diaphragm pump is effectively improved.

Description

Technical Field

[0001] This utility model relates to the field of electric diaphragm pumps, and in particular to an outer cavity of an electric diaphragm pump and an electric diaphragm pump containing therein. Background Technology

[0002] Electric diaphragm pumps are devices used for fluid transfer and are crucial equipment in the production and manufacturing of chemicals, pharmaceuticals, coal mines, and semiconductors. The external cavity of an electric diaphragm pump typically mimics the structure of a pneumatic diaphragm pump. Traditional pneumatic diaphragm pumps generally use a flange structure, suitable for low-pressure and low-temperature applications. This is especially true for electric diaphragm pumps made of non-metallic materials, as the pressure and temperature inside the non-metallic cavity are relatively low, insufficient to cause creep and rigidity degradation in the non-metallic material. However, this design results in a weak cavity with extremely limited pressure resistance, limiting its use to low-pressure environments. Electric diaphragm pumps, with their wide range of applications and complex operating conditions, are difficult to widely adopt due to their low pressure resistance and susceptibility to creep at high temperatures. Utility Model Content

[0003] The technical problem to be solved by this utility model is to overcome the defects of existing electric diaphragm pumps, such as low pressure resistance and easy creep at high temperature, and to provide an electric diaphragm pump outer cavity and an electric diaphragm pump containing therein.

[0004] The present invention solves the above-mentioned technical problems through the following technical solution:

[0005] This utility model provides an outer cavity for an electric diaphragm pump, which includes a pump body, a pressure plate, and several supporting beams. The pressure plate covers the pump body, and the several supporting beams are disposed on the pump body and connected to the pressure plate, thereby fixing the pressure plate and the supporting beams together.

[0006] In this design, by installing a load-bearing beam on the pump body, the stress generated within the pump body under temperature and pressure loads can be transferred, thus providing more channels for relieving internal stress. Furthermore, a pressure plate connected to the load-bearing beam, which can be welded or detachably connected, allows the stress transmitted by the load-bearing beam to be transferred again to the pressure plate, resulting in more even stress distribution and preventing stress concentration. Simultaneously, for non-metallic electric diaphragm pumps, creep caused by high internal temperatures can also be transferred and evenly distributed, effectively improving the electric diaphragm pump's temperature and pressure tolerance.

[0007] Preferably, the side of the pressure plate facing the pump body is the first surface, and the end of one of the plurality of bearing beams facing the pressure plate matches the shape of the first surface so that the bearing beams fit against the pressure plate.

[0008] In this design, the side of the pressure plate facing the pump body is the first surface. The surface formed by several bearing beams facing one end of the pressure plate matches the shape of the first surface, which facilitates the bearing beams facing the pressure plate to fully contact and connect with the pressure plate, thereby further dispersing stress evenly.

[0009] Preferably, the first surface is a curved surface or a plane.

[0010] In this solution, when the first surface is curved, the surface formed by the corresponding load-bearing beams facing one end of the pressure plate is also curved, and the curved pressure plate can meet the needs of different scenarios. When the first surface is flat, the surface formed by the corresponding load-bearing beams facing one end of the pressure plate is also flat, and the flat pressure plate is easy to process, which helps to reduce costs.

[0011] Preferably, the pump body includes a pump cavity, and a plurality of the bearing beams are fixedly connected to the pump cavity, and the plurality of bearing beams are evenly arranged around the pump cavity.

[0012] In this solution, by fixing the load-bearing beams to the pump cavity, the stress in the pump cavity can be directly transmitted through the outer wall of the pump cavity, which shortens the stress transmission distance, improves the stress transmission efficiency, and further enhances the effect of preventing stress concentration.

[0013] Preferably, a connecting beam is provided between adjacent load-bearing beams, and the connecting beam is fixedly connected to the adjacent load-bearing beam.

[0014] In this scheme, by setting connecting beams between adjacent load-bearing beams and fixing the connecting beams to the load-bearing beams, the strength of the load-bearing beams can be improved, and the load-bearing beams can be made into a whole to further disperse stress.

[0015] Preferably, there are several connecting beams between adjacent load-bearing beams, and they are evenly arranged along the length of the load-bearing beams.

[0016] In this scheme, the uniformity of stress distribution can be further enhanced by setting multiple connecting beams and evenly distributing them along the length of the load-bearing beam.

[0017] Preferably, a fixing part is provided on the bearing beam, the fixing part is integrally formed on the bearing beam, and the fixing part is detachably connected to the pressure plate.

