A four-ventilation valve

Abstract

This utility model discloses a four-ventilation valve, belonging to the field of ventilation valves. The four-ventilation valve includes a valve body, an actuator, a valve stem, a connecting rod assembly, and a valve plate. The valve body has an upper air outlet, a lower air outlet, a left air outlet, and a right air outlet. The lower air outlet, left air outlet, and right air outlet are all rotatably connected to the valve plate via the valve stem. The actuator is located at the rear of the valve body. The rear end of the valve stem at the lower air outlet extends out of the valve body and connects to the actuator. The front ends of all valve stems extend out of the valve body and connect to the connecting rod assembly. This utility model discloses a four-ventilation valve that uses a single actuator in conjunction with the connecting rod assembly to drive the multi-air outlet valve plates through mechanical linkage, achieving precise switching between three positions for four ventilation ducts. Simultaneously, it reduces size, lowers cost, reduces malfunctions, and simplifies maintenance.

Description

Technical Field

[0001] This utility model belongs to the field of air valves, and in particular relates to a four-way ventilation valve. Background Technology

[0002] In ventilation and air conditioning systems, industrial waste gas treatment, cleanrooms, and other fields, duct systems often need to achieve multi-directional airflow switching or distribution. Traditional technologies primarily rely on the following two methods to achieve complex airflow path control:

[0003] 1. Achieving three-position switching of four ventilation ducts through a combination of three independent air valves. Each air valve is equipped with an independent actuator, and the airflow switching between different positions is achieved through coordinated control. This method requires the installation of multiple valve bodies, actuators, and supporting pipelines, occupying a large space and increasing system complexity.

[0004] 2. An integrated four-valve system is used, but each station is still driven by an independent actuator. Although this method does not require the installation of multiple valve bodies, it requires multiple actuators, increasing energy consumption, failure rate, and maintenance workload. Furthermore, the multi-actuator layout results in a large valve body size, making it difficult to install in confined spaces.

[0005] Furthermore, both of the above methods require the use of multiple actuators. The timing of these multiple actuators needs to be coordinated, which can easily lead to control delays or synchronization errors, thus affecting the efficiency of airflow switching. Utility Model Content

[0006] The purpose of this invention is to provide a four-ventilation valve to overcome at least one of the above-mentioned defects in the prior art.

[0007] To achieve this objective, the present invention adopts the following technical solution:

[0008] This utility model provides a four-way ventilation valve, including a valve body, an actuator, a valve stem, a connecting rod assembly, and a valve plate. The valve body has an upper air inlet, a lower air inlet, a left air inlet, and a right air inlet. The lower air inlet, the left air inlet, and the right air inlet are all rotatably connected to the valve plate via the valve stem. The actuator is located on the rear side of the valve body. The rear end of the valve stem of the lower air inlet extends out of the valve body and connects to the actuator. The front ends of all valve stems extend out of the valve body and connect to the connecting rod assembly.

[0009] Preferably, the linkage assembly includes a first linkage, a first elastic element, a second elastic element, and a second linkage. The first linkage and the second linkage are arranged front and rear. The front end of the valve stem of the downwind outlet has a first transmission block and a second transmission block. One end of the first linkage is connected to the valve stem of the downwind outlet via the first transmission block, and the other end of the first linkage is fixedly connected to the valve stem of the left outlet. The left end of the first elastic element is connected to the left outlet, and the right end of the first elastic element is connected to the first linkage. The first elastic element is located in front of the left outlet. One end of the second linkage is connected to the valve stem of the downwind outlet via the second transmission block, and the other end of the second linkage is fixedly connected to the valve stem of the right outlet. The right end of the second elastic element is connected to the right outlet, and the left end of the second elastic element is connected to the second linkage. The second elastic element is located in front of the right outlet.

[0010] Preferably, the first connecting rod includes a first connecting arm, a second connecting arm, a third connecting arm, a first pin, and a second pin. One end of the first connecting arm has a first arc-shaped groove, and the first transmission block extends into the first arc-shaped groove. The other end of the first connecting arm is hinged to one end of the second connecting arm via the first pin, and the other end of the second connecting arm is hinged to one end of the third connecting arm via the second pin. The other end of the third connecting arm is fixedly connected to the valve stem of the left air vent. The right end of the first elastic member is connected to the second pin. In the initial state, the first elastic member is in a contracted state, and the first transmission block abuts against the left end wall of the first arc-shaped groove.

