Pump shell suitable for double flow channels

Abstract

The pump shell comprises a first pump shell body, a second pump shell body is installed on the top of the first pump shell body through bolts, impellers are arranged on the opposite sides of the first pump shell body and the second pump shell body, a first flow guide channel is formed in the bottom of the inner wall of the first pump shell body, and a second flow guide channel is formed in the bottom of the second pump shell body. The first flow guide channel is located at the bottom of the impeller, and the second flow guide channel is located at the top of the impeller. The pump shell has the advantage of high efficiency, and the problems that in the using process of an existing pump shell, the flowing resistance of gas in the pump shell is large, the pumping efficiency of an impeller is reduced, the size of a flowing channel in the pump shell is large, and miniaturization of the pump shell is affected are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of circulating pumps, in particular to a pump casing suitable for double flow channels. Background Art

[0002] A high-pressure hydrogen circulation pump is a device specifically designed to transport hydrogen under high pressure. This pump is typically used in industrial applications requiring high-purity and high-pressure hydrogen, such as hydrogen fuel cell systems, petrochemical processes, and hydrogen energy storage and transportation. The dual-channel pump casing is a component of the high-pressure hydrogen circulation pump. An impeller is installed inside the pump casing, rotating to pressurize and discharge the gas entering the pump casing. The pump casing is equipped with a channel to guide the gas, and the shape of the channel matches the impeller, allowing the impeller to smoothly transport and pressurize the gas.

[0003] During use of the existing pump casing, the resistance to gas flow inside the pump casing is relatively large, which reduces the pumping efficiency of the impeller. In addition, the volume of the flow channel inside the pump casing is relatively large, which affects the miniaturization of the pump casing. Utility Model Content

[0004] The purpose of the utility model is to provide a pump casing suitable for double flow channels, which has the advantage of high efficiency and solves the problem that in the use of the existing pump casing, the resistance of the gas flow inside the pump casing is large, which reduces the pumping efficiency of the impeller, and the volume of the flow channel inside the pump casing is large, which affects the miniaturization of the pump casing.

[0005] To achieve the above object, the present invention provides the following technical solution: a pump housing suitable for dual flow channels, comprising a first pump housing, a second pump housing being mounted on the top of the first pump housing via bolts,

[0006] Impellers are provided on opposite sides of the first pump housing and the second pump housing. A first guide channel is provided at the bottom of the inner wall of the first pump housing, and a second guide channel is provided at the bottom of the second pump housing. The first guide channel is located at the bottom of the impeller, and the second guide channel is located at the top of the impeller.

[0007] An air inlet and outlet assembly is fixedly connected to the front side of the first pump housing, and an air inlet and an air outlet are provided on the air inlet and the outlet.

[0008] As a preferred pump casing suitable for dual flow channels of the present invention, a sealing ring is installed at the connection between the first pump casing and the second pump casing.

[0009] As a preferred pump casing suitable for dual flow channels of the present invention, an air outlet and an air inlet are provided on the front of the first pump casing, and a sealing gasket is fixedly connected to the front of the first pump casing. The air outlet and the air inlet are located inside the sealing gasket, and the front side of the sealing gasket is connected to the rear side of the inlet and outlet assembly.

[0010] As a preferred pump casing suitable for a double-flow channel of the present invention, an axial hole is opened at the center of the axial hole, and the axial hole accommodates the driving shaft of the impeller.

[0011] As a preferred pump casing suitable for dual flow channels of the present invention, an air inlet cavity and an air outlet cavity are provided inside the air inlet and outlet components, the air inlet cavity is respectively connected to the air inlet and the air inlet hole, and the air outlet cavity is respectively connected to the air outlet and the air outlet hole.

[0012] As a preferred pump casing suitable for dual flow channels of the present invention, a noise reduction filter assembly is fixedly connected to the front side of the first pump casing.

