Centrifugal pump volute structure

Abstract

The utility model discloses a centrifugal pump volute structure relates to centrifugal pump technical field, including pump body, the impeller is rotatively connected in pump body inside, and the base assembly is set up to pump body bottom, and the pump body detachable installation is in base assembly top, and one side of pump body is provided with installation cavity groove, and the seal pad is set up to installation cavity groove inner wall, and the overhauling cover is set up to one side of installation cavity groove, and the fixed joint of sealing ring body is provided with one side of overhauling cover, and sealing ring body is connected in the inside of installation cavity groove, and the outer periphery of sealing ring body is tightly combined in installation cavity groove inner wall, the fixed joint of rubber board is provided with base assembly bottom, and the installation cavity is provided with base assembly top, and the rubber pad is set up to installation cavity top surface, and the clamping mechanism is set up to one side of base assembly, through installation component, the operator is convenient to split and install with base of pump body, and then the user is convenient to carry out the overhauling maintenance work to pump body inside, instead of traditional centrifugal pump body is fixedly installed on the base, and the flexibility of lifting device is improved.

Description

Technical Field

[0001] This utility model relates to the field of centrifugal pump technology, specifically to a centrifugal pump volute structure. Background Technology

[0002] Centrifugal pumps, as an important fluid transport machine, are increasingly widely used in chemical, petroleum, power, metallurgy, coal and aerospace fields. The volute of a centrifugal pump is a part of the centrifugal pump used to guide the fluid into the pump impeller and increase the pump pressure. The volute is usually a special curved shell, also known as a spiral shell. It is located at the inlet of the centrifugal pump and plays the role of guiding fluid flow and increasing pressure. The volute pump is an important category of centrifugal pumps. Its core feature is the use of a spiral pump shell structure. Volute pumps are generally made of cast iron or stainless steel.

[0003] According to the search, Chinese patent application number CN201921994029.0 relates to the field of centrifugal pump technology and discloses a centrifugal pump volute, including a centrifugal pump body and a base, with the centrifugal pump body fixedly installed on the base; when the centrifugal pump is working normally, the first and second noise-reducing components achieve the effect of repeated noise reduction, and finally achieve the purpose of eliminating low-frequency noise.

[0004] It can be seen that the above-mentioned patent has the following shortcomings: the traditional centrifugal pump body is fixedly installed on the base, which makes it inconvenient for the operator to separate the pump body from the base, thus making it inconvenient for users to carry out internal inspection and maintenance work on the pump body, reducing the flexibility of the device and failing to meet the needs of more customers.

[0005] To address the aforementioned issues, a centrifugal pump volute structure is proposed. Utility Model Content

[0006] The purpose of this utility model is to provide a centrifugal pump volute structure. By using this device, the problem of the traditional centrifugal pump volute and pump base being fixedly installed, which makes it inconvenient for the operator to separate the pump body from the base, thus making it inconvenient for users to carry out internal inspection and maintenance work on the pump body, reducing the flexibility of the device, and failing to meet the needs of more customers is solved.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a centrifugal pump volute structure, including a pump body, an impeller rotatably connected inside the pump body, a base assembly at the bottom of the pump body, the pump body being detachably mounted on the top of the base assembly, an installation cavity groove on one side of the pump body, a sealing gasket on the inner wall of the installation cavity groove, a maintenance cover on one side of the installation cavity groove, a sealing ring fixedly connected to one side of the maintenance cover, the sealing ring being engaged with the inside of the installation cavity groove, and the outer periphery of the sealing ring tightly fitting against the inner wall of the installation cavity groove; a rubber plate fixedly connected to the bottom of the base assembly, an installation cavity on the top of the base assembly, a rubber gasket on the top surface of the installation cavity, and a locking mechanism on one side of the base assembly, with two sets of locking mechanisms.

[0008] Preferably, a threaded cavity is provided on one side of the pump body, and two sets of threaded cavities are provided; a bolt component is threadedly connected to one side of the inspection cover, and two sets of bolt components are provided.

[0009] The above-mentioned structural design provides a foundation for connecting the maintenance cover and the pump body through the corresponding engagement of two sets of bolt components and two sets of threaded holes, facilitating the subsequent quick disassembly and assembly of the maintenance cover.

