Automatic filtering adjustable differential pressure flow switch

Abstract

The utility model provides an automatic filtering adjustable differential pressure flow switch, which relates to the technical field of differential pressure flow switches and comprises a differential pressure flow switch body, a connecting pipe is mounted on one side of the differential pressure flow switch body, threads are arranged on the surface of the connecting pipe, a placing groove is arranged at one end of the connecting pipe, and the connecting pipe is connected with the placing groove. A mounting frame is arranged in the placement groove, a filter screen is mounted in the mounting frame, an internal thread sleeve is mounted on the surface of the connecting pipe, the internal thread sleeve and the connecting pipe form threaded connection, an input end connector is mounted on one side of the internal thread sleeve, and an output end connector is mounted on the other side of the internal thread sleeve. According to the differential pressure flow switch, impurities carried in a medium can be intercepted through the filter screen, then the impurities can be effectively prevented from entering the differential pressure flow switch body, the problem that the differential pressure flow switch is prone to being blocked is solved, normal use of the differential pressure flow switch is facilitated, meanwhile, the filter screen can be rapidly detached, and the filter screen is convenient to use. And the surface of the filter screen is convenient to clean.

Description

Technical Field

[0001] This utility model belongs to the field of differential pressure flow switch technology, and more specifically, it relates to an automatic filtering adjustable differential pressure flow switch. Background Technology

[0002] A differential pressure flow switch is a device that detects flow rate based on the differential pressure signal generated when fluid passes through a pipeline. It determines whether the fluid is in normal operating condition by detecting the differential pressure signal in the pipeline, and performs alarm or control operations according to preset values. It is widely used in the field of fluid control.

[0003] Based on the above, the inventors have discovered the following problems: most current differential pressure flow switches do not have a filter structure, and the medium transported in the pipeline may contain impurities. If these impurities enter the differential pressure flow switch, they can easily cause blockage of the device, thereby affecting its normal operation.

[0004] Therefore, in view of this, we have studied and improved the existing structure and its shortcomings, and provided an automatic filtering adjustable differential pressure flow switch in order to achieve a more practical purpose. Utility Model Content

[0005] The purpose and function of this utility model of an automatic filtering adjustable differential pressure flow switch are achieved by the following specific technical means:

[0006] An automatic filtering adjustable differential pressure flow switch includes a differential pressure flow switch body, a connecting pipe installed on one side of the differential pressure flow switch body, the surface of the connecting pipe being threaded, a placement groove being opened at one end of the connecting pipe, an installation frame being provided inside the placement groove, a filter screen being installed inside the installation frame, an internally threaded sleeve being installed on the surface of the connecting pipe, the internally threaded sleeve and the connecting pipe forming a threaded connection, an input end connector being installed on one side of the internally threaded sleeve, and an output end connector being installed on the other side of the differential pressure flow switch.

[0007] Furthermore, a sealing ring is installed on one side of the connecting pipe.

[0008] Furthermore, the dimensions of the mounting frame match the dimensions of the placement slot.

[0009] Furthermore, the mounting frame has a set of chambers inside, a spring is installed on one side of the chamber, a limit plate is installed on one end of the spring, an arc-shaped locking block is installed on one side of the limit plate, and one end of the arc-shaped locking block extends through the mounting frame to the outside.

[0010] Furthermore, a set of mounting holes are provided on both sides of the placement groove, and the mounting holes are matched with the arc-shaped card block.

[0011] Furthermore, a set of pull rods is installed on one side of the mounting frame.

[0012] Furthermore, the surface of the placement groove is provided with a sealing gasket.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1. Through the design of the filter screen, impurities carried in the medium will be intercepted by the filter screen during use, which can effectively prevent impurities from entering the differential pressure flow switch body, avoid the problem of easy clogging of the device, and facilitate the normal use of the device.

