Centrifugal pump seat sample, mold, centrifugal pump seat and centrifugal pump

Abstract

The utility model discloses a centrifugal pump base sample, a mold, a centrifugal pump base and a centrifugal pump. The sample is provided with a detachable movable partition plate at the tail part of the partition plate at the outlet diffusion section of the sample, so that the tail part has different lengths to form different water outlet throat areas. The mold comprises a partition plate movable block used for generating two different casting blanks, and the two casting blanks generated through the partition plate movable block have different lengths at the tail of a partition plate of an outlet diffusion section so as to form different water outlet throat areas. The pump seat of the centrifugal pump is manufactured by the pump seat mold of the centrifugal pump. The centrifugal pump comprises a pump shell, the pump shell comprises a pump base and a pump cover installed on the pump base, and the pump base is the centrifugal pump base. According to the centrifugal pump base sample, the mold, the centrifugal pump base and the centrifugal pump, two different parameter requirements can be met through one sample main body structure or one set of product mold, so that products are easy to manufacture, and the manufacturing period is short.

Description

Technical Field

[0001] This application relates to the field of fluid equipment technology, and in particular to a centrifugal pump base sample, mold, centrifugal pump base and centrifugal pump. Background Technology

[0002] Currently, centrifugal pumps are widely used in industrial fire protection, building fire protection, and other markets. Fire pumps generally have a high head, and most fire pump casings use a double volute design to balance radial forces, reduce pump vibration, and improve operational stability.

[0003] The performance requirements for fire pumps stipulate that the head at 1.5 times the rated flow rate should not be less than 65% of the head at the rated flow rate. However, existing products often have a head at 1.5 times the rated flow rate that is lower than the standard requirement, failing to meet the requirements of this relatively large flow rate parameter. Therefore, it is necessary to redesign the pump casing and remake the mold, resulting in a long product manufacturing cycle and high costs. Utility Model Content

[0004] To solve the above-mentioned technical problems, the purpose of this utility model is to provide a centrifugal pump base sample, mold, centrifugal pump base and centrifugal pump that are easy to manufacture and have a short manufacturing cycle.

[0005] The technical solution provided by this utility model is as follows:

[0006] A centrifugal pump base sample, wherein the sample has a detachable movable baffle at the tail of the baffle in the outlet diffuser section, so that the tail has different lengths to form different outlet throat areas.

[0007] Preferably, the movable baffle forms different outlet throat areas before and after installation.

[0008] Preferably, the inner wall of the sample tube has a fixing groove on both sides of its outlet diffusion section for installing a movable baffle, and the movable baffle is installed in the fixing groove.

[0009] Preferably, the fixing groove is provided with two positioning holes that penetrate the pipe wall, and the movable partition is fixed by positioning plugs in conjunction with the positioning holes.

[0010] Preferably, the centrifugal pump is a fire pump.

[0011] A centrifugal pump base mold includes a baffle block for generating two different casting blanks, wherein the two casting blanks generated by the baffle block have different lengths at the tail of the baffle in the outlet diffuser section to form different outlet throat areas.

[0012] Preferably, the centrifugal pump is a fire pump.

[0013] A centrifugal pump base is made from a centrifugal pump base mold as described above.

[0014] A centrifugal pump includes a pump housing, the pump housing including a pump base and a pump cover mounted on the pump base, the pump base being a centrifugal pump base as described above.

[0015] Preferably, the pump base is a double volute pump base.

[0016] Compared to existing technologies, the centrifugal pump base sample, mold, centrifugal pump base, and centrifugal pump of this invention feature a detachable movable baffle at the tail of the baffle in the outlet diffusion section of the sample, allowing the tail to have different lengths. Alternatively, the mold may include a movable baffle block for generating two different casting blanks. The two casting blanks generated by the movable baffle block have different lengths at the tail of the baffle in the outlet diffusion section, thus forming different outlet throat areas. This allows a single sample main structure or a set of product molds to meet two different parameter requirements, making product manufacturing easier and shortening the manufacturing cycle. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a front view of the centrifugal pump base sample of this utility model without the movable partition installed;

[0019] Figure 2 for Figure 1 The image shows a front view of a centrifugal pump base sample after the movable partition has been installed.

[0020] Figure 3 for Figure 2 The image shows an internal cross-sectional view of a centrifugal pump base sample. Detailed Implementation

[0021] To enable those skilled in the art to better understand the technical solutions in this application, the technical solutions in the embodiments of this application will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0022] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly set on the other component; when a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to the other component.

