Baffle type vacuum valve

Abstract

The utility model provides a baffle type vacuum valve which comprises a valve body, an operating rod is arranged at the top of the valve body, a movable cavity is formed in the top of the inner wall of the valve body, containing grooves are formed in the two sides of the inner wall of the movable cavity, sliding grooves are formed in the two sides of the inner wall of each containing groove, a movable plate is slidably connected into the sliding grooves, and a pressing plate is fixedly installed on one side of the movable plate. The operating rod is movably connected to the middle of the pressing plate, top plates are arranged on the two sides of the top of the operating rod, a damping rod is hinged to the bottom of the movable plate, a clamping plate is hinged to one end of the damping rod, and one end of the clamping plate is hinged to one side of the bottom of the containing groove. After the sealing plug is completely plugged into the valve cavity, the bottom of the clamping plate abuts against the two sides of the top of the sealing plug, downward extrusion force is formed, the sealing plug is abutted through the clamping plate, and the situation that the sealing plug is jacked up by air pressure in the valve cavity, a gap occurs at the blocked end, and liquid leakage is caused is avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of valves, and in particular relates to a baffle type vacuum valve. Background Art

[0002] When the existing baffle vacuum valve is closed, the valve has a poor sealing effect, which causes the valve output end to easily leak gas or liquid into the valve cavity after being closed by the valve plug. Among them, the "a baffle type vacuum valve" disclosed in the application number "CN201921488045.2" is also an increasingly mature technology. The purpose of good sealing effect is achieved by providing a connecting port, a sealing ring and a valve plate. The existing device has a poor sealing effect, which causes water leakage or air leakage during use. Therefore, when in use, a sealing ring is embedded in the connecting port, and the sealing ring is stepped. Multiple sealings are achieved through the steps, thereby achieving the purpose of good sealing effect. However, the device also has the following defects: after the valve stem pushes the valve plug to block the output end of the valve body, the extrusion force of the valve stem is insufficient, and the pressure at the bottom easily causes the valve plug to move slightly upward, causing the valve stem to rebound upward, and the sealing performance is not high, causing the blocked end of the valve plug to loosen, resulting in liquid leakage. Utility Model Content

[0003] The utility model aims to provide a baffle type vacuum valve, aiming to solve the problem in the prior art that after the valve stem pushes the valve plug to block the output end of the valve body, the extrusion force of the valve stem is insufficient, the pressure at the bottom easily causes the valve plug to move slightly upward, causing the valve stem to rebound upward, and the airtightness is not high, resulting in the loosening of the blocking end of the valve plug and causing liquid leakage.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solution: it includes a valve body, an operating rod is provided on the top of the valve body, an active cavity is opened on the top of the inner wall of the valve body, storage grooves are opened on both sides of the inner wall of the active cavity, sliding grooves are opened on both sides of the inner wall of the storage groove, a movable plate is slidably connected in the sliding groove, a pressure plate is fixedly installed on one side of the movable plate, the operating rod is movably connected to the middle part of the pressure plate, top plates are provided on both sides of the top of the operating rod, a damping rod is hingedly connected to the bottom of the movable plate, one end of the damping rod is hingedly connected to a clamping plate, and one end of the clamping plate is hinged to one side of the bottom of the storage groove.

[0005] In an implementation scheme of a baffle-type vacuum valve of the utility model, a sealing plug is fixedly installed at the bottom of the operating rod, a valve cavity is provided at the bottom of the inner wall of the valve body, and the sealing plug is movably connected to the inner wall of the valve cavity.

[0006] In this solution, the pressure plate is pressed downward by the operating rod, and the operating rod presses the sealing plug downward to completely block the top of the valve cavity. The top plate presses the pressure plate, and the pressure plate drives the movable plate to move in the slide groove. At the same time, as the movable plate moves downward, the damping rod is squeezed and squeezes the card plate downward. When the sealing plug is completely inserted into the valve cavity, the bottom of the card plate presses against the two sides of the top of the sealing plug, forming a downward squeezing force, and the sealing plug is pressed through the card plate.

[0007] In an implementation scheme of a baffle type vacuum valve of the utility model, a valve stem is provided at the bottom of the sealing plug, a sealing plate is provided at the bottom of the valve stem, and a valve plug is provided at the bottom of the sealing plate.

[0008] In this solution, as the sealing plug moves, the valve stem is driven to move downward and cover the connecting groove with a sealing plug to prevent liquid leakage.

[0009] In an implementation scheme of a baffle type vacuum valve of the utility model, the connecting ends of the damping rod, the clamping plate and the movable plate are all provided with torsion springs.

[0010] In this solution, when the operating rod is lifted upward, the top plate moves upward. At this time, under the rebound action of the torsion spring and the damping rod, the damping rod and the clamping plate retract into the storage groove and lift the moving plate in the slide groove, putting the contact clamping plate into a squeezed state on the sealing plug.

