Vertical check valve

Abstract

The utility model relates to a vertical check valve which comprises a valve body, a mounting plate is fixedly connected to the position, close to the upper end, of the inner wall of the valve body, a through hole is formed in the middle of the mounting plate, movable grooves are formed in the left side and the right side of the interior of the mounting plate, the movable grooves are communicated with the through hole, and valve plates are movably connected in the two movable grooves in a sleeved mode. Through the arrangement of the mounting plate, the through hole, the movable groove, the valve plates, the connecting plate, the fixed plate, the connecting rod, the push block and the spring, the two valve plates can move towards each other or away from each other, so that circulation of water flow in the through hole is opened and closed, opening and closing of the valve plates are simple, and the device is low in valve opening pressure, high in practicability and convenient to use. Through the arrangement of a fixing rod, a connecting pipe, a rotating rod, a baffle, a connecting block, a connecting sliding shaft, a limiting rod, a sliding groove, a mounting groove, a rotating shaft and a gear, the positions of the two valve plates can be fixed after the two valve plates are closed, the stability of the valve plates is improved, and the sealing effect of the device is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of check valves, in particular to a vertical check valve. Background Art

[0002] A check valve is a valve that has a circular disc as the opening and closing part and blocks the backflow of the medium by its own weight and the pressure of the medium. It is an automatic valve and is also called a non-return valve, a one-way valve, a reflux valve or an isolation valve. The disc movement mode is divided into lift type and swing type. The lift check valve is similar to the stop valve in structure, except that it lacks the valve stem that drives the disc. The medium flows in from the inlet end (lower side) and flows out from the outlet end (upper side). When the inlet pressure is greater than the sum of the disc weight and its flow resistance, the valve is opened.

[0003] The check valve in the commonly used vertical pipeline has a large fluid resistance coefficient and a loose seal, which leads to leakage in the pipeline and cannot maintain the pressure of the flowing medium in the pipeline. In addition, the opening pressure of the check valve is generally between several kilopascals and tens of kilopascals, and the opening pressure is high. Utility Model Content

[0004] The purpose of the utility model is to provide a vertical check valve to solve the problems mentioned in the above background technology.

[0005] The technical solution of the utility model is a vertical check valve, comprising a valve body, wherein an inner wall of the valve body is fixedly connected to a mounting plate near the upper end, a through hole is opened in the middle of the mounting plate, and movable grooves are opened on the left and right sides of the inside of the mounting plate, the movable groove is connected to the through hole, valve plates are movably sleeved in the two movable grooves, one end of the valve plate passes through the through hole, the surface of the valve plate is fitted with the through hole, the facing surfaces of the two valve plates are fitted with the through hole, and the sides close to the bottom surfaces of the two valve plates are fixedly connected with a connecting plate, the inner wall of the valve body is fixedly connected to a fixing plate near the middle, a connecting rod is movably sleeved in the middle of the fixing plate, and a push block is fixedly connected to the top surface of the connecting rod, and the facing surfaces of the two connecting plates near the top and the left and right sides of the top surface of the push block are inclined surfaces, and the inclined surfaces of the two connecting plates are respectively fitted with the two inclined surfaces at the top of the push block.

[0006] In one embodiment, a spring is fixedly connected to one side of the two movable grooves away from the through hole, and one end of the spring is fixedly connected to the valve plate.

[0007] In one embodiment, the right side of the valve body is fixedly sleeved with a connecting pipe, the left side of the right connecting plate is fixedly connected with a fixing rod, the right end of the fixing rod is movably sleeved in the connecting pipe and passes through to the outside of the valve body, the right side bearing on the surface of the valve body is connected with a rotating rod, the rotating rod is arranged directly above the fixing rod, the right end of the surface of the rotating rod is fixedly sleeved with a baffle, and the left side of the baffle is in contact with the right end surface of the fixing rod.

[0008] In one embodiment, the top surfaces of the two valve plates are fixedly connected with connecting blocks, the front surfaces of the two connecting blocks are fixedly connected with connecting sliding shafts, the front sides of the two connecting blocks are provided with limiting rods, the limiting rods are inclined, and the front surfaces of the two limiting rods are provided with sliding grooves, and the connecting sliding shafts are slidably connected in the sliding grooves.

[0009] In one embodiment, the facing ends of the two limiting rods are provided with mounting grooves, and the front ends of the two limiting rods that are close to each other are movably sleeved with a rotating shaft, the front ends of the two rotating shafts are connected to the front bearings of the inner wall of the valve body, and the rear ends of the rotating shafts pass through the mounting grooves, and the rear ends of the surfaces of the two mounting grooves are fixedly sleeved with gears, and the two gears are meshed with each other.

[0010] In one embodiment, a sealing ring is fixedly connected to the inner wall of the connecting pipe, the sealing ring is made of rubber, and the right end of the surface of the fixing rod is movably sleeved in the sealing ring.

[0011] In one embodiment, guide plates are fixedly connected to the left and right sides of the inner wall of the valve body near the upper end, and the two guide plates are symmetrically and tiltedly arranged. The guide plates are arranged below the connecting rod.