[0010] Preferably, the bolt component is matched with the corresponding threaded hole position, and the bolt component is threadedly connected to the threaded hole.

[0011] The above-mentioned structural design ensures that the bolt components are precisely screwed into the threaded hole cavity, strengthens the tightness of the connection between the inspection cover and the pump body, helps to improve the sealing effect, and prevents fluid leakage.

[0012] Preferably, the engaging mechanism includes a knob rotatably connected to the top surface of the base assembly, a first bevel gear rotatably connected inside the base assembly, the first bevel gear being fixedly connected to the knob via a connecting rod, a second bevel gear meshing with one side of the first bevel gear, and the second bevel gear rotatably connected inside the base assembly.

[0013] The design of the above structure, through the transmission cooperation of the knob, bevel gear one and bevel gear two, realizes the conversion of power direction, and transmits the rotational power of the knob to the subsequent components, providing power support for the action of the locking block.

[0014] Preferably, a threaded rod is fixedly connected to one side of the bevel gear, the threaded rod is rotatably connected to the inside of the base assembly, and a locking block is threadedly connected to the outer circumference of the threaded rod, the locking block being slidably connected to the inside of the base assembly.

[0015] The above-described structure can convert the rotational motion of the bevel gear into the axial sliding motion of the locking block, thereby enabling the locking block to extend and retract, and meeting the requirements for locking or unlocking the pump body and the base assembly.

[0016] Preferably, a pump support is provided on one side of the pump body, the pump support is snapped into the inside of the mounting cavity, and slots are provided on both the left and right sides of the pump support, with the locking block matching the corresponding slot.

[0017] The above-mentioned structural design allows for the initial positioning of the pump body by engaging the pump support with the mounting cavity, while the matching of the slot and the locking block ensures precise locking and a stable connection between the pump body and the base assembly.

[0018] Preferably, the bottom surface of the pump support is tightly fitted to the top surface of the rubber pad.

[0019] With the above-mentioned structural design, the rubber pad can buffer the vibration of the pump body during operation, while enhancing the fit and sealing between the pump support and the mounting cavity, reducing the impact of vibration on the device.

[0020] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0021] 1. The centrifugal pump volute structure of this application, through the installation components, makes it convenient for the operator to disassemble and install the pump body and the base, thereby facilitating the user to carry out internal maintenance work on the pump body, instead of the traditional centrifugal pump body being fixedly installed on the base, improving the flexibility of the device and meeting the needs of more customers.

[0022] 2. The centrifugal pump volute structure of this application has an inspection cover that is easy to remove from one side of the pump body, which facilitates the user to maintain the inside of the pump body. The design of the sealing ring increases the sealing between the inspection cover and the pump body, improving the practicality of the device.

[0023] 3. A centrifugal pump volute structure of this application, wherein a rubber pad is provided between the pump body and the base body, and a rubber plate is provided at the bottom of the pump base to improve the support stability of the pump. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0025] Figure 2 This is a disassembled structural diagram of the pump body and inspection cover of this utility model;

[0026] Figure 3 This is a structural diagram of the inspection cover and sealing ring of this utility model;

[0027] Figure 4 This is an exploded structural diagram of the pump body assembly and base assembly of this utility model;

[0028] Figure 5 This is a structural diagram of the engaging component in the installation assembly of this utility model.

[0029] In the diagram: 1. Pump body; 2. Base assembly; 11. Inspection cover; 12. Mounting cavity; 15. Threaded hole cavity; 13. Bolt assembly; 14. Sealing ring; 21. Rubber plate; 22. Pump support; 23. Slot; 24. Knob; 25. Mounting cavity; 26. Rubber pad; 27. Bevel gear one; 28. Bevel gear two; 29. ​​Threaded rod; 231. Locking block. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0031] To further understand the content of this utility model, a detailed description of this utility model will be provided in conjunction with the accompanying drawings.