[0011] Preferably, the second connecting rod includes a fourth connecting arm, a fifth connecting arm, a sixth connecting arm, a third pin, and a fourth pin. One end of the fourth connecting arm has a second arc-shaped groove, and the second transmission block extends into the second arc-shaped groove. The other end of the fourth connecting arm is hinged to one end of the fifth connecting arm via the third pin, and the other end of the fifth connecting arm is hinged to one end of the sixth connecting arm via the fourth pin. The other end of the sixth connecting arm is fixedly connected to the valve stem of the right air vent. The left end of the second elastic member is connected to the fourth pin. In the initial state, the second elastic member is in a stretched state, and the second transmission block abuts against the left end wall of the second arc-shaped groove.

[0012] Preferably, both the first elastic element and the second elastic element are springs.

[0013] Preferably, the cross-sections of the upwind opening, downwind opening, left wind opening, and right wind opening are circular or square.

[0014] Preferably, the actuator is an electric actuator, a pneumatic actuator, or a hydraulic actuator.

[0015] Preferably, it also includes a PLC controller, and the actuator is electrically connected to the PLC controller.

[0016] Preferably, the arc of both the first arc groove and the second arc groove is 90°.

[0017] Preferably, the upper and lower side walls inside the left and right air vents are equipped with baffles, and the upper and lower side baffles are located on opposite sides of the valve plate.

[0018] The beneficial effects of this utility model are as follows:

[0019] 1. By using a single actuator in conjunction with a linkage assembly to drive the mechanical linkage of multiple air outlet valve plates, precise switching between three working positions in four ventilation ducts can be achieved, while reducing size, lowering costs, reducing failures and simplifying maintenance.

[0020] 2. By using the first and second elastic elements as passive reset elements, no additional energy is required for driving.

[0021] 3. The preload of the first and second elastic elements is used to achieve mechanical self-holding of the valve plate in the closed state, eliminating the synchronization error of traditional multi-actuator systems.

[0022] 4. By cooperating with the first arc-shaped groove, the first transmission block, the second arc-shaped groove, and the second transmission block, the action of adjacent valve plates is avoided by accident, the stability of the switching process is improved, and the timing staggered control of the action of multiple valve plates is realized.

[0023] 5. With the double three-arm hinge structure, a single actuator can switch between three positions without the need for a complex structure. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the main structure of this utility model (when the actuator is at the 0° position).

[0025] Figure 2 This is a schematic diagram of the cooperation structure between the first connecting rod and the first transmission block of this utility model (when the actuator is in the 0° position).

[0026] Figure 3 This is a schematic diagram of the cooperation structure of the second connecting rod and the second transmission block of this utility model (when the actuator is in the 0° position).

[0027] Figure 4 This is a schematic diagram of the main structure of this utility model (when the actuator is at the 90° position).

[0028] Figure 5 This is a schematic diagram of the cooperation structure between the first connecting rod and the first transmission block of this utility model (when the actuator is in the 90° position).

[0029] Figure 6 This is a schematic diagram of the cooperation structure of the second connecting rod and the second transmission block of this utility model (when the actuator is in the 90° position).

[0030] Figure 7 This is a schematic diagram of the main structure of this utility model (when the actuator is in the 180° position).

[0031] Figure 8 This is a schematic diagram of the cooperation structure between the first connecting rod and the first transmission block of this utility model (when the actuator is in the 180° position).

[0032] Figure 9 This is a schematic diagram of the cooperation structure of the second connecting rod and the second transmission block of this utility model (when the actuator is in the 180° position).

[0033] Figure 10 This is a system block diagram of this utility model.

[0034] The labels in the attached diagram are as follows: 1-valve body, 2-actuator, 3-valve stem, 4-linkage assembly, 5-valve plate, 11-upper air outlet, 12-lower air outlet, 13-left air outlet, 14-right air outlet, 41-first link, 42-first elastic element, 43-second elastic element, 44-second link, 6-first transmission block, 7-second transmission block, 411-first connecting arm, 412-second connecting arm, 413-third connecting arm, 414-first pin, 415-second pin, 416-first arc groove, 441-fourth connecting arm, 442-fifth connecting arm, 443-sixth connecting arm, 444-third pin, 445-fourth pin, 446-second arc groove, 8-PLC controller, 9-baffle. Detailed Implementation

[0035] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments.