[0018] In this solution, by setting an integrally formed fixing part on the load-bearing beam and making the fixing part detachably connected to the pressure plate, the needs of replacing the pressure plate and facilitating maintenance and repair can be met.

[0019] Preferably, the fixing part is a bolt hole that passes through the load-bearing beam, and the pressure plate is also provided with bolt holes at the corresponding positions. The pressure plate is connected to the fixing part by bolts.

[0020] In this scheme, by setting bolt holes that penetrate the load-bearing beam, the length of the bolt connection can be increased, thereby increasing the contact area between the bolt and the load-bearing beam. This allows all the locking force of the bolts to be transferred to the pressure plate, increasing the efficiency of stress transmission and improving the stress transfer effect.

[0021] Preferably, the pressure plate is made of metal.

[0022] In this solution, by setting the pressure plate to be made of metal, since metal has high strength and good resistance to deformation and creep, especially for non-metallic electric diaphragm pumps, using a metal pressure plate can significantly improve the service life of non-metallic electric diaphragm pumps.

[0023] An electric diaphragm pump includes an electric diaphragm pump outer cavity as described above.

[0024] In this design, by installing a load-bearing beam on the pump body, the stress generated within the pump body under temperature and pressure loads can be transferred, thus providing more channels for relieving internal stress. Furthermore, a pressure plate connected to the load-bearing beam, which can be welded or detachably connected, allows the stress transmitted by the load-bearing beam to be transferred again to the pressure plate, resulting in more even stress distribution and preventing stress concentration. Simultaneously, for non-metallic electric diaphragm pumps, creep caused by high internal temperatures can also be transferred and evenly distributed, effectively improving the electric diaphragm pump's temperature and pressure tolerance.

[0025] The positive and progressive effects of this utility model are as follows:

[0026] The external cavity of this electric diaphragm pump utilizes a load-bearing beam on the pump body to transfer stress generated within the pump body under temperature and pressure loads, thus providing more channels for stress relief. Furthermore, a pressure plate connected to the load-bearing beam (either by welding or detachable connection) allows the stress transmitted by the beam to be transferred again to the pressure plate, resulting in more even stress distribution and preventing stress concentration. Simultaneously, for non-metallic electric diaphragm pumps, creep caused by high internal temperatures can also be transferred and evenly distributed, effectively improving the pump's temperature and pressure tolerance. Attached Figure Description

[0027] Figure 1 This is a front perspective view of an embodiment of the present utility model.

[0028] Figure 2 This is a front view of an embodiment of the present invention without the pressure plate assembled.

[0029] Figure 3This is a perspective view of the assembly of the pressure plate in an embodiment of the present invention.

[0030] Figure 4 This is a rear perspective view of an embodiment of the present utility model.

[0031] Explanation of reference numerals in the attached figures:

[0032] Electric diaphragm pump outer cavity 100

[0033] Pump body 1

[0034] Pressure plate 2

[0035] Bearing beam 3

[0036] Page 4

[0037] Pump inner cavity 5

[0038] Connecting beam 6

[0039] Fixing part 7

[0040] Bolt 8 Detailed Implementation

[0041] The present invention will be described more clearly and completely below with reference to the accompanying drawings, using a preferred embodiment.

[0042] This embodiment provides an external cavity 100 for an electric diaphragm pump, such as Figure 1-4 As shown, it includes a pump body 1, a pressure plate 2 and several bearing beams 3. The pressure plate 2 covers the pump body 1, and the several bearing beams 3 are set on the pump body 1. The several bearing beams 3 are connected to the pressure plate 2, so that the pressure plate 2 and the bearing beams 3 are fixed together.

[0043] Thus, by setting a bearing beam 3 on the pump body 1, the stress generated under the temperature and pressure fields within the pump body 1 can be transferred out, providing more channels for relieving internal stress. Furthermore, the pressure plate 2, connected to the bearing beam 3, can be welded or detachably connected, allowing the stress transmitted by the bearing beam 3 to be transferred back to the pressure plate 2, resulting in more uniform stress distribution and preventing stress concentration. Simultaneously, this electric diaphragm pump outer cavity 100 is suitable for both metallic and non-metallic electric diaphragm pumps. Especially in non-metallic electric diaphragm pumps, this outer cavity structure can not only transmit stress but also the high-temperature creep of non-metallic materials, thereby improving the sealing effect of the non-metallic diaphragm pump under high-temperature and high-pressure conditions and effectively enhancing its temperature and pressure tolerance.

