Liquid supply control device of spraying machine
By introducing a multi-position control valve and a filter-based liquid supply control device into the sprayer, the problems of inconvenient filter cleaning and cumbersome spray liquid container orifices are solved, achieving convenient filter cleaning and simplified orifice design, and reducing the risk of leakage.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- WEIFANG SHENGCHUAN MACHINERY
- Filing Date
- 2025-05-09
- Publication Date
- 2026-05-12
AI Technical Summary
The filters in existing sprayers are inconvenient to clean temporarily, and the design of the spray liquid container orifice is cumbersome, which increases the complexity of manufacturing and installation and the risk of leakage.
The liquid supply control device employs a multi-position control valve and filter, including a valve body, a liquid supply connection port, a spray connection port, and a liquid discharge connection port. Individual connection or disconnection is achieved through a liquid on/off control mechanism, simplifying the orifice design of the spray liquid container.
提高了过滤器的拆解清理便利性，简化了喷施液容器的孔口设计，减少了泄露风险，并且结构紧凑，适合在有限空间内布置和操作方便。
Smart Images
Figure CN224219278U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of sprayer components, and in particular to a sprayer liquid supply control device. Background Technology
[0002] A sprayer is used to spray liquids (such as pesticides and liquid fertilizers) onto plants in a mist. Its structure includes a power system, an air supply system, and a spraying system. These systems are not independent of each other; their design, manufacturing, and use require comprehensive consideration of manufacturing processes, spatial layout, and functional coordination. For example, in a spraying system, a filter is used to filter the liquid in the pre-spraying pipeline to prevent impurities from reaching the nozzles and causing blockages. However, after a certain period of use or when the spray pressure is significantly insufficient, the filter needs to be disassembled and cleaned. But since the filter is directly connected to the liquid container, temporary disassembly and cleaning during spraying operations is difficult to implement. Therefore, the design and installation must consider the ease of disassembly and cleaning. For example, spray container has corresponding openings for connecting functional components. These openings include a drain valve for releasing and storing remaining spray liquid at the end of the spraying operation, a supply port for connecting to the spray pipeline, a level gauge opening for convenient real-time monitoring of the liquid level, and an installation port for installing a stirring mechanism. The presence of many openings increases the complexity of manufacturing and installation, and increases the risk of leakage. Therefore, simplifying the design of openings on spray container has always been an important consideration in the container design and manufacturing process. Taking into account both the temporary cleaning problem of the filter and the simplification of the spray container's openings, the inventors improved the spraying system, especially the liquid supply control part, resulting in this invention. Utility Model Content
[0003] The technical problem to be solved by this utility model is to provide a sprayer liquid supply control device that improves the convenience of temporary filter cleaning and facilitates the simplification of spray liquid container orifice design.
[0004] To solve the above-mentioned technical problems, the technical solution of this utility model is: a sprayer liquid supply control device, connected between the spray liquid container and the spray pump, including a multi-position control valve and a filter; the multi-position control valve includes a valve body, on which are provided a liquid supply connection port, a spray connection port and a liquid discharge connection port, the liquid supply connection port being used to connect the spray liquid container, and the spray connection port being used to connect the filter; the valve body is provided with a liquid flow control mechanism, the liquid flow control mechanism being used to individually connect the liquid supply connection port and the spray connection port, individually connect the liquid supply connection port and the liquid discharge connection port, or simultaneously disconnect the liquid supply connection port, the spray connection port and the liquid discharge connection port.
[0005] As a preferred technical solution, the on / off liquid control mechanism includes a valve core, and the valve core is connected to a switching operation structure.
[0006] As a preferred technical solution, the valve core is sealed and rotatably installed in the valve body, the spray connection port and the liquid discharge connection port are arranged opposite to each other in the radial direction of the valve core, the inner end of the valve core is provided with a liquid inlet channel that is normally connected to the liquid supply connection port, and the valve core is also provided with a liquid outlet channel that is radially connected to the liquid inlet channel. The liquid outlet channel is used to communicate with the spray connection port alone, communicate with the liquid discharge connection port alone, or be isolated from both the spray connection port and the liquid discharge connection port at the same time.
[0007] As a preferred technical solution, the transposition operation structure includes an operating handle.
[0008] As a preferred technical solution, the liquid supply port is threadedly connected to the spray liquid container.
[0009] As a preferred technical solution, threaded connectors are installed at the spray connection port and the liquid inlet of the filter, and a connecting hose is clamped between the two threaded connectors.
