A control valve and its application

Abstract

The present invention discloses a regulating valve and its application, comprising a main body shell, a positive electrode terminal, a nozzle mounting hole, a ventilation component, a positive electrode guide cavity, an installation positioning groove, an inner cavity, a ventilation hole and a driving component, wherein a positive electrode terminal is arranged at the top center of the main body shell, and a nozzle mounting hole is arranged at one side of the bottom of the main body shell. According to the present invention, the nozzle body is fixed and installed by the nozzle mounting hole arranged at the bottom of the main body shell, and the sealing performance of the ventilation component is improved by the sealing ring sleeved on the nozzle body, thereby ensuring the accuracy of detection and regulation of the regulating valve, and the negative electrode seat and the negative electrode terminal are fixed and installed by the installation positioning groove, and the disassembly and installation are simple, thereby reducing the maintenance cost of the regulating valve, and the positive electrode terminal is elastically connected to the piezoelectric dual chip by the arranged positive electrode sheet, thereby avoiding the connection falling off during use, thereby improving the working stability of the regulating valve.

Description

Technical Field

[0001] The present invention relates to the technical field of pneumatic control, in particular to a regulating valve and its application. Background Art

[0002] One of the theoretical foundations for the development of non-invasive instantaneous continuous blood pressure monitors is the vascular unloaded method, which measures the radial artery blood pressure at the wrist of a person. When the blood pressure monitor is working, a special sensor is used to detect and feedback the pulse wave signal when pressure is applied to the blood vessels of the person being tested, which is used to control the pressure in the airbag so that the air pressure changes according to the waveform of the pulse wave. Through closed-loop control, the diameter of the radial artery no longer changes with the blood pressure waveform in the blood vessel, that is, the blood vessel is in an unloaded state, and the pressure value and waveform in the airbag are continuously measured, which is the continuous blood pressure value and blood pressure waveform in the artery. Among them, the control valve is particularly important as the main working component of the monitor. However, the existing control valve air nozzle is mostly sleeved on the bottom of the control valve, with poor sealing effect, which affects the accuracy of detection and regulation. At the same time, the structure of the positive electrode sheet is simple, usually welded inside the control valve, and connection failure is prone to occur during use, which in turn affects the working stability of the control valve. In addition, the negative electrode connection column on the control valve is mostly fixedly installed in the through hole opened in the shell, and the disassembly and installation are cumbersome, thereby increasing the maintenance cost of the control valve and reducing the practicality of the control valve. Therefore, it is very necessary to design a control valve and its application. Summary of the invention

[0003] The purpose of the present invention is to provide a control valve and its application to solve the problems raised in the above background technology.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a regulating valve, comprising a main body shell, a positive electrode terminal, a ventilation assembly and a drive assembly, wherein a positive electrode terminal is arranged at the top center of the main body shell, and a nozzle mounting hole is opened on one side of the bottom of the main body shell, in which a nozzle body in the ventilation assembly is sleeved, and the ventilation assembly consists of a nozzle body, a sealing groove, a sealing ring, an upper through hole and a threaded groove.

[0005] Preferably, an upper through hole is provided at the center of the top of the air nozzle body, a threaded groove is provided at the center of the bottom of the air nozzle body, a sealing groove is provided on the side wall of the air nozzle body, and a sealing ring is provided on the sealing groove.

[0006] Preferably, a positive electrode guide cavity is provided on the top of the main shell, and a mounting positioning groove is provided on one side of the main shell, and the mounting positioning groove and the positive electrode guide cavity are communicated with each other.

[0007] Preferably, an inner cavity is provided inside the main shell, and the inner cavity is communicated with the installation positioning groove, and a vent hole is provided at the bottom of the main shell, and the vent hole is communicated with the inner cavity.

[0008] Preferably, positioning holes are symmetrically provided on the top of the main shell, and an identification block is provided on one side of the top of the main shell close to the installation positioning groove.