[0013] As a preferred pump casing suitable for dual flow channels of the present invention, the noise reduction filter assembly includes an air intake pipe, a threaded sleeve is fixedly connected to the rear side of the air intake pipe, an external threaded seat is threadedly connected to the inner wall of the threaded sleeve, the external threaded seat is fixedly installed on the air inlet and outlet components and is connected to the air inlet, a connecting flange is fixedly connected to the front side of the air intake pipe, a muffler is provided on the fixed sleeve on the surface of the air intake pipe, and the inside of the muffler is filled with porous sound-absorbing filler, a coarse filter is fixedly connected to the front side of the inner cavity of the air intake pipe, and a fine filter is fixedly connected to the rear side of the inner cavity of the air intake pipe.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0015] 1. The utility model can reduce the flow resistance of the gas through the coordinated use of the first guide channel and the second guide channel, making the pumping process of the impeller smoother, thereby improving the overall efficiency of the pump. The first guide channel and the second guide channel are located on the upper and lower sides of the impeller, which helps to improve the suction conditions of the gas, prevent the occurrence of cavitation, and help balance the forces acting on the impeller, reduce vibration and noise, and thus extend the service life of the pump. The first guide channel is integrated at the bottom of the inner cavity of the first pump casing, and the second guide channel is formed at the bottom of the second pump casing, which reduces the volume occupied by the first guide channel and the second guide channel, so that the pump casing can be miniaturized.

[0016] 2. The utility model can facilitate the inflow and outflow of gas by arranging the air inlet and outlet components. When the impeller is working, the external gas enters the air inlet cavity through the air inlet port, and enters the air inlet hole through the air inlet cavity. The gas passes through the air inlet hole and enters the air inlet end of the first guide channel and the second guide channel. The impeller rotates inside the first guide channel and the second guide channel. The blades on the impeller drive the gas to flow and pressurize inside the first guide channel and the second guide channel. The pressurized gas enters the air outlet end of the first guide channel and the second guide channel, passes through the air outlet hole and the air outlet cavity, and is finally discharged through the air outlet. The sealing gasket increases the sealing performance of the connection between the first pump casing and the air inlet and outlet components, and the sealing ring increases the sealing performance of the connection between the first pump casing and the second pump casing to prevent gas leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the cross-sectional structure of the utility model;

[0019] Figure 3 This is a schematic diagram of the first pump casing structure of the utility model;

[0020] Figure 4 This is a schematic diagram of the second pump casing structure of the utility model Figure 1 ;

[0021] Figure 5 This is a schematic diagram of the second pump casing structure of the utility model Figure 2 ;

[0022] Figure 6 This is a schematic diagram of the structure of the air inlet and outlet components of the utility model Figure 1 ;

[0023] Figure 7 This is a schematic diagram of the structure of the air inlet and outlet components of the utility model Figure 2 ;

[0024] Figure 8 This is a schematic diagram of the installation state of the noise reduction filter component of the utility model;

[0025] Figure 9 This is a schematic cross-sectional view of the noise reduction filter assembly of the present invention.

[0026] In the figure: 1. First pump casing; 2. Second pump casing; 3. Inlet and outlet components; 4. Impeller; 5. Sealing ring; 6. Noise reduction filter component; 7. First guide channel; 8. Air outlet; 9. Air inlet; 10. Sealing gasket; 11. Shaft hole; 12. Second guide channel; 13. Air inlet; 14. Air outlet; 15. Air outlet cavity; 16. Air inlet cavity; 601. Air inlet pipe; 602. Coarse filter; 603. Fine filter; 604. Connecting flange; 605. Muffler; 606. Porous sound-absorbing filler; 607. Threaded sleeve; 608. External threaded seat. DETAILED DESCRIPTION

[0027] Example 1

[0028] See also Figure 1-Figure 7 A pump casing suitable for a double flow channel includes a first pump casing 1, and a second pump casing 2 is mounted on the top of the first pump casing 1 by bolts.

[0029] Furthermore, an impeller 4 is provided on the opposite side of the first pump casing 1 and the second pump casing 2, a first guide channel 7 is opened at the bottom of the inner wall of the first pump casing 1, and a second guide channel 12 is opened at the bottom of the second pump casing 2. The first guide channel 7 is located at the bottom of the impeller 4, and the second guide channel 12 is located at the top of the impeller 4.

[0030] Furthermore, an air inlet and outlet assembly 3 is fixedly connected to the front side of the first pump housing 1 , and an air inlet 13 and an air outlet 14 are provided on the air inlet and outlet assembly 3 .

[0031] Furthermore, a sealing ring 5 is installed at the connection between the first pump housing 1 and the second pump housing 2 .

[0032] Furthermore, an air outlet 8 and an air inlet 9 are provided on the front of the first pump housing 1, and a sealing gasket 10 is fixedly connected to the front of the first pump housing 1. The air outlet 8 and the air inlet 9 are located inside the sealing gasket 10, and the front side of the sealing gasket 10 is connected to the rear side of the inlet and outlet assembly 3.