[0036] Contents not described in detail in this specification are existing technologies known to those skilled in the art. In the description of this utility model, it should be understood that terms such as "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are used only for the convenience of describing this utility model and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting this utility model. Furthermore, terms such as "first," "second," and "third," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0037] like Figures 1 to 10As shown, this embodiment provides a four-ventilation valve, including a valve body 1, an actuator 2, a valve stem 3, a connecting rod assembly 4, and a valve plate 5. The valve body 1 has an upper air outlet 11, a lower air outlet 12, a left air outlet 13, and a right air outlet 14. The lower air outlet 12, the left air outlet 13, and the right air outlet 14 are all rotatably connected to the valve plate 5 via the valve stem 3. The actuator 2 is located at the rear of the valve body 1. The rear end of the valve stem 3 of the lower air outlet 12 extends outside the valve body 1 and connects to the actuator 2. The front ends of all valve stems 3 extend outside the valve body 1 and connect to the connecting rod assembly 4. The actuator 2 outputs power to the valve stem 3 of the lower air outlet 12, directly driving the valve plate 5 of the lower air outlet 12 to rotate around its valve stem 3, thereby realizing the opening and closing action of the lower air outlet 12. At the same time, the valve stem 3 of the lower air outlet 12 transmits the rotational motion to the valve stems 3 of the left air outlet 13 and the right air outlet 14 through the connecting rod assembly 4, causing the valve plates 5 of the left and right air outlets 14 to rotate synchronously. By controlling the rotation angle of the valve stem 3 of the lower air outlet 12 (such as preset positions of 0°, 90°, and 180°) through actuator 2, the opening and closing states of the valve plates 5 of the lower air outlet 12, left air outlet 13, and right air outlet 14 can be adjusted synchronously, thereby achieving three-position switching of the four air ducts (the upper air outlet 11 is the common channel, and the lower air outlet 12, left air outlet 13, and right air outlet 14 are branch channels). Only one actuator 2 and linkage assembly 4 are needed to achieve multi-position control, eliminating the need for a separate drive device for each air outlet, significantly reducing the overall size of the valve body 1, and making it suitable for installation in confined spaces. The mechanical linkage structure replaces the collaborative control logic of multiple actuators 2, avoiding synchronization errors or delays caused by timing differences between multiple actuators 2, thus improving the accuracy and stability of airflow switching. At the same time, a single actuator 2 reduces electrical control nodes, lowering the probability of failure. Furthermore, reducing the number of actuators 2 lowers equipment procurement costs. Furthermore, with fewer structural components, only the single actuator 2 and linkage assembly 4 need to be inspected during later maintenance, simplifying the maintenance process and reducing maintenance costs.

[0038] The linkage assembly 4 includes a first linkage 41, a first elastic element 42, a second elastic element 43, and a second linkage 44. The first linkage 41 and the second linkage 44 are arranged front and rear. The front end of the valve stem 3 of the downdraft 12 has a first transmission block 6 and a second transmission block 7. One end of the first linkage 41 is connected to the valve stem 3 of the downdraft 12 via the first transmission block 6, and the other end of the first linkage 41 is fixedly connected to the valve stem 3 of the left vent 13. The left end of the first elastic element 42 is connected to... Connected to the left air vent 13, the right end of the first elastic element 42 is connected to the first connecting rod 41, and the first elastic element 42 is located in front of the left air vent 13. One end of the second connecting rod 44 is connected to the valve stem 3 of the lower air vent 12 via the second transmission block 7, and the other end of the second connecting rod 44 is fixedly connected to the valve stem 3 of the right air vent 14. The right end of the second elastic element 43 is connected to the right air vent 14, and the left end of the second elastic element 43 is connected to the second connecting rod 44, and the second elastic element 43 is located in front of the right air vent 14. In this embodiment, both the first elastic element 42 and the second elastic element 43 are springs. Through the pulling action of the first elastic element 42 on the first connecting rod 41, it is ensured that the valve plate 5 of the left air vent 13 can be rotated and closed after the force of the actuator 2 is released. Through the pulling action of the second elastic element 43 on the second connecting rod 44, it is ensured that the valve plate 5 of the right air vent 14 can be rotated and closed after the force of the actuator 2 is released. The first elastic element 42 and the second elastic element 43 serve as passive reset elements, eliminating the need for additional energy drive. The preload of the first elastic element 42 and the second elastic element 43 achieves mechanical self-holding of the valve plate 5 in the closed state, eliminating synchronization errors inherent in traditional multi-actuator 2 systems. The three-position switching is as follows:

[0039] When actuator 2 is in the 0° position, valve plate 5 of right air outlet 14 is open, and valve plates 5 of left air outlet 13 and lower air outlet 12 are closed. At this time, the first elastic element 42 is in a contracted state, and the second elastic element 43 is in a stretched state.

