positive pressure gauge

Abstract

The application discloses a positive pressure instrument and belongs to the technical field of positive pressure instrument equipment, comprising a working box body, an executing assembly, a sealing assembly and a feeding mechanism are arranged on the working box body. The executing assembly with a liftable driving mechanism is arranged on the working box body, cooperates with the sealing assembly which is composed of an upper sealing block and a lower sealing block and forms a sealing cavity, and the sealing pad embedded at the bottom of the lower sealing block and provided with a plurality of groups of air holes matched with the positions of the workpieces to be filtered, so that a precise airflow transmission path is constructed. The positive pressure airflow can be directly applied to the cleaning area of the workpiece to be filtered in a directional and concentrated manner through the air holes, air source waste caused by airflow dispersion is avoided, impurities are prevented from being blown to other precise areas of the workpiece by the diffusion airflow to cause secondary pollution, and the effectiveness and reliability of the cleaning operation of the positive pressure instrument are remarkably improved.

Description

Technical Field

[0001] This application relates to the field of positive pressure device technology, and in particular to positive pressure devices. Background Technology

[0002] In industrial production, especially in scenarios involving the machining and assembly of precision parts, the requirements for the cleanliness of workpiece surfaces are becoming increasingly stringent. Residual dust, metal shavings, oil, and other impurities on workpiece surfaces can not only affect subsequent assembly accuracy and product performance, but may even lead to equipment malfunctions. Therefore, efficient and precise workpiece cleaning equipment has become an indispensable key component of industrial production processes. Positive pressure cleaning devices, which utilize positive pressure airflow to clean workpieces, are widely used in fields such as electronic components, automotive parts, and aerospace components due to their ease of operation and high cleaning efficiency.

[0003] For related technologies, please refer to Chinese Patent No. CN216491388U, which discloses an intelligent explosion-proof positive pressure instrument cabinet, including an instrument cabinet body. The bottom of the instrument cabinet body is fixed with a base. The base is provided with a moving mechanism. The moving mechanism includes a take-up and put-down groove located at the bottom of the base. The take-up and put-down groove is provided with a movable plate. The bottom of the movable plate is provided with casters. The upper end of the movable plate is provided with a drive mechanism located inside the base. The drive mechanism is used to drive the movable plate to move up and down reciprocally.

[0004] However, in practical applications, the positive pressure device with filtration function disclosed in the aforementioned patent still has significant technical defects, making it difficult to fully meet the high-efficiency and targeted cleaning needs of industrial production. Specifically, the core defect of this positive pressure device lies in the lack of a structure that can directly blow air onto the filtered workpiece. From its structural design, the air outlet pipe of this positive pressure device is just a conventional tubular structure, and its output positive pressure airflow is diffused, unable to form a concentrated, directional airflow beam that directly acts on the surface of the workpiece to be cleaned. In actual operation, the operator needs to hold the air outlet pipe or adjust the position of the workpiece to bring the airflow as close to the workpiece as possible. Even so, the airflow is still easily dispersed into the surrounding environment, not only causing most of the airflow to not actually act on the area of ​​the workpiece to be cleaned, resulting in wasted air source and low cleaning efficiency, but also potentially blowing impurities on the workpiece surface to other precision areas that do not need cleaning, causing secondary pollution.

[0005] In response to the aforementioned technologies, it is necessary to improve the structure of existing positive pressure devices and design a structure that can directly and directionally blow air onto the filtered workpiece to overcome the shortcomings of existing technologies and enhance the practical value of positive pressure devices. Utility Model Content

[0006] In order to improve the working efficiency of the positive pressure instrument and enable it to directly and centrally blow air onto the workpiece to be filtered, this application provides a positive pressure instrument.

