A suction regulating valve

Abstract

The application relates to the technical field of air suction regulating valves, and discloses an air suction regulating valve which comprises a valve body, an air inlet for communicating with external atmosphere is arranged on the valve body, a cavity for medium circulation is arranged in the valve body, a flap valve for plugging the cavity is rotationally connected to the valve body, a bypass valve is arranged in the valve body, an operating mechanism for rotating the flap valve is arranged in the valve body, and a control mechanism for opening and closing the bypass valve is arranged in the valve body. The application enables the flap valve and the bypass valve to realize linkage, the operating mechanism can directly drive the flap valve to rotate, the transmission path is shortened, the equipment operation efficiency is improved, the operating mechanism replaces the traditional valve rod structure, the internal structure of the valve body is simplified, the number of internal components of the valve body is reduced, the internal fault points of the valve body are reduced, potential wear, blockage and leakage points are reduced, the overall operation of the regulating valve is more stable, long-term maintenance cost is effectively saved, and the internal components of the valve body can be maintained by workers.

Description

Technical Field

[0001] This application relates to the technical field of intake regulating valves, and in particular to an intake regulating valve. Background Technology

[0002] The suction regulating valve is an automatic control valve installed on the suction line of the compressor in a refrigeration system. It prevents the motor from overloading by adjusting the suction pressure of the compressor. The device adopts a self-regulating control principle and uses the pressure change of the refrigerant itself to drive the valve core to move. It can accurately maintain the set pressure value without the need for an external power source and is widely used in industrial refrigeration systems such as air conditioning and cold chain equipment.

[0003] In related technologies, the intake regulating valve includes a valve body, an air inlet that connects to the outside atmosphere, a cavity for medium flow inside the valve body, a flap valve for sealing the cavity that is rotatably connected to the valve body, and a valve stem for actuating the flap valve that is slidably connected inside the valve body.

[0004] Typically, intake regulating valves use the pressure of the air source itself to control the movement of the valve stem, thereby controlling the opening or closing of the flap valve. The valve stem is prone to damage due to long-term pressure pulsation and fatigue stress, requiring frequent maintenance and resulting in high costs. Furthermore, the air circuit and control system have complex structures and many potential failure points, making it inconvenient for staff to repair the components. Utility Model Content

[0005] In order to reduce the maintenance cost of the intake regulating valve, this application provides an intake regulating valve.

[0006] This application provides an intake regulating valve, which adopts the following technical solution: An intake regulating valve includes a valve body with an air inlet communicating with the outside atmosphere, a cavity for medium flow within the valve body, a flap valve rotatably connected to the valve body for sealing the cavity, a bypass valve for pressure relief within the valve body, an operating mechanism for rotating the flap valve within the valve body, and a control mechanism for opening and closing the bypass valve within the valve body; when the operating mechanism drives the flap valve to open, the control mechanism drives the bypass valve to close.

[0007] By adopting the above technical solution, the valve body is equipped with an operating mechanism for the flap valve and a control mechanism for opening and closing the bypass valve, enabling the flap valve and the bypass valve to be linked. The operating mechanism can directly drive the flap valve to rotate, thereby shortening the transmission path and improving equipment operating efficiency. The operating mechanism replaces the traditional valve stem structure, simplifying the internal structure of the valve body. By reducing the number of internal components, the number of internal failure points of the valve body is reduced, and potential wear, jamming, and leakage points are lowered, making the overall operation of the regulating valve more stable. This effectively saves long-term maintenance costs and facilitates the maintenance of internal components of the valve body by the staff.

[0008] Optionally, the operating mechanism includes a first motor and a rotating shaft, the rotating shaft being mounted on the flap valve, the first motor being mounted on the rotating shaft, and the control mechanism including a first solenoid valve, the first solenoid valve being used to control the opening and closing of the bypass valve; when the first motor drives the rotating shaft to open the flap valve, the first solenoid valve controls the bypass valve to close.

[0009] By adopting the above technical solution, the first motor drives the rotating shaft to rotate the flap valve, enabling the first motor to directly control the opening and closing of the flap valve. This eliminates the traditional mechanical valve stem and complex pneumatic pipelines, avoiding the problems of empty stroke and jamming in valve stem transmission. This simplifies the internal structure of the valve body and reduces the design difficulty of the valve body. Compared with the valve stem structure, controlling the flap valve and bypass valve with the first motor and the first solenoid valve respectively can greatly reduce the number of internal valve components, thereby reducing potential wear, leakage and failure points, reducing the failure rate of internal valve components, and further reducing maintenance frequency and spare parts costs.

