Pressure controller
By designing the structure of the valve seat, valve seat connector, and proportional valve, and combining it with a metal diaphragm pressure sensor and flow guide sleeve, the overload capacity and stability issues of existing proportional valves have been solved, achieving oil-free, safe, explosion-proof, and pressure monitoring and control, thus improving the safety and reliability of the equipment.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- WUXI SIRUI ELECTRONICS EQUIP TECH CO LTD
- Filing Date
- 2025-07-10
- Publication Date
- 2026-05-19
AI Technical Summary
Existing proportional valves have poor overload capacity and long-term stability of diffused silicon cores, pose a risk of oil leakage, and are not explosion-proof.
By employing a specific structural design of valve seat, valve seat connector and proportional valve, and using a metal diaphragm pressure sensor fixed in the receiving hole, combined with the deformation state of the flow guide sleeve and strain gauge to control gas flow, it achieves oil-free safety and explosion protection, and can monitor upstream and downstream pressure.
It reduces installation size, prevents oil leakage, improves safety and explosion-proof performance, and can monitor and control pressure anomalies, providing early warning.
Smart Images
Figure CN224261041U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of flow controller technology, and relates to a valve body, specifically a pressure controller. Background Technology
[0002] A proportional valve is a valve assembly that converts an input electrical signal into force or displacement proportionally, thereby continuously controlling parameters such as pressure and flow rate.
[0003] Chinese utility model patent application number 201921894282.9 discloses a gas proportional valve assembly, wherein the proportional valve assembly includes a proportional valve body, a valve port insert, and a valve core. The proportional valve body has an over-gas chamber, and the surface of the proportional valve body has an inlet port connected to the over-gas chamber. The valve port insert is independent of the proportional valve body and is disposed inside the proportional valve body to form an outlet valve port connected to the over-gas chamber. The valve core is disposed on the proportional valve body and has a one-way diaphragm for controlling the opening degree of the outlet valve port. This proportional valve is typically used in conjunction with a pressure sensor (diffused silicon core); however, diffused silicon cores have poor overload capacity and long-term stability, and typically require filling with silicone oil or fluorinated oil, posing a risk of oil leakage, and are not explosion-proof. Summary of the Invention
[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a pressure controller.
[0005] To achieve the above objectives, the present invention adopts the following technical solution: a pressure controller, comprising:
[0006] The valve seat includes a valve seat body, an air inlet channel formed on one end face of the valve seat body, an air outlet channel formed on the other end face of the valve seat body, a first receiving hole formed on the valve seat body and connected to the air inlet channel, a second receiving hole formed on the valve seat body and connected to the air outlet channel, a metal diaphragm pressure sensor fixed in the first receiving hole and the second receiving hole, an air outlet formed on the valve seat body and connected to the air inlet channel, and an air inlet formed on the valve seat body and connected to the air outlet channel.
[0007] Two valve seat connectors are respectively installed on the two end faces of the valve seat body and respectively inserted into the air inlet channel and the air outlet channel;
[0008] A proportional valve, which is mounted on the valve seat and communicates with the air outlet and the air inlet, is used to connect the air outlet and the air inlet or to disconnect the air outlet and the air inlet.
[0009] Optimally, each valve seat connector includes a limiting retaining ring portion abutting against the end face of the valve seat body, a mounting portion formed on one end face of the limiting retaining ring portion and installed in the air inlet channel or the air outlet channel, an interface portion formed on the other end face of the limiting retaining ring portion, a first sealing ring sleeved on the mounting portion and sealing with the valve seat body, and a central channel opened at the center of the limiting retaining ring portion, the mounting portion and the interface portion.
[0010] Furthermore, the proportional valve includes a valve body mounted on the side of the valve seat, a valve housing mounted on the valve body and forming an accommodating space therewith, an iron core mounted inside the valve housing, an electromagnetic coil wound on the iron core, a flow guide sleeve mounted inside the valve body and corresponding to the air outlet and the air inlet, a strain gauge sandwiched between the valve body and the flow guide sleeve, a valve core disposed adjacent to the iron core and adjustablely mounted on one side of the strain gauge, a valve core adapter connected to the valve core and cooperating with the valve core to clamp the strain gauge, and a sealing element mounted on one end of the valve core adapter and cooperating with the flow guide sleeve.
[0011] Furthermore, the end of the flow guide sleeve has a through hole that communicates with the air inlet;
[0012] The strain gauge has two states: deformation and reset. When the strain gauge is in the deformed state, the valve core is attracted by the iron core and moves upward, and the seal is released from the through hole. When the strain gauge is in the reset state, the seal seals the through hole.
