Rotor pump

Abstract

The utility model discloses a rotor pump which comprises a pump body, a pump cover, a pump shaft and a rotor, the pump shaft and the rotor are arranged in the pump body, the rotor is installed on the pump shaft and can rotate along with the pump shaft, the pump cover is fixedly arranged at one end of the pump body in a covering mode, the pump shaft is provided with a section of extension portion, and the extension portion extends out of the pump body. And a mounting mechanism is arranged between the extension part of the pump shaft and the pump cover and is used for supporting and sealing the extension part. The bearing capacity of the rotor pump can be improved, the service life of the pump shaft of the rotor pump can be prolonged, and various working condition requirements of high-pressure conveying can be met; the mechanical sealing condition can be observed at any time by opening the liquid discharging disc, whether leakage occurs or not is checked, and maintenance is conducted in time.

Description

Technical Field

[0001] The utility model relates to the technical field of fluid transportation, in particular to a rotor pump. Background Art

[0002] Rotary pumps are a common fluid conveying device used in a variety of industries, including the petroleum, chemical, pharmaceutical, and food industries. Traditional rotary pump designs typically place the pump shaft completely within the pump casing, sealed by end caps at each end. While this design can meet fluid conveying needs under general operating conditions to a certain extent, its pressure-bearing capacity and pump shaft life are often limited when operating under complex conditions such as high pressure, high temperature, or corrosive media. Summary of the Invention

[0003] According to an embodiment of the present invention, a rotor pump is provided, comprising a pump body, a pump cover, a pump shaft and a rotor. The pump shaft and the rotor are arranged in the pump body, the rotor is mounted on the pump shaft and can rotate with the pump shaft, and the pump cover is fixed to one end of the pump body.

[0004] The pump shaft is provided with an extension portion, which extends out of the pump body;

[0005] A mounting mechanism is provided between the extension portion of the pump shaft and the pump cover, and the mounting mechanism is used for supporting and sealing the extension portion.

[0006] Furthermore, the mounting mechanism comprises: a bearing and a mechanical seal;

[0007] Mechanical seals and bearings are installed between the pump cover and the pump shaft;

[0008] The bearing is installed at the end of the mechanical seal away from the pump body;

[0009] Mechanical seal is used to seal between pump shaft and pump cover;

[0010] The bearings support the pump shaft.

[0011] Furthermore, the mechanical seal adopts a single-end mechanical seal.

[0012] Furthermore, the mechanical seal adopts a double-end mechanical seal.

[0013] Furthermore, the mounting mechanism further comprises: a drain pan, which is mounted on an end of the bearing away from the mechanical seal, and the drain pan is openably mounted on the pump cover.

[0014] Furthermore, the pump shaft includes a pair of parallel driving shaft and driven shaft; the number of rotors is a pair, and they are respectively installed on the driving shaft and the driven shaft.

[0015] The rotor pump according to the embodiment of the present invention can increase the pressure-bearing capacity of the rotor pump and extend the service life of the rotor pump shaft to meet the working requirements of various high-pressure transmission conditions; by opening the drain pan, the condition of the mechanical seal can be observed at any time to check whether there is leakage and perform timely maintenance.

[0016] It is to be understood that both the foregoing general description and the following detailed description are exemplary, and are intended to provide further explanation of the technology as claimed. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a structural diagram of a rotor pump according to an embodiment of the present utility model;

[0018] Figure 2 It is a front cross-sectional view of a rotor pump according to an embodiment of the present utility model;

[0019] Figure 3 It is a side sectional view of a rotor pump according to an embodiment of the present utility model. DETAILED DESCRIPTION

[0020] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings to further illustrate the present invention.

[0021] First, combine Figures 1-3 The rotor pump according to the embodiment of the present invention is described, which is used for conveying fluid medium and has a wide range of application scenarios.

[0022] like Figures 1-3 As shown, the rotor pump of an embodiment of the present invention includes a pump body 1, a pump cover 2, a pump shaft and a rotor 4. The pump shaft and rotor 4 are arranged in the pump body 1, and the rotor 4 is mounted on the pump shaft and can rotate with the pump shaft. The pump cover 2 is fixed to one end of the pump body 1, and the pump shaft is provided with an extension portion, which extends out of the pump body 1; a mounting mechanism is provided between the extension portion of the pump shaft and the pump cover 2, and the mounting mechanism is used for supporting and sealing the extension portion. Through the extension of the pump shaft and the external addition of the mounting mechanism, the stability of the pump shaft during high-speed rotation can be significantly enhanced, the pressure-bearing capacity of the pump shaft can be increased, and the service life of the pump shaft can be extended to meet various high-pressure delivery working conditions, and effective sealing can be achieved in the pump to prevent external impurities from entering the pump.