[0010] Due to the adoption of the above technical solution, the sprayer liquid supply control device, connected between the spray liquid container and the spray pump, includes a multi-position control valve and a filter. The multi-position control valve includes a valve body, on which are provided a liquid supply connection port, a spray connection port, and a liquid discharge connection port. The liquid supply connection port is used to connect the spray liquid container, and the spray connection port is used to connect the filter. The valve body is provided with a liquid flow control mechanism, which is used to individually connect the liquid supply connection port and the spray connection port, individually connect the liquid supply connection port and the liquid discharge connection port, or simultaneously disconnect the liquid supply connection port, the spray connection port, and the liquid discharge connection port. This utility model sets the multi-position control valve between the spray liquid container and the filter. When the liquid flow control mechanism individually connects the liquid supply connection port and the spray connection port, normal spraying liquid supply can be performed. When the liquid flow control mechanism simultaneously disconnects the liquid supply connection port, the spray connection port, and the liquid discharge connection port, the filter can be disassembled and cleaned at any time, improving the convenience of disassembly and cleaning. When the liquid supply connection port and the liquid discharge connection port are connected separately by the liquid on / off control mechanism, a liquid discharge operation can be performed. Based on the use of the multi-position control valve, only one orifice is needed on the spray liquid container to meet the spraying and discharging requirements, simplifying the orifice design of the spray liquid container. Furthermore, this invention has a compact structure and small size, making it easy to arrange in limited space on the machine body, and facilitating repositioning during use. Attached Figure Description
[0011] The following figures are intended only to illustrate and explain the present invention and do not limit the scope of the present invention. Wherein:
[0012] Figure 1This is a structural schematic diagram of Embodiment 1 of the present invention;
[0013] Figure 2 This is a schematic diagram of the liquid flow control mechanism in the spray position according to Embodiment 1 of this utility model;
[0014] Figure 3 This is a schematic diagram of the liquid flow control mechanism in the isolation position according to Embodiment 1 of this utility model;
[0015] Figure 4 This is a schematic diagram of the liquid flow control mechanism in Embodiment 1 of this utility model when it is in the liquid discharge position.
[0016] Figure 5 This is a three-dimensional structural diagram of the present invention installed at a certain spraying liquid container according to Embodiment 1;
[0017] Figure 6 This is a schematic diagram of the liquid flow control mechanism in Embodiment 2 of this utility model when it is in the spray position.
[0018] Figure 7 This is a schematic diagram of the principle of the liquid flow control mechanism in Embodiment 2 of this utility model when it is in the isolation position;
[0019] Figure 8 This is a schematic diagram of the liquid control mechanism in Embodiment 2 of this utility model when it is in the liquid discharge position.
[0020] In the diagram: 1-Spraying liquid container; 2-Spray pump; 3-Multi-position control valve; 31-Valve body; 32-Supply connection port; 33-Spray connection port; 34-Discharge connection port; 35-Valve core; 36-Inlet channel; 37-Outlet channel; 38-Switching operation structure; 391-Spray channel; 392-Discharge channel; 4-Filter. Detailed Implementation
[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments. In the following detailed description, only certain exemplary embodiments of the present invention are described by way of illustration. Undoubtedly, those skilled in the art will recognize that various modifications can be made to the described embodiments without departing from the spirit and scope of the present invention. Therefore, the drawings and description are illustrative in nature and not intended to limit the scope of the claims.
[0022] Example 1: As Figure 1As shown, the sprayer liquid supply control device, connected between the spray liquid container 1 and the spray pump 2, includes a multi-position control valve 3 and a filter 4. The multi-position control valve 3 includes a valve body 31, which is provided with a liquid supply connection port 32, a spray connection port 33, and a liquid discharge connection port 34. The liquid supply connection port 32 is used to connect to the spray liquid container 1, the spray connection port 33 is used to connect to the filter 4, and the spray connection port 33 is connected to the liquid inlet of the filter 4, while the liquid outlet of the filter 4 is connected to the spray pump 2.
[0023] The connection between the liquid supply port 32 and the spray liquid container 1, and the connection between the spray port 33 and the filter 4, can be achieved using one or more of the following methods, such as threaded connection, compression connection, flange connection, cartridge connection, and hose connection, as needed. No limitation is imposed here. For example, the liquid supply port 32 and the spray liquid container 1 can be directly threaded together; threaded connectors can be installed at the inlet of the spray port 33 and the filter 4, and a connecting hose can be clamped between the two threaded connectors.
[0024] like Figure 2 , Figure 3 and Figure 4 As shown, the valve body 31 is equipped with a liquid flow control mechanism. This mechanism is used to connect the liquid supply port 32 and the spray port 33 individually, connect the liquid supply port 32 and the discharge port 34 individually, or simultaneously disconnect the liquid supply port 32, the spray port 33, and the discharge port 34. Therefore, the multi-position control valve 3 is at least a three-position, three-way control valve. In this embodiment, the position where the liquid flow control mechanism connects the liquid supply port 32 and the spray port 33 individually is called the spray position; the position where it connects the liquid supply port 32 and the discharge port 34 individually is called the discharge position; and the position where it simultaneously disconnects the liquid supply port 32, the spray port 33, and the discharge port 34 is called the disconnect position.
