Novel flexible impeller pump

Abstract

The utility model relates to the technical field of impeller pumps, and discloses a novel flexible impeller pump which comprises a pump shell, a crescent suite, a rotating shaft and an impeller, the pump shell comprises a shell body and a sealing cover, a water inlet flange and a water outlet flange are arranged on the shell body, the impeller comprises blades and an impeller shaft, and the blades comprise end blades, root blades and a connecting shaft. The end blades and the root blades are rotationally connected to the connecting shaft to form seamless bendable blades. The impeller shaft sleeves the rotating shaft and is used for connecting the plurality of blades; the crescent suite comprises a crescent sleeve and guide rail discs, the guide rail discs are installed on the two sides of the crescent sleeve, guide rail grooves are formed in the guide rail discs, the blades slide in the guide rail grooves, and a water inlet and a water outlet are formed in the crescent sleeve. According to the utility model, the blades are matched with the guide rail disc, so that the bending frequency and amplitude of the blades during the operation of the pump body are reduced; the overall service life of the impeller is prolonged; and meanwhile, the problem of inconvenient installation in the pump assembly stage caused by rubber hardening in cold weather is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to impeller pump technical field, concretely is a new flexible impeller pump. BACKGROUND

[0002] Flexible impeller pump as a displacement pump has wide application scene. When the medium composition of delivery is complex, the viscosity is higher, the requirement of pump is higher. Flexible impeller pump can handle this kind of complex situation because the impeller is rubber material. It can accept the collision of solid in medium, is not sensitive to solid in fluid, and even can pump even in the face of high viscosity of fluid.

[0003] But the rubber impeller continuously high strength bending, springback in the process of operation, causes the rubber impeller to be easy to fatigue fracture. Meanwhile, in cold weather, rubber can harden because of the reduction of temperature, thereby bringing inconvenience to the installation of impeller, even affecting the performance of pump. UTILITY MODEL CONTENTS

[0004] The utility model discloses a new flexible impeller pump, solve the blade of rubber impeller pump in prior art and easily break, the problem such as inconvenient installation at low temperature.

[0005] The utility model discloses a new flexible impeller pump, including pump shell, crescent suite, pivot, impeller, the pump shell includes casing, sealing cover, be provided with water inlet flange, drain flange on the casing, the impeller includes:

[0006] Blade, the blade includes end blade, root blade, connecting shaft, the end blade, root blade are rotatably connected on the connecting shaft, and form the blade that can be bent without gap;

[0007] Impeller shaft, is set on the pivot, is used for connecting a plurality of blades;

[0008] The crescent suite includes crescent sleeve, guide rail disc, the guide rail disc is installed on both sides of the crescent sleeve, is provided with guide rail groove on the guide rail disc, and the blade slides in the guide rail groove, and is provided with water inlet, drain on the crescent sleeve.

[0009] In order to better realize the utility model, further, the end blade is provided with guide rail shaft, and the guide rail shaft slides in the guide rail groove.

[0010] In order to better realize the utility model, further, the root blade is detachably installed on the impeller shaft, and the end of the root blade away from the end blade is cylindrical, and is embedded in the root blade.

[0011] In order to better realize the utility model, further, the end of the root blade in cylindrical shape is provided with an embedded shaft.

[0012] In order to better realize the utility model, further, the connecting shaft, the guide rail shaft and the embedded shaft are one of stainless steel material, titanium alloy, nickel alloy and aluminum alloy.

[0013] In order to better realize the utility model, further, the shell and the sealing cover are connected through bolts, and double-layer sealing rings with different diameters are arranged between the shell and the sealing cover.

[0014] Compared with the prior art, the utility model has the following advantages and beneficial effects:

[0015] (1) The utility model discloses a blade cooperating with a guide rail disc, reduces the bending frequency and amplitude of the blade during the operation of the pump body, increases the overall service life of the impeller, and improves the installation inconvenience of the pump during the assembly stage caused by the hardening of rubber due to cold weather.