[0013] Furthermore, the flow guide sleeve includes a cylindrical body with a central receiving hole, an annular groove formed on the circumferential surface of the cylindrical body, a plurality of axial through holes formed on the cylindrical body and connecting the annular groove and the air outlet, and a plurality of radial through holes formed on the inner wall of the annular groove and connected to the receiving hole. The receiving hole is connected to the through holes, and the sealing element is located in the receiving hole.
[0014] Furthermore, the flow guide sleeve also includes multiple grooves formed on the end face of the cylindrical body, and each groove is provided with a second sealing ring that cooperates with the valve seat body.
[0015] The beneficial effects of this application are as follows: The pressure controller of this utility model, by using a valve seat, valve seat connector and proportional valve with a specific structure to cooperate, fixes the metal diaphragm pressure sensor in the first receiving hole and the second receiving hole, which can reduce the installation size, eliminate the use of oil, and ensure safety and explosion protection; moreover, there are pressure sensors upstream and downstream of the proportional valve, which can monitor the upstream and downstream pressure and switch the control mode, and can judge whether there is an abnormality such as outlet blockage of the pressure controller based on the pressure of the upstream and downstream pressure sensors, so as to provide early warning. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the pressure controller of this utility model;
[0017] Figure 2 for Figure 1 A sectional view;
[0018] Figure 3 for Figure 2 The front view;
[0019] Figure 4 This is a schematic diagram of the flow guide sleeve in the pressure controller of this utility model. Detailed Implementation
[0020] The present application will now be described in further detail with reference to the accompanying drawings and specific embodiments. Similar elements in different embodiments are referred to by related similar element reference numerals. In the following embodiments, many details are described to facilitate a better understanding of the present application. However, those skilled in the art will readily recognize that some features may be omitted in different situations, or may be replaced by other elements, materials, or methods. In some cases, certain operations related to the present application are not shown or described in the specification. This is to avoid obscuring the core parts of the present application with excessive description. For those skilled in the art, detailed description of these related operations is not necessary; they can fully understand the related operations based on the description in the specification and general technical knowledge in the art.
[0021] Furthermore, the features, operations, or characteristics described in the specification can be combined in any suitable manner to form various embodiments, and the operational steps involved in each embodiment can also be rearranged or adjusted in a manner that is obvious to those skilled in the art. Therefore, the specification and drawings are only for clearly describing a particular embodiment and do not imply that they represent the necessary components and / or order.
[0022] The serial numbers assigned to components in this document, such as "first" and "second," are used only to distinguish the described objects and have no sequential or technical meaning. The terms "connection" and "linkage" used in this application, unless otherwise specified, include both direct and indirect connections (linkages).
[0023] like Figures 1 to 3 The pressure controller shown mainly includes a matching valve seat 1, a valve seat connector 2, and a proportional valve 3.
[0024] The valve seat 1 includes a valve seat body 11, an air inlet channel 12 (extending inward from one end of the valve seat body 11) formed on one end face of the valve seat body 11, an air outlet channel 13 (extending inward from the other end of the valve seat body 11, such that the air outlet channel 13 and the air inlet channel 12 extend towards each other but are not connected) formed on the other end face of the valve seat body 11, a first receiving hole 16 formed on the valve seat body 11 (formed on the side of the valve seat body 11) and connected to the air inlet channel 12, and a first receiving hole 16 formed on the valve seat body 11 (formed on the side of the valve seat body 11). On the side of the valve seat body 11, there is a second receiving hole 17 that is connected to the air outlet channel 13, a metal diaphragm pressure sensor 18 fixed in the first receiving hole 16 and the second receiving hole 17 (the fixing method can be conventional, such as welding), an air outlet 14 (usually connected to the inner end of the air inlet channel 12) opened on the valve seat body 11, and an air inlet 15 (usually connected to the inner end of the air outlet channel 13) opened on the valve seat body 11 and connected to the air outlet channel 13.
