A pump casing and a spray pump

Abstract

This utility model discloses a pump casing and a spray pump having such a casing. The pump casing includes a cylindrical body and multiple first guide plates. The interior of the cylindrical body accommodates an impeller. An opening is located on the radially outer surface of the cylindrical body, providing a channel for water to enter the interior of the cylindrical body. Multiple first guide plates are disposed within the opening and distributed circumferentially along the cylindrical body, separating the opening to form multiple water inlets. Each first guide plate has a protrusion that protrudes away from the opening. A first guide surface and a second guide surface are provided on the top of the protrusion, offset from each other and distributed axially along the cylindrical body. This utility model reduces the risk of the impeller becoming entangled in aquatic plants or long debris, prevents aquatic plants and long debris from clogging the water inlets, and ensures the normal operation of the spray pump.

Description

Technical Field

[0001] This utility model relates to the technical field of underwater propulsion, and in particular to a pump casing and a spray pump. Background Technology

[0002] Submersible jet pumps, as a highly efficient water propulsion device, are widely used in ship propulsion and other fields. In the structure of a jet pump, there is a pump casing, which typically has a water inlet and houses a drive shaft and impeller. During operation, the impeller rotates at high speed driven by the drive shaft, creating a negative pressure in the water inlet area. External water is drawn into the pump casing through the water inlet, and then, under the action of the impeller, it gains energy and is accelerated out, thereby generating thrust.

[0003] The inlet of the pump casing is usually a wide opening. While this open design is beneficial for high-flow-rate water intake, it also makes it easy for foreign objects such as aquatic plants, long, thin debris, and floating objects to be sucked into the inlet along with the water flow. However, once these long, thin, fibrous foreign objects (especially aquatic plants) are sucked into the pump casing, they can easily become entangled in the high-speed rotating impeller blades or drive shaft, affecting the normal operation of the pump. Utility Model Content

[0004] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a pump casing that can reduce the risk of the impeller being entangled in aquatic plants or long debris, prevent aquatic plants or long debris from clogging the water inlet, and ensure that the pump can operate normally.

[0005] This utility model also proposes a spray pump having one of the above-mentioned pump housings.

[0006] A pump casing according to a first aspect of the present invention includes: a cylindrical body, the interior of which is used to accommodate an impeller; an opening disposed on the radially outer surface of the cylindrical body and providing a channel for water flow to enter the interior of the cylindrical body; a plurality of first guide plates disposed within the opening and distributed circumferentially along the cylindrical body, the plurality of first guide plates separating the opening to form a plurality of water inlet holes; each first guide plate having a protrusion that protrudes radially from the interior of the cylindrical body, the top of the protrusion having a first guide surface and a second guide surface, the first guide surface and the second guide surface being offset from each other and distributed axially along the cylindrical body.

[0007] A pump casing according to an embodiment of the present utility model has at least the following beneficial effects:

[0008] 1. This utility model sets up multiple first guide plates, which are set inside the opening to form a grid structure. The grid structure can block large-sized debris from entering the cylinder. In addition, the multiple first guide plates divide the large opening into small-sized water inlet holes, physically blocking aquatic plants and long debris from entering the cylinder, greatly reducing the occurrence of aquatic plants and debris entanglement in the impeller.

[0009] 2. This utility model, by setting a protrusion, uses the protrusion to keep aquatic plants and long debris away from the opening of the cylinder, and away from the negative pressure area generated by the impeller. This reduces the possibility of aquatic plants and long debris being sucked into the cylinder due to the negative pressure generated by the impeller. Furthermore, the protrusion can protrude in a direction away from the opening of the cylinder, making it less likely for aquatic plants and long debris to get tangled in the first guide plate. In addition, the first guide surface and the second guide surface are offset and used to guide the movement of aquatic plants and long debris in sequence, further reducing the risk of entanglement and preventing aquatic plants and long debris from clogging the water inlet hole, ensuring that the spray pump can operate normally.

[0010] According to a first aspect of the present invention, a pump casing is provided, wherein the first guide surface is an inclined surface or an arc surface; and / or, the second guide surface is an inclined surface or an arc surface.

[0011] According to a first aspect of the present invention, in a pump casing, the first guide surface is located on the side of the second guide surface away from the impeller, and in the axial direction of the cylinder, the length of the first guide surface is less than the length of the second guide surface.

[0012] According to a first aspect of the present invention, a pump housing is provided, wherein the protrusion has an arc-shaped connecting surface, and the two ends of the arc-shaped connecting surface are respectively connected to the first guide surface and the second guide surface.

[0013] According to a first aspect of the present invention, a pump casing further includes two second guide plates, which are distributed along the circumference of the cylinder and respectively disposed on opposite sides of the opening.