[0011] In an implementation scheme of a baffle type vacuum valve of the utility model, a connecting groove is provided at the bottom of the valve body, a stepped groove is provided at the top of the inner wall of the connecting groove, and the stepped groove matches the sealing plate.

[0012] In this solution, when the sealing plate blocks the connecting groove, the sealing plate and the stepped groove squeeze each other, and after the valve plug blocks the connecting groove, the sealing plate blocks the top of the connecting groove to prevent liquid leakage and improve the sealing degree.

[0013] In an implementation scheme of a baffle type vacuum valve of the utility model, a sealing ring is provided on the bottom side of the sealing plate.

[0014] In this solution, after the sealing plate blocks the connecting groove, the sealing ring is used to block the gap between the stepped groove and the sealing plate to improve the sealing performance.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] 1) The operating rod is used to press the pressure plate downward, and the operating rod presses the sealing plug downward to completely block the top of the valve cavity. The top plate presses the pressure plate, and the pressure plate drives the movable plate to move in the slide groove. At the same time, as the movable plate moves downward, the damping rod is squeezed and squeezes the card plate downward. When the sealing plug is completely inserted into the valve cavity, the bottom of the card plate presses against the two sides of the top of the sealing plug to form a downward squeezing force, and the sealing plug is pressed by the card plate to prevent the air pressure in the valve cavity from lifting the sealing plug, causing a gap at the blocked end to cause liquid leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0018] Figure 1 It is a schematic diagram of the structure of the utility model;

[0019] Figure 2 It is a schematic diagram of the structure of B of the utility model;

[0020] Figure 3 This is a schematic diagram of the structure of point A of the present utility model.

[0021] In the figure: 1. valve body; 2. operating lever; 3. movable chamber; 4. storage groove; 5. slide groove; 6. movable plate; 7. pressure plate; 8. top plate; 9. damping rod; 91. clamping plate; 10. sealing plug; 11. valve chamber; 12. valve stem; 13. sealing plate; 14. valve plug; 15. connecting groove; 16. stepped groove; 17. sealing ring. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] See also Figure 1 - Figure 3 The utility model provides the following technical solutions: a baffle type vacuum valve, comprising a valve body 1, an operating rod 2 is provided on the top of the valve body 1, an active cavity 3 is opened on the top of the inner wall of the valve body 1, storage grooves 4 are opened on both sides of the inner wall of the active cavity 3, slide grooves 5 are opened on both sides of the inner wall of the storage groove 4, a movable plate 6 is slidably connected in the slide groove 5, a pressure plate 7 is fixedly installed on one side of the movable plate 6, the operating rod 2 is movably connected to the middle of the pressure plate 7, top plates 8 are provided on both sides of the top of the operating rod 2, a damping rod 9 is hinged at the bottom of the movable plate 6, one end of the damping rod 9 is hinged to a card plate 91, and one end of the card plate 91 is hinged to one side of the bottom of the storage groove 4.

[0024] For a specific embodiment of a baffle type vacuum valve, please refer to Figure 1 A sealing plug 10 is fixedly installed at the bottom of the operating rod 2, a valve cavity 11 is provided at the bottom of the inner wall of the valve body 1, and the sealing plug 10 is movably connected to the inner wall of the valve cavity 11.

[0025] See also Figure 1: The operating rod 2 is used to press the pressure plate 7 downward, and the operating rod 2 presses the sealing plug 10 downward to completely block the top of the valve cavity 11. The top plate 8 presses the pressure plate 7, and the pressure plate 7 drives the movable plate 6 to move in the slide groove 5. At the same time, as the movable plate 6 moves downward, the damping rod 9 is squeezed and squeezes the clamping plate 91 downward. When the sealing plug 10 is completely inserted into the valve cavity 11, the bottom of the clamping plate 91 presses against the two sides of the top of the sealing plug 10 to form a downward squeezing force, and the sealing plug 10 is pressed by the clamping plate 91 to prevent the air pressure in the valve cavity 11 from lifting the sealing plug 10.

[0026] For a specific embodiment of a baffle type vacuum valve, please refer to Figure 1 A valve stem 12 is provided at the bottom of the sealing plug 10, a sealing plate 13 is provided at the bottom of the valve stem 12, and a valve plug 14 is provided at the bottom of the sealing plate 13.

[0027] See also Figure 1 : As the sealing plug 10 moves, the valve stem 12 is driven to move downward and cover the connecting groove 15 to prevent liquid leakage.

[0028] For a specific embodiment of a baffle type vacuum valve, please refer to Figure 1 : The connecting ends of the damping rod 9, the clamping plate 91 and the movable plate 6 are all provided with torsion springs.