[0025] There are two valve seat connectors 2, which are respectively installed on the two end faces of the valve seat body 11 and respectively inserted into the air inlet channel 12 and the air outlet channel 13 (the insertion method can be conventional, such as threaded connection or interference fit). In this embodiment, each valve seat connector 2 includes a limiting retaining ring portion 21 abutting against the end face of the valve seat body 11, a mounting portion 22 formed on one end face (inner end face) of the limiting retaining ring portion 21 and installed in the air inlet channel 12 or air outlet channel 13 (usually formed integrally, the same below; the connection between the mounting portion 22 and the air inlet channel 12 or air outlet channel 13 is as described above, such as threaded connection, interference fit, etc.), an interface portion 25 formed on the other end face (outer end face) of the limiting retaining ring portion 21, a first sealing ring 24 sleeved on the mounting portion 22 (also abutting against the end face of the limiting retaining ring portion 21) and sealing it with the valve seat body 11, and a central channel 23 opened at the center of the limiting retaining ring portion 21, the mounting portion 22, and the interface portion 25 (the central channel 23 is used for gas inlet or outlet). This facilitates the connection of the valve seat 1 with an external gas source.
[0026] The proportional valve 3 is mounted on the valve seat 1 and communicates with the outlet port 14 and the inlet port 15. It is used to connect or disconnect the outlet port 14 and the inlet port 15. That is, the proportional valve 3 has two states: open and closed. When it is in the open state, the outlet port 14 and the inlet port 15 are connected; when it is in the closed state, the outlet port 14 and the inlet port 15 are not connected.
[0027] In this embodiment, the proportional valve 3 includes a valve body 31 mounted on the side of the valve seat 1, a valve housing 32 mounted on the valve body 31 and forming an accommodating space therewith (the connection between the valve housing 32 and the valve body 31 can preferably be detachable, such as a threaded connection), an iron core 33 mounted inside the valve housing 32 (the iron core 33 extends along the axis of the valve housing 32), and an electromagnetic coil 34 wound on the iron core 33 (when the electromagnetic coil 34 is energized by a cable, the iron core 33 generates magnetic force; when the power is cut off...). When the iron core 33 is energized, the magnetic force generated by the iron core 33 disappears; a guide sleeve 36 is installed inside the valve body 31 and corresponds to the air outlet 14 and air inlet 15; a strain gauge 37 is sandwiched between the valve body 31 and the guide sleeve 36; a valve core 35 is disposed adjacent to the iron core 33 and adjustablely mounted on one side of the strain gauge 37 (when the aforementioned iron core 33 generates magnetic force, it can attract the valve core 35 to move upward); and a valve core adapter 38 is connected to the valve core 35 and cooperates with the valve core 35 to clamp the strain gauge 37. Figure 2 and Figure 3 As shown, part of the structure of the valve core adapter 38 is located below the strain gauge 37, with its middle part abutting the lower surface of the strain gauge 37. The other structures pass through the strain gauge 37 and connect to the valve core 35 (the connection method can be conventional, such as threaded connection). A sealing element 39 (partially embedded in the valve core adapter 38) is installed at one end (lower end) of the valve core adapter 38 and mates with the flow guide sleeve 36. Thus, when the aforementioned iron core 33 generates magnetic force, attracting the valve core 35 to move upward, it simultaneously drives the valve core adapter 38 to move upward, causing the sealing element 39 to disengage from the flow guide sleeve 36. When the magnetic force generated by the iron core 33 disappears, the strain gauge 37 resets, the valve core 35 moves downward, driving the valve core adapter 38 downward, and the sealing element 39 abuts against the flow guide sleeve 36.
[0028] In this embodiment, the end of the guide sleeve 36 has a through hole 365 that communicates with the air inlet 15; the strain gauge 37 has two states: deformation and reset. When the strain gauge 37 is in the deformed state, the valve core 35 is attracted by the iron core 33 and moves upward, the seal 39 releases the seal from the through hole 365, and the gas flow channel is formed. When the strain gauge 37 is in the reset state, the seal 39 seals the through hole 365, and the gas flow channel is disconnected.
[0029] Specifically, such as Figure 4As shown, the guide sleeve 36 includes a cylindrical body 361 with a central receiving hole 360 (the receiving hole 360 does not penetrate the cylindrical body 361, and at this time the receiving hole 360 is connected to the through hole 365), an annular groove 362 formed on the circumference of the cylindrical body 361, a plurality of axial through holes 363 formed on the cylindrical body 361 and connecting the annular groove 362 and the air outlet 14, and a plurality of radial through holes 364 formed on the inner wall of the annular groove 362 and connected to the receiving hole 360. (Thus, the gas input from the vent 14 flows into the receiving hole 360 through the axial through hole 363 and the radial through hole 364.) The seal 39 is located in the receiving hole 360. Thus, the engagement state between the seal 39 and the guide sleeve 36 can control whether the receiving hole 360 is connected to the vent 15 (as mentioned above: when the seal 39 and the guide sleeve 36 are not in contact, the gas flow channel is formed; when the seal 39 and the guide sleeve 36 are in contact, the gas flow channel is disconnected).