[0023] Further, if Figures 1-3 As shown, in this embodiment, the mounting mechanism includes: a bearing 52 and a mechanical seal 51; the mechanical seal 51 and the bearing 52 are installed between the pump cover 2 and the pump shaft; the bearing 52 is installed at the end of the mechanical seal 51 away from the pump body 1; the mechanical seal 51 is used to seal between the pump shaft and the pump cover 2, effectively preventing the fluid in the pump from leaking into the external environment, and maintaining the purity and pressure stability of the fluid in the pump; the bearing 52 supports the pump shaft to ensure that the pump shaft maintains a stable trajectory during rotation.

[0024] Furthermore, in this embodiment, the mechanical seal 51 can be a single-end mechanical seal 51, which cools the medium by air and the medium itself without an external cooling system. Alternatively, a double-end mechanical seal 51 can be used, which cools the medium by an external cooling system.

[0025] Further, if Figures 1-3 As shown, in this embodiment, the mounting mechanism further includes: a drain pan 53, which is mounted on the end of the bearing 52 away from the mechanical seal 51, and the drain pan 53 is openably mounted on the pump cover 2. The drain pan 53 can be mounted by bolts. During use, the condition of the mechanical seal 51 can be observed at any time by opening the drain pan 53 to check whether leakage occurs and perform timely maintenance.

[0026] Further, if Figures 1-3 As shown, in this embodiment, the pump shaft includes a pair of parallel driving shafts 31 and driven shafts 32; the number of rotors 4 is a pair, and they are respectively installed on the driving shaft 31 and the driven shaft 32; the end of the driving shaft 31 away from the extension is connected to a power device such as a motor, which drives the driving shaft 31 to rotate, and the driving shaft 31 and the driven shaft 32 are driven to rotate by the engagement of the gear mechanism between the driving shaft 31 and the driven shaft 32.

[0027] Above, refer to Figures 1-3 The present invention describes a rotor pump according to an embodiment of the present invention, which can increase the pressure-bearing capacity of the rotor pump and extend the service life of the rotor pump shaft to meet the working requirements of various high-pressure transmission conditions; by opening the drain pan, the condition of the mechanical seal can be observed at any time to check whether there is leakage and perform timely maintenance.

[0028] It should be noted that, in this specification, the terms "comprises," "includes," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a process, method, article, or apparatus comprising a series of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus. In the absence of further limitations, the elements defined by the phrase "comprising..." do not exclude the presence of other identical elements in the process, method, article, or apparatus comprising the elements.

[0029] Although the present invention has been described in detail through the above preferred embodiments, it should be understood that the above description should not be considered as limiting the present invention. After reading the above description, various modifications and alternatives to the present invention will be readily apparent to those skilled in the art. Therefore, the scope of protection of the present invention shall be defined by the appended claims.

Claims

1. A rotor pump comprising a pump body, a pump cover, a pump shaft and a rotor, wherein the pump shaft and the rotor are arranged in the pump body, the rotor is mounted on the pump shaft and can rotate with the pump shaft, and the pump cover is fixed on one end of the pump body, characterized in that: The pump shaft is provided with an extension portion, and the extension portion extends out of the pump body; A mounting mechanism is provided between the outer extension of the pump shaft and the pump cover, and the mounting mechanism is used for supporting and sealing the outer extension; The mounting mechanism comprises: a bearing and a mechanical seal; The mechanical seal and the bearing are installed between the pump cover and the pump shaft; The bearing is mounted on an end of the mechanical seal away from the pump body; The mechanical seal is used for sealing between the pump shaft and the pump cover; The bearing supports the pump shaft; The mounting mechanism further comprises a drain pan, the drain pan being mounted on an end of the bearing away from the mechanical seal, and the drain pan being openably mounted on the pump cover.

2. The rotor pump according to claim 1, characterized in that The mechanical seal adopts a single-end mechanical seal.

3. The rotor pump according to claim 1, characterized in that: The mechanical seal adopts a double-end mechanical seal.

4. The rotor pump according to claim 1, characterized in that: The pump shaft comprises a pair of parallel driving shafts and driven shafts; the number of the rotors is a pair, and the rotors are respectively mounted on the driving shaft and the driven shaft.

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