[0025] Under normal circumstances, such as Figure 2 As shown, the liquid control mechanism is in the spray position, and the liquid supply port 32 and the spray port 33 are connected. When the spray pump 2 is started, it can draw the spray liquid from the spray liquid container 1 for spraying.
[0026] When filter 4 needs to be cleaned, such as Figure 3As shown, when the liquid control mechanism is switched to the isolation position, neither the spray connection port 33 nor the discharge connection port 34 is connected to the supply connection port 32. The channel between the filter 4 and the spray liquid container 1 is isolated, allowing the filter 4 to be disassembled and cleaned at any time. Therefore, the disassembly and cleaning of the filter 4 is not limited by the remaining liquid in the spray liquid container 1 or by time and location, greatly improving the convenience of disassembly and cleaning.
[0027] After the spraying operation is completed, if there is any remaining liquid in the spraying liquid container 1, it needs to be drained and stored, such as... Figure 4 As shown, when the liquid control mechanism switches to the discharge position, the liquid supply port 32 connects to the liquid discharge port 34, and the remaining liquid in the spray container 1 can be discharged through the liquid discharge port 34. Therefore, the liquid supply port 32 is preferably connected to the bottom or near the bottom of the spray container 1.
[0028] In this embodiment, by using the multi-position control valve 3, only one orifice is needed on the spray liquid container 1 to simultaneously meet the three requirements of spray liquid supply, liquid supply interruption during filter 4 cleaning, and residual liquid discharge after spraying, which simplifies the orifice design of the spray liquid container 1. Furthermore, the multi-position control valve 3 is small in size, resulting in a compact overall structure in this embodiment. Figure 5 As shown, it is convenient to arrange in the limited space on the machine body and easy to install; when in use, the required liquid flow can be achieved simply by operating the switching operation structure 38, and the operation is also very convenient.
[0029] For the multi-position control valve 3, this embodiment first provides a single valve core structure principle, that is, the liquid on / off control mechanism includes a valve core 35, and the valve core 35 is connected to a switching operation structure 38. The structure principle of this single valve core can be as follows: the valve core 35 is sealed and rotatably installed inside the valve body 31, the spray connection port 33 and the liquid discharge connection port 34 are arranged opposite to each other in the radial direction of the valve core 35, the inner end of the valve core 35 is provided with a liquid inlet channel 36 that is normally connected to the liquid supply connection port 32, and the valve core 35 is also radially provided with a liquid outlet channel 37 that is connected to the liquid inlet channel 36. Thus, by operating the valve core 35 to rotate through the switching operation structure 38, the working position switching of the liquid on / off control mechanism is realized. In other words, the working position of the liquid on / off control mechanism is also the working position of the valve core 35.
[0030] Accordingly, the liquid outlet channel 37 is used to communicate with the spray connection port 33 alone, communicate with the liquid discharge connection port 34 alone, or be simultaneously isolated from both the spray connection port 33 and the liquid discharge connection port 34; more specifically, the liquid outlet channel 37 is connected to the spray connection port 33 when the valve core 35 is in the spray position, the liquid outlet channel 37 is connected to the liquid discharge connection port 34 when the valve core 35 is in the liquid discharge position, and the liquid outlet channel 37 is isolated from both the spray connection port 33 and the liquid discharge connection port 34 when the valve core 35 is in the isolated position.
[0031] Under this structural principle, the valve body 31 is roughly T-shaped, and the valve core 35 can be cylindrical or spherical; there is no limitation here, but only a spherical shape is shown in the accompanying drawings of this embodiment. The switching operation structure 38 is used to rotate the valve core 35, thereby performing the switching operation. The switching operation structure 38 in this embodiment includes an operating handle, which is not limited to long rods or disc-shaped handles; of course, the switching operation structure 38 can also use a motor to make the multi-position control valve 3 an electric valve, and this method should also be within the scope of the switching operation structure 38.
[0032] In addition to the rotary valve core 35 mentioned above, the on / off liquid control mechanism in the multi-position control valve 3 can also adopt a sliding valve core 35 to achieve a three-position three-way function. All control valve structures capable of achieving the same three-position three-way function should be within the protection scope of the multi-position control valve 3. Of course, the valve body 31 in this embodiment is not limited to having only three connection ports: a supply port 32, a spray port 33, and a discharge port 34. When other on / off liquid functions need to be integrated simultaneously and additional connection ports are added, as long as the implementation methods listed in this embodiment (spray position, isolation position, and discharge position) are still present, they should all be within the protection scope of this utility model. Furthermore, in these structural solutions, the isolation position is limited to the isolation between the supply port 32 and the spray port 33 and discharge port 34, and does not restrict the supply port 32 from flowing with other integrated connection ports.