[0032] Combination Figures 1-5 A centrifugal pump volute structure includes a pump body 1, an impeller rotatably connected inside the pump body 1, a base assembly 2 at the bottom of the pump body 1, the pump body 1 being detachably mounted on the top of the base assembly 2, an installation groove 12 on one side of the pump body 1, a sealing gasket on the inner wall of the installation groove 12, a maintenance cover 11 on one side of the installation groove 12, a sealing ring 14 fixedly connected to one side of the maintenance cover 11, the sealing ring 14 engaging with the inside of the installation groove 12, and the outer circumference of the sealing ring 14 tightly fitting against the inner wall of the installation groove 12; a rubber plate 21 fixedly connected to the bottom of the base assembly 2, an installation cavity 25 at the top of the base assembly 2, a rubber pad 26 on the top surface of the installation cavity 25, and a locking mechanism on one side of the base assembly 2, with two sets of locking mechanisms.

[0033] The present invention will be further described below with reference to the embodiments.

[0034] Example:

[0035] The pump body 1 has a threaded cavity 15 on one side, and there are two sets of threaded cavities 15. The inspection cover 11 has a bolt component 13 threadedly connected on one side, and there are two sets of bolt components 13.

[0036] The bolt component 13 is matched with the corresponding threaded cavity 15, and the bolt component 13 is threadedly connected to the threaded cavity 15.

[0037] The engaging mechanism includes a knob 24 rotatably connected to the top surface of the base assembly 2, a bevel gear 27 rotatably connected inside the base assembly 2, the bevel gear 27 being fixedly connected to the knob 24 via a connecting rod, and a bevel gear 28 meshing with one side of the bevel gear 27, the bevel gear 28 being rotatably connected inside the base assembly 2.

[0038] A threaded rod 29 is fixedly connected to one side of the bevel gear 28. The threaded rod 29 is rotatably connected to the inside of the base assembly 2. A locking block 231 is threadedly connected to the outer circumference of the threaded rod 29. The locking block 231 is slidably connected to the inside of the base assembly 2.

[0039] A pump support 22 is provided on one side of the pump body 1. The pump support 22 is snapped into the installation cavity 25. Slots 23 are provided on both the left and right sides of the pump support 22. The locking block 231 matches the corresponding slot 23.

[0040] The bottom surface of the pump support 22 is tightly attached to the top surface of the rubber pad 26.

[0041] In summary, the working principle is as follows: When this practical pump is in use, the fluid to be transported enters the volute through the inlet end of the pump body 1. The impeller, which is rotatably connected inside the pump body 1, rotates at high speed under the drive of an external power source. When the impeller rotates, it generates centrifugal force on the fluid through the blades, causing the fluid to rotate synchronously with the impeller, thus giving the fluid kinetic energy. The fluid, which has converted kinetic energy into pressure energy and gained kinetic energy, is thrown out radially along the impeller under the action of centrifugal force and enters the volute flow channel of the pump body 1.

[0042] During this process, the seal between the inspection cover 11 and the pump body 1 is ensured by the following structure: the sealing ring 14 on one side of the inspection cover 11 engages with the mounting cavity 12 of the pump body 1, and the inner wall of the mounting cavity 12 is provided with a sealing gasket. The two fit tightly together, effectively preventing fluid leakage from the inspection cover 11 during transportation and ensuring pressurization efficiency. When the inspection cover 11 needs to be separated from the pump body 1, first unscrew the two sets of bolt components 13 on one side of the inspection cover 11. The bolt components 13 and the two sets of bolts on the pump body 1... The pit cavity 15 is disengaged from the threaded connection; then the inspection cover 11 is pulled outward so that the sealing ring 14 on one side of the inspection cover 11 is disengaged from the mounting cavity groove 12 of the pump body 1, and the pump body 1 can be opened for maintenance; when the inspection cover 11 needs to be reinstalled, first align the sealing ring 14 with the mounting cavity groove 12 and lock it in place, then thread the two sets of bolt components 13 to the inspection cover 11, and at the same time screw the bolt components 13 into the corresponding threaded hole cavity 15 and tighten them to achieve the sealing and fixing of the inspection cover 11.

