Pressure-adjustable vertical non-return device

Abstract

The utility model discloses a pressure-adjustable vertical check device, and relates to the field of check valves. The pressure-adjustable vertical non-return device comprises a valve body, a baffle is transversely and fixedly connected to the bottom of an inner cavity of the valve body, a through hole is formed in the top of the baffle, movable seats are fixedly connected to the front side and the rear side of the right side of the bottom of the baffle, and valve clacks are hinged to the inner sides of the movable seats through pin shafts; a hanging ring is fixedly connected to the top of the valve clack, mounting blocks are fixedly connected to the tops of the two sides of an inner cavity of the valve body, fixing plates are fixedly connected to the inner sides of the mounting blocks, through grooves are formed in the tops of the fixing plates, bearings are connected to inner cavities of the through grooves in a sleeved mode, and nuts are connected to inner cavities of the bearings in a sleeved mode. According to the pressure-adjustable vertical non-return device, firstly, the valve body is vertically installed through the flange plate, then the nut is rotated, the nut starts to rotate through the bearing, and the screw rod can be adjusted up and down through rotation of the nut.

Description

Technical Field

[0001] The utility model relates to the field of check valves, in particular to a vertical check device with adjustable pressure. Background Art

[0002] Check valves are used on pipelines in the petroleum, chemical and other industries to prevent the backflow of liquid in the pipeline. Existing check valves have a relatively simple structure and a single function. They can usually only be used horizontally and take up a large space. Some types of check valves can be used vertically, but there is a situation where the valve disc naturally droops due to gravity, or when the pressure in the flow direction of the medium in the pipeline is insufficient and the valve disc cannot be opened automatically, the check valve cannot work normally, causing inconvenience to people's use.

[0003] Therefore, it is necessary to provide an adjustable pressure vertical check device to solve the above-mentioned technical problems. The disclosure of the information in this background technology section is only intended to increase the understanding of the overall background of the invention, and is not necessarily regarded as an admission or suggestion in any form that the information constitutes prior art that is already known to the general technicians in the field. Utility Model Content

[0004] The utility model provides an adjustable pressure vertical check device, which solves the technical problem that the valve flap of the existing check valve does not sag naturally due to its own gravity and the pressure of the valve flap opening in the medium flow direction of the check valve is not adjustable.

[0005] In order to solve the above technical problems, the utility model provides an adjustable pressure vertical check device, including a valve body, a baffle is laterally fixedly connected to the bottom of the valve body cavity, a through hole is opened on the top of the baffle, the front and rear sides of the right side of the bottom of the baffle are fixedly connected to a movable seat, the inner side of the movable seat is hinged with a valve disc through a pin shaft, the top of the valve disc is fixedly connected to a hanging ring, the tops of both sides of the valve body cavity are fixedly connected to mounting blocks, the inner side of the mounting block is fixedly connected to a fixing plate, a through groove is opened on the top of the fixing plate, a bearing is sleeved in the inner cavity of the through groove, a nut is sleeved in the inner cavity of the bearing, a screw rod is threadedly connected to the inner cavity of the nut, a hanging hole is opened at the bottom of the screw rod, and a tension spring is arranged in the inner cavity of the hanging hole, the bottom of the tension spring extends to the bottom of the baffle through the through hole and is fixedly connected to the surface of the hanging ring.

[0006] Preferably, a limiting block is fixedly connected to the top of the screw rod, and the outer diameter of the limiting block is larger than the outer diameter of the nut.

[0007] Preferably, the top and the bottom of the valve body are fixedly connected with flanges, and mounting holes are provided on both sides of the top of the flange.

[0008] Preferably, the tension spring is made of stainless steel.

[0009] Preferably, the surface of the valve body is sprayed with an anti-corrosion paint layer.

[0010] Compared with the related art, the adjustable pressure vertical check device provided by the utility model has the following beneficial effects:

[0011] The utility model provides an adjustable pressure vertical check device. Firstly, a valve body is vertically installed through a flange plate, and then a nut is rotated. The nut starts to rotate through a bearing, and the rotation of the nut can adjust the screw rod up and down.

[0012] The utility model provides an adjustable pressure vertical check device, which can enable a screw rod to control the tension of a tension spring, and the tension spring controls the opening force of a valve disc through a hanging ring. When the medium inside the valve body flows, the valve disc is opened through the tension spring and a movable seat, thereby allowing the medium to flow inside the valve body. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 A structural schematic diagram of a preferred embodiment of an adjustable pressure vertical check device provided by the utility model;

[0014] Figure 2 It is a schematic diagram of the expansion of the valve body and tension spring structure of the utility model;

[0015] Figure 3 This is a cross-sectional view of the fixing plate and through-slot structure of the utility model.

[0016] Numbers in the figure: 1. valve body; 2. baffle; 3. through hole; 4. movable seat; 5. valve disc; 6. hanging ring; 7. mounting block; 8. fixing plate; 9. through groove; 10. bearing; 11. screw rod; 12. tension spring; 13. limit block; 14. flange; 15. nut. DETAILED DESCRIPTION

[0017] In order to enable those skilled in the art to better understand the technical solution of the utility model, the utility model is described in detail below in conjunction with the accompanying drawings. The description in this part is only exemplary and explanatory and should not have any limiting effect on the protection scope of the utility model.