[0040] When actuator 2 is in the 90° position, the valve stem 3 of the lower air outlet 12 directly drives the valve plate 5 of the lower air outlet 12 to rotate 90° clockwise. At the same time, the second transmission block 7 releases the downward force on the second connecting rod 44, and pulls the second connecting rod 44 upward through the second elastic element 43, thereby causing the valve stem 3 of the right air outlet 14 to rotate 90° clockwise, driving the valve plate 5 of the right air outlet 14 to rotate 90° clockwise. In this state, the first transmission block 6 does not act on the first connecting rod 41. At this time, the valve plate 5 of the lower air outlet 12 is open, and the valve plates 5 of the left air outlet 13 and the right air outlet 14 are closed. The first elastic element 42 and the second elastic element 43 are both in the contracted state.

[0041] When actuator 2 is in the 180° position, the valve stem 3 of the lower air outlet 12 continues to drive the valve plate 5 of the lower air outlet 12 to rotate 90° clockwise. At the same time, the first transmission block 6 pulls down the first connecting rod 41, causing the valve stem 3 of the left air outlet 13 to rotate 90° clockwise, driving the valve plate 5 of the left air outlet 13 to rotate 90° clockwise. In this state, the second transmission block 7 does not act on the second connecting rod 44. At this time, the valve plate 5 of the left air outlet 13 is open, and the valve plates 5 of the lower air outlet 12 and the right air outlet 14 are closed. The first elastic element 42 is in a stretched state, and the second elastic element 43 is in a contracted state.

[0042] The first connecting rod 41 includes a first connecting arm 411, a second connecting arm 412, a third connecting arm 413, a first pin 414, and a second pin 415. One end of the first connecting arm 411 has a first arc-shaped groove 416, and the first transmission block 6 extends into the first arc-shaped groove 416. The other end of the first connecting arm 411 is hinged to one end of the second connecting arm 412 through the first pin 414. The other end of the second connecting arm 412 is hinged to one end of the third connecting arm 413 through the second pin 415. The other end of the third connecting arm 413 is fixedly connected to the valve stem 3 of the left air vent 13. The right end of the first elastic member 42 is connected to the second pin 415. In the initial state, the first elastic member 42 is in a contracted state, and the first transmission block 6 abuts against the left end wall of the first arc-shaped groove 416. The second connecting rod 44 includes a fourth connecting arm 441, a fifth connecting arm 442, a sixth connecting arm 443, a third pin 444, and a fourth pin 445. One end of the fourth connecting arm 441 has a second arc-shaped groove 446, and the second transmission block 7 extends into the second arc-shaped groove 446. The other end of the fourth connecting arm 441 is hinged to one end of the fifth connecting arm 442 via the third pin 444. The other end of the fifth connecting arm 442 is hinged to one end of the sixth connecting arm 443 via the fourth pin 445. The other end of the sixth connecting arm 443 is fixedly connected to the valve stem 3 of the right air vent 14. The left end of the second elastic member 43 is connected to the fourth pin 445. In the initial state, the second elastic member 43 is in a stretched state, and the second transmission block 7 abuts against the left end wall of the second arc-shaped groove 446. The arc of both the first arc-shaped groove 416 and the second arc-shaped groove 446 is 90°. The design of the first arc-shaped groove 416 limits the motion path of the first transmission block 6, achieving segmented control of the idle stroke and drive stroke, ensuring that the actuator 2 accurately drives the valve plate 5 of the left air outlet 13 within a specific angle range. The design of the second arc-shaped groove 446 limits the motion path of the second transmission block 7, achieving segmented control of the idle stroke and drive stroke, ensuring that the actuator 2 accurately drives the valve plate 5 of the right air outlet 14 within a specific angle range. Through the cooperation of the first arc-shaped groove 416, the first transmission block 6, the second arc-shaped groove 446, and the second transmission block 7, the accidental triggering of adjacent valve plate 5 is avoided, improving the stability of the switching process and achieving staggered timing control of multiple valve plate 5 actions. The double three-arm hinged structure allows for three-position switching of a single actuator 2 without the need for a complex structure.