[0010] Optionally, the first motor is connected to a pressure sensor; when the pressure sensor detects pressure, the first motor drives the flap valve to rotate via a rotating shaft.

[0011] By adopting the above technical solution, a pressure sensor is connected to the first motor, enabling the pressure sensor to measure the pressure of the medium in the valve body, thereby achieving automatic and precise control of the flap valve. The pressure sensor detects the intake pressure signal and immediately triggers the first motor to operate without manual intervention, thus improving the response speed and control accuracy of the operating mechanism. By replacing potentially sluggish or malfunctioning mechanical linkage mechanisms with electrical automation control, the stability and reliability of the entire compressor valve group are further enhanced.

[0012] Optionally, the operating mechanism includes an adjusting screw and a second motor. The adjusting screw is rotatably connected to the second motor. The adjusting screw is provided with a first movable part and a second movable part. The flap valve is located on the movement path of the first movable part, and the bypass valve is located on the movement path of the second movable part. When the first movable part drives the flap valve to open, the second movable part drives the bypass valve to close.

[0013] By adopting the above technical solution, when the second motor drives the adjusting screw to rotate, the flap valve is located on the moving path of the first movable part, and the bypass valve is located on the moving path of the second movable part. The second motor can realize the opening and closing of the flap valve and the bypass valve respectively by rotating the screw, so that the control of the two valves is integrated together, thereby simplifying the internal structure of the valve body, reducing manufacturing costs and component failure rate, and further improving the reliability and automation level of the entire valve system.

[0014] Optionally, a valve stem is slidably connected to the valve body, and the operating mechanism includes a power component for driving the valve stem to move. The valve stem is provided with a first driving component and a second driving component. The first driving component is used to drive the flap valve to open and close, and the second driving component is used to drive the bypass valve to open and close. When the first driving component drives the flap valve to open, the second driving component drives the bypass valve to close.

[0015] By adopting the above technical solution, the flap valve and the bypass valve are opened and closed by the first driving component and the second driving component respectively. This allows the flap valve and the bypass valve to open and close one by one by the power component driving the valve stem to move linearly. The simultaneous driving of the flap valve and the bypass valve by a single valve stem makes the internal structure of the valve body more compact, reduces the number of moving parts inside the valve body, effectively improves the reliability and durability of the valve body, and reduces the complexity of installation, commissioning and daily maintenance.

[0016] Optionally, the valve body is provided with a cleaning mechanism for rinsing the valve body. The cleaning mechanism includes a cleaning spray gun and a liquid storage tank. The liquid storage tank is connected to the cleaning spray gun and is used to store cleaning agent. The cleaning spray gun is used to spray cleaning agent to clean the inside of the valve body.

[0017] By adopting the above technical solution, and with a cleaning mechanism for flushing the valve body installed in the placement hole, the operator can perform in-situ cleaning of the valve body without disassembly. The operator can quickly start the cleaning program at any time and accurately spray the cleaning agent into the inner cavity of the valve body, thereby greatly simplifying the maintenance process of the valve body and further improving the maintenance efficiency of the regulating valve. By regularly cleaning the valve body, the accumulation of dirt and impurities inside the valve body is reduced, thereby reducing the risk of valve body jamming, extending the service life of the valve body, and ensuring the purity of the medium flowing through the valve body.

[0018] Optionally, a baffle for blocking the placement hole is slidably connected to the valve body. The baffle is provided with a spring block. The valve body has a sliding groove for the spring block to slide in. The groove wall of the sliding groove has a groove for the spring block to be inserted into. When the spring block is inserted into the groove, the baffle blocks the opening of the placement hole.

[0019] By adopting the above technical solution, a groove for inserting a bullet is opened on the wall of the sliding groove. The operator slides the baffle to insert the bullet into the groove, thereby blocking the opening of the placement hole. This prevents the baffle from being accidentally opened due to vibration or external force during equipment operation, thus preventing contaminants from entering the placement hole and avoiding the placement hole from affecting the flow of the medium in the valve body, thereby improving the overall stability of the equipment.

[0020] Optionally, a guide slope is provided on the groove wall of the groove, and the distance from the guide slope to the baffle gradually increases along the sliding direction of the baffle sealing placement hole. The guide slope is used to guide the spring block to be inserted into or removed from the groove.

[0021] By adopting the above technical solution, the distance from the guide slope to the baffle gradually increases along the sliding direction of the baffle sealing hole, so that the bullet can be inserted into or withdrawn from the groove more smoothly along the tilting direction of the guide slope. The staff can feel the feedback of the bullet gradually inserting into the groove, reducing the possibility of the bullet getting stuck, and making it easier for the staff to slide and fix the baffle.