[0015] 2. Through the combined use of springs, arc-shaped locking blocks, and mounting holes, when the surface of the filter screen needs to be cleaned, the operator can unscrew the internal threaded sleeve to remove the input connector, and then pull the mounting frame outwards using the pull rod. The arc-shaped locking block is squeezed by the side wall of the connecting pipe and moves into the inner chamber, causing it to disengage from the mounting hole. At this point, the filter screen is removed, allowing the operator to clean it. After cleaning, the mounting frame is inserted into the placement slot. The arc-shaped locking block is squeezed by the side wall of the connecting pipe and moves into the inner chamber, while the spring is compressed. When the arc-shaped locking block moves to the corresponding position in the mounting hole, the spring rebounds and pushes the arc-shaped locking block into the mounting hole, thus fixing the filter screen and preventing the accumulation of a large amount of impurities on the filter screen surface, which would hinder the passage of the medium. Attached Figure Description

[0016] Figure 1 This is a three-dimensional schematic diagram of an automatic filtering adjustable differential pressure flow switch according to the present invention.

[0017] Figure 2 This is a partial structural diagram of an automatic filtering adjustable differential pressure flow switch according to this utility model.

[0018] Figure 3 This is a three-dimensional schematic diagram of an internal threaded sleeve for an automatic filtering adjustable differential pressure flow switch according to this utility model.

[0019] Figure 4 This is a partial structural plan view of an automatic filtering adjustable differential pressure flow switch according to this utility model.

[0020] Figure 5 This utility model relates to an automatic filtering adjustable differential pressure flow switch. Figure 4 A magnified diagram of point A in the diagram.

[0021] In the diagram, the correspondence between component names and drawing numbers is as follows:

[0022] 1. Differential pressure flow switch body; 2. Internal threaded sleeve; 3. Input connector; 4. Output connector; 5. Connecting pipe; 6. Placement slot; 7. Mounting hole; 8. Sealing gasket; 9. Mounting frame; 10. Filter screen; 11. Arc-shaped locking block; 12. Pull rod; 13. Sealing ring; 14. Chamber; 15. Spring; 16. Limiting plate. Detailed Implementation

[0023] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model.

[0024] Example:

[0025] As attached Figure 1 To be continued Figure 5 As shown:

[0026] This utility model provides an automatic filtering adjustable differential pressure flow switch, including a differential pressure flow switch body 1. A connecting pipe 5 is installed on one side of the differential pressure flow switch body 1. The surface of the connecting pipe 5 is threaded. A placement groove 6 is opened at one end of the connecting pipe 5. An installation frame 9 is provided inside the placement groove 6. A filter screen 10 is installed inside the installation frame 9. An internally threaded sleeve 2 is installed on the surface of the connecting pipe 5. The internally threaded sleeve 2 and the connecting pipe 5 form a threaded connection. An input end connector 3 is installed on one side of the internally threaded sleeve 2. An output end connector 4 is installed on the other side of the differential pressure flow switch. Through the design of the filter screen 10, impurities entrained in the medium will be intercepted by the filter screen 10 during use, thereby effectively preventing impurities from entering the interior of the differential pressure flow switch body 1, avoiding the problem of easy clogging of the device, and facilitating the normal use of the device.

[0027] A sealing ring 13 is installed on one side of the connecting pipe 5. The use of the sealing ring 13 improves the sealing between the internal threaded sleeve 2 and the connecting pipe 5, thereby preventing the medium from leaking from the gap and facilitating use.

[0028] The dimensions of the mounting frame 9 are matched with the dimensions of the placement slot 6.

[0029] The mounting frame 9 has a set of chambers 14 inside. A spring 15 is installed on one side of each chamber 14. A limiting plate 16 is installed on one end of the spring 15. An arc-shaped locking block 11 is installed on one side of the limiting plate 16. One end of the arc-shaped locking block 11 extends through the mounting frame 9 to the outside. Through the cooperation of the spring 15, the arc-shaped locking block 11 and the mounting hole 7, when it is necessary to clean the surface of the filter screen 10, the operator can unscrew the internal threaded sleeve 2 to remove the input connector 3, and then pull the mounting frame 9 outward by the pull rod 12. The arc-shaped locking block 11 is squeezed by the side wall of the connecting pipe 5. The pressure moves inward toward the chamber 14, causing the arc-shaped locking block 11 to disengage from the mounting hole 7. At this point, the filter screen 10 is removed, allowing the staff to clean it. After cleaning, the mounting frame 9 is inserted into the placement slot 6. The arc-shaped locking block 11 moves inward toward the chamber 14 under the squeezing force of the side wall of the connecting pipe 5, while the spring 15 is squeezed. When the arc-shaped locking block 11 moves to the corresponding position in the mounting hole 7, the spring 15 rebounds and pushes the arc-shaped locking block 11 into the mounting hole 7, thus fixing the filter screen 10. This prevents a large amount of impurities from accumulating on the surface of the filter screen 10, which would make it difficult for the medium to pass through.

