A pilot-operated water injector with a self-closing function

Abstract

The present invention discloses a pilot-type water injector with a self-closing function, which comprises: a water inlet hole, a water outlet hole, and a main valve longitudinally arranged in the middle. Among them: there is also a water inlet groove between the water inlet hole and the main valve. The water inlet groove is horizontally arranged and its lower part is also connected with a longitudinally arranged pilot hole, and a pilot valve is installed in the pilot hole; the main valve and the pilot valve are arranged in parallel, and there is a lever between the pilot valve stem of the pilot valve and the main valve stem of the main valve. The middle fulcrum of the lever is located on the side wall of the water injector; the pilot valve stem is also connected with a floating ball, and the body of the floating ball floats on the liquid surface and longitudinally abuts against and pushes the pilot valve stem. Through the device of the present application, it can be automatically opened when there is water, and automatically closed when the water is full or the liquid level reaches.

Description

Technical Field

[0001] The present invention relates to a pilot-type water injector with a self-closing function. Background Art

[0002] Lead-acid batteries are one of the main power devices for various mobile electric tools and have a wide range of applications in transportation, communication facilities, vehicles and ships, etc. Regularly replenishing the electrolyte (water) in lead-acid batteries is an important part of their daily maintenance. The power supply of mobile electric tools is generally provided by a battery pack composed of multiple batteries. There is a water injection port with a diameter of about 2 cm above each battery, and the water level needs to be controlled within a certain range each time when adding water.

[0003] However, there are still technical problems in the downstream technology. Since the water injection port is small and the water level cannot be observed when adding water, the water often overflows. The overflowed water mixed with the sulfuric acid in the battery has certain corrosiveness and is troublesome to handle; it corrodes the wiring terminals on the battery, resulting in a shorter service life of spare parts; there is a potential safety hazard of battery short circuit and burnout. Summary of the Invention

[0004] The purpose of the present invention is to provide a pilot-type water injector with a self-closing function, which can achieve reliable water injection and adjustment, avoid the hidden dangers and defects in the prior art, and realize reliable and stable operation.

[0005] To achieve the above technical purpose, the present invention provides a pilot-type water injector with a self-closing function, which includes: a water inlet hole, a water outlet hole, and a main valve longitudinally arranged in the middle. Among them: there is also a water inlet groove between the water inlet hole and the main valve. The water inlet groove is transversely arranged and its lower part is also connected with a longitudinally arranged pilot hole. A pilot valve is installed in the pilot hole; the main valve and the pilot valve are arranged in parallel. There is a lever between the pilot valve stem of the pilot valve and the main valve stem of the main valve. The middle fulcrum of the lever is located on the side wall of the water injector; the pilot valve stem is also connected with a floating ball. The body of the floating ball floats on the liquid surface and longitudinally abuts against and pushes the pilot valve stem.

[0006] The present invention provides a pilot-type water injector with a self-closing function, which can be automatically opened when there is water and automatically closed when the water is full or the water level reaches.

[0007] As a further improvement, the two ends of the lever are respectively rotatably connected with the pilot valve stem and the main valve stem. The pilot valve stem and the main valve stem move relatively up and down in the longitudinal direction with respect to the middle fulcrum of the lever.

[0008] As a further improvement, the pilot hole is a conical hole and its upper diameter is smaller than the lower diameter.

[0009] As a further improvement, the pilot valve spool of the pilot valve is conical and matches the side wall of the pilot hole. The bottom of the main valve is conical and seals and isolates the water outlet hole from the water inlet tank.

[0010] As a further improvement, the upper part of the pilot valve stem is rotatably connected to one end of the lever, and the bottom of the main valve stem is rotatably connected to the other end of the lever.

[0011] As a further improvement, the lower part of the pilot valve stem is located inside the floating ball, and the bottom of the pilot valve stem is fixedly connected to the floating ball through a locking buckle.

[0012] As a further improvement, a connecting member is rigidly and fixedly connected to the middle part of the pilot valve stem. The connecting member is in the shape of a rod arranged horizontally, and a liquid level pointer arranged longitudinally is rigidly and fixedly connected to the rear end of the connecting member.

[0013] As a further improvement, the liquid level pointer is longitudinally arranged upward from the rear end of the connecting member and has a scale located above the water injector.

[0014] As a further improvement, the liquid level pointer reflects the relative vertical position of the floating ball on the liquid surface on the scale through the connecting member and the pilot valve stem.

[0015] As a further improvement, the water injector is integrally formed by 3D printing.