[0022] In summary, this application includes at least one of the following beneficial technical effects: 1. The valve body is equipped with an operating mechanism for the flap valve and a control mechanism for opening and closing the bypass valve, enabling the flap valve and bypass valve to be linked. The operating mechanism can directly drive the flap valve to rotate, thereby shortening the transmission path and improving equipment operating efficiency. The operating mechanism replaces the traditional valve stem structure, simplifying the internal structure of the valve body. By reducing the number of internal components, the number of internal failure points of the valve body is reduced, and potential wear, jamming, and leakage points are lowered, making the overall operation of the regulating valve more stable. This effectively saves long-term maintenance costs and facilitates the maintenance of internal components of the valve body by the staff.

[0023] 2. The first motor drives the rotating shaft to rotate the flap valve, enabling the first motor to directly control the opening and closing of the flap valve. This eliminates the traditional mechanical valve stem and complex pneumatic pipelines, avoiding the problems of idle stroke and jamming in valve stem transmission. This simplifies the internal structure of the valve body and reduces the design difficulty of the valve body. Compared with the valve stem structure, controlling the flap valve and bypass valve with the first motor and the first solenoid valve respectively can greatly reduce the number of internal valve components, thereby reducing potential wear, leakage and failure points, lowering the failure rate of internal valve components, and further reducing maintenance frequency and spare parts costs. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of Example 1; Figure 2 It is Example 1 Figure 1 A sectional view along line AA. Figure 3 This is a structural schematic diagram of Example 2; Figure 4 It is Example 2 Figure 3 Sectional view along line BB; Figure 5 This is a schematic diagram of the structure of Example 3; Figure 6 It is Example 3 Figure 5 A cross-sectional view along the CC line; Figure 7 This is a structural schematic diagram of Example 4; Figure 8 It is Example 4 Figure 7 A sectional view along the DD line; Figure 9 It is Example 4 Figure 7 A sectional view along the EE line; Figure 10 yes Figure 9 Enlarged schematic diagram of section F in the middle.

[0025] Reference numerals: 1. Valve body; 11. Air inlet; 12. Cavity; 13. Valve stem; 131. First driving component; 132. Second driving component; 14. Placement hole; 15. Cleaning mechanism; 151. Cleaning spray gun; 152. Liquid storage tank; 16. Baffle; 161. Spring block; 17. Sliding groove; 171. Groove; 172. Guide slope; 2. Flip valve; 3. Bypass valve; 4. Operating mechanism; 41. First motor; 411. Pressure sensor; 42. Rotating shaft; 43. Adjusting screw; 431. First moving part; 432. Second moving part; 44. Second motor; 45. Power component; 5. Control mechanism; 51. First solenoid valve. Detailed Implementation

[0026] The following is in conjunction with the appendix Figures 1-10 This application will be described in further detail.

[0027] Example 1 This embodiment discloses an intake regulating valve. (Refer to...) Figure 1 and Figure 2An intake regulating valve includes a valve body 1 with an air inlet 11 communicating with the outside atmosphere and a cavity 12 for medium flow within the valve body 1. A flap valve 2 for sealing the cavity 12 is rotatably connected to the valve body 1 near the air inlet 11. A bypass valve 3 for pressure relief is rotatably connected within the valve body 1. When the flap valve 2 is closed, the bypass valve 3 is open, allowing outside air to enter the valve body 1 through the bypass valve 3. This reduces the impact on the power grid and mechanical components, ensuring a smooth and reliable start-up of the entire equipment.

[0028] Reference Figure 2 The valve body 1 contains an operating mechanism 4 for rotating the flap valve 2. The operating mechanism 4 includes a first motor 41 and a rotating shaft 42. The rotating shaft 42 is fixedly connected to the flap valve 2, and the first motor 41 is mounted on the rotating shaft 42. The first motor 41 and the flap valve 2 are coaxially fixed. The first motor 41 is a stepper motor, used to directly drive the rotation of the flap valve 2. The valve body 1 also contains a control mechanism 5 for controlling the opening and closing of the bypass valve 3. The control mechanism 5 includes a first solenoid valve 51. When the first motor 41 drives the rotating shaft 42 to open the flap valve 2, the first solenoid valve 51 synchronously controls the bypass valve 3 to close.

[0029] Reference Figure 2 A pressure sensor 411 is connected to the first motor 41, which is used to detect the pressure of the medium inside the valve body 1. A compressor is connected to the end of the valve body 1 furthest from the air inlet 11, and the pressure sensor 411 is located on the side of the compressor closest to the air inlet 11. When the pressure sensor 411 receives a start command and detects pressure, it transmits a signal to the first motor 41 and the first solenoid valve 51. The first motor 41 drives the rotating shaft 42 to rotate, thereby opening the flap valve 2. Simultaneously, the first solenoid valve 51 controls the bypass valve 3 to close.