[0009] Preferably, the installation positioning groove is provided with a negative pole seat in the driving assembly, and the driving assembly consists of a negative pole seat, a negative pole terminal, a sealing ring, a piezoelectric dual chip, a sealing pressure pad, a negative pole mounting hole, a wedge block, a positioning groove, a matching groove and a fixing groove, a negative pole mounting hole is opened on the top of the negative pole seat, and a negative pole terminal is provided in the negative pole mounting hole.

[0010] Preferably, a positioning groove and a matching groove are respectively provided on one side of the negative electrode seat, and a sealing ring is provided in the positioning groove, a fixing groove is provided at the bottom of the negative electrode seat, and the fixing groove is sleeved on one end of the positive electrode sheet, the positive electrode sheet is located inside the main shell, a supporting sheet is provided on one side of the positive electrode sheet, and a fixing groove is provided at the center of the positive electrode sheet, a first compensation piece is symmetrically provided at the top of the fixing groove, and a second compensation piece is symmetrically provided at the bottom of the fixing groove, square holes are symmetrically provided on the positive electrode sheet, and the fixing groove is located between the square holes.

[0011] Preferably, a wedge block is provided at the bottom of the negative electrode seat, and a piezoelectric dual chip is sleeved in the negative electrode seat, the piezoelectric dual chip and the sealing ring are fitted with each other, and a sealing pressure pad is provided at the bottom of the piezoelectric dual chip.

[0012] An application of a control valve, wherein the application realizes flow rate and pressure regulation functions and corresponding cut-off functions for medium gas in an automated control process, so as to dynamically regulate the gas pressure in a loading airbag.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows: this control valve and its application utilizes the air nozzle mounting hole opened at the bottom of the main body shell to fix and install the air nozzle body, and at the same time utilizes the sealing ring sleeved on the air nozzle body to improve the sealing performance of the ventilation component, thereby ensuring the accuracy of the detection and regulation of the control valve, and utilizes the opened installation positioning groove to fix and install the negative electrode seat and the negative electrode terminal, which is simple to disassemble and install, thereby reducing the maintenance cost of the control valve, and utilizes the set positive electrode sheet to elastically connect the positive electrode terminal and the piezoelectric dual chip to avoid the connection falling off during use, thereby improving the working stability of the control valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a top view of the overall structure of the present invention;

[0015] Figure 2 It is a front cross-sectional view of the overall structure of the present invention;

[0016] Figure 3 for Figure 2A partial enlarged view of the middle A area;

[0017] Figure 4 It is a front cross-sectional view of the ventilation assembly in the present invention;

[0018] Figure 5 It is a front cross-sectional view of a part of the structure of the present invention;

[0019] Figure 6 It is a front cross-sectional view of the main body shell in the present invention;

[0020] Figure 7 It is a three-dimensional diagram of a part of the structure of the present invention;

[0021] Figure 8 A three-dimensional diagram of the negative electrode seat in the present invention;

[0022] Fig. 9 A three-dimensional diagram of the positive electrode sheet in the present invention;

