Air volume regulating valve with good sealing

Abstract

The utility model discloses a good air volume regulating valve of sealing, wherein including valve body, the inside of valve body is provided with baffle, and is connected with the pivot on the baffle, the pivot penetrates valve body, and can rotate in the penetration hole of valve body, the front fixedly connected with valve stem of pivot, the outside of valve body is provided with locking mechanism, the locking mechanism includes arc plate, fixed link, connecting block, first spring and clamping groove, the clamping groove is set up in the front of arc plate, the fixed link penetrates valve stem and is connected with valve stem slidingly, the utility model drives fixed link to remove the clamping groove to remove the restriction of valve stem by pulling connecting block, can rotate valve stem and drive baffle to rotate, reaches the purpose of adjusting valve body opening, after rotating a certain angle valve stem, inserts fixed link into corresponding clamping groove, can lock valve stem to avoid the rotation of valve stem and influence the air intake, and when adjusting, only need to pull connecting block to rotate valve stem, and the operation is simple and convenient.

Description

Technical Field

[0001] This utility model belongs to the field of air volume regulating valve technology, specifically relating to an air volume regulating valve with good sealing performance. Background Technology

[0002] In my country's building electromechanical construction field, especially in building ventilation systems, air volume regulating valves are required to control and regulate air volume. Whether in air conditioning supply and exhaust systems, medical purification air conditioning systems, or smoke prevention and exhaust systems, if the air valves are not properly sealed, problems such as air leakage and cross-flow can occur. These problems not only result in a loss of system air volume and wasted energy, but may also cause polluted or harmful gases in the medical environment to cross into wards or even operating rooms, posing a serious threat to people's health.

[0003] According to Chinese Patent Publication No. CN222668939U, a well-sealed airflow regulating valve includes a valve body. An air duct is provided inside the valve body, with connecting flanges at both ends. The two ends of a linkage shaft of a blade are rotatably connected to the inside of the air duct via couplings. A valve handle is fixedly connected to the top end of the linkage shaft. A locking mechanism is provided between the valve handle and the valve body. Blade baffles are fixedly connected to the inner walls of both sides of the air duct. Baffle grooves that mate with the blade baffles are provided at both ends of the blades. A [missing information - likely a type of groove] is provided at the outer end of the baffle groove. The first sealing layer; the blade and the valve handle are parallel to the same vertical axis, and the blade is fixedly connected to the valve handle through the linkage shaft; this utility model can solve the problem of poor valve port sealing effect, resulting in loose closure; the above technology uses locking bolts to fix the valve stem, and the locking bolts need to be loosened when the valve stem needs to be rotated. Repeated tightening makes the operation inconvenient and affects the adjustment efficiency. Moreover, if the tightening degree is not sufficient, it may cause the valve stem to loosen, affecting the use effect of the air volume regulating valve. Therefore, an air volume regulating valve with good sealing performance is proposed to solve the above-mentioned problems. Utility Model Content

[0004] The purpose of this invention is to provide a well-sealed airflow regulating valve for existing devices, in order to solve the problems mentioned in the background art.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a well-sealed airflow regulating valve, comprising a valve body, a baffle plate is provided inside the valve body, and a rotating shaft is connected to the baffle plate. The rotating shaft passes through the valve body and can rotate within the through hole of the valve body. A valve stem is fixedly connected to the front end of the rotating shaft. A locking mechanism is provided outside the valve body. The locking mechanism includes an arc-shaped plate, a fixed rod, a connecting block, a first spring, and a slot. The slot is opened on the front side of the arc-shaped plate. The fixed rod passes through the valve stem and is slidably connected to the valve stem, and its rear end is inserted into the inside of the slot. The connecting block is fixedly connected to the front end of the fixed rod. The first spring is sleeved on the outer wall of the fixed rod, and the two ends of the first spring are fixedly connected to the back side of the connecting block and the front side of the valve stem, respectively.

[0006] The present invention further describes that an arc-shaped sealing strip is fixedly connected to the inner wall of the valve body, and there are two baffles and two arc-shaped sealing strips. The two baffles are fixedly connected to the left and right sides of the rotating shaft, and the two arc-shaped sealing strips are respectively set at the top and bottom of the baffles.