[0016] (2) The utility model discloses a modularized detachable blade, so that each blade is independently arranged, and if one of the blades is damaged, the damaged blade can be directly replaced without replacing the entire impeller. DRAWINGS

[0017] Figure 1 It is a whole structure schematic view of the utility model.

[0018] Figure 2 It is a whole structure sectional view of the utility model.

[0019] Figure 3 It is an explosion view of the crescent sleeve and the impeller structure.

[0020] Figure 4 It is an impeller structure schematic view.

[0021] Wherein: 101 - shell, 102 - water inlet flange, 103 - drainage flange, 104 - sealing cover, 105 - guide rail disc, 106 - rotating shaft, 107 - crescent sleeve, 108 - guide rail groove, 109 - water inlet, 110 - drainage, 201 - impeller shaft, 202 - end blade, 203 - connecting shaft, 204 - root blade, 205 - guide rail shaft, 206 - embedded shaft. DETAILED DESCRIPTION

[0022] 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.

[0023] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0024] Example 1:

[0025] This embodiment provides a novel flexible impeller pump, specifically as follows: Figures 1-4 As shown, the pump includes a pump casing, a crescent-shaped assembly, a rotating shaft 106, and an impeller. The crescent-shaped assembly is fixedly installed in the pump casing. The pump casing includes a housing 101 and a sealing cover 104, which are fixedly connected. The housing 101 is provided with an inlet flange 102 and a drain flange 103, which are perpendicularly arranged. The impeller includes blades made of natural rubber. Each blade includes an end blade 202, a root blade 204, and a connecting shaft 203. The end blade 202 and the root blade 204 are rotatably connected to the connecting shaft 203. 03 forms seamless, bendable blades; it also includes an impeller shaft 201, which is fixedly sleeved on the rotating shaft 106 for connecting multiple blades; the crescent-shaped assembly includes a crescent sleeve 107 and a guide rail disk 105, the guide rail disk 105 is installed on both sides of the crescent sleeve 107, the guide rail disk 105 is provided with a guide rail groove 108, the blades slide in the guide rail groove 108, the crescent sleeve 107 is provided with a water inlet 109 and a water outlet 110, the water inlet 109 is connected to the water inlet flange 102, and the water outlet 110 is connected to the water outlet flange 103.

[0026] When the external driving source is used to drive the rotating shaft 106, the rotating shaft 106 drives the impeller to rotate, at this time, the impeller shaft 201 drives the root blade 204, the root blade 204 drives the end blade 202, and the end blade 202 slides in the guide groove 108. Since the guide groove 108 is not eccentrically arranged with the impeller, the spaces formed between the adjacent two blades and the crescent sleeve are variable, and these spaces gradually increase near the water inlet flange 102 and gradually decrease near the water outlet flange 103; thereby achieving the suction of liquid from the water inlet flange 102 and then pumping out from the water outlet flange 103.

[0027] When assembling the pump body, first, a guide disc 105 and a crescent sleeve 107 are fixed on the shell 101, then the impeller shaft 201 and the root blade 204 are arranged on the rotating shaft 106, then the connecting shaft 203 is inserted on the root blade 204, then a plurality of end blades 202 are inserted on the connecting shaft 203, then the position of the end blade 202 is adjusted so that the end blade 202 is inserted on the guide groove 108, then another guide disc 105 is arranged on the crescent sleeve 107, and finally the sealing cover 104 is closed to complete the assembly.

[0028] Through the above arrangement, the bending frequency and amplitude of the blade during the operation of the pump body are reduced; the overall life of the impeller is increased; and the installation inconvenience problem of the pump assembly stage caused by the hardening of rubber in cold weather is improved.

