Piezoelectric injection valve feeding and filtering device

Abstract

The utility model discloses a piezoelectric injection valve feed filtering device which comprises a filtering installation mechanism, a flow adjusting mechanism and a spring adjusting mechanism, and the filtering installation mechanism comprises a filtering cavity, an adjusting plate, a filtering net and a threaded ring. The flow adjusting mechanism comprises an adjusting pipe, a sliding rod, a sliding plate, an adjusting spring and a directional plate, the spring adjusting mechanism comprises a threaded pipe, a thrust bearing, a directional ring and a connecting block, the filter screen can effectively filter impurities in feeding fluid, particulate matter is prevented from entering the injection valve or other key components, and therefore blockage and damage of equipment are avoided, and the service life of the injection valve is prolonged. The filter screen is flexibly arranged, so that the filter screen can be adjusted according to needs and is convenient to clean or replace, the sliding rod in the adjusting pipe can adjust the degree of the adjusting plate close to or away from the threaded ring, and therefore the feeding flow is accurately controlled, it is ensured that the injection pressure of the injection valve system is stable, and the influence of flow fluctuation on equipment performance is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to valve filter technical field more specifically, it relates to a piezoelectric injection valve feed filter device. BACKGROUND

[0002] The piezoelectric injection valve feed filter device is an important component in precision liquid injection technology, especially widely used in micro-liquid injection, inkjet printing, electronic manufacturing, coating technology and other fields. The core function of the device is to ensure that the liquid entering the piezoelectric injection valve is fully filtered before injection to avoid the influence of particulate matter or impurities in the liquid on the injection accuracy and the long-term stability of the equipment.

[0003] In the existing technology, first, some devices may contain impurities in the fluid, which directly enters the injection valve system, which can easily cause the injection valve to be blocked or damaged. The entry of impurities or contaminants into the system can cause unstable performance of the injection valve, affecting product quality and injection accuracy. Without a filtering mechanism, it can lead to higher frequency of equipment failure or the need for additional cleaning work, increasing the cost and time of equipment maintenance. Secondly, the flow rate of some devices cannot be accurately controlled, which can cause the injection pressure of the injection valve to be unstable, affecting the injection accuracy. Poor flow control can make the injection process uneven, resulting in energy waste and poor injection effect, thereby reducing the overall system efficiency. Too large flow rate can cause overflow or the valve cannot withstand the pressure, and too small flow rate can cause insufficient injection, both of which can adversely affect the performance of the device. SUMMARY

[0004] (I) Technical problems solved

[0005] In view of the problems existing in the prior art, the utility model provides a piezoelectric injection valve feed filter device to solve the technical problems mentioned in the background art, such as impurities directly entering the injection valve system and the flow rate of the feed being unable to be accurately controlled.

[0006] (II) Technical solutions

[0007] To achieve the above object, the utility model provides following technical scheme: A piezoelectric injection valve feed filtering device, including filter installation mechanism, flow regulation mechanism and spring regulation mechanism, the filter installation mechanism includes filter cavity, adjusting plate, filter screen and screw ring, one end of filter screen is connected with the end face cooperation of adjusting plate, the other end of filter screen is connected with one end of screw ring, and screw ring is connected in one end of filter cavity, and filter screen is flexibly arranged, adjusting plate can be far away and close to screw ring, the flow regulation mechanism includes adjusting pipe, sliding rod, sliding plate, adjusting spring and directional plate, adjusting pipe is installed at the top end of filter cavity, sliding rod is arranged in the sliding of adjusting pipe, the directional plate on sliding rod is installed on the inner wall of adjusting pipe, adjusting plate is installed at one end of sliding rod, sliding plate is arranged in the sliding guide of adjusting pipe's inner wall, adjusting spring is installed between sliding plate and directional plate, spring pulls sliding plate, makes sliding rod slide, makes adjusting plate far away and close to screw ring.

[0008] The utility model further sets up, spring regulation mechanism includes screw pipe, thrust bearing, directional ring and connecting block, screw pipe is connected on the outer wall of adjusting pipe, thrust bearing is installed at the top end of screw pipe, directional ring is arranged in the directional sliding of adjusting pipe's outer wall, the top end of thrust bearing is in contact with the bottom of directional ring, connecting block is arranged in the sliding of adjusting pipe's side wall, connecting block links and slides directional ring and sliding plate.

[0009] The utility model further sets up, the bottom of filter cavity is equipped with bottom connection pipe, and bottom connection pipe is connected with external equipment, and bottom connection pipe is connected with screw ring, and the cooperation of bottom connection pipe and screw ring facilitates the introduction of feed fluid, and is easy to clean and maintain.