[0007] This application provides a positive pressure meter, which adopts the following technical solution:

[0008] The positive pressure device includes: a working housing, and also includes:

[0009] An execution component is provided, including at least one set of execution components, wherein the execution component includes a liftable drive mechanism disposed in the working box, and the output end of the liftable drive mechanism passes through the working box and extends upward;

[0010] A sealing assembly is fixedly connected to the moving end of a lifting drive mechanism. The sealing assembly includes an upper sealing block and a lower sealing block. The upper sealing block and the lower sealing block are tightly connected to form a sealing cavity. A vent valve communicating with the sealing cavity is fixedly provided at the upper end of the upper sealing block. A sealing gasket communicating with the sealing cavity is embedded at the bottom of the lower sealing block. Multiple sets of vent holes that match the position of the workpiece to be filtered are opened on the sealing gasket.

[0011] The feeding mechanism is located on the upper surface of the working box and is matched with the sealing gasket.

[0012] Optionally, the working chamber is further provided with a ventilation component, which includes an air inlet, an air outlet, an air inlet pressure regulator, and an air inlet pressure gauge, all located on the working chamber. The air outlet is connected to a ventilation valve via a pipe.

[0013] Optionally, the other side of the working chamber is also provided with a pressure regulating component that communicates with the ventilation component and is used to regulate the pressure inside the ventilation component. The pressure regulating component includes a low-flow pressure regulator, a high-flow pressure regulator, a low-flow pressure gauge, and a high-flow pressure gauge. The low-flow pressure regulator and the low-flow pressure gauge are connected in series to form a low-flow regulating branch, and the high-flow pressure regulator and the high-flow pressure gauge are connected in series to form a high-flow regulating branch. The low-flow regulating branch and the high-flow regulating branch are connected in parallel to realize pressure regulation and monitoring under low-flow and high-flow conditions, respectively.

[0014] Optionally, the working chamber is also equipped with a flow meter, one end of which is connected to the pressure regulating component, and the other end is used to output airflow. The flow meter is used to monitor the flow rate of the airflow in the device in real time.

[0015] Optionally, it also includes a control knob electrically connected to the actuator, which controls the up-and-down movement of the movable end of the lifting drive mechanism.

[0016] Optionally, the lifting actuator includes an adjustable stroke cylinder and a push rod fixedly connected to the output end of the adjustable stroke cylinder. The push rod is fixedly connected to the bottom of both ends of the lower sealing block. The adjustable stroke cylinder synchronously drives the push rod to move up and down through air pressure. The output end of the adjustable stroke cylinder can only drive the push rod to stay in two fixed positions, up and down.

[0017] Optionally, the sealing gasket has 96 vent holes, and the positions of the vent holes are matched with the positions of the holes in the workpiece to be filtered.

[0018] Optionally, the feeding mechanism includes two sets of symmetrically arranged slide rails on the working box and a slide plate slidably connected to the two sets of slide rails, on which the workpiece to be filtered is placed.

[0019] In summary, this application includes at least one of the following beneficial technical effects:

[0020] This invention utilizes an execution component mounted on the working chamber, along with a sealing component consisting of an upper and lower sealing block forming a sealed cavity, and a sealing gasket with multiple vent holes embedded in the bottom of the lower sealing block that correspond to the position of the workpiece to be filtered. This constructs a precise airflow transmission path, enabling positive pressure airflow to act directly and directionally on the area to be cleaned of the workpiece through the vent holes. This avoids the waste of air source caused by airflow dispersion and prevents impurities from being blown by the diffused airflow to other precision areas of the workpiece, thus preventing secondary pollution. This significantly improves the effectiveness and reliability of the positive pressure cleaning operation. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the formal structure of a positive pressure device.

[0022] Figure 2 This is a three-dimensional structural diagram of a positive pressure device.

[0023] Figure 3 This is a structural diagram of the positive pressure device in its working state.

[0024] Figure 4 This is a schematic diagram of the positive pressure device from another perspective during its working state.