[0044] In this embodiment, if the pump body 1 is made of metal, the corresponding support beam 3 is also made of metal; if the pump body 1 is made of non-metal, the corresponding support beam 3 is also made of non-metal. The support beam 3 and the pump body 1 can be welded or integrally formed. The support beam 3 and the pressure plate 2 can be connected by welding, bolts, riveting, bonding, or other methods to securely connect the support beam 3 and the pressure plate 2 into a whole.

[0045] Specifically, such as Figure 4 As shown, the side of the pressure plate 2 facing the pump body 1 is the first surface 4, and the end of several bearing beams 3 facing the pressure plate 2 matches the shape of the first surface 4 so that the bearing beams 3 and the pressure plate 2 fit together.

[0046] Thus, the side of the pressure plate 2 facing the pump body 1 is the first surface 4. The surface formed by the side of the several bearing beams 3 facing the pressure plate 2 matches the shape of the first surface 4, which makes it easy for the side of the bearing beams 3 facing the pressure plate 2 to fully contact and connect with the pressure plate 2, thereby further dispersing the stress evenly.

[0047] In this embodiment, the first surface 4 can be either curved or flat. When the first surface 4 is curved, the surface formed by the corresponding bearing beams 3 facing one end of the pressure plate 2 is also curved, and the curved pressure plate 2 can meet the needs of different scenarios. When the first surface 4 is flat, the surface formed by the corresponding bearing beams 3 facing one end of the pressure plate 2 is also flat, and the flat pressure plate 2 is easier to process, which helps to reduce costs.

[0048] Specifically, such as Figure 2 As shown, the pump body 1 includes a pump cavity 5, and several bearing beams 3 are fixedly connected to the pump cavity 5, and the several bearing beams 3 are evenly arranged around the pump cavity 5.

[0049] In this way, by fixing the bearing beams 3 to the pump cavity 5, the stress in the pump cavity 5 can be directly transmitted through the outer wall of the pump cavity 5, which shortens the stress transmission distance, improves the stress transmission efficiency, and further enhances the effect of preventing stress concentration.

[0050] In this embodiment, one end of several bearing beams 3 is welded to or integrally formed with the pump cavity 5 to achieve a fixed connection, and the other end of several bearing beams 3 is arranged radially and uniformly around the pump cavity 5.

[0051] Specifically, a connecting beam 6 is provided between adjacent load-bearing beams 3, and the connecting beam 6 is fixedly connected to the adjacent load-bearing beam 3.

[0052] Thus, by setting a connecting beam 6 between adjacent load-bearing beams 3 and fixing the connecting beam 6 to the load-bearing beam 3, the strength of the load-bearing beam 3 can be improved, and the load-bearing beams 3 can be integrated to further disperse stress.

[0053] In this embodiment, the connecting beam 6 can be a straight beam, an arc beam, or other shapes that those skilled in the art believe can satisfy the requirement of reinforcing the load-bearing beam 3. The connecting beam 6 and the load-bearing beam 3 can be fixedly connected by welding or integral molding.

[0054] Specifically, such as Figure 2 As shown, there are several connecting beams 6 between adjacent load-bearing beams 3, and they are evenly arranged along the length of the load-bearing beams 3.

[0055] Thus, by setting multiple connecting beams 6 and uniformly distributing them along the length of the load-bearing beam 3, the uniformity of stress distribution can be further enhanced.

[0056] In this embodiment, there are at least 10 supporting beams 3, preferably 12. There are at least 4 connecting beams 6, two of which are respectively located at the end of the supporting beam 3 away from the pump cavity 5 along its length and at the connection point with the pump cavity 5; the remaining connecting beams 6 are evenly distributed along the length of the supporting beam 3. Preferably, the connection points between adjacent connecting beams 6 are connected; preferably, the connecting beams 6 are arc-shaped beams, and the connection points between adjacent connecting beams 6 form a ring-shaped connecting beam 6 that intersects with the radially arranged supporting beams 3. With the increase in the number of connection points between adjacent supporting beams 3, the strength and stress transmission effect of the supporting beams 3 will be significantly improved.

[0057] Specifically, such as Figure 1-4 As shown, a fixing part 7 is provided on the bearing beam 3. The fixing part 7 is integrally formed on the bearing beam 3, and the fixing part 7 is detachably connected to the pressure plate 2.

[0058] Thus, by providing an integrally formed fixing part 7 on the load-bearing beam 3 and making the fixing part 7 detachably connected to the pressure plate 2, the needs of replacing the pressure plate 2 and facilitating maintenance and repair can be met.