[0030] The placement groove 6 has a set of mounting holes 7 on both sides, which are matched with the arc-shaped card block 11.

[0031] A set of pull rods 12 is installed on one side of the mounting frame 9.

[0032] The surface of the placement groove 6 is provided with a sealing gasket 8. The use of the sealing gasket 8 can enhance the sealing between the mounting frame 9 and the connecting pipe 5, making it easier to use.

[0033] The specific usage and function of this embodiment are as follows:

[0034] First, check the integrity of the device. Only after confirming it is intact can it be used. During use, impurities entrained in the medium will be intercepted by the filter screen 10, effectively preventing impurities from entering the differential pressure flow switch body 1, avoiding the problem of easy clogging, and facilitating normal operation. When cleaning the surface of the filter screen 10 is required, the operator can unscrew the internal threaded sleeve 2 to remove the input connector 3, and then pull the mounting frame 9 outwards using the pull rod 12. The arc-shaped locking block 11, under the pressure of the side wall of the connecting pipe 5, moves inwards into the chamber 14, causing... The arc-shaped locking block 11 disengages from the mounting hole 7, at which point the filter screen 10 is removed, allowing the staff to clean it. After cleaning, the mounting frame 9 is inserted into the placement slot 6. The arc-shaped locking block 11 moves towards the inside of the chamber 14 under the squeezing force of the side wall of the connecting pipe 5, while the spring 15 is squeezed. When the arc-shaped locking block 11 moves to the corresponding position in the mounting hole 7, the spring 15 rebounds and pushes the arc-shaped locking block 11 into the mounting hole 7, thus fixing the filter screen 10 and preventing the accumulation of a large amount of impurities on the surface of the filter screen 10, which would make it difficult for the medium to pass through.

[0035] The embodiments of this utility model are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the utility model to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described in order to better illustrate the principles and practical applications of this utility model, and to enable those skilled in the art to understand this utility model and design various embodiments with various modifications suitable for a particular purpose.

Claims

1. An automatic filtering adjustable differential pressure flow switch, comprising a differential pressure flow switch body (1), characterized in that: A connecting pipe (5) is installed on one side of the differential pressure flow switch body (1). The surface of the connecting pipe (5) is threaded. A placement groove (6) is opened at one end of the connecting pipe (5). An installation frame (9) is provided inside the placement groove (6). A filter screen (10) is installed inside the installation frame (9). An internal threaded sleeve (2) is installed on the surface of the connecting pipe (5). The internal threaded sleeve (2) and the connecting pipe (5) form a threaded connection. An input end connector (3) is installed on one side of the internal threaded sleeve (2). An output end connector (4) is installed on the other side of the differential pressure flow switch.

2. The automatic filtering adjustable differential pressure flow switch as described in claim 1, characterized in that: A sealing ring (13) is installed on one side of the connecting pipe (5).

3. The automatic filtering adjustable differential pressure flow switch as described in claim 1, characterized in that: The dimensions of the mounting frame (9) match the dimensions of the placement slot (6).

4. The automatic filtering adjustable differential pressure flow switch as described in claim 1, characterized in that: The mounting frame (9) has a set of chambers (14) inside. A spring (15) is installed on one side of the chamber (14). A limiting plate (16) is installed on one end of the spring (15). An arc-shaped locking block (11) is installed on one side of the limiting plate (16). One end of the arc-shaped locking block (11) extends through the mounting frame (9) to the outside.

5. The automatic filtering adjustable differential pressure flow switch as described in claim 4, characterized in that: A set of mounting holes (7) are provided on both sides of the placement groove (6), and the mounting holes (7) are matched with the arc-shaped card block (11).

6. The automatic filtering adjustable differential pressure flow switch as described in claim 1, characterized in that: A set of pull rods (12) is installed on one side of the mounting frame (9).

7. The automatic filtering adjustable differential pressure flow switch as described in claim 1, characterized in that: The surface of the placement groove (6) is provided with a sealing gasket (8).

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