Novel micro-pressure signal generator
By setting a locking cap and clamping device at the interface of the micro-pressure signal generator, the leakage problem caused by the tendency of deformation of the conduit when the pressure changes is solved, and the calibration accuracy and convenience of use are improved.
Patent Information
- Application Number
- CN202421018935.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-11
- Publication Date
- 2025-01-10
- Estimated Expiration
- 2034-05-11
AI Technical Summary
Existing micro-pressure signal generators are prone to leakage at the connection, resulting in a reduced calibration accuracy, especially because the conduit will deform when the pressure changes, resulting in air or liquid leakage.
A new micro-pressure signal generator was designed. By setting a locking cap and clamping part at the interface between the pressure-added and reduced pressure fine-tuning pump and the meter seat, the threaded structure and elastic guide clamping device are used to ensure that the conduit is on the plug tube. Tighten to prevent loosening and deformation and avoid leakage.
It effectively improves the verification accuracy, reduces the risk of leakage, and simplifies the disassembly and assembly process of the equipment.
Smart Images
Figure CN222336636U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of calibration technology, in particular to a novel micro-pressure signal generator. Background Art
[0002] The micro-pressure signal generator is a vacuum pressure signal generator that integrates vacuum and air pressure. It consists of a hand pump, a pressure regulator, and a positive and negative pressure conversion valve. It can provide a pressure source for calibrating pressure (differential pressure) transmitters, precision pressure gauges, ordinary pressure gauges, and other pressure instruments.
[0003] During the use of the micro-pressure signal generator, attention should be paid to leak prevention. Air leakage or liquid leakage will affect the calibration accuracy. The place where leakage occurs is much more likely to be the connection between the components. The existing micro-pressure signal generator mostly uses conduits for air pressure or hydraulic pressure transmission. Most conduits are made of plastic or metal. Due to pressure changes, simple plug-in connection will cause the connection of the conduit to be deformed under pressure, thereby causing leakage. Therefore, a reinforcement structure needs to be provided at the connection to prevent deformation, thereby ensuring its calibration accuracy. Utility Model Content
[0004] The utility model aims to provide a novel micro-pressure signal generator.
[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:
[0006] A novel micro-pressure signal generator comprises a base, a pressure-increasing and decompression fine-tuning pump, a catheter and a meter seat, wherein the bottom of the base is provided with four supporting legs, the pressure-increasing and decompression fine-tuning pump and the meter seat are respectively installed on the base, and the pressure-increasing and decompression fine-tuning pump and the meter seat are both provided with interfaces, each of which is provided with a locking cap for locking the catheter, each of which is provided with a locking seat and an insert tube, the locking seat is provided with a clamping part surrounding the outer periphery of the insert tube, a gap is left between the clamping part and the insert tube, the locking cap is provided with an opening communicating left and right, and a guide clamp is provided on the inner wall to prevent the catheter from loosening, the end of the insert tube first passes through the opening to cooperate with the guide clamp, and then is inserted and installed with the insert tube, the catheter passes through the gap along the insert tube into the clamping part, and then the locking cap cover is provided on the insert tube and is threadedly installed with the locking seat, pushing the clamping part to contract inward to clamp the catheter to the outer wall of the insert tube.
[0007] Furthermore, the lock seat is provided with a threaded structure on its outer wall and the locking cap is provided with a threaded structure on its inner wall.
[0008] Furthermore, the clamping part is composed of a plurality of plates surrounded by a conical structure, the plate is provided with at least one protrusion on its inner wall, the plug-in tube is provided with an annular recess at the protrusion, and the locking cap is installed on the lock seat and then presses the plate inwardly, so that the protrusion presses the catheter into the annular recess.
[0009] Furthermore, the plate body and the raised portion are both arc-shaped structures.
[0010] Furthermore, the locking cap is provided with a conical head, through which the plates of the clamping part are pressed down.
[0011] Furthermore, the guide clamp is arranged on the inner wall of the conical head, and the guide clamp is composed of an elastic plate and a guide plate. One end of the elastic plate is arranged on the inner wall of the conical head, and the other end is connected to the guide plate. The guide plate is an arc structure adapted to the outer wall of the catheter.
[0012] After adopting the above technical solution, the utility model has the following advantages compared with the background technology:
[0013] The utility model provides a locking cap for installing the catheter at the interface between the pressure increase and pressure decrease fine-tuning pump and each meter seat, and the locking cap is installed on the locking seat through a thread, and the catheter is pressed on the plug-in pipe, so that the catheter is not easy to loosen, and at the same time, the change of the catheter is limited during pressure increase and pressure decrease, so that the catheter is not easy to leak, thereby improving the calibration accuracy, and the utility model is simple to disassemble and assemble, and is convenient for use. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;
[0015] Figure 2 This is a schematic diagram of the utility model from another angle;
[0016] Figure 3 This is a schematic diagram of the interface and locking cap of the utility model;
[0017] Figure 4 This is a cross-sectional view of the interface and locking cap of the utility model.
[0018] Description of reference numerals:
[0019] Base 1; pressure increase and decrease fine-tuning pump 2; catheter 3; meter seat 4; interface 5; locking cap 6; support foot 11; locking seat 51; plug-in tube 52; clamping portion 53; annular recess 521; plate body 531; raised portion 532; guide clamp 61; conical head 62; elastic plate 611; guide plate 612. DETAILED DESCRIPTION
[0020] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.