[0059] In this embodiment, the fixing part 7 is a bolt hole 8 that penetrates the bearing beam 3. The fixing part 7 is located at the end of the bearing beam 3 away from the pump body 1 along its length. The pressure plate 2 also has bolt holes 8 at the corresponding positions, and the pressure plate 2 is connected to the fixing part 7 by bolts 8. By providing bolt holes 8 that penetrate the bearing beam 3, the length of the bolt connection 8 can be increased, thereby increasing the contact area between the bolts 8 and the bearing beam 3. This allows all the locking force of the bolts 8 to be transferred to the pressure plate 2, increasing the efficiency of stress transmission and improving the stress transmission effect. By setting the fixing part 7 at the end of the bearing beam 3 away from the pump body 1 along its length, the stress at the end of the bearing beam 3 is relatively large when transmitting stress, so setting the fixing part 7 at the end of the bearing beam 3 can further improve the stress transmission effect. In other embodiments, the fixing part 7 can also be other detachable connection methods that those skilled in the art believe meet the stress transmission requirements.

[0060] Specifically, the material of pressure plate 2 is metal.

[0061] Thus, by setting the material of the pressure plate 2 to metal, since metal has high strength and good resistance to deformation and creep, especially for non-metallic electric diaphragm pumps, using metal pressure plate 2 can significantly improve the service life of non-metallic electric diaphragm pumps.

[0062] In this embodiment, the material of the pressure plate 2 can also be other materials that have resistance to deformation and creep.

[0063] This embodiment also provides an electric diaphragm pump, which includes the electric diaphragm pump outer cavity 100 as described above.

[0064] Therefore, by setting a bearing beam 3 on the pump body 1, the stress generated under the internal temperature and pressure fields of the pump body 1 can be transferred out, thus providing more channels for relieving the internal stress of the pump body 1. In addition, a pressure plate 2 is set up to connect with the bearing beam 3. The pressure plate 2 can be connected to the bearing beam 3 by welding or detachable connection, so that the stress transmitted by the bearing beam 3 can be transferred to the pressure plate 2 again, thereby transmitting stress more evenly and helping to prevent stress concentration. At the same time, for electric diaphragm pumps made of non-metallic materials, the creep caused by high temperature inside the pump body 1 can also be transferred out and evenly borne, effectively improving the temperature and pressure resistance of the electric diaphragm pump.

[0065] While specific embodiments of this utility model have been described above, those skilled in the art should understand that these are merely illustrative examples, and the scope of protection of this utility model is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of this utility model, but all such changes and modifications fall within the scope of protection of this utility model.

Claims

1. An external cavity for an electric diaphragm pump, characterized in that, It includes a pump body, a pressure plate, and several supporting beams. The pressure plate covers the pump body, and the several supporting beams are disposed on the pump body and connected to the pressure plate, thereby fixing the pressure plate and the supporting beams together.

2. The outer cavity of the electric diaphragm pump as described in claim 1, characterized in that, The side of the pressure plate facing the pump body is the first surface, and the end of one of the several bearing beams facing the pressure plate matches the shape of the first surface so that the bearing beams fit against the pressure plate.

3. The external cavity of the electric diaphragm pump as described in claim 2, characterized in that, The first surface is either curved or flat.

4. The outer cavity of the electric diaphragm pump as described in claim 1, characterized in that, The pump body includes a pump cavity, and several of the bearing beams are fixedly connected to the pump cavity, and the several bearing beams are evenly arranged around the pump cavity.

5. The external cavity of the electric diaphragm pump as described in claim 1, characterized in that, A connecting beam is provided between adjacent load-bearing beams, and the connecting beam is fixedly connected to the adjacent load-bearing beam.

6. The outer cavity of the electric diaphragm pump as described in claim 5, characterized in that, There are several connecting beams between adjacent load-bearing beams, and they are evenly arranged along the length of the load-bearing beams.

7. The external cavity of the electric diaphragm pump as described in claim 1, characterized in that, A fixing part is provided on the bearing beam, the fixing part is integrally formed on the bearing beam, and the fixing part is detachably connected to the pressure plate.

8. The external cavity of the electric diaphragm pump as described in claim 7, characterized in that, The fixing part is a bolt hole that passes through the load-bearing beam, and the pressure plate is also provided with bolt holes at the corresponding positions. The pressure plate is connected to the fixing part by bolts.

9. The outer cavity of the electric diaphragm pump as described in claim 1, characterized in that, The pressure plate is made of metal.

10. An electric diaphragm pump, characterized in that, It includes the outer cavity of the electric diaphragm pump as described in any one of claims 1-9.

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