[0030] The implementation principle of Example 1 is as follows: When the pressure sensor 411 receives the start command and detects the pressure, the pressure sensor 411 sends a signal to the first motor 41 and the first solenoid valve 51. The first motor 41 drives the rotating shaft 42 to rotate to open the flap valve 2, while the first solenoid valve 51 closes the bypass valve 3.

[0031] Example 2 Reference Figure 3 and Figure 4The difference between this embodiment and Embodiment 1 is that the operating mechanism 4 includes an adjusting screw 43 and a second motor 44, with the adjusting screw 43 rotating on the second motor 44. A first movable member 431 and a second movable member 432 are fixedly connected to the outer surface of the adjusting screw 43, both being threaded sleeves. The flap valve 2 is located on the movement path of the first movable member 431, and the bypass valve 3 is located on the movement path of the second movable member 432. The second motor 44 drives the adjusting screw 43 to rotate, thereby synchronously driving the first movable member 431 and the second movable member 432 to slide, thus completing the opening and closing of the flap valve 2 and the bypass valve 3.

[0032] The implementation principle of Example 2 is as follows: the second motor 44 drives the adjusting screw 43 to rotate, so as to drive the first movable part 431 and the second movable part 432 on the adjusting screw 43 to slide. At the same time, the first movable part 431 drives the flap valve 2 to open, and the second movable part 432 drives the bypass valve 3 to close.

[0033] Example 3 Reference Figure 5 and Figure 6 The difference between this embodiment and Embodiment 1 is that a valve stem 13 is slidably connected inside the valve body 1, and the operating mechanism 4 includes a power component 45, which is an electric cylinder. The power component 45 drives the valve stem 13 to move through linear motion. A first driving component 131 and a second driving component 132 are fixedly connected to the outer surface of the valve stem 13. Both the first driving component 131 and the second driving component 132 are threaded sleeves. The first driving component 131 is used to drive the flap valve 2 to open and close, and the second driving component 132 is used to drive the bypass valve to open and close.

[0034] The implementation principle of Example 3 is as follows: the power component 45 drives the valve stem 13 to move linearly, so as to drive the first driving component 131 and the second driving component 132 on the valve stem 13 to slide. At the same time, the first driving component 131 drives the flap valve 2 to open, and the second driving component 132 drives the bypass valve 3 to close.

[0035] Example 4 Reference Figure 7 and Figure 8 The difference between this embodiment and Embodiment 1 is that the valve body 1 is provided with a cleaning mechanism 15 for rinsing the valve body 1. The cleaning mechanism 15 includes a cleaning spray gun 151 and a liquid storage tank 152. The cleaning spray gun 151 is connected to the liquid storage tank 152 and is fixedly connected to the outer surface of the valve body 1. A placement hole 14 communicating with the cavity 12 is opened on the surface of the valve body 1 near the liquid storage tank 152, and the cleaning spray gun 151 is disposed in the placement hole 14. The liquid storage tank 152 is used to store cleaning agent, and the operator can start the cleaning spray gun 151 to spray cleaning agent to clean the inside of the valve body 1.

[0036] Reference Figure 8 and Figure 9 A baffle 16 for sealing the placement hole 14 is slidably connected to the inner surface of the valve body 1.

[0037] Reference Figure 9 and Figure 10 A spring block 161 is fixedly connected to the surface of the baffle 16 near the placement hole 14. A sliding groove 17 for the spring block 161 to slide is provided on the inner surface of the valve body 1.

[0038] Reference Figure 8 and Figure 10 There are two sliding grooves 17, which are respectively located on both sides of the placement hole 14. The bottom wall of the sliding groove 17 is provided with a groove 171 for inserting the spring block 161. When the spring block 161 is inserted into the groove 171, the baffle 16 can block the opening of the placement hole 14.

[0039] Reference Figure 9 and Figure 10 A guide slope 172 is provided on the groove wall of the groove 171 near the air inlet 11. The distance from the guide slope 172 to the baffle 16 gradually increases along the sliding direction of the baffle 16 blocking the placement hole 14. The spring block 161 can be inserted into or withdrawn from the groove 171 more smoothly along the inclined direction of the guide slope 172.

[0040] The implementation principle of Example 4 is as follows: When the staff needs to clean the inner surface of the valve body 1, the staff slides the baffle 16 so that the spring block 161 is disengaged from the groove 171 along the guide slope 172, and then turns on the cleaning spray gun 151 to clean the inner surface of the valve body 1, so as to reduce the accumulation of dirt and impurities on the inner surface of the valve body 1.