[0025] Explanation of reference numerals in the attached drawings: 1. Working chamber; 11. Ventilation assembly; 101. Air inlet; 102. Air outlet; 103. Air inlet pressure regulator; 104. Air inlet pressure gauge; 12. Pressure regulating assembly; 121. Low flow pressure regulator; 122. High flow pressure regulator; 123. Low flow pressure gauge; 124. High flow pressure gauge; 13. Flow meter; 2. Actuation assembly; 21. Liftable drive mechanism; 22. Control knob; 23. Push rod; 3. Sealing assembly; 31. Upper sealing block; 32. Lower sealing block; 33. Ventilation valve; 34. Sealing gasket; 4. Feeding mechanism; 41. Slide rail; 42. Slide plate. Detailed Implementation

[0026] The present application will be further described in detail below with reference to all the accompanying drawings.

[0027] This application discloses a positive pressure device.

[0028] Reference Figure 1 The positive pressure device includes a working chamber 1, an execution component 2, a sealing component 3, and a feeding mechanism 4.

[0029] Reference Figures 1 to 4 The system includes: an execution component 2, at least one execution component 2, which includes a lifting drive mechanism 21 located inside the working housing 1, the output end of which passes through the working housing 1 and extends upward; a sealing component 3, fixedly connected to the moving end of the lifting drive mechanism 21, which includes an upper sealing block 31 and a lower sealing block 32, which are tightly connected to form a sealing cavity; a vent valve 33 fixedly provided at the upper end of the upper sealing block 31, communicating with the sealing cavity; and a sealing gasket 34 embedded at the bottom of the lower sealing block 32, communicating with the sealing cavity, with multiple sets of vent holes on the sealing gasket 34 that match the position of the workpiece to be filtered; and a feeding mechanism 4, located on the upper surface of the working housing 1 and positioned relative to the sealing gasket 34. In conjunction with this, the working housing 1 provides an installation carrier, and the lifting drive mechanism 21 drives the push rod 23 to lift the sealing component 3. The sealing cavity formed by the upper sealing block 31 and the lower sealing block 32, the vent valve 33 connecting the sealing cavity, and the sealing gasket 34 with vent holes embedded at the bottom are used. The sealing gasket 34 has 96 vent holes, and the positions of the vent holes are matched with the positions of the holes of the workpiece to be filtered to construct a directional blowing channel. This allows the positive pressure airflow to accurately act on the workpiece to be filtered through the vent holes, avoiding the cleaning inefficiency and secondary pollution problems caused by airflow diffusion in the prior art. At the same time, the feeding mechanism 4 is added to realize the preset position positioning of the workpiece to be filtered, ensuring the precise matching of the workpiece and the vent holes of the sealing gasket 34, providing a prerequisite for subsequent efficient cleaning.

[0030] Reference Figure 4The working chamber 1 is also equipped with a ventilation component 11, which includes an air inlet 101, an air outlet 102, an air inlet pressure regulator 103, and an air inlet pressure gauge 104. The air outlet 102 is connected to the ventilation valve 33 through a pipe. By adding the ventilation component 11, the air inlet 101 enables the access of an external air source, and the air outlet 102 enables airflow communication with the ventilation valve 33, establishing a complete airflow path. At the same time, the air inlet pressure regulator 103 and the air inlet pressure gauge 104 are configured to realize real-time monitoring and adjustment of the initial pressure of the input airflow, avoiding the impact of air source pressure fluctuations on the cleaning effect, and further improving the practicality and reliability of the positive pressure device.

[0031] Reference Figures 1 to 3 On the other side of the working chamber 1, a pressure regulating component 12 is also provided, which is connected to the ventilation component 11 and used to regulate the pressure inside the ventilation component 11. The pressure regulating component 12 includes a low-flow pressure regulator 121, a high-flow pressure regulator 122, a low-flow pressure gauge 123, and a high-flow pressure gauge 124. The low-flow pressure regulator 121 and the low-flow pressure gauge 123 are connected in series to form a low-flow regulating branch, and the high-flow pressure regulator 122 and the high-flow pressure gauge 124 are connected in series to form a high-flow regulating branch. The low-flow regulating branch and the high-flow regulating branch are connected in parallel, respectively. To achieve pressure regulation and monitoring under low and high flow conditions, a pressure regulation component 12 is added, and two parallel regulation branches for low flow and high flow are designed. The low flow regulation branch is connected in series with the low flow pressure regulator 121 and the low flow pressure gauge 123, which is suitable for cleaning precision workpieces and avoids high pressure damage to the workpieces. The high flow regulation branch is connected in series with the high flow pressure regulator 122 and the high flow pressure gauge 124, which is suitable for cleaning workpieces with stubborn impurities and improves the cleaning effect. The parallel design of the two branches realizes precise pressure regulation and real-time monitoring under different working conditions.