[0007] The present invention further describes that the arc-shaped plate is fixedly installed on the front of the valve body by a round rod, and an arc-shaped guide hole is provided on the outer wall of the arc-shaped plate. A slider is fixedly connected to the back of the valve stem, and the slider is rotatably connected inside the arc-shaped guide hole.

[0008] This utility model further illustrates that a limiting mechanism is provided on the front of the valve stem. The limiting mechanism includes an insert rod, a movable rod, a connecting plate, and a sliding rod. A circular groove is provided at the bottom of the connecting block. The top of the insert rod is inserted into the inside of the circular groove, and its bottom is fixedly connected to the top of the movable rod. The connecting plate is fixedly connected to the front of the valve stem, and the sliding rod is fixedly connected to the front of the connecting plate. A rectangular groove is provided on the right side of the sliding rod, and the left end of the movable rod is slidably connected to the inside of the rectangular groove.

[0009] The present invention further describes that a limiting rod is fixedly connected inside the rectangular groove, the limiting rod passes through the movable rod and is slidably connected to the movable rod, and a second spring is sleeved on the outer wall of the limiting rod, and the two ends of the second spring are fixedly connected to the top of the movable rod and the top of the inner wall of the rectangular groove, respectively.

[0010] The present invention further illustrates that the slide rod is slidably connected to a limiting block, the bottom of the limiting block is fixedly connected to a paddle, one end of a third spring is fixedly connected to the outer wall of the paddle, and the other end of the third spring is fixedly connected to the left outer wall of the slide rod.

[0011] Compared with the prior art, the beneficial effects achieved by this utility model are: This utility model,

[0012] 1. This well-sealed airflow regulating valve releases the valve stem by pulling the connecting block to disengage the fixing rod from the slot. This allows the valve stem to rotate, causing the baffle to rotate and thus adjusting the valve body opening. After rotating the valve stem at a certain angle, inserting the fixing rod into the corresponding slot locks the valve stem, preventing rotation and ensuring airflow. Adjustment is simple and convenient; simply pulling the connecting block rotates the valve stem.

[0013] 2. This well-sealed airflow regulating valve can fix the connecting block by inserting the plug rod into the inside of the circular groove, so that the fixing rod is stably inserted into the inside of the slot. Pulling down the movable rod can drive the plug rod out of the circular groove, thereby releasing the connection block from its restriction, and then pulling the connection block can drive the fixing rod out of the slot.

[0014] 3. This well-sealed airflow regulating valve, by pulling down the movable rod to press the limiting block, the limiting block moves to the left under pressure without blocking the movable rod from moving down until the movable rod is pulled down to the bottom of the limiting block. The limiting block is then reset under the action of the third spring to block the movable rod, preventing the second spring from driving the movable rod to reset, thus keeping the insert rod in the state of being detached from the circular groove, and thus eliminating the need to keep pulling the movable rod. Attached Figure Description

[0015] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the locking mechanism of this utility model;

[0018] Figure 3 This is a schematic diagram of the limiting mechanism of this utility model;

[0019] Figure 4 This is a front sectional view of the slide bar of this utility model;

[0020] Figure 5 This is a schematic diagram of the internal structure of the valve body of this utility model.

[0021] In the diagram: 1. Valve body; 2. Rotating shaft; 3. Baffle plate; 4. Valve stem; 5. Locking mechanism; 51. Arc-shaped plate; 52. Arc-shaped guide hole; 53. Slider; 54. Fixed rod; 55. Connecting block; 56. First spring; 57. Slot; 6. Arc-shaped sealing strip; 7. Limiting mechanism; 71. Insert rod; 72. Movable rod; 73. Connecting plate; 74. Slide rod; 75. Limiting rod; 76. Second spring; 77. Limiting block; 78. Paddle; 79. Third spring. Detailed Implementation

[0022] The following detailed, non-limiting description of the present invention, in conjunction with preferred embodiments and accompanying drawings, is provided. Obviously, the described embodiments are merely some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0023] Please see Figure 1-5 The present invention provides a technical solution: a well-sealed airflow regulating valve, comprising a valve body 1, a baffle 3 inside the valve body 1, and a rotating shaft 2 connected to the baffle 3. The rotating shaft 2 passes through the valve body 1 and can rotate within the through hole of the valve body 1. A valve stem 4 is fixedly connected to the front end of the rotating shaft 2. A locking mechanism 5 is provided outside the valve body 1. The locking mechanism 5 includes an arc plate 51, a fixing rod 54, a connecting block 55, a first spring 56, and a slot 57. The slot 57 is opened on the front side of the arc plate 51. The fixing rod 54 passes through the valve stem 4 and is slidably connected to the valve stem 4, and its rear end is inserted into the inside of the slot 57. The connecting block 55 is fixedly connected to the front end of the fixing rod 54. The first spring 56 is sleeved on the outer wall of the fixing rod 54, and the two ends of the first spring 56 are fixedly connected to the back side of the connecting block 55 and the front side of the valve stem 4, respectively.