[0021] It should be noted that in the present invention, the terms "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element of the present invention must have a specific orientation, and therefore cannot be understood as a limitation on the present invention. Example
[0022] Cooperate Figures 1 to 4 As shown, the utility model discloses a novel micro-pressure signal generator, including a base 1, a pressure-increasing and decompression fine-tuning pump 2, a catheter 3 and a meter seat 4. The bottom of the base 1 is provided with four supporting legs 11 for support. The pressure-increasing and decompression fine-tuning pump 2 and the meter seat 4 are respectively installed on the base 1. The pressure-increasing and decompression fine-tuning pump 2 is installed on the base through a mounting seat, and the meter seat 4 is installed on the base 1 through a column. The pressure-increasing and decompression fine-tuning pump 2 and the meter seat 4 are both provided with an interface 5, each of the interfaces 5 is provided with a locking cap 6 for locking the catheter 3, each of the interfaces 5 is provided with a locking seat 51 and an inserting tube 52, and the locking seat 51 is provided with a surrounding The clamping portion 53 on the outer periphery of the plug-in tube 52 has a gap between the clamping portion 53 and the plug-in tube 52. The locking cap 6 has an opening communicating with the left and right sides, and a guide clamp 61 is provided on the inner wall to prevent the catheter from loosening. The end of the plug-in tube 52 first passes through the opening and cooperates with the guide clamp 61, and then is plugged and installed with the plug-in tube 52. The catheter 3 passes through the gap along the plug-in tube 52 and enters the clamping portion 53. Then the locking cap 6 is covered on the plug-in tube 52 and threadedly installed with the lock seat 51, pushing the clamping portion 53 to shrink inward, narrowing the gap, and clamping the catheter 3 to the outer wall of the plug-in tube 52.
[0023] The conduit 3 of this embodiment is a hose, preferably made of plastic or other plastic material.
[0024] The lock base 51 , the inserting tube 52 and the locking cap 6 of the present embodiment are preferably made of plastic material, but may also be made of metal material, which is not limited in the present embodiment.
[0025] The lock base 51 is provided with a thread structure on its outer wall and the locking cap 6 is provided with a thread structure on its inner wall.
[0026] The clamping portion 53 is composed of a plurality of plates 531 and has a conical structure. The plate 531 is provided with at least one protrusion 532 on its inner wall. The insert tube 52 is provided with an annular recess 521 at the protrusion. After the locking cap 6 is installed on the lock seat 51, the plate 531 is pressed inwardly, and the protrusion 532 presses the catheter 3 into the annular recess 521.
[0027] The plate body 531 and the protrusion 532 are both arc-shaped structures.
[0028] The locking cap 6 is provided with a conical head 62 , and the plates 531 of the clamping portion 53 are pressed down by the conical head 62 .
[0029] The guide clamp 61 is arranged on the inner wall of the conical head 62. The guide clamp 61 is composed of an elastic plate 611 and a guide plate 612. One end of the elastic plate 611 is arranged on the inner wall of the conical head 62, and the other end is connected to the guide plate 612. The guide plate 612 is an arc structure adapted to the outer wall of the catheter 3.
[0030] In this embodiment, at least two, preferably three, guide clamps 61 are provided and arranged around the outside of the catheter 3 .
[0031] In this embodiment, a locking cap 6 for installing the conduit 3 is provided at the interface 5 between the pressure increase / decrease fine-tuning pump 2 and each gauge seat 4. The locking cap 6 is installed on the locking seat 51 through threads, and the conduit 3 is pressed against the plug-in tube 52, so that the conduit 3 is not easy to loosen. At the same time, when the pressure is increased or decreased, its change is limited, so that it is not easy to leak, thereby improving the calibration accuracy. At the same time, it is simple to disassemble and assemble, and is easy to use.
[0032] The above is only a preferred specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the utility model should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.
Claims
1. A new type of micro-pressure signal generator, characterized in that: It includes a base, a pressure-increasing and decompression fine-tuning pump, a catheter and a meter seat. The bottom of the base is provided with 4 supporting legs. The pressure-increasing and decompression fine-tuning pump and the meter seat are respectively installed on the base. The pressure-increasing and decompression fine-tuning pump and the meter seat are both provided with interfaces. Each of the interfaces is provided with a locking cap for locking the catheter. Each of the interfaces is provided with a locking seat and an insert tube. The locking seat is provided with a clamping part surrounding the outer periphery of the insert tube. A gap is left between the clamping part and the insert tube. The locking cap is provided with an opening communicating left and right, and a guide clamp is provided on the inner wall to prevent the catheter from loosening. The end of the insert tube first passes through the opening to cooperate with the guide clamp, and then is inserted and installed with the insert tube. The catheter passes through the gap along the insert tube and enters the clamping part. Then the locking cap cover is provided on the insert tube and is threadedly installed with the locking seat to push the clamping part to contract inward to clamp the catheter to the outer wall of the insert tube.
2. A novel micro-pressure signal generator as claimed in claim 1, characterized in that: The lock seat is provided with a thread structure on its outer wall and the locking cap is provided with a thread structure on its inner wall.
3. A novel micro-pressure signal generator as claimed in claim 2, characterized in that: The clamping part is composed of a plurality of plates surrounded by a conical structure. The plate is provided with at least one protrusion on its inner wall, and the insert tube is provided with an annular recess at the protrusion. After the locking cap is installed on the lock seat, the plate is pressed inwardly, and the protrusion presses the catheter into the annular recess.
4. A novel micro-pressure signal generator as claimed in claim 3, characterized in that: The plate body and the raised portion are both arc-shaped structures.
5. A novel micro-pressure signal generator as claimed in claim 3, characterized in that: The locking cap is provided with a conical head, through which the plates of the clamping part are pressed down.
6. A novel micro-pressure signal generator as claimed in claim 5, characterized in that: The guide clamp is arranged on the inner wall of the conical head, and the guide clamp is composed of an elastic plate and a guide plate. One end of the elastic plate is arranged on the inner wall of the conical head, and the other end is connected to the guide plate. The guide plate is an arc structure adapted to the outer wall of the catheter.