[0032] Reference Figures 1 to 3 The working chamber 11 is also equipped with a flow meter 13. One end of the flow meter 13 is connected to the pressure regulating component 12, and the other end is used to output airflow. The flow meter 13 is used to monitor the flow rate of the airflow in the device in real time. By adding the flow meter 13, one end of the flow meter 13 is connected to the pressure regulating component 127, and the other end is used to output airflow. The flow rate of the airflow in the device can be monitored in real time. The operator can detect abnormal airflow in time based on the flow data, such as a sudden drop in flow due to blockage of the vent, so as to avoid affecting the cleaning effect due to flow problems. At the same time, it provides data support for subsequent optimization of cleaning parameters.

[0033] Reference Figures 1 to 3It also includes a control knob 22 electrically connected to the actuator. The control knob 22 controls the moving end of the lifting drive mechanism 21 to move up and down. By adding the control knob 22 electrically connected to the actuator, the operator can control the lifting drive mechanism 21 to drive the push rod 23 to move up and down by controlling the control knob 22. There is no need for complicated operation procedures, which simplifies the lifting control of the sealing assembly 3 and ensures that the sealing assembly 3 can quickly and accurately dock or separate from the workpiece.

[0034] Reference Figures 1 to 4 The lifting drive mechanism 21 is an adjustable stroke cylinder, and the adjustable stroke cylinder drives the push rod 23 to move up and down synchronously through air pressure. The push rod 23 is limited to only two fixed positions, ensuring that the push rod 23 is subjected to uniform force, avoiding the tilting of the sealing component 3, eliminating stroke deviation, and ensuring the docking accuracy between the sealing component 3 and the workpiece during each cleaning.

[0035] Reference Figures 1 to 4 The feeding mechanism 4 includes two sets of symmetrically arranged slide rails 41 on the working box 1 and a slide plate 42 slidably connected to the two sets of slide rails 41. The workpiece to be filtered is placed on the slide plate 42. The symmetrical slide rails 41 ensure the stability of the slide plate 42. The slide plate 42 serves as a workpiece carrying platform to restrict the movement of the workpiece. The operator can quickly push the slide plate 42 to load or unload the workpiece, while ensuring that the workpiece does not shift during the conveying and cleaning process and always remains aligned with the vent hole of the sealing gasket 34.

[0036] The implementation principle of the positive pressure device in this application embodiment is as follows: Based on the collaborative mechanism of "structural linkage positioning - precise airflow control - convenient operation and control", the device achieves directional and efficient cleaning of the workpiece to be filtered. The working box 1 serves as a unified installation carrier integrating various functional components: the feeding mechanism 4 moves the workpiece to be filtered to a preset position and limits it through the symmetrical slide rail 41 and the slide plate 42, ensuring that the area of ​​the workpiece to be cleaned is precisely aligned with the 96 matching air holes of the bottom sealing gasket 34 of the lower sealing block 32 of the sealing component 3. The operator triggers the adjustable stroke cylinder through the control knob 22. The cylinder air pressure synchronously drives the push rod 23 to move the sealing component 3 up and down. When the sealing component 3 moves down, the sealing gasket 34 fits against the workpiece. The upper and lower sealing blocks 32 constitute The sealed cavity provides a closed condition for directional airflow transmission; the external air source is connected through the air inlet 101 of the ventilation component 11, the initial pressure is adjusted by the air inlet pressure regulator 103 and monitored by the air inlet pressure gauge 104, the airflow enters the sealed cavity through the air outlet 102 and the ventilation valve 33, and then acts directionally on the workpiece through the ventilation hole. At the same time, the low flow and high flow parallel branches of the pressure regulating component 12 regulate the pressure respectively and are monitored by the corresponding pressure gauges. The flow meter 13 monitors the airflow in real time to judge abnormalities and support parameter optimization; after cleaning, the sealing component 3 moves upward to reset, and the feeding mechanism 4 transfers the workpiece to complete the unloading. The whole process does not require complex manual intervention, realizing a comprehensive improvement in cleaning accuracy, adaptability and work efficiency.