[0010] The utility model further sets up, the side of filter cavity is equipped with side connection pipe, and the side connection pipe is connected with external equipment, and the design of side connection pipe further improves the convenience of equipment installation and disassembly, so that the equipment can be flexibly connected with external equipment in different installation positions.

[0011] The utility model further sets up, one end of adjusting pipe and filter cavity is equipped with mounting plate, and mounting bolt is installed on mounting plate, and mounting bolt passes through mounting plate and is fixedly connected with filter cavity and adjusting pipe.

[0012] The utility model further sets up, one end of sliding rod is equipped with fixed block, and external bolt can pass through fixed block and be fixed in screw pipe, through the combination of fixed block and bolt, the stable sliding of sliding rod in adjusting pipe can be ensured, the loosening of part due to mechanical friction or external vibration is prevented, and the service life and working stability of the device are improved.

[0013] The utility model further sets up, the outer wall of adjusting pipe is equipped with guide groove, and the connecting block passes through guide groove and is connected with the cooperation of sliding plate, makes the directional ring with sliding plate sliding guide setting in the outer wall of adjusting pipe, the design of guide groove ensures the accurate cooperation of connecting block and sliding plate, avoids the inclination or stagnation of sliding rod in adjusting pipe, keeps the high -efficient stable operation of device.

[0014] The utility model further sets up, the connecting place of adjusting pipe and filter cavity is equipped with guide frame, and sliding rod slides through guide frame, and guide frame helps sliding rod to keep correct position, avoids excessive wear and tear and misoperation.

[0015] (Three) beneficial effect

[0016] Compared with the prior art, the utility model provides a kind of piezoelectric injection valve feed filtering device, with following beneficial effects:

[0017] The utility model sets up filter installation mechanism, filter screen can effectively filter the impurity in feed fluid, prevent particulate matter from entering injection valve or other critical components, to avoid the blockage and damage of equipment, filter screen is flexibly arranged, adjusting plate can be away from or close to threaded ring, so that filter screen can be adjusted as required, convenient cleaning or replacement, this design makes that filtering system has good adaptability and maintainability, by the cooperation of threaded ring and filter cavity, the disassembly and cleaning of filter screen become more convenient, reduce the time and cost of equipment maintenance.

[0018] The utility model sets up flow regulating mechanism, the degree that sliding rod in adjusting pipe can adjust adjusting plate close to or away from threaded ring, to accurately control feed flow, this ensures that the injection pressure of injection valve system is stable, avoids the influence of flow fluctuation on equipment performance, the setting of adjusting spring makes sliding plate can automatically fine tune in flow regulating process, guarantees that system can be self-adapting adjustment under different working conditions, maintains injection precision and stability, by the design of directional plate and sliding plate, flow regulating mechanism can adapt to different flow demand, provides flexible operation option, improves the multifunctionality and applicability of equipment.

[0019] The utility model sets up spring adjusting mechanism, the function of spring adjusting mechanism is adjusted pressure through threaded pipe, and thrust bearing and directional ring jointly act, can balance the pressure fluctuation in system, ensure the stable flow of fluid in whole device, the linkage design of connecting block and directional ring makes that spring adjusting mechanism can accurately adjust the movement of sliding plate, ensure the accurate control of flow and pressure, spring adjusting mechanism reduces the impact force between mechanical parts by balance and adjustment force, reduces component wear and tear and failure risk, to prolong the service life of equipment. ACCURACY

[0020] Figure 1 It is the overall structural schematic view of the device in the utility model in non-use state;

[0021] Figure 2 It is the structural schematic view of the internal mechanism of the device in the utility model;

[0022] Figure 3 It is the structural schematic view of the inside of the filter installation mechanism in the utility model;

[0023] Figure 4 It is the structural schematic view of the flow regulating mechanism and spring regulating mechanism in the utility model;

[0024] Figure 5 It is the structural schematic view of the inside of the flow regulating mechanism and spring regulating mechanism in the utility model.

[0025] In the drawing: 1, adjusting plate; 2, filter screen; 3, threaded ring; 4, adjusting pipe; 5, sliding rod; 6, sliding plate; 7, adjusting spring; 8, directional plate; 9, threaded pipe; 10, thrust bearing; 11, directional ring; 12, connecting block; 13, bottom connecting pipe; 14, side connecting pipe; 15, mounting plate; 16, mounting bolt; 17, fixed block; 18, guide slot; 19, guide frame; 101, filter cavity. DETAILED DESCRIPTION

[0026] It should be noted that the embodiments and the features in the embodiments in the present application can be combined with each other without conflict. The present application will be described in detail below with reference to the drawings and in combination with embodiments.