[0023] In the figure: 1. main body shell; 2. positive terminal; 3. nozzle mounting hole; 4. ventilation assembly; 5. positive guide cavity; 6. installation positioning groove; 7. inner cavity; 8. ventilation hole; 9. positioning hole; 10. identification block; 11. drive assembly; 12. positive plate; 13. support plate; 14. fixing groove; 15. first compensation piece; 16. second compensation piece; 17. square hole; 401. nozzle body; 402. sealing groove; 403. sealing ring; 404. upper through hole; 405. threaded groove; 111. negative seat; 112. negative terminal; 113. sealing ring; 114. piezoelectric dual crystal; 115. sealing pressure pad; 116. negative mounting hole; 117. wedge block; 118. positioning groove; 119. matching groove; 120. fixing groove. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] See also Figure 1-9, an embodiment of the present invention: a regulating valve, including a main body shell 1, a positive electrode terminal 2, a vent assembly 4 and a drive assembly 11, a positive electrode terminal 2 is arranged at the top center of the main body shell 1, and a gas nozzle mounting hole 3 is opened on one side of the bottom of the main body shell 1, a gas nozzle main body 401 in the vent assembly 4 is sleeved in the gas nozzle mounting hole 3, the vent assembly 4 is composed of a gas nozzle main body 401, a sealing groove 402, a sealing ring 403, an upper through hole 404 and a threaded groove 405, an upper through hole 404 is opened at the top center of the gas nozzle main body 401, and a threaded groove 405 is opened at the bottom center of the gas nozzle main body 401, a sealing groove 402 is opened on the side wall of the gas nozzle main body 401, and a sealing ring 403 is arranged on the sealing groove 402, and the opening is used to open the gas nozzle main body 401. The sealing groove 402 is conducive to the fixed installation of the sealing ring 403, the top of the main shell 1 is provided with a positive guide cavity 5, and a mounting positioning groove 6 is provided on one side of the main shell 1, and the mounting positioning groove 6 is communicated with the positive guide cavity 5, an inner cavity 7 is provided inside the main shell 1, and the inner cavity 7 is communicated with the mounting positioning groove 6, a vent hole 8 is provided at the bottom of the main shell 1, and the vent hole 8 is communicated with the inner cavity 7, and the inner cavity 7 is facilitated to seal and protect the piezoelectric dual chip 114, the top of the main shell 1 is symmetrically provided with positioning holes 9, and an identification block 10 is provided on the top of the main shell 1 close to the mounting positioning groove 6, the negative pole seat 111 in the drive assembly 11 is provided in the mounting positioning groove 6, and the drive assembly The component 11 is composed of a negative electrode seat 111, a negative electrode terminal 112, a sealing ring 113, a piezoelectric bimorph 114, a sealing pressure pad 115, a negative electrode mounting hole 116, a wedge block 117, a positioning groove 118, a matching groove 119 and a fixing groove 120. The top of the negative electrode seat 111 is provided with a negative electrode mounting hole 116, and the negative electrode terminal 112 is arranged in the negative electrode mounting hole 116. One side of the negative electrode seat 111 is respectively provided with a positioning groove 118 and a matching groove 119, and the sealing ring 113 is arranged in the positioning groove 118. The bottom of the negative electrode seat 111 is provided with a fixing groove 120, and the fixing groove 120 is sleeved with one end of the positive electrode sheet 12. The positive electrode sheet 12 is located inside the main shell 1, and one side of the positive electrode sheet 12 is provided with a support The positive electrode sheet 13 is provided with a fixing groove 14 at the center thereof, a first compensating member 15 is symmetrically arranged at the top of the fixing groove 14, and a second compensating member 16 is symmetrically arranged at the bottom of the fixing groove 14, square holes 17 are symmetrically arranged on the positive electrode sheet 12, and the fixing groove 14 is located between the square holes 17, the positive electrode sheet 12 is used to elastically connect the positive electrode terminal 2 with the piezoelectric dual chip 114 to avoid the connection falling off during use, thereby improving the working stability of the regulating valve, a wedge block 117 is provided at the bottom of the negative electrode seat 111, and a piezoelectric dual chip 114 is sleeved in the negative electrode seat 111, the piezoelectric dual chip 114 and the sealing ring 113 are fitted to each other, and a sealing pressure pad 115 is provided at the bottom of the piezoelectric dual chip 114,The sealing pad 115 is used to facilitate the connection between the piezoelectric bimorph 114 and the ventilation component 4.

[0026] A control valve is used to realize flow and pressure regulation functions and corresponding cut-off functions for medium gas in an automated control process to dynamically regulate the gas pressure in a loading airbag.