[0033] Example 2: Figure 6 , Figure 7 and Figure 8As shown, the main difference between this embodiment and Embodiment 1 is that it provides the structural principle of two additional valve cores 35. Specifically, the liquid control mechanism includes two valve cores 35 located at the spray connection port 33 and the liquid discharge connection port 34, respectively. Each valve core 35 is connected to a switching operation structure 38. The valve core 35 located at the spray connection port 33 is provided with a spray channel 391 for connecting the spray connection port 33 and the liquid supply connection port 32. The valve core 35 located at the liquid discharge connection port 34 is provided with a liquid discharge channel 392 for connecting the liquid discharge connection port 34 and the liquid supply connection port 32. Each valve core 35 includes two working positions: one for connecting and one for disconnecting.
[0034] Under normal circumstances, such as Figure 6 As shown, the valve core 35 located at the spray connection port 33 is switched to the position where the spray channel 391 connects the spray connection port 33 and the liquid supply connection port 32, while the valve core 35 located at the liquid discharge connection port 34 is switched to the position where the liquid discharge connection port 34 and the liquid supply connection port 32 are disconnected. The two valve cores 35 together constitute the spray position of the liquid on / off control mechanism at this time. When the spray pump 2 is started, the spray liquid in the spray liquid container 1 can be drawn for spraying.
[0035] When filter 4 needs to be cleaned, such as Figure 7 As shown, the valve core 35 located at the spray connection port 33 is switched to a position that isolates the spray connection port 33 and the liquid supply connection port 32. Neither the spray connection port 33 nor the liquid discharge connection port 34 is connected to the liquid supply connection port 32. The channel between the filter 4 and the spray liquid container 1 is isolated. The two valve cores 35 together constitute the isolation position of the liquid on / off control mechanism. At this time, the filter 4 can be disassembled and cleaned at any time, and the convenience of disassembly and cleaning work is greatly improved.
[0036] After the spraying operation is completed, if there is any remaining liquid in the spraying liquid container 1, it needs to be drained and stored, such as... Figure 8 As shown, the valve core 35 located at the liquid discharge port 34 switches to the position where the liquid discharge channel 392 connects the liquid discharge port 34 and the liquid supply port 32. The two valve cores 35 together constitute the liquid discharge position of the liquid on / off control mechanism, and the residual liquid in the spray liquid container 1 can be discharged through the liquid discharge port 34.
[0037] Based on the above structural principles, this embodiment also requires only one orifice on the spray liquid container 1 to simultaneously meet the three needs of spray liquid supply, liquid supply interruption during filter 4 cleaning, and residual liquid discharge after spraying, which simplifies the orifice design of the spray liquid container 1. Furthermore, this embodiment does not limit the valve body 31 to a single-piece structure; it can also be assembled from multiple valve body structures.
[0038] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, such as each valve core 35 in a two-valve-core structure also employing a sliding structure. These changes and modifications all fall within the scope of this utility model as claimed. The scope of protection of this utility model is defined by the appended claims and their equivalents.
Claims
1. A sprayer liquid supply control device, connected between the spray liquid container and the spray pump, characterized in that: The system includes a multi-position control valve and a filter. The multi-position control valve includes a valve body with a liquid supply port, a spray port, and a liquid discharge port. The liquid supply port is used to connect to the spray liquid container, and the spray port is used to connect to the filter. The valve body is provided with a liquid flow control mechanism, which is used to connect the liquid supply port and the spray port separately, connect the liquid supply port and the liquid discharge port separately, or simultaneously disconnect the liquid supply port, the spray port, and the liquid discharge port.
2. The sprayer liquid supply control device as described in claim 1, characterized in that: The on / off fluid control mechanism includes a valve core, which is connected to a switching operation structure.
3. The sprayer liquid supply control device as described in claim 2, characterized in that: The valve core is sealed and rotatably installed within the valve body. The spray connection port and the liquid discharge connection port are arranged opposite each other in the radial direction of the valve core. The inner end of the valve core is provided with a liquid inlet channel that is normally connected to the liquid supply connection port. The valve core is also provided with a liquid outlet channel that is radially connected to the liquid inlet channel. The liquid outlet channel is used to communicate with the spray connection port alone, communicate with the liquid discharge connection port alone, or be isolated from both the spray connection port and the liquid discharge connection port.
4. The sprayer liquid supply control device as described in claim 3, characterized in that: The transposition operation structure includes an operating handle.
5. The sprayer liquid supply control device as described in claim 1, characterized in that: The liquid supply port is threadedly connected to the spray liquid container.
6. The sprayer liquid supply control device as described in claim 1, characterized in that: The spray inlet and the filter inlet are respectively equipped with threaded connectors, and a connecting hose is clamped between the two threaded connectors.