[0016] The structure of the present invention is simple, easy to use, automatically adjustable, convenient for actual production applications, and can ensure quality and efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic structural diagram of the present invention.

[0018] Reference numerals: water injector 1, main valve 2, lever 3, pilot valve 4, floating ball 5, locking buckle 6, water inlet hole 7, water outlet hole 8, water inlet tank 9, pilot hole 10, connecting member 11, liquid level pointer 12. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0020] Such as Figure 1As shown in the figure, the present invention provides a pilot type water injector with a self - closing function, which includes: a water inlet hole 7, a water outlet hole 8, and a main valve 2 located in the middle and arranged longitudinally. Among them: there is also a water inlet tank 9 between the water inlet hole 7 and the main valve 2. The water inlet tank is arranged horizontally, and a longitudinally arranged pilot hole 10 is connected to its lower part. A pilot valve 4 is installed in the pilot hole; the main valve and the pilot valve are arranged in parallel. There is a lever 3 between the pilot valve stem of the pilot valve and the main valve stem of the main valve. The middle fulcrum of the lever is located on the side wall of the water injector 1; the pilot valve stem is also connected to a floating ball 5. The body of the floating ball floats on the liquid surface and longitudinally abuts against and pushes the pilot valve stem.

[0021] As a further improvement, the two ends of the lever are respectively rotatably connected to the pilot valve stem and the main valve stem. The pilot valve stem and the main valve stem move relatively up and down in the longitudinal direction with respect to the middle fulcrum of the lever.

[0022] As a further improvement, the pilot hole 10 is a conical hole and its upper diameter is smaller than the lower diameter.

[0023] As a further improvement, the pilot valve core of the pilot valve is conical and matches the side wall of the pilot hole 10. The bottom of the main valve is conical and hermetically isolates the water outlet hole 8 from the water inlet tank.

[0024] As a further improvement, the upper part of the pilot valve stem is rotatably connected to one end of the lever, and the bottom of the main valve stem is rotatably connected to the other end of the lever.

[0025] As a further improvement, the lower part of the pilot valve stem is located inside the floating ball 5, and the bottom of the pilot valve stem is fixedly connected to the floating ball 5 through a lock 6.

[0026] As a further improvement, a connecting member 11 is rigidly and fixedly connected to the middle of the pilot valve stem. The connecting member 11 is in the shape of a horizontally arranged rod, and a longitudinally arranged liquid level pointer 12 is rigidly and fixedly connected to the rear end of the connecting member 11.

[0027] As a further improvement, the liquid level pointer 12 is longitudinally arranged upward from the rear end of the connecting member 11 and has a scale located at the upper part of the water injector.

[0028] As a further improvement, the liquid level pointer 12 reflects the relative up - and - down position of the floating ball on the liquid surface on the scale through the connecting member 11 and the pilot valve stem.

[0029] As a further improvement, the water injector 1 is integrally formed by 3D printing.

[0030] The structure of the present invention is simple and convenient to use. It can be automatically adjusted, facilitating practical production applications, and ensuring quality and efficiency.

[0031] The present invention provides a pilot - type water injector with a self - closing function. Both the pilot valve spool and the main valve spool adopt a conical form to seal the valve hole. The pilot valve spool is connected to the valve stem, and the main valve spool is connected to the main valve stem. The lever is installed on the pilot valve stem and is connected to the main valve stem.

[0032] When water enters from the water inlet hole, the pilot valve spool moves downward under the action of water pressure. Through the lever action, the main valve spool is lifted upward, thereby opening the water outlet hole of the water injector for water injection. The float ball is made of foam material and can float on the liquid surface. It is connected to the pilot valve stem. When the water is full or the liquid level reaches a certain level, the float ball is pushed up under the action of buoyancy, driving the pilot valve spool to move upward, closing the pilot valve through the conical surface. At the same time, under the lever action, the main valve spool is pulled down, closing the water outlet hole through the conical surface.

[0033] The liquid - level pointer plays a role in indicating the liquid level. The floating position of the float ball can be understood through the liquid - level pointer. The liquid - level pointer is connected to the pilot valve stem through a connecting piece. The liquid - level pointer is parallel to the pilot valve stem, and the connecting piece is perpendicular to both the liquid - level pointer and the pilot valve stem. The liquid - level pointer, the connecting piece, and the pilot valve stem are integrally formed without movable points, and the liquid - level pointer can move synchronously with the pilot valve stem. When the liquid level reaches the position of the float ball, the liquid - level pointer gradually rises upward as the float ball floats. A scale is pasted on the exposed part above the liquid - level pointer, thus playing a role in indicating the liquid level.