[0037] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. Positive pressure device, including: The working housing (1) is characterized in that it further includes: At least one set of execution components (2) is provided, the execution components include a liftable drive mechanism (21) disposed in the working box, the output end of the liftable drive mechanism (21) passes through the working box (1) and extends upward; A sealing assembly (3) is fixedly connected to the moving end of the lifting drive mechanism (21). The sealing assembly includes an upper sealing block (31) and a lower sealing block (32). The upper sealing block (31) and the lower sealing block (32) are tightly connected to form a sealing cavity. A vent valve (33) communicating with the sealing cavity is fixedly provided at the upper end of the upper sealing block (31). A sealing gasket (34) communicating with the sealing cavity is embedded at the bottom of the lower sealing block (32). A plurality of vent holes are provided on the sealing gasket (34) that match the position of the workpiece to be filtered. The feeding mechanism (4) is located on the upper end face of the working box (1) and is positioned in conjunction with the sealing gasket (34).

2. The positive pressure device according to claim 1, characterized in that: The working box (1) is also provided with a ventilation assembly (11), which includes an air inlet (101), an air outlet (102), an air inlet pressure regulator (103), and an air inlet pressure gauge (104) on the working box (1). The air outlet (102) is connected to the ventilation valve (33) through a pipe.

3. The positive pressure device according to claim 2, characterized in that: On the other side of the working chamber (1), there is also a pressure regulating component (12) that is connected to the ventilation component (11) and used to regulate the pressure inside the ventilation component (11). The pressure regulating component (12) includes a low flow pressure regulator (121), a high flow pressure regulator (122), a low flow pressure gauge (123), and a high flow pressure gauge (124). The low flow pressure regulator (121) and the low flow pressure gauge (123) are connected in series to form a low flow regulating branch. The high flow pressure regulator (122) and the high flow pressure gauge (124) are connected in series to form a high flow regulating branch. The low flow regulating branch and the high flow regulating branch are connected in parallel and are used to realize pressure regulation and monitoring under low flow and high flow conditions, respectively.

4. The positive pressure device according to claim 3, characterized in that: The working box (1) is also equipped with a flow meter (13). One end of the flow meter (13) is connected to the pressure regulating component (12), and the other end is used to output airflow. The flow meter (13) is used to monitor the flow rate of the airflow in the device in real time.

5. The positive pressure device according to claim 1, characterized in that: It also includes a control knob (22) electrically connected to the actuator (2), through which the moving end of the lifting drive mechanism (21) is controlled to move up and down.

6. The positive pressure device according to claim 5, characterized in that: The liftable drive mechanism (21) includes an adjustable stroke cylinder and a push rod (23) fixedly connected to the output end of the adjustable stroke cylinder. The push rod (23) is fixedly connected to the bottom of both ends of the lower sealing block (32). The adjustable stroke cylinder drives the push rod (23) to move up and down synchronously through air pressure. The output end of the adjustable stroke cylinder can only drive the push rod (23) to stay in two fixed positions, up and down.

7. The positive pressure device according to claim 1, characterized in that: The sealing gasket (34) has 96 vent holes, and the positions of the vent holes are matched with the positions of the holes in the workpiece to be filtered.

8. The positive pressure device according to claim 1, characterized in that: The feeding mechanism (4) includes two sets of symmetrically arranged slide rails (41) on the working box (1) and a slide plate (42) slidably connected to the two sets of slide rails (41), on which the workpiece to be filtered is placed.

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