[0041] Unless otherwise defined, the technical or scientific terms used in this application shall have the ordinary meaning understood by one of ordinary skill in the art to which this application pertains. The terms "first," "second," "third," and similar terms used in this application specification and claims do not indicate any order, quantity, or importance, but are merely used to distinguish different components. The terms "an" or "a" and similar terms do not indicate a quantity limitation, but rather indicate the presence of at least one. The terms "comprising" or "including" and similar terms mean that the elements or objects preceding "comprising" or "including" encompass the elements or objects listed following "comprising" or "including" and their equivalents, and do not exclude other elements or objects. "Above," "below," "left," "right," etc., are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0042] The above description is only a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, improvements, etc., made within the design concept of this application should be included within the protection scope of this application.

Claims

1. An intake regulating valve, comprising a valve body (1), wherein the valve body (1) has an air inlet (11) communicating with the external atmosphere, and a cavity (12) for medium flow is provided inside the valve body (1), a flap valve (2) for sealing the cavity (12) is rotatably connected to the valve body (1), and a bypass valve (3) for pressure relief is provided inside the valve body (1), characterized in that: The valve body (1) is provided with an operating mechanism (4) for rotating the flap valve (2) and a control mechanism (5) for opening and closing the bypass valve (3). When the operating mechanism (4) drives the flap valve (2) to open, the control mechanism (5) drives the bypass valve (3) to close.

2. The intake regulating valve according to claim 1, characterized in that: The operating mechanism (4) includes a first motor (41) and a rotating shaft (42). The rotating shaft (42) is mounted on the flap valve (2). The first motor (41) is mounted on the rotating shaft (42). The control mechanism (5) includes a first solenoid valve (51). The first solenoid valve (51) is used to control the opening and closing of the bypass valve (3). When the first motor (41) drives the rotating shaft (42) to open the flap valve (2), the first solenoid valve (51) controls the bypass valve (3) to close.

3. The intake regulating valve according to claim 2, characterized in that: The first motor (41) is connected to a pressure sensor (411); when the pressure sensor (411) detects pressure, the first motor (41) drives the flap valve (2) to rotate through the rotating shaft (42).

4. The intake regulating valve according to claim 1, characterized in that: The operating mechanism (4) includes an adjusting screw (43) and a second motor (44). The adjusting screw (43) is rotatably connected to the second motor (44). The adjusting screw (43) is provided with a first movable part (431) and a second movable part (432). The flap valve (2) is located on the moving path of the first movable part (431), and the bypass valve (3) is located on the moving path of the second movable part (432). When the first movable part (431) drives the flap valve (2) to open, the second movable part (432) drives the bypass valve (3) to close.

5. The intake regulating valve according to claim 1, characterized in that: A valve stem (13) is slidably connected inside the valve body (1). The operating mechanism (4) includes a power component (45), which is used to drive the valve stem (13) to move. The valve stem (13) is provided with a first driving component (131) and a second driving component (132). The first driving component (131) is used to drive the flap valve (2) to open and close, and the second driving component (132) is used to drive the bypass valve (3) to open and close. When the first driving component (131) drives the flap valve (2) to open, the second driving component (132) drives the bypass valve (3) to close.

6. The intake regulating valve according to claim 1, characterized in that: The valve body (1) is provided with a cleaning mechanism (15) for rinsing the valve body (1). The cleaning mechanism (15) includes a cleaning spray gun (151) and a liquid storage tank (152). The liquid storage tank (152) is connected to the cleaning spray gun (151). The liquid storage tank (152) is used to store cleaning agent. The cleaning spray gun (151) is used to spray cleaning agent to clean the inside of the valve body (1).

7. The intake regulating valve according to claim 6, characterized in that: A baffle (16) for sealing the placement hole (14) is slidably connected to the valve body (1). A spring block (161) is provided on the baffle (16). A sliding groove (17) for the spring block (161) to slide is provided on the valve body (1). A groove (171) for the spring block (161) to be inserted is provided on the groove wall of the sliding groove (17). When the spring block (161) is inserted into the groove (171), the baffle (16) seals the opening of the placement hole (14).

8. The intake regulating valve according to claim 7, characterized in that: The groove (171) has a guide slope (172) on its groove wall. The distance from the guide slope (172) to the baffle (16) gradually increases along the sliding direction of the baffle (16) blocking the placement hole (14). The guide slope (172) is used to guide the spring block (161) to insert into or exit the groove (171).

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