Water pump capable of preventing water leakage caused by toppling

Abstract

The utility model discloses a water pump capable of preventing water leakage during pouring, which relates to the technical field of water pumps and comprises a water pump body, and a small hole is arranged at the upper end of the water pump body. A hollow cylinder is installed at the upper end of the water pump body, and the small holes are located in the hollow cylinder. A blocking plate is arranged in the hollow cylinder, and the edge of the blocking plate is in sliding fit with the inner wall of the hollow cylinder; a connecting piece is mounted at the upper end of the hollow cylinder in a non-closed manner; an elastic piece is connected between the connecting piece and the blocking plate; in a normal state, the blocking plate is arranged in the inner cavity of the hollow cylinder and is attached to the inner wall of the hollow cylinder, so that when the projector topples and inclines, water leaked from the small hole cannot be leaked out of the water pump main body under the blocking of the blocking plate, and other parts in a projector shell are prevented from being influenced; the water pump main body can cause the change of the internal air pressure due to the working of the water pump main body, and when the air pressure change amplitude is small, the blocking plate can slide on the inner wall below the step in the hollow cylinder under the elastic action of the spring to adjust the air pressure balance in the water pump main body.

Description

Technical Field

[0001] The utility model relates to the technical field of water pumps, in particular to a water pump that can prevent tipping and water leakage. Background Art

[0002] When the projector is turned on, the DMD inside the light engine will generate a lot of heat. The original machine uses a small water pump built into the projector casing to circulate coolant to take away the heat from the DMD. The hot water then passes through the built-in radiator, and the fan blows away the heat on the radiator to achieve thermal balance.

[0003] However, there is a small hole with a diameter of 2 mm on the upper end of the water pump. When the projector is tilted or inverted, coolant will leak from the small hole. The leaked liquid will come into contact with the internal circuit and optical path of the machine, causing serious consequences such as short circuit and pollution of the optical path. Utility Model Content

[0004] The purpose of the utility model is to provide a water pump that prevents tipping and leakage, and solve the following technical problems:

[0005] How to prevent water from leaking from the small hole on the water pump inside the projector when it is tipped over.

[0006] The purpose of the utility model can be achieved through the following technical solutions:

[0007] A water pump for preventing tipping and water leakage comprises a water pump body, wherein a small hole is provided at the upper end of the water pump body; a hollow cylinder is installed at the upper end of the water pump body, wherein the small hole is located in the hollow cylinder; a blocking plate is provided in the hollow cylinder, wherein the edge of the blocking plate is slidably fitted with the inner wall of the hollow cylinder;

[0008] A connecting piece is installed in a non-enclosed manner on the upper end of the hollow cylinder, and an elastic piece is connected between the connecting piece and the blocking plate.

[0009] As a further solution of the utility model: a step is provided at the upper end of the inner part of the hollow tube, and the edge of the blocking plate is slidably fitted with the inner wall of the hollow tube located below the step.

[0010] As a further solution of the utility model: the connecting piece is a cover plate, the cover plate is detachably connected to the top of the hollow cylinder, and an air hole communicating with the interior of the hollow cylinder is provided on the cover plate.

[0011] As a further solution of the utility model: the cover plate is connected to the upper end of the hollow cylinder by screws.

[0012] As a further solution of the utility model: a boss is provided at the lower end of the hollow cylinder, and the hollow cylinder is detachably connected to the water pump body via the boss.

[0013] As a further solution of the utility model: the boss is connected to the water pump body by gluing.

[0014] Beneficial effects of the utility model:

[0015] (1) When the water pump body of the utility model is used in a projector housing, under normal conditions, since the blocking plate is disposed in the inner cavity of the hollow cylinder and fits against the inner wall of the hollow cylinder, when the projector falls over and tilts, water leaking from the small hole will not leak out to the outside of the water pump body due to the blocking plate, thereby avoiding affecting other components in the projector housing;

[0016] (2) The pump body may cause the internal air pressure to change due to its own operation. When the air pressure change is small, the plugging plate will slide on the inner wall below the step in the hollow cylinder under the elastic force of the spring to adjust the air pressure balance inside the pump body. At this time, the plugging plate can still play a role in preventing water leakage;

[0017] (3) When the air pressure changes greatly, the baffle will move out of the position below the step and reach the inside of the step. At this time, since the inner diameter of the baffle is smaller than the inner diameter of the step, there is a gap between the baffle and the step. The air flows out from the air holes through the gap, which can prevent the internal pressure of the water pump body from being too high and causing the water pump body to malfunction. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The utility model is further described below in conjunction with the accompanying drawings.

[0019] Figure 1 It is a structural schematic diagram of a water pump that prevents tipping and leakage according to an embodiment of the utility model;

[0020] Figure 2 The difference between the water pump that prevents dumping and leakage in one embodiment of the utility model and Figure 1 Schematic diagram of the structure;

[0021] Figure 3 The utility model is a schematic diagram of the internal structure of a water pump that prevents tipping and leakage according to an embodiment of the utility model.

[0022] In the figure: 100, water pump body; 200, hollow cylinder; 201, convex seat; 202, step; 300, cover plate; 301, air hole; 400, spring; 500, blocking plate. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] See also Figure 1-2 As shown, the utility model is a water pump that prevents tipping and leakage, including a water pump body 100. A small hole is provided at the upper end of the water pump body 100. The small hole is a conventional setting on the water pump body 100 and has multiple uses. It is usually used to dissipate heat or balance air pressure for the water pump body 100, or is used as a water injection hole or overflow hole. The small hole is open. When used as a heat dissipation device inside a projector casing, when the projector tilts, the water pump body 100 will tilt accordingly, and the small hole thereon may leak.