[0012] The beneficial effects provided by the utility model are:

[0013] 1. Through the arrangement of the mounting plate, through hole, movable groove, valve plate, connecting plate, fixed plate, connecting rod, push block and spring, the two valve plates can be moved toward or away from each other, thereby opening and closing the flow of water from the through hole. The opening and closing of the valve plate is simple, the valve opening pressure of the device is low, and the practicability is high.

[0014] 2. By setting the fixing rod, connecting pipe, rotating rod, baffle, connecting block, connecting sliding shaft, limiting rod, sliding groove, mounting groove, rotating shaft and gear, the position of the two valve plates can be fixed after they are closed, thereby improving the stability of the valve plates and enhancing the sealing effect of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is the main cross-sectional view of the utility model;

[0016] Figure 2 for Figure 1 A magnified view of the structure at center A;

[0017] Figure 3 This is the main cross-sectional view of the mounting plate;

[0018] Figure 4 It is a structural diagram of the connection block;

[0019] Figure 5This is the main cross-section of the limiting rod.

[0020] In the attached drawings, 1 is a valve body; 2 is a mounting plate; 3 is a through hole; 4 is a movable groove; 5 is a valve plate; 6 is a connecting plate; 7 is a fixed plate; 8 is a connecting rod; 9 is a push block; 10 is a spring; 11 is a fixed rod; 12 is a connecting pipe; 13 is a rotating rod; 14 is a baffle; 15 is a connecting block; 16 is a connecting slide shaft; 17 is a limiting rod; 18 is a slide groove; 19 is a mounting groove; 20 is a rotating shaft; 21 is a gear; 22 is a sealing ring; 23 is a guide plate. DETAILED DESCRIPTION

[0021] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present invention can be combined with each other. The technical solution of the present invention will be further described below in conjunction with the drawings of the embodiments of the present invention, and the present invention is not limited to the following specific implementation methods.

[0022] It should be understood that the same or similar numbers in the drawings of the embodiments correspond to the same or similar parts. In the description of the present utility model, it should be understood that if there are terms such as "upper", "lower", "front", "back", "left", "right", "top", "bottom" and the like indicating the orientation or positional relationship, they are based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as a limitation on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0023] In one embodiment, Figure 1-5 As shown, a vertical check valve comprises a valve body 1, an inner wall of the valve body 1 is fixedly connected with a mounting plate 2 near the upper end, a through hole 3 is opened in the middle of the mounting plate 2, movable grooves 4 are opened on the left and right sides inside the mounting plate 2, the movable grooves 4 are connected with the through hole 3, valve plates 5 are movably sleeved in two movable grooves 4, one end of the valve plate 5 passes through the through hole 3, the surface of the valve plate 5 fits with the through hole 3, the facing surfaces of the two valve plates 5 fit together, and the sides close to the bottom surfaces of the two valve plates 5 are fixedly connected with a connecting plate 6, the inner wall of the valve body 1 is located near the middle and fixedly connected with a fixing plate 7, a connecting rod 8 is movably sleeved in the middle of the fixing plate 7, and a push block 9 is fixedly connected to the top surface of the connecting rod 8, and the facing surfaces of the two connecting plates 6 near the top and the left and right sides of the top surface of the push block 9 are inclined surfaces, and the inclined surfaces of the two connecting plates 6 are respectively fitted with the two inclined surfaces at the top of the push block 9.

[0024] In order to automatically push the valve plate 5 out of the movable groove 4 , a spring 10 is fixedly connected to one side of the two movable grooves 4 away from the through hole 3 , and one end of the spring 10 is fixedly connected to the valve plate 5 .

[0025] In order to fix the position of the valve plate 5 on the right side, a connecting pipe 12 is fixedly sleeved on the right side of the valve body 1, and a fixing rod 11 is fixedly connected to the left side of the right connecting plate 6. The right end of the fixing rod 11 is movably sleeved in the connecting pipe 12 and passes through the outside of the valve body 1. A rotating rod 13 is connected to the right bearing on the surface of the valve body 1. The rotating rod 13 is arranged directly above the fixing rod 11. A baffle 14 is fixedly sleeved on the right end of the surface of the rotating rod 13, and the left side of the baffle 14 fits with the right end surface of the fixing rod 11.

[0026] In order to be able to synchronously fix the position of the valve plate 5 on the left side, improve the stability of the valve plate 5, and enhance the sealing effect of the device, the top surfaces of the two valve plates 5 are fixedly connected with connecting blocks 15, the front faces of the two connecting blocks 15 are fixedly connected with connecting sliding shafts 16, the front sides of the two connecting blocks 15 are provided with limiting rods 17, the limiting rods 17 are inclined, the front faces of the two limiting rods 17 are provided with sliding grooves 18, the connecting sliding shafts 16 are slidably connected in the sliding grooves 18, the facing ends of the two limiting rods 17 are provided with mounting grooves 19, the ends of the front faces of the two limiting rods 17 that are close to each other are movably sleeved with rotating shafts 20, the front ends of the two rotating shafts 20 are connected to the front side bearings of the inner wall of the valve body 1, the rear ends of the rotating shafts 20 penetrate into the mounting grooves 19, the rear ends of the surfaces of the two mounting grooves 19 are fixedly sleeved with gears 21, and the two gears 21 are meshed with each other.