[0030] In this embodiment, the guide sleeve 36 also includes a portion formed on the end face of the cylindrical body 361. Figure 4 The valve seat 1 has multiple grooves 366 (concentrically arranged from the inside to the outside) on the lower end face of the valve seat 1. Each groove 366 is provided with a second sealing ring 30 that cooperates with the valve seat body 11, thereby ensuring the sealing between the proportional valve 3 and the valve seat 1.
[0031] The above embodiments are only for illustrating the technical concept and features of this utility model, and are intended to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be construed as limiting the scope of protection of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be included within the scope of protection of this utility model.
Claims
1. A pressure controller, characterized in that it include: Valve seat (1), the valve seat (1) includes a valve seat body (11), an air inlet channel (12) opened on one end face of the valve seat body (11), an air outlet channel (13) opened on the other end face of the valve seat body (11), a first receiving hole (16) opened on the valve seat body (11) and connected to the air inlet channel (12), a second receiving hole (17) opened on the valve seat body (11) and connected to the air outlet channel (13), a metal diaphragm pressure sensor (18) fixed in the first receiving hole (16) and the second receiving hole (17), an air outlet (14) opened on the valve seat body (11) and connected to the air inlet channel (12), and an air inlet (15) opened on the valve seat body (11) and connected to the air outlet channel (13). Two valve seat connectors (2) are respectively installed on the two end faces of the valve seat body (11) and respectively inserted into the air inlet channel (12) and the air outlet channel (13); A proportional valve (3) is installed on the valve seat (1) and communicates with the air outlet (14) and the air inlet (15), and is used to connect the air outlet (14) and the air inlet (15) or disconnect the air outlet (14) and the air inlet (15).
2. The pressure controller according to claim 1, characterized in that: Each valve seat connector (2) includes a limiting retaining ring portion (21) abutting against the end face of the valve seat body (11), a mounting portion (22) formed on one end face of the limiting retaining ring portion (21) and installed in the air inlet channel (12) or the air outlet channel (13), an interface portion (25) formed on the other end face of the limiting retaining ring portion (21), a first sealing ring (24) sleeved on the mounting portion (22) and sealed to the valve seat body (11), and a central channel (23) opened at the center of the limiting retaining ring portion (21), the mounting portion (22) and the interface portion (25).
3. The pressure controller according to claim 1 or 2, characterized in that: The proportional valve (3) includes a valve body (31) mounted on the side of the valve seat (1), a valve housing (32) mounted on the valve body (31) and forming an accommodating space therewith, an iron core (33) mounted in the valve housing (32), an electromagnetic coil (34) wound on the iron core (33), a flow guide sleeve (36) mounted in the valve body (31) and corresponding to the air outlet (14) and the air inlet (15), a strain gauge (37) sandwiched between the valve body (31) and the flow guide sleeve (36), a valve core (35) disposed adjacent to the iron core (33) and adjustablely mounted on one side of the strain gauge (37), a valve core adapter (38) connected to the valve core (35) and cooperating with the valve core (35) to clamp the strain gauge (37), and a sealing element (39) mounted on one end of the valve core adapter (38) and cooperating with the flow guide sleeve (36).
4. The pressure controller according to claim 3, characterized in that: The end of the flow guide sleeve (36) has a through hole (365) that communicates with the air inlet (15). The strain gauge (37) has two states: deformation and reset. When the strain gauge (37) is in the deformation state, the valve core (35) is attracted by the iron core (33) and moves upward, and the seal (39) releases the seal from the through hole (365). When the strain gauge (37) is in the reset state, the seal (39) seals the through hole (365).
5. The pressure controller according to claim 3, characterized in that: The flow guide sleeve (36) includes a cylindrical body (361) with a central receiving hole (360), an annular groove (362) on the circumferential surface of the cylindrical body (361), a plurality of axial through holes (363) on the cylindrical body (361) and connecting the annular groove (362) and the air outlet (14), and a plurality of radial through holes (364) on the inner wall of the annular groove (362) and connected to the receiving hole (360). The receiving hole (360) is connected to the through holes (365), and the sealing element (39) is located in the receiving hole (360).
6. The pressure controller according to claim 5, characterized in that: The flow guide sleeve (36) also includes multiple grooves (366) formed on the end face of the cylindrical body (361), and each groove (366) is provided with a second sealing ring (30) that cooperates with the valve seat body (11).