[0024] Specifically, by pulling the connecting block 55 to disengage the fixing rod 54 from the slot 57, the restriction on the valve stem 4 can be released. Then, the valve stem 4 can be rotated to rotate the baffle 3, thereby adjusting the opening of the valve body 1. After rotating the valve stem 4 at a certain angle, the fixing rod 54 can be inserted into the corresponding slot 57 to lock the valve stem 4, thus preventing the valve stem 4 from rotating and affecting the air intake. Moreover, during adjustment, only the connecting block 55 needs to be pulled to rotate the valve stem 4, making the operation simple and convenient.

[0025] In this embodiment, an arc-shaped sealing strip 6 is fixedly connected to the inner wall of the valve body 1. There are two baffles 3 and two arc-shaped sealing strips 6. The two baffles 3 are fixedly connected to the left and right sides of the rotating shaft 2, and the two arc-shaped sealing strips 6 are respectively set at the top and bottom of the baffles 3.

[0026] Specifically, by setting an arc-shaped sealing strip 6, the sealing performance of the baffle 3 can be improved. The arc-shaped sealing strip 6 has a certain elasticity, so that when the baffle 3 seals the valve body 1, the baffle 3 and the arc-shaped sealing strip 6 abut against each other, thereby improving the sealing effect.

[0027] In this embodiment, the arc plate 51 is fixedly installed on the front of the valve body 1 by a round rod. An arc guide hole 52 is provided on the outer wall of the arc plate 51. A slider 53 is fixedly connected to the back of the valve stem 4, and the slider 53 is rotatably connected inside the arc guide hole 52.

[0028] Specifically, there are two round rods, and because the outer wall of the valve body 1 is curved, the round rods are installed in different positions, so their lengths are different. The round rods are installed on the outer wall of the valve body 1, thereby fixing the arc plate 51 to the front of the valve body 1. By setting the arc guide hole 52 and the slider 53, the valve rod 4 can be guided to rotate stably.

[0029] In this embodiment, a limiting mechanism 7 is provided on the front of the valve stem 4. The limiting mechanism 7 includes an insert rod 71, a movable rod 72, a connecting plate 73, and a sliding rod 74. A circular groove is provided at the bottom of the connecting block 55. The top of the insert rod 71 is inserted into the inside of the circular groove, and the bottom is fixedly connected to the top of the movable rod 72. The connecting plate 73 is fixedly connected to the front of the valve stem 4, and the sliding rod 74 is fixedly connected to the front of the connecting plate 73. A rectangular groove is provided on the right side of the sliding rod 74. The left end of the movable rod 72 is slidably connected to the inside of the rectangular groove. A limiting rod 75 is fixedly connected inside the rectangular groove. The limiting rod 75 passes through the movable rod 72 and is slidably connected to the movable rod 72. A second spring 76 is sleeved on the outer wall of the limiting rod 75, and the two ends of the second spring 76 are fixedly connected to the top of the movable rod 72 and the top of the inner wall of the rectangular groove, respectively.

[0030] Specifically, by inserting the insert rod 71 into the inside of the circular groove, the connecting block 55 can be fixed, thereby allowing the fixing rod 54 to be stably inserted into the inside of the slot 57. Pulling down the movable rod 72 can drive the insert rod 71 out of the circular groove, thereby releasing the connection block 55 from its restriction, and then pulling the connection block 55 can drive the fixing rod 54 out of the slot 57.

[0031] In this embodiment, the slide rod 74 is slidably connected to the limiting block 77, the bottom of the limiting block 77 is fixedly connected to the paddle 78, one end of the third spring 79 is fixedly connected to the outer wall of the paddle 78, and the other end of the third spring 79 is fixedly connected to the left outer wall of the slide rod 74.