[0027] Working principle: When in use, firstly, the sealing ring 403 in the ventilation component 4 is sleeved into the sealing groove 402 on the air nozzle body 401, and then the air nozzle body 401 is installed in the air nozzle installation hole 3 at the bottom of the main shell 1, and then the negative electrode seat 111 in the driving component 11 is fixed in the installation positioning groove 6, and the piezoelectric dual chip 114 is located in the inner cavity 7, and the sealing pressure pad 115 is connected with the ventilation component 4 to complete the assembly of the regulating valve, and the air nozzle installation hole 3 opened at the bottom of the main shell 1 is used to align the air nozzle body 401. The sealing ring 403 sleeved on the air nozzle body 401 is used to improve the sealing performance of the ventilation component 4, thereby ensuring the accuracy of the control valve detection and regulation. The negative electrode seat 111 and the negative electrode terminal 112 are fixed and installed by the provided installation positioning groove 6. The disassembly and installation are simple, thereby reducing the maintenance cost of the control valve. The positive electrode sheet 12 is used to elastically connect the positive electrode terminal 2 and the piezoelectric dual chip 114 to avoid the connection from falling off during use, thereby improving the working stability of the control valve.

[0028] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A control valve, comprising a main housing (1), a positive terminal (2), a venting assembly (4) and a driving assembly (11), characterized in that: A positive terminal (2) is arranged at the center of the top of the main housing (1), and a nozzle mounting hole (3) is opened on one side of the bottom of the main housing (1), and a nozzle body (401) in a vent assembly (4) is sleeved in the nozzle mounting hole (3), and the vent assembly (4) is composed of a nozzle body (401), a sealing groove (402), a sealing ring (403), an upper through hole (404) and a threaded groove (405); An upper through hole (404) is provided at the center of the top of the air nozzle body (401), and a threaded groove (405) is provided at the center of the bottom of the air nozzle body (401). A sealing groove (402) is provided on the side wall of the air nozzle body (401), and a sealing ring (403) is provided on the sealing groove (402); A positive electrode guide cavity (5) is provided on the top of the main housing (1), and a mounting positioning groove (6) is provided on one side of the main housing (1), wherein the mounting positioning groove (6) and the positive electrode guide cavity (5) are in communication with each other; An inner cavity (7) is provided inside the main shell (1), and the inner cavity (7) is communicated with the installation positioning groove (6); a vent hole (8) is provided at the bottom of the main shell (1), and the vent hole (8) is communicated with the inner cavity (7); The negative electrode seat (111) in the driving component (11) is arranged in the installation positioning groove (6), and the driving component (11) is composed of a negative electrode seat (111), a negative electrode terminal (112), a sealing ring (113), a piezoelectric bimorph (114), a sealing pressure pad (115), a negative electrode installation hole (116), a wedge block (117), a positioning groove (118), a matching groove (119) and a fixing groove (120). The negative electrode seat (111) is provided with a negative electrode installation hole (116) at the top, and a negative electrode terminal is arranged in the negative electrode installation hole (116). (112); a positioning groove (118) and a matching groove (119) are respectively provided on one side of the negative electrode seat (111), and a sealing ring (113) is provided in the positioning groove (118), and a fixing groove (120) is provided at the bottom of the negative electrode seat (111); a wedge block (117) is provided at the bottom of the negative electrode seat (111), and a piezoelectric dual chip (114) is sleeved in the negative electrode seat (111), the piezoelectric dual chip (114) and the sealing ring (113) are fitted with each other, and a sealing pressure pad (115) is provided at the bottom of the piezoelectric dual chip (114).

2. A control valve according to claim 1, characterized in that: The top of the main shell (1) is symmetrically provided with positioning holes (9), and a marking block (10) is provided on one side of the top of the main shell (1) close to the installation positioning groove (6).

3. A control valve according to claim 1, characterized in that: The fixing groove (120) is sleeved on one end of the positive electrode sheet (12); the positive electrode sheet (12) is located inside the main housing (1); a support sheet (13) is provided on one side of the positive electrode sheet (12); a fixing groove (14) is provided at the center of the positive electrode sheet (12); a first compensation piece (15) is symmetrically provided at the top of the fixing groove (14); a second compensation piece (16) is symmetrically provided at the bottom of the fixing groove (14); square holes (17) are symmetrically provided on the positive electrode sheet (12); and the fixing groove (14) is located between the square holes (17).

Images