[0027] In order to prevent water from seeping out from the connection between the fixing rod 11 and the connecting pipe 12 , a sealing ring 22 is fixedly connected to the inner wall of the connecting pipe 12 . The sealing ring 22 is made of rubber. The right end of the surface of the fixing rod 11 is movably sleeved in the sealing ring 22 .

[0028] In order to guide the water flow to impact the connecting rod 8 and increase the force of the water flow to push the connecting rod 8, guide plates 23 are fixedly connected to the left and right sides of the inner wall of the valve body 1 near the upper end. The two guide plates 23 are symmetrically inclined and are arranged below the connecting rod 8.

[0029] Working principle: When the utility model is used, first twist the rotating rod 13, and the rotating rod 13 rotates the baffle 14 to rotate, so that the left side of the rotating rod 13 does not conflict with the right end surface of the fixed rod 11, and then water enters from the lower end of the valve body 1, and the water flow can be guided to impact the connecting rod 8 through the guide plate 23, thereby increasing the impact force of water on the connecting rod 8. The water pushes the connecting rod 8 upward, and the connecting rod 8 drives the push block 9 to rise. The rise of the push block 9 will push the two connecting plates 6 to move away from the left and right sides, and the connecting plate 6 drives the valve plate 5 to move, so that the two valve plates 5 move toward the movable grooves 4 on the left and right sides respectively, thereby opening the through hole 3, so that the water flow can pass through the through hole 3. When closing the device, stop supplying water from the bottom to the inner valve body 1. At this time, the connecting rod 8 and the push block 9 will automatically drop due to the loss of push, and the spring 10 pushes the two valve plates 5 to move toward each other until The left side of the rotating rod 13 is fitted with the right end face of the fixed rod 11, thereby restricting the fixed rod 11, so that the fixed rod 11 cannot move to the right, and then the position of the valve plate 5 on the right is fixed, so that it cannot move to the right. When the valve plate 5 moves left and right, it will drive the limiting rod 17 on the same side to rotate, and when the limiting rod 17 rotates, it will drive the gear 21 to rotate. Since the two gears 21 are meshed with each other, when the gear 21 on the right side cannot rotate, the gear 21 on the left side cannot rotate either, then the valve plate 5 on the right side cannot move to the left, thereby improving the stability of the two valve plates 5 and improving the sealing effect of the valve plate 5 on the through hole 3.

[0030] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0031] The above embodiments only express several implementation methods of the utility model, and the descriptions are relatively specific and detailed, but they cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A vertical check valve, characterized in that: The cam is connected with the valve body by the spring, and the cam is connected with the valve stem by the spring, and the cam is connected with the valve stem through the cam.

2. A vertical check valve according to claim 1, characterized in that: A spring is fixedly connected to one side of the two movable grooves away from the through hole, and one end of the spring is fixedly connected to the valve plate.

3. A vertical check valve according to claim 1, characterized in that: The right side of the valve body is fixedly sleeved with a connecting pipe, the left side of the right connecting plate is fixedly connected with a fixing rod, the right end of the fixing rod is movably sleeved in the connecting pipe and passes through the outside of the valve body, the right side bearing on the surface of the valve body is connected with a rotating rod, the rotating rod is arranged directly above the fixing rod, the right end of the surface of the rotating rod is fixedly sleeved with a baffle, and the left side of the baffle is in contact with the right end surface of the fixing rod.

4. A vertical check valve according to claim 1, characterized in that: The top surfaces of the two valve plates are fixedly connected with connecting blocks, the front surfaces of the two connecting blocks are fixedly connected with connecting sliding shafts, the front sides of the two connecting blocks are provided with limiting rods, the limiting rods are inclined, and the front surfaces of the two limiting rods are provided with sliding grooves, and the connecting sliding shafts are slidably connected in the sliding grooves.

5. A vertical check valve according to claim 4, characterized in that: The facing ends of the two limiting rods are provided with mounting grooves, and the front ends of the two limiting rods that are close to each other are movably sleeved with a rotating shaft, the front ends of the two rotating shafts are connected to the front bearings of the inner wall of the valve body, and the rear ends of the rotating shafts pass through the mounting grooves, and the rear ends of the surfaces of the two mounting grooves are fixedly sleeved with gears, and the two gears are meshed with each other.

6. A vertical check valve according to claim 3, characterized in that: The inner wall of the connecting pipe is fixedly connected with a sealing ring, the sealing ring is made of rubber material, and the right end of the surface of the fixing rod is movably sleeved in the sealing ring.

7. A vertical check valve according to claim 1, characterized in that: The left and right sides of the inner wall of the valve body near the upper end are both fixedly connected with guide plates, and the two guide plates are symmetrically inclined and arranged below the connecting rod.

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