[0014] According to a first aspect of the present invention, a pump casing is provided with a support seat coaxially on the cylinder, and the support seat has a mounting hole that matches the drive shaft of the impeller.

[0015] According to a first aspect of the present invention, a pump casing is provided between the cylinder and the support base, and a flow guiding channel is formed between two adjacent flow guiding plates.

[0016] A spray pump according to a second aspect of the present invention includes a pump housing as described in any one of the above claims.

[0017] According to a second aspect of the present invention, a spray pump includes a motor, a drive shaft, and an impeller. The motor is connected to the pump housing, the drive shaft is drivenly connected to the motor, and the impeller is coaxially connected to the drive shaft.

[0018] This utility model also provides a spray pump, which has the above-mentioned beneficial effects.

[0019] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of this utility model 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 of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the structure of a pump casing and a spray pump according to an embodiment of the present utility model;

[0022] Figure 2 for Figure 1 A schematic diagram of a pump casing is shown;

[0023] Figure 3 for Figure 2 A schematic diagram of the structure of a pump casing from another perspective is shown.

[0024] Reference numerals: 100-cylinder, 110-impeller, 120-first guide plate, 130-protrusion, 140-first guide surface, 150-second guide surface, 160-arc connecting surface, 170-second guide plate, 180-support base, 190-guide plate, 200-guide channel, 210-motor, 220-drive shaft, 230-water inlet. Detailed Implementation

[0025] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0026] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model 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 utility model.

[0027] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" and "second" are mentioned, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance or implicitly indicating the number of indicated technical features or the order of the indicated technical features.

[0028] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation, connection, and linkage" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between 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.

[0029] A pump housing and a spray pump according to an embodiment of the present invention are described below with reference to the accompanying drawings.

[0030] Reference Figure 1 The present invention aims to provide an embodiment of a pump housing and a spray pump.

[0031] A pump casing and spray pump according to an embodiment of the present invention includes a cylinder 100 and a plurality of first guide plates 120. The cylinder 100 is used to accommodate an impeller 110. An opening is provided on the radial outer surface of the cylinder 100 and provides a channel for water flow to enter the interior of the cylinder 100. The plurality of first guide plates 120 are disposed in the opening and distributed along the circumference of the cylinder 100. The plurality of first guide plates 120 separate the opening to form a plurality of water inlet holes 230. The first guide plate 120 has a protrusion 130, which protrudes along the radial direction of the cylinder 100 and away from the interior of the cylinder 100. The top of the protrusion 130 is provided with a first guide surface 140 and a second guide surface 150. The first guide surface 140 and the second guide surface 150 are offset and distributed along the axial direction of the cylinder 100.

[0032] It is understood that by setting multiple first guide plates 120, the present invention forms a grid structure within the opening. The grid structure can block large-sized debris from entering the cylinder 100. Furthermore, the multiple first guide plates 120 divide the large opening into small-sized water inlet holes 230, physically blocking aquatic plants and long debris from entering the cylinder 100, greatly reducing the occurrence of aquatic plants and debris entanglement in the impeller 110.

[0033] Furthermore, by providing a protrusion 130, this utility model uses the protrusion 130 to keep aquatic plants and long debris away from the opening of the cylinder 100, and away from the negative pressure area generated by the impeller 110. This reduces the possibility of aquatic plants and long debris being sucked into the cylinder 100 due to the negative pressure generated by the impeller 110. In addition, the protrusion 130 can protrude in a direction away from the opening of the cylinder 100, making it less likely for aquatic plants and long debris to get tangled on the first guide plate 120. Furthermore, the first guide surface 140 and the second guide surface 150 are offset and used to guide the movement of aquatic plants and long debris in sequence, further reducing the risk of tangling and preventing aquatic plants and long debris from clogging the water inlet 230, thus ensuring that the spray pump can operate normally.

[0034] In some embodiments of this utility model, the first guide surface 140 is an inclined surface or an arc surface; and / or, the second guide surface 150 is an inclined surface or an arc surface.

[0035] Preferably, the first guide surface 140 can be an inclined surface or a circular arc surface, and the second guide surface 150 can be an inclined surface or a circular arc surface. Both inclined surfaces and circular arc surfaces can reduce water flow resistance and improve water intake efficiency.

[0036] In addition, the slope and arc surface can reduce the resistance between aquatic plants, long debris and the first guide plate 120, and reduce the risk of the first guide plate 190 being entangled by aquatic plants and long debris.

[0037] In some embodiments of this utility model, the first guide surface 140 is located on the side of the second guide surface 150 away from the impeller 110, and the length of the first guide surface 140 is less than the length of the second guide surface 150 in the axial direction of the cylinder 100.