[0033] Furthermore, an axial hole 11 is opened at the center of the axial hole 11 , and the axial hole 11 accommodates the driving shaft of the impeller 4 .

[0034] Furthermore, an air inlet cavity 16 and an air outlet cavity 15 are provided inside the air inlet and outlet assembly 3 . The air inlet cavity 16 is communicated with the air inlet 13 and the air inlet hole 9 respectively, and the air outlet cavity 15 is communicated with the air outlet 14 and the air outlet hole 8 respectively.

[0035] By using the first guide channel 7 in conjunction with the second guide channel 12, the flow resistance of the gas can be reduced, making the pumping process of the impeller 4 smoother, thereby improving the overall efficiency of the pump. The first guide channel 7 and the second guide channel 12 are located on the upper and lower sides of the impeller 4, which helps to improve the gas suction conditions and prevent the occurrence of cavitation. It can also help balance the forces acting on the impeller 4, reduce vibration and noise, and thus extend the service life of the pump. The first guide channel 7 is integrated at the bottom of the inner cavity of the first pump casing 1, and the second guide channel 12 is formed at the bottom of the second pump casing 2, reducing the volume occupied by the first guide channel 7 and the second guide channel 12, so that the pump casing can be miniaturized.

[0036] By setting up the air inlet and outlet assembly 3, the air inlet and outlet can be facilitated. During the operation of the impeller 4, the external gas enters the air inlet chamber 16 through the air inlet 13, and enters the air inlet hole 9 through the air inlet chamber 16. The gas passes through the air inlet hole 9 and enters the air inlet end of the first guide channel 7 and the second guide channel 12. The impeller 4 rotates inside the first guide channel 7 and the second guide channel 12. The blades on the impeller 4 drive the gas to flow and pressurize inside the first guide channel 7 and the second guide channel 12. The pressurized gas enters the air outlet end of the first guide channel 7 and the second guide channel 12, passes through the air outlet hole 8 and the air outlet chamber 15, and is finally discharged through the air outlet 14. The sealing gasket 10 increases the sealing of the connection between the first pump housing 1 and the air inlet and outlet assembly 3, and the sealing ring 5 increases the sealing of the connection between the first pump housing 1 and the second pump housing 2 to prevent gas leakage.

[0037] Example 2

[0038] See also Figures 1-9 A pump casing suitable for a double flow channel includes a first pump casing 1, and a second pump casing 2 is mounted on the top of the first pump casing 1 by bolts.

[0039] Furthermore, an impeller 4 is provided on the opposite side of the first pump casing 1 and the second pump casing 2, a first guide channel 7 is opened at the bottom of the inner wall of the first pump casing 1, and a second guide channel 12 is opened at the bottom of the second pump casing 2. The first guide channel 7 is located at the bottom of the impeller 4, and the second guide channel 12 is located at the top of the impeller 4.

[0040] Furthermore, an air inlet and outlet assembly 3 is fixedly connected to the front side of the first pump housing 1 , and an air inlet 13 and an air outlet 14 are provided on the air inlet and outlet assembly 3 .

[0041] Furthermore, a sealing ring 5 is installed at the connection between the first pump housing 1 and the second pump housing 2 .

[0042] Furthermore, an air outlet 8 and an air inlet 9 are provided on the front of the first pump housing 1, and a sealing gasket 10 is fixedly connected to the front of the first pump housing 1. The air outlet 8 and the air inlet 9 are located inside the sealing gasket 10, and the front side of the sealing gasket 10 is connected to the rear side of the inlet and outlet assembly 3.

[0043] Furthermore, an axial hole 11 is opened at the center of the axial hole 11 , and the axial hole 11 accommodates the driving shaft of the impeller 4 .

[0044] Furthermore, an air inlet cavity 16 and an air outlet cavity 15 are provided inside the air inlet and outlet assembly 3 . The air inlet cavity 16 is communicated with the air inlet 13 and the air inlet hole 9 respectively, and the air outlet cavity 15 is communicated with the air outlet 14 and the air outlet hole 8 respectively.

[0045] Furthermore, a noise reduction filter assembly 6 is fixedly connected to the front side of the first pump housing 1 .