[0043] When it is necessary to separate the pump body 1 from the base assembly 2, rotate the two sets of knobs 24 on the top surface of the base assembly 2. The knobs 24 drive the respective bevel gears 27 to rotate through the connecting rod. The bevel gears 27 mesh with the bevel gears 28, driving the bevel gears 28 and the threaded rod 29 fixedly connected to them to rotate synchronously. When the threaded rod 29 rotates, the locking block 231 slides axially and exits the locking groove 23 of the pump support 22. Both sets of locking blocks 231 retract into the base assembly 2, so that the pump body 1 can be lifted upward, and the pump support 22 at the bottom of the pump body 1 can be disengaged from the mounting cavity 25 of the base, completing the separation of the pump body from the base assembly 2. This facilitates the user's maintenance of the pump and improves the flexibility of the device.

[0044] When it is necessary to re-fix the pump body 1 to the base assembly 2, align the pump support 22 with the mounting cavity 25 of the base and insert it. The bottom surface of the pump support 22 should fit tightly against the rubber pad 26 on the top surface of the mounting cavity to ensure the installation reference and buffering effect. Then, rotate the two sets of knobs 24 in the opposite direction. The bevel gear assembly will drive the threaded rod 29 to rotate, causing the locking block 231 to slide axially and engage in the slot 23 of the pump support 22, thereby locking the pump body 1 to the base assembly 2. At the same time, the rubber plate 21 at the bottom of the base assembly 2 can improve the overall support stability of the device and reduce the transmission of vibration during operation.

[0045] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0046] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A centrifugal pump volute structure, comprising a pump body (1), wherein an impeller is rotatably connected inside the pump body (1), and a base assembly (2) is provided at the bottom of the pump body (1), wherein the pump body (1) is detachably mounted on the top of the base assembly (2), characterized in that: The pump body (1) has an installation cavity (12) on one side, and a sealing gasket is provided on the inner wall of the installation cavity (12). An inspection cover (11) is provided on one side of the installation cavity (12), and a sealing ring (14) is fixedly connected to one side of the inspection cover (11). The sealing ring (14) is engaged and connected to the inside of the installation cavity (12), and the outer periphery of the sealing ring (14) is tightly attached to the inner wall of the installation cavity (12). A rubber plate (21) is fixedly connected to the bottom of the base assembly (2), and an installation cavity (25) is provided on the top of the base assembly (2). A rubber pad (26) is provided on the top surface of the installation cavity (25). A locking mechanism is provided on one side of the base assembly (2), and two sets of locking mechanisms are provided.

2. The centrifugal pump volute structure according to claim 1, characterized in that: The pump body (1) has a threaded cavity (15) on one side, and two sets of the threaded cavity (15) are provided. The inspection cover (11) has a bolt component (13) threadedly connected on one side, and two sets of the bolt component (13) are provided.

3. The centrifugal pump volute structure according to claim 2, characterized in that: The bolt component (13) is matched with the corresponding threaded cavity (15) and the bolt component (13) is threadedly connected to the threaded cavity (15).

4. The centrifugal pump volute structure according to claim 3, characterized in that: The engaging mechanism includes a knob (24) rotatably connected to the top surface of the base assembly (2). A bevel gear (27) is rotatably connected inside the base assembly (2). The bevel gear (27) is fixedly connected to the knob (24) via a connecting rod. A bevel gear (28) is meshed on one side of the bevel gear (27). The bevel gear (28) is rotatably connected inside the base assembly (2).

5. The centrifugal pump volute structure according to claim 4, characterized in that: A threaded rod (29) is fixedly connected to one side of the bevel gear (28). The threaded rod (29) is rotatably connected to the inside of the base assembly (2). A locking block (231) is threadedly connected to the outer circumference of the threaded rod (29). The locking block (231) is slidably connected to the inside of the base assembly (2).

6. The centrifugal pump volute structure according to claim 5, characterized in that: A pump support (22) is provided on one side of the pump body (1). The pump support (22) is engaged and connected to the inside of the mounting cavity (25). Slots (23) are provided on both the left and right sides of the pump support (22). The locking block (231) matches the slot (23) at the corresponding position.

7. A centrifugal pump volute structure according to claim 6, characterized in that: The bottom surface of the pump support (22) is tightly attached to the top surface of the rubber pad (26).

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