[0038] Therefore, when the pump moves forward, the aquatic plants and long debris first pass through the first guide surface 140. The first guide surface 140 lifts the aquatic plants and long debris, keeping them away from the water inlet 230 and reducing the risk of the aquatic plants and long debris being sucked into the water inlet 230.

[0039] In some embodiments of this invention, the protrusion 130 has an arc-shaped connecting surface 160, with the two ends of the arc-shaped connecting surface 160 connected to a first guiding surface 140 and a second guiding surface 150, respectively. It is understood that the smooth arc-shaped connecting surface 160 prevents debris from accumulating and reduces the risk of blockage.

[0040] In some embodiments of this utility model, reference is made to Figure 2 and Figure 3 It also includes two second guide plates 170, which are distributed along the circumference of the cylinder 100 and respectively located on opposite sides of the opening. Understandably, the second guide plates 170 block debris from entering laterally, further reducing the risk of aquatic plants being sucked into the water inlet 230.

[0041] In some embodiments of this utility model, reference is made to Figure 3 The cylinder 100 is coaxially provided with a support base 180, which has a mounting hole that matches the drive shaft 220 of the impeller 110. It can be understood that using the support base 180 to mount the drive shaft 220 reduces the vibration and uneven wear of the drive shaft 220 and improves the rotational stability of the impeller 110.

[0042] In some embodiments of this utility model, a plurality of guide plates 190 are provided between the cylinder 100 and the support base 180, and a guide channel 200 is formed between two adjacent guide plates 190. It is understood that the specific design of the guide channel 200 increases the water flow acceleration efficiency and significantly improves the output thrust of the spray pump.

[0043] In addition, this embodiment also proposes a spray pump, which includes a pump housing.

[0044] By designing the pump casing, the impeller 110 of the spray pump is effectively prevented from being entangled in aquatic plants, reducing the likelihood of blockage in the inlet hole 230 and ensuring continuous operation of the spray pump in complex water areas.

[0045] In some embodiments of this utility model, the spray pump includes a motor 210, a drive shaft 220, and an impeller 110. The motor 210 is connected to the pump casing, the drive shaft 220 is connected to the motor 210 in a transmission manner, and the impeller 110 is coaxially connected to the drive shaft 220. Therefore, by using the motor 210 to drive the drive shaft 220 to rotate, and the drive shaft 220 to drive the impeller 110 to rotate, the underwater driving function is realized.

[0046] In the description of this specification, the references to terms such as "an embodiment, some embodiments, illustrative embodiments, example, specific example, or examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0047] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A pump casing, characterized in that, include: A cylindrical body (100) is provided for housing an impeller (110). An opening is provided on the radial outer surface of the cylinder (100) and provides a channel for water flow to enter the interior of the cylinder (100); Multiple first guide plates (120) are disposed in the opening and distributed circumferentially along the cylinder (100). The multiple first guide plates (120) separate the opening to form multiple water inlet holes (230). The first guide plate (120) has a protrusion (130) that protrudes radially from the interior of the cylinder (100). The top of the protrusion (130) is provided with a first guide surface (140) and a second guide surface (150). The first guide surface (140) and the second guide surface (150) are offset from each other and are distributed along the axial direction of the cylinder (100).

2. The pump casing according to claim 1, characterized in that, The first guide surface (140) is a slope or an arc surface; and / or, the second guide surface (150) is a slope or an arc surface.

3. A pump casing according to claim 1, characterized in that, The first guide surface (140) is located on the side of the second guide surface (150) away from the impeller (110). In the axial direction of the cylinder (100), the length of the first guide surface (140) is less than the length of the second guide surface (150).

4. A pump casing according to claim 1, characterized in that, The protrusion (130) has an arc-shaped connecting surface (160), and the two ends of the arc-shaped connecting surface (160) are respectively connected to the first guide surface (140) and the second guide surface (150).

5. A pump casing according to claim 1, characterized in that, It also includes two second guide plates (170), which are distributed around the circumference of the cylinder (100) and are respectively disposed on opposite sides of the opening.

6. A pump casing according to claim 1, characterized in that, The cylinder (100) is coaxially provided with a support base (180), which has a mounting hole that matches the drive shaft (220) of the impeller (110).

7. A pump casing according to claim 6, characterized in that, A plurality of guide plates (190) are provided between the cylinder (100) and the support base (180), and a guide channel (200) is formed between two adjacent guide plates (190).

8. A spray pump, characterized in that, Includes a pump casing as described in any one of claims 1 to 7.

9. A spray pump according to claim 8, characterized in that, The spray pump includes a motor (210), a drive shaft (220), and an impeller (110). The motor (210) is connected to the pump casing, the drive shaft (220) is connected to the motor (210) in a transmission manner, and the impeller (110) is coaxially connected to the drive shaft (220).

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