[0043] The cross-sections of the upper air vent 11, lower air vent 12, left air vent 13, and right air vent 14 are circular or square. The actuator 2 can be an electric actuator 2, a pneumatic actuator 2, or a hydraulic actuator 2. The specific choice depends on the application requirements.

[0044] It also includes a PLC controller 8, and the actuator 2 is electrically connected to the PLC controller 8. The PLC controller 8 automatically controls the actuator 2 to realize the automatic switching of workstations.

[0045] The upper and lower side walls inside the left air vent 13 and the right air vent 14 are equipped with baffles 9, which are located on opposite sides of the valve plate 5. The baffles 9 limit the valve plate 5 of the left air vent 13 and the right air vent 14 to prevent excessive opening and closing.

[0046] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A four-ventilation valve, characterized in that: This includes the valve body, actuator, valve stem, connecting rod assembly, and valve plate; The valve body has an upper air inlet, a lower air inlet, a left air inlet, and a right air inlet; The downwind vent, left vent, and right vent are all rotatably connected to valve plates via valve stems; The actuator is located on the rear side of the valve body; The rear end of the valve stem at the downwind outlet extends out of the valve body and connects to the actuator; The front end of all the valve stems extends out of the valve body and connects to the connecting rod assembly.

2. The four-ventilation valve according to claim 1, characterized in that: The linkage assembly includes a first link, a first elastic element, a second elastic element, and a second link; The first connecting rod and the second connecting rod are arranged in a front-to-back configuration. The front end of the valve stem at the downwind outlet has a first transmission block and a second transmission block. One end of the first connecting rod is connected to the valve stem of the lower air outlet via a first transmission block, and the other end of the first connecting rod is fixedly connected to the valve stem of the left air outlet. The left end of the first elastic element is connected to the left air vent, the right end of the first elastic element is connected to the first connecting rod, and the first elastic element is located in front of the left air vent. One end of the second connecting rod is connected to the valve stem of the lower air outlet via a second transmission block, and the other end of the second connecting rod is fixedly connected to the valve stem of the right air outlet. The right end of the second elastic element is connected to the right air vent, the left end of the second elastic element is connected to the second connecting rod, and the second elastic element is located in front of the right air vent.

3. The four-ventilation valve according to claim 2, characterized in that: The first connecting rod includes a first connecting arm, a second connecting arm, a third connecting arm, a first pin, and a second pin; One end of the first connecting arm has a first arc-shaped groove, and the first transmission block extends into the first arc-shaped groove; The other end of the first connecting arm is hinged to one end of the second connecting arm via a first pin; The other end of the second connecting arm is hinged to one end of the third connecting arm via a second pin; The other end of the third connecting arm is fixedly connected to the valve stem of the left air outlet; The right end of the first elastic element is connected to the second pin. In the initial state, the first elastic element is in a contracted state, and the first transmission block abuts against the left end wall of the first arc-shaped groove.

4. The four-ventilation valve according to claim 3, characterized in that: The second connecting rod includes a fourth connecting arm, a fifth connecting arm, a sixth connecting arm, a third pin, and a fourth pin; One end of the fourth connecting arm has a second arc-shaped groove, and the second transmission block extends into the second arc-shaped groove; The other end of the fourth connecting arm is hinged to one end of the fifth connecting arm via a third pin. The other end of the fifth connecting arm is hinged to one end of the sixth connecting arm via a fourth pin. The other end of the sixth connecting arm is fixedly connected to the valve stem of the right air outlet; The left end of the second elastic element is connected to the fourth pin. In the initial state, the second elastic element is in a stretched state, and the second transmission block abuts against the left end wall of the second arc-shaped groove.

5. The four-ventilation valve according to claim 2, characterized in that: Both the first elastic element and the second elastic element are springs.

6. The four-ventilation valve according to claim 1, characterized in that: The cross-sections of the upwind, downwind, left wind, and right wind inlets are circular or square.

7. The four-ventilation valve according to claim 1, characterized in that: The actuator is an electric actuator, a pneumatic actuator, or a hydraulic actuator.

8. The four-ventilation valve according to claim 1, characterized in that: It also includes a PLC controller; The actuator is electrically connected to the PLC controller.

9. The four-ventilation valve according to claim 4, characterized in that: The arc of both the first and second arc grooves is 90°.

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