[0023] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0024] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "a plurality of" or "several" means two or more, unless otherwise explicitly specified.

[0025] It should be noted that the structures, proportions, sizes, etc., shown in the accompanying drawings of this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the conditions under which this application can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size should still fall within the scope of the technical content disclosed in this application, provided that they do not affect the effects and purposes that this application can produce.

[0026] like Figures 1 to 3 As shown in the figure, this utility model embodiment provides a centrifugal pump base sample, which is used for product design, testing, verification, etc. In this embodiment, the pump base is a double volute pump base, and the centrifugal pump is a fire pump. Of course, in other embodiments, it can also be a centrifugal pump used in other occasions.

[0027] The sample has a detachable movable baffle 2 at the tail of the fixed baffle 1 in its outlet diffuser section, allowing the tail to have different lengths and thus different outlet throat areas. The fixed baffle 1 separates and forms two flow channels, while the fixed baffle 1 and the movable baffle 2 together form two different flow channels. Thus, the movable baffle 2 forms different outlet throat areas before and after installation (in other embodiments, multiple movable baffles can be manufactured to form multiple different outlet throat areas). This allows for increasing the certified flow rate parameters of the fire pump by changing the outlet throat area of ​​the pump casing, and the product structure can be determined after testing and verification. Therefore, a single sample main structure (by installing a movable baffle) can be used to manufacture samples with different outlet throat areas, satisfying two (or more) different parameter requirements, thereby simplifying product design and manufacturing and shortening the manufacturing cycle.

[0028] In this embodiment, the movable partition 2 is fixed as follows: The inner wall of the sample tube has fixing grooves 3 on both sides at its outlet diffusion section for installing the movable partition 2. The fixing grooves 3 have two positioning holes (not shown) penetrating the tube wall. After the movable partition 2 is installed in the fixing grooves 3, it is fixed by a fastener (in this embodiment, a positioning plug 4) engaging with the positioning holes. The positioning plug 4 also prevents leakage at the positioning holes. Of course, in other embodiments, the movable partition can be fixed using other different methods.

[0029] After the product design is completed, a centrifugal pump base mold can be designed and manufactured to generate casting blanks. The mold includes a baffle block (the shape of which corresponds to the movable baffle) for generating two different casting blanks. The two casting blanks generated by the baffle block have different lengths at the tail of the baffle in the outlet diffuser section to form different outlet throat areas.

[0030] This embodiment also provides a centrifugal pump base, which is made from the centrifugal pump base mold described above. In this way, products with different outlet throat areas can be produced using a single product mold (by whether or not a partition block is installed), satisfying two different parameter requirements, thus making product manufacturing easy and shortening the manufacturing cycle.

[0031] This embodiment also provides a centrifugal pump, including a pump housing, the pump housing including a pump base and a pump cover mounted on the pump base, the pump base being a centrifugal pump base as described above.

[0032] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A centrifugal pump bowl sample, characterized by, The detachable movable partition is arranged at the tail of the partition of the outlet diffusion section of the sample, so that the tail has different lengths to form different water outlet throat areas.

2. The centrifugal pump bowl of claim 1, wherein, The movable partition forms different water outlet throat areas before and after installation.

3. The centrifugal pump bowl of claim 1 wherein, Two positioning holes penetrating the wall are arranged on the fixed slot, and the movable partition is fixed by positioning the holes with a positioning plug.

4. The centrifugal pump bowl of claim 3, wherein the impeller is a single stage impeller. The centrifugal pump is a fire pump.

5. The centrifugal pump impeller of claim 1, wherein, The mold comprises a movable partition for generating two different casting blanks, and the two casting blanks generated by the movable partition have different lengths at the tail of the partition of the outlet diffusion section to form different water outlet throat areas.

6. A centrifugal pump base mold characterized by, The centrifugal pump is a fire pump.

7. The centrifugal pump base mold of claim 6, wherein, The pump seat is made of the centrifugal pump seat mold according to claim 8.

8. A centrifugal pump bowl characterized by, The pump seat is a centrifugal pump seat according to claim 8.

9. A centrifugal pump comprising a pump housing including a pump base and a pump cover mounted to the pump base, characterized by The pump seat is a double volute pump seat.

10. The centrifugal pump of claim 9, wherein, ​

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