[0029] Embodiment 2:

[0030] This embodiment is further expanded on the basis of the above embodiment, and specifically as shown in Figure 4 The end blade 202 is provided with a guide shaft 205 penetrating through the end blade 202, and the guide shaft 205 slides in the guide groove 108. By arranging the guide shaft 205, the end blade 202 slides more stably on the guide groove 108, preventing derailment; and the guide shaft 205 can enhance the strength of the end of the blade close to the crescent sleeve 107, preventing local bending of the blade.

[0031] Further, the root blade 204 is detachably mounted on the impeller shaft 201, and the end of the root blade 204 away from the end blade 202 is cylindrical and embedded in the root blade 204. This arrangement allows each blade to be independently arranged, and if one is damaged, it can be directly replaced without replacing the entire impeller.

[0032] Further, the cylindrical end of the root blade 204 is provided with an embedded shaft 206 penetrating through the cylindrical end. The embedded shaft 206 can prevent the root blade 204 from being separated from the impeller shaft 201 along the radial direction when the tension is too large; and plays a role in preventing separation.

[0033] Further, the connecting shaft 203, the guide rail shaft 205 and the fitting shaft 206 are made of one of stainless steel, titanium alloy, nickel alloy and aluminum alloy, and preferably stainless steel in the embodiment, which can provide sufficient strength to prevent bending, and can prevent rust and corrosion, and is suitable for wide application.

[0034] Preferably, the shell 101 is connected with the sealing cover 104 through bolts, and double-layer sealing rings with different diameters are arranged between the shell 101 and the sealing cover 104. The double-layer sealing rings are arranged to make the sealing performance of the whole pump body better, and liquid leakage is less likely to occur.

[0035] Other parts of the embodiment are the same as those of the above-described embodiments, and will not be described herein.

[0036] The above is only a preferred embodiment of the utility model, and does not limit the utility model in any form, and any simple modification or equivalent change made according to the technical essence of the utility model to the above embodiment falls within the protection scope of the utility model.

Claims

1. A new type of flexible impeller pump, comprising a pump shell, a crescent sleeve set, a rotating shaft (106), an impeller, the pump shell comprising a shell (101), a sealing cover (104), the shell (101) being provided with a water inlet flange (102) and a water outlet flange (103), characterized in that, The impeller comprises: Blades, the blades comprise end blades (202), root blades (204), connecting shafts (203), the end blades (202), root blades (204) are respectively rotatably connected on the connecting shafts (203), and form seamless and foldable blades; Impeller shaft (201), the sleeve is set on the rotating shaft (106), for connecting a plurality of blades; The crescent sleeve set comprises a crescent sleeve (107) and guide rail plates (105), the guide rail plates (105) are installed on both sides of the crescent sleeve (107), guide rail grooves (108) are formed in the guide rail plates (105), the blades slide in the guide rail grooves (108), and water inlets (109) and water outlets (110) are formed in the crescent sleeve (107).

2. A novel flexible impeller pump as claimed in claim 1, wherein: The end blades (202) are provided with guide rail shafts (205) penetrating through, and the guide rail shafts (205) slide in the guide rail grooves (108).

3. A new flexible impeller pump as claimed in claim 1, wherein: The root blades (204) are detachably installed on the impeller shaft (201), one end of the root blades (204) away from the end blades (202) is in a cylindrical shape, and the root blades (204) are embedded in the root blades (204).

4. A novel flexible impeller pump as claimed in claim 3, wherein: The end of the root blades (204) in a cylindrical shape is provided with an embedded shaft (206) penetrating through.

5. A new flexible impeller pump as claimed in any one of claims 1 to 4, characterized in that: The connecting shafts (203), the guide rail shafts (205) and the embedded shafts (206) are made of one of stainless steel, titanium alloy, nickel alloy and aluminum alloy.

6. A new flexible impeller pump as claimed in claim 1, wherein: The shell (101) and the sealing cover (104) are connected by bolts, and double-layer sealing rings with different diameters are arranged between the shell (101) and the sealing cover (104).

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