[0046] Furthermore, the noise reduction filter assembly 6 includes an air intake pipe 601, a threaded sleeve 607 is fixedly connected to the rear side of the air intake pipe 601, an external threaded seat 608 is threadedly connected to the inner wall of the threaded sleeve 607, the external threaded seat 608 is fixedly installed on the air inlet and outlet assembly 3 and is connected to the air inlet 13, a connecting flange 604 is fixedly connected to the front side of the air intake pipe 601, a muffler 605 is fixedly provided on the surface of the air intake pipe 601, and the interior of the muffler 605 is filled with porous sound-absorbing filler 606, a coarse filter screen 602 is fixedly connected to the front side of the inner cavity of the air intake pipe 601, and a fine filter screen 603 is fixedly connected to the rear side of the inner cavity of the air intake pipe 601.

[0047] The noise reduction filter assembly 6 filters and reduces noise for the gas entering the air inlet 13. The air inlet pipe 601 is connected to the air supply line through the connecting flange 604. After the gas enters the interior of the air inlet pipe 601, it first passes through the coarse filter 602 and then passes through the fine filter 603. The coarse filter 602 filters the large particles of impurities in the gas, and the fine filter 603 filters the small particles of impurities in the gas. The filtered gas passes through the external threaded seat 608 and enters the air inlet 13. During the flow of the gas inside the air inlet pipe 601, Noise is generated, and the silencer 605 and the porous sound-absorbing filler 606 absorb the generated noise. When the noise flows inside the porous sound-absorbing filler 606, the through holes on the porous sound-absorbing filler 606 convert the noise into heat energy to reduce the noise. When the coarse filter 602 and the fine filter 603 need to be disassembled for maintenance, the threaded sleeve 607 is unscrewed from the surface of the external threaded seat 608, the air intake pipe 601 is disassembled, and then the coarse filter 602 and the fine filter 603 inside the air intake pipe 601 are cleaned.

[0048] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A pump housing suitable for a dual flow channel, comprising a first pump housing (1), a second pump housing (2) being mounted on top of the first pump housing (1) by bolts, characterized in that: An impeller (4) is provided on one side of the first pump housing (1) and the second pump housing (2) opposite to each other; a first guide channel (7) is provided at the bottom of the inner wall of the first pump housing (1); a second guide channel (12) is provided at the bottom of the second pump housing (2); the first guide channel (7) is located at the bottom of the impeller (4), and the second guide channel (12) is located at the top of the impeller (4); An air inlet and outlet assembly (3) is fixedly connected to the front side of the first pump housing (1), and an air inlet (13) and an air outlet (14) are provided on the air inlet and outlet assembly (3).

2. A pump housing suitable for dual flow channels according to claim 1, characterized in that: A sealing ring (5) is installed at the connection between the first pump housing (1) and the second pump housing (2).

3. A pump housing suitable for dual flow channels according to claim 2, characterized in that: An air outlet (8) and an air inlet (9) are provided on the front of the first pump housing (1); a sealing gasket (10) is fixedly connected to the front of the first pump housing (1); the air outlet (8) and the air inlet (9) are located inside the sealing gasket (10); and the front side of the sealing gasket (10) is connected to the rear side of the air inlet and outlet assembly (3).

4. A pump housing suitable for dual flow channels according to claim 3, characterized in that: An axial hole (11) is provided at the center of the second pump housing (2), and the axial hole (11) accommodates the driving shaft of the impeller (4).

5. A pump housing suitable for dual flow channels according to claim 4, characterized in that: An air inlet cavity (16) and an air outlet cavity (15) are provided inside the air inlet and outlet assembly (3); the air inlet cavity (16) is communicated with the air inlet (13) and the air inlet hole (9) respectively; and the air outlet cavity (15) is communicated with the air outlet (14) and the air outlet hole (8) respectively.

6. A pump housing suitable for dual flow channels according to claim 5, characterized in that: A noise reduction filter assembly (6) is fixedly connected to the front side of the first pump housing (1).

7. A pump housing suitable for dual flow channels according to claim 6, characterized in that: The noise reduction filter assembly (6) comprises an air intake pipe (601), a threaded sleeve (607) fixedly connected to the rear side of the air intake pipe (601), an external threaded seat (608) threadedly connected to the inner wall of the threaded sleeve (607), the external threaded seat (608) fixedly mounted on the air intake and outlet assembly (3) and communicated with the air intake port (13), a connecting flange (604) fixedly connected to the front side of the air intake pipe (601), a muffler (605) fixedly provided on the surface of the air intake pipe (601), the interior of the muffler (605) being filled with a porous sound-absorbing filler (606), a coarse filter (602) fixedly connected to the front side of the inner cavity of the air intake pipe (601), and a fine filter (603) fixedly connected to the rear side of the inner cavity of the air intake pipe (601).

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