[0025] In order to avoid this problem, in the present utility model, please refer to Figure 3 A hollow cylinder 200 is installed at the upper end of the water pump body 100, and a convex seat 201 extending outward is provided at the lower part of the hollow cylinder 200, and a step 202 is provided at the upper end of the hollow cylinder 200; a cover plate 300 is installed at the upper end of the hollow cylinder 200, and the cover plate 300 is detachably installed on the upper end of the hollow cylinder 200 by four screws; two air holes 301 connected to the inner cavity of the hollow cylinder 200 are provided on the cover plate 300 to prevent the cover plate 300 from sealing the upper end of the hollow cylinder 200;

[0026] A blocking plate 500 is provided in the inner cavity of the hollow cylinder 200 at the lower part of the step 202, and the edge of the blocking plate 500 is slidably fitted with the inner wall of the hollow cylinder 200. A spring 400 is connected at the upper center of the blocking plate 500 and the lower center of the cover plate 300. It should be noted that in other embodiments, the spring 400 can also be replaced by the same elastic member with elastic connection effect, such as a spring sheet, etc.; the blocking plate 500 moves up and down under the elastic force of the spring 400. In order to ensure that the linear movement of the spring 400 in the up and down directions is more precise, a telescopic sleeve can also be connected between the blocking plate 500 and the cover plate 300.

[0027] The boss 201 is connected to the water pump body 100 by gluing; glue is applied around the small hole at the upper end of the water pump body 100 or at the bottom of the boss 201, and then the boss 201 is pressed against the outside of the small hole to connect the small hole with the inner cavity of the hollow cylinder 200; after the glue dries, the hollow cylinder 200 is installed on the water pump body 100 through the boss 201.

[0028] The working principle of this utility model:

[0029] When the water pump body 100 is used in the projector housing, under normal conditions, since the blocking plate 500 is arranged in the inner cavity of the hollow cylinder 200 and fits with the inner wall of the hollow cylinder 200, when the projector is tilted, water leaking from the small hole will not leak to the outside of the water pump body 100 due to the blocking of the blocking plate 500, thereby avoiding affecting other components in the projector housing; at the same time, the water pump body 100 may cause the internal air pressure to change due to its own operation. When the air pressure change is small, the blocking plate 500 will be in the air under the elastic force of the spring 400. The plugging plate 500 slides on the inner wall below the step 202 in the core tube 200 to adjust the air pressure balance inside the water pump body 100. At this time, the plugging plate 500 can still prevent water leakage; when the air pressure changes greatly, the plugging plate 500 will escape from the position below the step 202 and reach the step 202. At this time, since the inner diameter of the plugging plate 500 is smaller than the inner diameter of the step 202, there is a gap between the plugging plate 500 and the step 202. The airflow flows out from the air hole 301 through the gap, which can prevent the internal pressure of the water pump body 100 from being too high and causing the water pump body 100 to malfunction.

[0030] In the description of the present utility model, it should be understood that the terms "upper", "lower", "left", "right", etc. indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, and a specific direction structure and operation, and therefore, cannot be understood as a limitation on the present utility model. In addition, "first" and "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0031] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", etc. should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0032] The above is a detailed description of an embodiment of the utility model, but the content is only a preferred embodiment of the utility model and cannot be considered to limit the scope of implementation of the utility model. All equivalent changes and improvements made within the scope of application of the utility model should still fall within the scope of the patent coverage of the utility model.

Claims

1. A water pump for preventing tipping and leakage, comprising a water pump body (100), wherein a small hole is provided at the upper end of the water pump body (100); characterized in that: A hollow cylinder (200) is installed at the upper end of the water pump body (100), and the small hole is located in the hollow cylinder (200); a blocking plate (500) is provided in the hollow cylinder (200), and the edge of the blocking plate (500) is slidably fitted with the inner wall of the hollow cylinder (200); A connecting piece is installed in a non-enclosed manner on the upper end of the hollow cylinder (200), and an elastic piece is connected between the connecting piece and the blocking plate (500).

2. The water pump for preventing dumping and leakage according to claim 1, characterized in that: A step (202) is provided at the upper end of the hollow cylinder (200), and the edge of the blocking plate (500) is slidably fitted with the inner wall of the hollow cylinder (200) located below the step (202).

3. The water pump for preventing dumping and leakage according to claim 1, characterized in that: The connecting member is a cover plate (300), the cover plate (300) is detachably connected to the top of the hollow cylinder (200), and an air hole (301) communicating with the interior of the hollow cylinder (200) is provided on the cover plate (300).

4. The water pump for preventing dumping and leakage according to claim 3 is characterized in that: The cover plate (300) is connected to the upper end of the hollow cylinder (200) by means of screws.

5. The water pump for preventing dumping and leakage according to claim 1, characterized in that: A convex seat (201) is provided at the lower end of the hollow cylinder (200), and the hollow cylinder (200) is detachably connected to the water pump body (100) via the convex seat (201).

6. The water pump for preventing dumping and leakage according to claim 5, characterized in that: The convex seat (201) and the water pump body (100) are connected by gluing.

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