[0018] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0019] It should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the utility model product is usually placed when in use. They are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as a limitation on the utility model. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0020] In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the components are required to be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0021] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. Embodiment 1:

[0022] See also Figure 1-3 The utility model provides a technical solution: an adjustable pressure vertical check device, comprising a valve body 1, a baffle 2 is transversely fixedly connected to the bottom of the inner cavity of the valve body 1, a through hole 3 is opened on the top of the baffle 2, a movable seat 4 is fixedly connected to the front and rear sides of the bottom right side of the baffle 2, a valve disc 5 is hinged on the inner side of the movable seat 4 through a pin shaft, a hanging ring 6 is fixedly connected to the top of the valve disc 5, mounting blocks 7 are fixedly connected to the top of the inner cavity of the valve body 1, a fixing plate 8 is fixedly connected to the inner side of the mounting block 7, a through groove 9 is opened on the top of the fixing plate 8, a bearing 10 is sleeved in the inner cavity of the through groove 9, a nut 15 is sleeved in the inner cavity of the bearing 10, a screw rod 11 is threadedly connected to the inner cavity of the nut 15, a hanging hole is opened at the bottom of the screw rod 11, and a tension spring 12 is arranged in the inner cavity of the hanging hole, and the bottom of the tension spring 12 extends to the bottom of the baffle 2 through the through hole 3 and is fixedly connected to the surface of the hanging ring 6.

[0023] In this embodiment, the limiting block 13 prevents the screw rod 11 and the nut 15 from falling off during use, and the flange 14 facilitates the installation and fixation of the valve body 1 during use. Embodiment 2:

[0024] See also Figure 1-3 As shown, on the basis of embodiment 1, the utility model provides a technical solution: the top of the screw rod 11 is fixedly connected to a limiting block 13, the outer diameter of the limiting block 13 is larger than the outer diameter of the nut 15, the top and bottom of the valve body 1 are fixedly connected to flanges 14, and mounting holes are provided on both sides of the top of the flange 14. The tension spring 12 is made of stainless steel, and the surface of the valve body 1 is sprayed with an anti-corrosion paint layer.

[0025] In this embodiment, the tension spring 12 facilitates the resetting and opening of the valve flap 5 during use, and the anti-corrosion paint layer improves the weather resistance of the valve body 1 during use.

[0026] The working principle of the adjustable pressure vertical check device provided by the utility model is as follows:

[0027] The first step to implement the innovation point:

[0028] Step 1: First, install the valve body 1 vertically through the flange 14, and then rotate the nut 15;

[0029] Step 2: The nut 15 starts to rotate through the bearing 10. The rotation of the nut 15 can adjust the screw rod 11 up and down.

[0030] The second innovation point implementation steps:

[0031] The first step: the screw rod 11 can control the tension of the tension spring 12, and the tension spring 12 controls the opening force of the valve disc 5 through the hanging ring 6, when the medium flows inside the valve body 1;

[0032] Step 2: The valve flap 5 is opened by the tension spring 12 and the movable seat 4 , thereby allowing the medium to flow inside the valve body 1 .

[0033] The standard parts used in this application document can all be purchased from the market and can be customized according to the description in the specification and drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the prior art. The machinery, parts and equipment all adopt conventional models in the prior art. The control method is automatic control through a controller. The control circuit of the controller can be implemented through simple programming by technicians in this field, which is common knowledge in this field. The utility model is mainly used to protect mechanical devices, so the utility model no longer explains the control method and circuit connection in detail. The peripheral controller mentioned in the specification can control the electrical components mentioned in this article, and the peripheral controller is a conventional known device.

[0034] It should be noted that, in this article, the terms "comprises", "includes" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or apparatus.

[0035] This article uses specific examples to illustrate the principles and implementation methods of the utility model. The above examples are only used to help understand the method and core ideas of the utility model. The above are only preferred implementation methods of the utility model. It should be pointed out that due to the limitations of textual expression and the objective existence of infinite specific structures, ordinary technicians in this technical field can make several improvements, modifications or changes without departing from the principles of the utility model, and can also combine the above technical features in an appropriate manner; these improvements, modifications, changes or combinations, or the direct application of the concept and technical solution of the utility model to other occasions without improvement, should be regarded as the protection scope of the utility model.

Claims

1. An adjustable pressure vertical check device, comprising a valve body (1), characterized in that: A baffle (2) is transversely fixedly connected to the bottom of the inner cavity of the valve body (1), a through hole (3) is formed on the top of the baffle (2), a movable seat (4) is fixedly connected to the front and rear sides of the right side of the bottom of the baffle (2), a valve flap (5) is hingedly connected to the inner side of the movable seat (4) via a pin, a hanging ring (6) is fixedly connected to the top of the valve flap (5), mounting blocks (7) are fixedly connected to the top of both sides of the inner cavity of the valve body (1), and a fixing plate (8) is fixedly connected to the inner side of the mounting block (7). ), a through slot (9) is provided on the top of the fixing plate (8), a bearing (10) is sleeved in the inner cavity of the through slot (9), a nut (15) is sleeved in the inner cavity of the bearing (10), a screw rod (11) is threadedly connected in the inner cavity of the nut (15), a hanging hole is provided at the bottom of the screw rod (11), and a tension spring (12) is provided in the inner cavity of the hanging hole, and the bottom of the tension spring (12) extends through the through hole (3) to the bottom of the baffle (2) and is fixedly connected to the surface of the hanging ring (6).

2. The adjustable pressure vertical check device according to claim 1, characterized in that: The top of the screw rod (11) is fixedly connected to a limit block (13), and the outer diameter of the limit block (13) is greater than the outer diameter of the nut (15).

3. The adjustable pressure vertical check device according to claim 1, characterized in that: The top and bottom of the valve body (1) are fixedly connected to flanges (14), and mounting holes are provided on both sides of the top of the flange (14).

4. The adjustable pressure vertical check device according to claim 1, characterized in that: The tension spring (12) is made of stainless steel.

5. The adjustable pressure vertical check device according to claim 1, characterized in that: The surface of the valve body (1) is sprayed with an anti-corrosion paint layer.

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