[0032] Specifically, the limiting block 77 has an inclined surface at the top of one end inside the rectangular groove, which allows the movable rod 72 to move down and press against the limiting block 77. The limiting block 77 can move to the left. The bottom left end of the movable rod 72 has an arc surface, which facilitates the movable rod 72 pressing against the inclined surface of the limiting block 77. By pulling the movable rod 72 down and pressing against the limiting block 77, the limiting block 77 moves to the left under pressure without blocking the movable rod 72 from moving down. Until the movable rod 72 is pulled down to the bottom of the limiting block 77, the limiting block 77 resets under the action of the third spring 79 and blocks the movable rod 72, preventing the second spring 76 from driving the movable rod 72 to reset. This keeps the insertion rod 71 in a state of being detached from the circular groove, so that the movable rod 72 does not need to be pulled continuously.

[0033] It is worth noting that all the technologies not described in the above manual are existing technologies and are not the main innovations, so they will not be described in detail here.

[0034] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and 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. Therefore, they should not be construed as limitations on this utility model.

[0035] Finally, it should be noted that 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 well-sealed airflow regulating valve, comprising a valve body (1), characterized in that: The valve body (1) is provided with a baffle (3) inside, and a rotating shaft (2) is connected to the baffle (3). The rotating shaft (2) passes through the valve body (1) and can rotate in the through hole of the valve body (1). The front end of the rotating shaft (2) is fixedly connected to the valve stem (4). The valve body (1) is provided with a locking mechanism (5) outside. The locking mechanism (5) includes an arc plate (51), a fixing rod (54), a connecting block (55), a first spring (56), and a slot (57). The slot (57) is opened on the front side of the arc plate (51). The fixing rod (54) passes through the valve stem (4) and is slidably connected to the valve stem (4). The rear end is inserted into the inside of the slot (57). The connecting block (55) is fixedly connected to the front end of the fixing rod (54). The first spring (56) is sleeved on the outer wall of the fixing rod (54). The two ends of the first spring (56) are fixedly connected to the back side of the connecting block (55) and the front side of the valve stem (4), respectively. The valve stem (4) is provided with a limiting mechanism (7) on the front side. The limiting mechanism (7) includes a plug rod (71), a movable rod (72), a connecting plate (73), and a sliding rod (74). The bottom of the connecting block (55) is provided with a circular groove. The top of the plug rod (71) is inserted into the inside of the circular groove, and the bottom is fixedly connected to the top of the movable rod (72). The connecting plate (73) is fixedly connected to the front side of the valve stem (4). The sliding rod (74) is fixedly connected to the front side of the connecting plate (73). The right side of the sliding rod (74) is provided with a rectangular groove. The left end of the movable rod (72) is slidably connected to the inside of the rectangular groove.

2. The clean air damper of claim 1, wherein: The inner wall of the valve body (1) is fixedly connected with an arc-shaped sealing strip (6). There are two baffles (3) and two arc-shaped sealing strips (6). The two baffles (3) are fixedly connected to the left and right sides of the rotating shaft (2), and the two arc-shaped sealing strips (6) are respectively set at the top and bottom of the baffles (3).

3. The clean air damper of claim 1, wherein: The arc plate (51) is fixedly installed on the front of the valve body (1) by a round rod. An arc guide hole (52) is provided on the outer wall of the arc plate (51). A slider (53) is fixedly connected to the back of the valve stem (4), and the slider (53) is rotatably connected inside the arc guide hole (52).

4. The air volume regulating valve with good sealing performance according to claim 1, characterized in that: A limiting rod (75) is fixedly connected inside the rectangular groove. The limiting rod (75) passes through the movable rod (72) and is slidably connected to the movable rod (72). A second spring (76) is sleeved on the outer wall of the limiting rod (75), and the two ends of the second spring (76) are fixedly connected to the top of the movable rod (72) and the top of the inner wall of the rectangular groove, respectively.

5. The air volume regulating valve with good sealing performance according to claim 4, characterized in that: The slide rod (74) is slidably connected to the limit block (77), and the bottom of the limit block (77) is fixedly connected to the paddle (78). The outer wall of the paddle (78) is fixedly connected to one end of the third spring (79), and the other end of the third spring (79) is fixedly connected to the left outer wall of the slide rod (74).

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