[0027] It should be noted that, unless otherwise specified, all technical and scientific terms used in the present application have the same meaning as that generally understood by the ordinary skilled person in the technical field to which the present application belongs.

[0028] In the present application, unless otherwise specified, the directions such as "up, down" are generally directed to the directions shown in the drawings, or are directed to the vertical, perpendicular or gravity directions; similarly, for the convenience of understanding and description, "left, right" are generally directed to the left and right shown in the drawings; "inner, outer" refer to the inner and outer relative to the contour of each component itself, but the above direction words are not used to limit the present application.

[0029] Please refer to Figures 1-5The utility model provides a piezoelectric injection valve feed filtering device, including filter installation mechanism, flow regulation mechanism and spring regulation mechanism, filter installation mechanism includes filter cavity 101, adjusting plate 1, filter screen 2 and screw ring 3, one end of filter screen 2 is connected with the end face cooperation of adjusting plate 1, the other end of filter screen 2 is connected with one end of screw ring 3, and screw ring 3 is threadedly connected in one end of filter cavity 101, and filter screen 2 is flexibly arranged, adjusting plate 1 can be away from and close to screw ring 3, flow regulation mechanism includes adjusting pipe 4, sliding rod 5, sliding plate 6, adjusting spring 7 and directional plate 8, adjusting pipe 4 is installed at the top end of filter cavity 101, sliding rod 5 is slidably arranged in adjusting pipe 4, the directional plate 8 on sliding rod 5 is installed on the inner wall of adjusting pipe 4, adjusting plate 1 is installed at one end of sliding rod 5, sliding plate 6 is slidably guided and arranged on the inner wall of adjusting pipe 4, adjusting spring 7 is installed between sliding plate 6 and directional plate 8, spring pulls sliding plate 6, and sliding rod 5 is slid, and adjusting plate 1 is away from and close to screw ring 3.

[0030] In the embodiment, filter installation mechanism mainly realizes the filtering function of feed, after material enters the device through filter cavity 101, first contact with filter screen 2, filter out the impurities or large particles in it, ensure that the material entering piezoelectric injection valve is pure, avoid the subsequent equipment to cause the blockage or wear, and the material after filtering flows out through the side connection pipe 14 of side part and enters subsequent external equipment, and flow regulation mechanism passes through the regulation of the flow rate of material in filter cavity 101, to ensure the filtering efficiency and the stability of material flow, adjusting plate 1 is fixed at one end of sliding rod 5, and adjusting plate 1 is connected with sliding plate 6 by adjusting spring 7, adjusting spring 7 is compressed or stretched under the pulling or pushing of sliding rod 5, to adjust the position of adjusting plate 1, when adjusting plate 1 is away from screw ring 3, the effective filtering area of filter screen 2 increases, allows more material to pass through, on the contrary, when adjusting plate 1 is close to screw ring 3, the filtering area decreases.

[0031] Spring regulation mechanism includes threaded pipe 9, thrust bearing 10, directional ring 11 and connecting block 12, threaded pipe 9 is threadedly connected on the outer wall of adjusting pipe 4, thrust bearing 10 is installed at the top end of threaded pipe 9, directional ring 11 is slidably arranged on the outer wall of adjusting pipe 4, the top end of thrust bearing 10 is in contact with the bottom of directional ring 11, and connecting block 12 is slidably arranged on the side wall of adjusting pipe 4, and connecting block 12 is slidably arranged in linkage with directional ring 11 and sliding plate 6.

[0032] In this embodiment, the spring adjusting mechanism is mainly used to adjust the tension or stiffness of the spring in the flow rate adjusting mechanism to adapt to different materials or flow rate requirements. By rotating the threaded tube 9, the directional ring 11 is pushed to slide by the thrust bearing, the connecting block 12 slides in the side wall of the adjusting tube 4, passes through the guide groove 18 on the outer wall of the adjusting tube 4, and is connected with the sliding plate 6 to make the sliding plate 6 slide with the directional ring 11. By rotating the threaded tube 9 or adjusting the bolt, the pre-tightening force of the adjusting spring 7 is changed, thereby adjusting the stiffness coefficient of the adjusting spring 7 and further accurately controlling the position of the sliding rod 5 and the flow rate adjusting range.