[0034] The water injector is made by 3D printing. The length of the pilot valve stem and the water injection hole diameter can be adjusted in real - time according to the liquid - level height and the size of the water injection hole.

[0035] The present invention designs a water injector that can be automatically opened when there is water and automatically closed when the water is full or the liquid level reaches a certain level. The technical solution adopted is as follows: The pilot valve is actuated by a small water flow. The pilot valve opens the main water inlet valve to start adding water through the lever action. A foam float ball is installed below the pilot valve stem. When the liquid level reaches the position of the float ball, the float ball is pushed up, thereby driving the pilot valve to act, and the pilot valve closes the main valve through the lever. The beneficial effects of the present invention are to accurately add water to a perforated container with an easily unobservable liquid level, prevent safety problems caused by liquid overflow, improve work efficiency, and extend the service life of the product.

[0036] The pilot - type water injector with a self - closing function disclosed by the present invention adopts a pilot - type opening method of driving a large flow with a small flow; the pilot - type water injector with a self - closing function adopts a pure mechanical switching method of opening and closing with a lever and a conical surface; the pilot - type water injector with a self - closing function is integrally formed by 3D printing, with low cost and wide applications.

[0037] The present invention relates to a pilot-type water injector with a self-closing function, which is opened and closed in a pure mechanical manner, adopts a pilot-type opening method of driving a large flow rate with a small flow rate, does not require liquid level detection electrical components, does not require solenoid valves, and is not plugged in. It automatically opens during water injection and automatically closes when the water is full or the liquid level reaches. It can be widely used for adding water and replenishing water in sealed containers where the liquid level is not easy to observe, which can make the product maintenance more accurate and convenient, and improve the maintenance efficiency and effect.

[0038] It should be understood that the scope of protection of the present invention is not limited to the non-restrictive embodiments, and it should be understood that the non-restrictive embodiments are only illustrative as examples. The substantial scope of protection required by this application is more reflected in the scope provided by the independent claims and their dependent claims.

Claims

1. A pilot-operated water injector with a self-closing function, which comprises: a water inlet hole, a water outlet hole, and a main valve longitudinally arranged therebetween, characterized in that: there is also a water inlet groove between the water inlet hole and the main valve, the water inlet groove is transversely arranged and its lower part is also connected with a longitudinally arranged pilot hole, and a pilot valve is installed in the pilot hole; the main valve and the pilot valve are arranged in parallel, there is a lever between the pilot valve stem of the pilot valve and the main valve stem of the main valve, and the middle fulcrum of the lever is located on the side wall of the water injector; the pilot valve stem is also connected with a floating ball, and the body of the floating ball floats on the liquid surface and longitudinally abuts against and pushes the pilot valve stem; both ends of the lever are rotatably connected with the pilot valve stem and the main valve stem respectively, and the pilot valve stem and the main valve stem move relatively up and down in the longitudinal direction with respect to the middle fulcrum of the lever; a connecting piece is rigidly and fixedly connected to the middle of the pilot valve stem, the connecting piece is in the shape of a rod arranged transversely, and a longitudinally arranged liquid level pointer is rigidly and fixedly connected to the rear end of the connecting piece; the liquid level pointer is longitudinally arranged upward from the rear end of the connecting piece and has a scale located at the upper part of the water injector.

2. A pilot-operated water injector with a self-closing function according to claim 1, characterized in that: the pilot hole is a conical hole and its upper diameter is smaller than its lower diameter.

3. A pilot-operated water injector with a self-closing function according to claim 2, characterized in that: the pilot valve core of the pilot valve is conical and matches the side wall of the pilot hole, and the bottom of the main valve is conical and can seal and isolate the water outlet hole from the water inlet groove.

4. A pilot-operated water injector with a self-closing function according to claim 3, characterized in that: the upper part of the pilot valve stem is rotatably connected with one end of the lever, and the bottom of the main valve stem is rotatably connected with the other end of the lever.

5. A pilot-operated water injector with a self-closing function according to claim 4, characterized in that: the lower part of the pilot valve stem is located inside the floating ball, and the bottom of the pilot valve stem is fixedly connected with the floating ball through a lock.

6. A pilot-operated water injector with a self-closing function according to claim 1, characterized in that: the liquid level pointer reflects the relative up and down position of the floating ball on the liquid surface on the scale through the connecting piece and the pilot valve stem.

7. A pilot-operated water injector with a self-closing function according to claim 6, characterized in that: the water injector is integrally formed by 3D printing.

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