[0029] See also Figure 1 : When the operating rod 2 is lifted upward, the top plate 8 moves upward. At this time, under the rebound effect of the torsion spring and the damping rod 9, the damping rod 9 and the clamping plate 91 retract into the storage groove 4 and lift the moving plate 6 in the slide groove 5, and the contact clamping plate 91 is in a squeezed state against the sealing plug 10.

[0030] For a specific embodiment of a baffle type vacuum valve, please refer to Figure 3 A connecting groove 15 is provided at the bottom of the valve body 1 , and a stepped groove 16 is provided at the top of the inner wall of the connecting groove 15 , and the stepped groove 16 matches the sealing plate 13 .

[0031] See also Figure 3 When the sealing plate 13 blocks the connecting groove 15, the sealing plate 13 and the stepped groove 16 squeeze each other. After the valve plug 14 blocks the connecting groove 15, the sealing plate 13 blocks the top of the connecting groove 15 to prevent liquid leakage and improve the sealing degree.

[0032] For a specific embodiment of a baffle type vacuum valve, please refer to Figure 3 A sealing ring 17 is arranged on the bottom side of the sealing plate 13 .

[0033] See also Figure 3 When the sealing plate 13 blocks the connecting groove 15, the sealing ring 17 is used to block the gap between the stepped groove 16 and the sealing plate 13 to improve the sealing performance.

[0034] The utility model provides a baffle type vacuum valve. The specific usage method is: the operating rod 2 is used to press the pressure plate 7 downward, and the operating rod 2 presses the sealing plug 10 downward to completely block the top of the valve cavity 11. The top plate 8 presses the pressure plate 7, and the pressure plate 7 drives the movable plate 6 to move in the slide groove 5. At the same time, as the movable plate 6 moves downward, the damping rod 9 is squeezed and squeezes the clamping plate 91 downward. When the sealing plug 10 is completely inserted into the valve cavity 11, the bottom of the clamping plate 91 presses against the two sides of the top of the sealing plug 10 to form a downward squeezing force, and the sealing plug 10 is pressed by the clamping plate 91 to prevent the air pressure in the valve cavity 11 from lifting the sealing plug 10. As the sealing plug 10 moves, it drives The valve stem 12 moves downward and covers the connecting groove 15 to prevent liquid leakage. When the sealing plate 13 blocks the connecting groove 15, the sealing plate 13 and the stepped groove 16 squeeze each other. After the valve plug 14 blocks the connecting groove 15, the sealing plate 13 blocks the top of the connecting groove 15 to prevent liquid leakage and improve the sealing degree. When the operating rod 2 is lifted upward, the top plate 8 moves upward. At this time, under the rebound action of the torsion spring and the damping rod 9, the damping rod 9 and the card plate 91 retract into the receiving groove 4 and lift the moving plate 6 in the slide groove 5, which will contact the card plate 91 to squeeze the sealing plug 10. At the same time, the valve plug 14 opens the connecting groove 15 to allow the liquid to flow in the valve cavity 11.

[0035] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A flapper type vacuum valve, comprising a valve body (1), characterized in that: An operating rod (2) is provided at the top of the valve body (1); an active cavity (3) is provided at the top of the inner wall of the valve body (1); receiving grooves (4) are provided on both sides of the inner wall of the active cavity (3); sliding grooves (5) are provided on both sides of the inner wall of the receiving groove (4); a movable plate (6) is slidably connected in the sliding groove (5); a pressure plate (7) is fixedly installed on one side of the movable plate (6); the operating rod (2) is movably connected to the middle part of the pressure plate (7); top plates (8) are provided on both sides of the top of the operating rod (2); a damping rod (9) is hinged at the bottom of the movable plate (6); one end of the damping rod (9) is hinged to a clamping plate (91); one end of the clamping plate (91) is hinged to one side of the bottom of the receiving groove (4).

2. A baffle type vacuum valve according to claim 1, characterized in that: A sealing plug (10) is fixedly mounted on the bottom of the operating rod (2), a valve cavity (11) is provided at the bottom of the inner wall of the valve body (1), and the sealing plug (10) is movably connected to the inner wall of the valve cavity (11).

3. A baffle type vacuum valve according to claim 2, characterized in that: A valve stem (12) is provided at the bottom of the sealing plug (10), a sealing plate (13) is provided at the bottom of the valve stem (12), and a valve plug (14) is provided at the bottom of the sealing plate (13).

4. The baffle type vacuum valve according to claim 1, characterized in that: The connecting ends of the damping rod (9), the clamping plate (91) and the movable plate (6) are all provided with torsion springs.

5. The baffle type vacuum valve according to claim 3, characterized in that: A connecting groove (15) is provided at the bottom of the valve body (1), and a stepped groove (16) is provided at the top of the inner wall of the connecting groove (15), and the stepped groove (16) matches the sealing plate (13).

6. The baffle type vacuum valve according to claim 3, characterized in that: A sealing ring (17) is provided on the bottom side of the sealing plate (13).

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