[0033] Please refer to Figures 1-5 , as a piezoelectric injection valve feed filter device supplementing the embodiment of the filter installation mechanism, the flow rate adjusting mechanism and the spring adjusting mechanism: the bottom of the filter cavity 101 is provided with a bottom connecting pipe 13, which is connected with external equipment, and the bottom connecting pipe 13 is connected with the threaded ring 3 in communication. The side of the filter cavity 101 is provided with a side connecting pipe 14, which is connected with external equipment. The adjusting tube 4 and one end of the filter cavity 101 are provided with a mounting plate 15, and the mounting plate 15 is provided with a mounting bolt 16. The mounting bolt 16 passes through the mounting plate 15 to fixedly connect the filter cavity 101 and the adjusting tube 4. One end of the sliding rod 5 is provided with a fixed block 17, and external bolts can pass through the fixed block 17 to fix the sliding rod 5 in the threaded tube 9. The outer wall of the adjusting tube 4 is provided with a guide groove 18, and the connecting block 12 passes through the guide groove 18 to connect with the sliding plate 6, so that the directional ring 11 and the sliding plate 6 are slidingly guided in the inner and outer walls of the adjusting tube 4. The connecting part of the adjusting tube 4 and the filter cavity 101 is fixedly provided with a guide frame 19, and the sliding rod 5 slides through the directional plate 8.

[0034] More specifically, the material enters the device from the inlet of the filter cavity 101 and contacts the filter screen 2. The filter screen 2 filters the material and intercepts impurities or large particles to ensure that the material passing through the filter cavity 101 is pure. The sliding rod 5 is adjusted by the adjusting plate 1 under the action of the adjusting spring 7 to adjust the effective filtering area of the filter screen 2, thereby controlling the flow rate of the material passing through. By adjusting the position of the sliding rod 5 and the adjusting plate 1, the flow rate can be accurately controlled to ensure the stability of the material flow and meet the requirements of different equipment for feeding. The tension or stiffness of the adjusting spring 7 is adjusted by the spring adjusting mechanism, which indirectly affects the movement range of the sliding rod 5 and the position of the adjusting plate 1. By rotating the threaded tube 9, the positions of the thrust bearing 10, the directional ring 11 and the sliding plate 6 are changed to link and adjust the stiffness coefficient of the adjusting spring 7 to meet different flow rate adjusting requirements. The filtered material flows out through the side connecting pipe 14 and enters the external equipment for subsequent processing.

[0035] In summary, the overall device is in use or operation: when the filter installation mechanism needs to be operated, the filter installation mechanism mainly realizes the filtering function of the feed material, the material enters the device through the filter cavity 101, first contacts the filter screen 2, filters out impurities or large particles, ensures that the material entering the piezoelectric injection valve is pure, avoids blocking or wear of the subsequent equipment, and the filtered material flows out through the side connection pipe 14 on the side, and enters the subsequent external equipment.

[0036] When the flow regulating mechanism needs to be operated, the flow regulating mechanism adjusts the flow rate of the material in the filter cavity 101 to ensure the filtering efficiency and the stability of the material flow. The adjusting plate 1 is fixed to one end of the sliding rod 5 and is connected to the sliding plate 6 through the adjusting spring 7. The adjusting spring 7 is compressed or stretched under the pull or push of the sliding rod 5, thereby adjusting the position of the adjusting plate 1. When the adjusting plate 1 is away from the threaded ring 3, the effective filtering area of the filter screen 2 increases, allowing more material to pass through. Conversely, when the adjusting plate 1 is close to the threaded ring 3, the filtering area decreases.

[0037] When the spring adjusting mechanism needs to be operated, the spring adjusting mechanism is mainly used to adjust the tension or stiffness of the spring in the flow rate adjusting mechanism to adapt to different materials or flow requirements. Rotating the threaded pipe 9, the directional ring 11 is pushed to slide by the thrust bearing, the connecting block 12 slides in the side wall of the adjusting pipe 4, passes through the guide groove 18 on the outer wall of the adjusting pipe 4, and cooperates with the sliding plate 6 to make the sliding plate 6 slide with the directional ring 11. By rotating the threaded pipe 9 or adjusting the bolt, the pre-tightening force of the adjusting spring 7 is changed, thereby adjusting the stiffness coefficient of the adjusting spring 7 and further accurately controlling the position of the sliding rod 5 and the flow regulating range.

[0038] The material enters the device from the inlet of the filter cavity 101 and contacts the filter screen 2. The filter screen 2 filters the material and intercepts impurities or large particles to ensure that the material passing through the filter cavity 101 is pure. The sliding rod 5 adjusts the effective filtering area of the filter screen 2 through the adjusting plate 1 under the action of the adjusting spring 7, thereby controlling the flow rate of the material passing through. By adjusting the position of the sliding rod 5 and the adjusting plate 1, the flow rate can be accurately controlled to ensure the stability of the material flow and meet the feeding requirements of different equipment. The spring adjusting mechanism adjusts the tension or stiffness of the adjusting spring 7, which indirectly affects the movement range of the sliding rod 5 and the position of the adjusting plate 1. Rotating the threaded pipe 9 changes the positions of the thrust bearing 10, the directional ring 11, and the sliding plate 6, which link to adjust the stiffness coefficient of the adjusting spring 7 to meet different flow rate adjusting requirements. The filtered material flows out through the side connection pipe 14 and enters the external equipment for subsequent processing.

[0039] In all the above-mentioned solutions, the connection between the two components can be selected according to the actual situation, such as welding, bolt and nut connection, bolt or screw connection or other known connection mode, which will not be described here. In the above, whenever there is a fixed connection, welding is preferred. Although the embodiments of the utility model have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A piezoelectric jet valve feed filter device comprising a filter mounting mechanism, a flow regulating mechanism and a spring regulating mechanism, characterized in that: The filter mounting mechanism comprises a filter cavity (101), an adjusting plate (1), a filter screen (2) and a threaded ring (3), one end of the filter screen (2) is connected with one end surface of the adjusting plate (1), the other end of the filter screen (2) is connected with one end of the threaded ring (3), the threaded ring (3) is threadedly connected with one end of the filter cavity (101), the filter screen (2) is flexibly arranged, the adjusting plate (1) can be away from and close to the threaded ring (3), the flow adjusting mechanism comprises an adjusting pipe (4), a sliding rod (5), a sliding plate (6), an adjusting spring (7) and a directional plate (8), the adjusting pipe (4) is arranged on the top end of the filter cavity (101), the sliding rod (5) is slidingly arranged in the adjusting pipe (4), the directional plate (8) on the sliding rod (5) is arranged on the inner wall of the adjusting pipe (4), the adjusting plate (1) is arranged on one end of the sliding rod (5), the sliding plate (6) is slidingly arranged on the inner wall of the adjusting pipe (4), the adjusting spring (7) is arranged between the sliding plate (6) and the directional plate (8), the spring pulls the sliding plate (6), so that the sliding rod (5) slides, and the adjusting plate (1) is away from and close to the threaded ring (3).

2. A piezoelectric jet valve feed filter apparatus according to claim 1, characterised in that: The spring adjusting mechanism comprises a threaded pipe (9), a thrust bearing (10), a directional ring (11) and a connecting block (12), the threaded pipe (9) is threadedly connected with the outer wall of the adjusting pipe (4), the thrust bearing (10) is arranged on the top end of the threaded pipe (9), the directional ring (11) is slidingly arranged on the outer wall of the adjusting pipe (4), the top end of the thrust bearing (10) is in contact with the bottom of the directional ring (11), and the connecting block (12) is slidingly arranged on the side wall of the adjusting pipe (4), and the connecting block (12) is connected with the directional ring (11) and the sliding plate (6) in linkage.

3. A piezoelectric jet valve feed filter apparatus according to claim 1, wherein: The bottom of the filter cavity (101) is provided with a bottom connecting pipe (13), the bottom connecting pipe (13) is connected with external equipment, and the bottom connecting pipe (13) is in communication with the threaded ring (3).

4. A piezoelectric jet valve feed filter apparatus according to claim 1, characterized by: The side of the filter cavity (101) is provided with a side connecting pipe (14), and the side connecting pipe (14) is connected with external equipment.

5. A piezoelectric jet valve feed filter apparatus according to claim 1, characterized by: The adjusting pipe (4) and one end of the filter cavity are provided with a mounting plate (15), and the mounting plate (15) is provided with a mounting bolt (16), the mounting bolt (16) penetrates the mounting plate (15) and fixedly connects the filter cavity (101) and the adjusting pipe (4).

6. A piezoelectric jet valve feed filter apparatus according to claim 1, characterized by: One end of the sliding rod (5) is provided with a fixing block (17), and an external bolt can pass through the fixing block (17) to fix the sliding rod (5) in the threaded pipe (9).

7. A piezoelectric jet valve feed filter apparatus according to claim 2, wherein: The outer wall of the adjusting pipe (4) is provided with a guide groove (18), and the connecting block (12) is connected with the sliding plate (6) through the guide groove (18), so that the directional ring (11) and the sliding plate (6) are slidingly arranged on the inner and outer walls of the adjusting pipe (4).

8. A piezoelectric jet valve feed filter apparatus according to claim 1, characterized by: The connecting part of the adjusting pipe (4) and the filter cavity (101) is fixedly provided with a guide frame (19), and the sliding rod (5) slides through the guide frame (19).

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