Bidirectional adjustable reverse blocking device

Abstract

The utility model discloses a bidirectional adjustable reverse blocking device which comprises a pipe body, the pipe body comprises a reverse blocking part and connecting parts symmetrically arranged at the two ends of the reverse blocking part in a communicated mode, and the diameter of the reverse blocking part is larger than that of the connecting parts; the two positioning supports are fixedly arranged in the connecting part, and a positioning shaft is arranged between the two positioning supports in a penetrating mode; the two one-way reverse blocking assemblies are symmetrically arranged at the two ends of the reverse blocking part and arranged on the positioning shaft in a penetrating mode; and the flow direction adjusting assembly is arranged in the reverse blocking part in a penetrating manner, is connected with the two one-way reverse blocking assemblies, and is used for adjusting the working states of the two one-way reverse blocking assemblies. According to the utility model, the two groups of one-way reverse-blocking assemblies are arranged in the reverse-blocking part, the flow direction adjusting assembly is arranged to adjust the working states of the two groups of one-way reverse-blocking assemblies, and the reverse-blocking directions of the device can be opposite by switching the working states of the two one-way reverse-blocking assemblies through the flow direction adjusting assembly, so that the demand of dynamic adjustment of the reverse-blocking directions is met.

Description

Technical Field

[0001] The utility model relates to the technical field of check valves, and particularly relates to a bidirectional adjustable check valve. Background Art

[0002] Traditional check valves play a crucial role in fluid control systems. These devices are mainly used to control the flow direction of fluids in pipeline systems, ensuring that fluids can only flow in a predetermined direction and preventing the adverse effects caused by reverse flow. For example, in a water pump system, a one-way check valve can prevent the liquid from flowing back into the pump when the pump stops working, thus protecting the equipment from damage.

[0003] However, most of the existing check valve designs are based on the one-way control principle, that is, they can only effectively prevent fluid flow in one direction, while being completely open or having a low resistance in the opposite direction. This one-way property is necessary in some cases, but in some specific application environments, a more flexible control method may be required. For example, sometimes it is necessary to precisely control or adjust the fluid flow in both directions. For example, in a complex chemical production line, in order to optimize the process flow, it may be necessary to dynamically adjust the flow direction of the fluid in the pipeline according to the changes in production conditions. In this case, the traditional one-way check valve appears to be functionally single and not flexible enough to meet the requirements of dynamic adjustment.

[0004] Therefore, this application specifically proposes a bidirectional adjustable check valve to solve the above technical problems. Summary of the Utility Model

[0005] The main purpose of the utility model is to solve the above deficiencies and provide a bidirectional adjustable check valve, the check direction of which is adjustable, and the fluid in both directions can be checked according to actual needs.

[0006] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0007] A bidirectional adjustable check valve includes: a pipe body, the pipe body includes a check part and connecting parts symmetrically communicated at both ends of the check part, and the diameter of the check part is larger than that of the connecting parts; two positioning brackets fixedly arranged in the connecting parts, a positioning shaft is arranged between the two positioning brackets; two one-way check components symmetrically arranged at both ends of the check part and arranged on the positioning shaft; a flow direction adjusting component arranged in the check part and connected with the two one-way check components for adjusting the working states of the two one-way check components.

[0008] Further, the one-way blocking component includes a flow-blocking block slidably inserted on the positioning shaft, a blocking block fixedly inserted on the positioning shaft, and a spring movably sleeved on the positioning shaft and having two ends respectively abutted against the flow-blocking block and the blocking block. The structures inserted on the positioning shaft are arranged in the order from one end to the middle of the positioning shaft as follows: positioning bracket, flow-blocking block, spring, blocking block.

[0009] Further, a plurality of support arms are uniformly arranged around the blocking block in a circumferential manner. Guide rods are fixedly arranged at positions corresponding to the support arms on the flow-blocking block, and the guide rods are inserted through the support arms.

[0010] Further, the flow direction adjusting component includes a rotating rod radially inserted into the blocking portion along the radial direction of the blocking portion, a hand wheel fixedly arranged at one end of the rotating rod that is not inserted into the blocking portion, a first pulling rope with one end fixedly wound around the rotating rod and the other end fixedly connected to one of the flow-blocking blocks, and a second pulling rope with one end fixedly wound around the rotating rod and the other end fixedly connected to the other flow-blocking block.

[0011] Further, the winding directions of the first pulling rope and the second pulling rope on the rotating rod are opposite.

[0012] Further, there are two sets of the first pulling rope and the second pulling rope, and the two sets of the first pulling ropes and the two sets of the second pulling ropes are symmetric with respect to the axis of the blocking portion.

[0013] Further, two winding cylinders are fixedly arranged on the rotating rod, the two winding cylinders are symmetric with respect to the axis of the blocking portion, two winding grooves are arranged on the winding cylinders, and the first pulling rope and the second pulling rope are respectively wound in different winding grooves of the same winding cylinder.

[0014] Further, a flange is fixedly arranged at the end of the connecting portion.

[0015] The beneficial effects of the present utility model are embodied in:

[0016] By arranging two sets of one-way blocking components in the blocking portion and arranging a flow direction adjusting component to adjust the working states of the two sets of one-way blocking components, the present utility model enables one of the one-way blocking components to be in a normal blocking working state and the other one-way blocking component to be in an open state, thereby realizing the one-way blocking function of the device. By using the flow direction adjusting component to switch the working states of the two one-way blocking components, the blocking direction of the device can be reversed, so that the blocking direction can be switched according to the actual use scenario requirements, meeting the requirement of dynamic adjustment of the blocking direction. Description of the Drawings

[0017] The accompanying drawings of the specification, which form a part of this application, are used to provide a further understanding of the present utility model. The schematic embodiments of the present utility model and their descriptions are used to explain the present utility model and do not constitute an improper limitation to the present utility model. In the drawings:

[0018] Figure 1 is a schematic external structure diagram of an embodiment of the present utility model;

[0019] Figure 2 is a schematic semi-sectional view of the tube body of an embodiment of the present utility model;

[0020] Figure 3 is a schematic internal structure diagram of the tube body of an embodiment of the present utility model;

[0021] Figure 4 is an embodiment of the present utility model Figure 2 enlarged view of the structure at A.

[0022] In the figure: 1, tube body; 101, reverse blocking part; 102, connecting part; 2, positioning bracket; 3, one-way reverse blocking assembly; 31, flow blocking block; 32, blocking block; 33, spring; 4, flow direction adjusting assembly; 41, rotating rod; 42, hand wheel; 43, first pulling rope; 44, second pulling rope; 5, support arm; 6, guide rod; 7, winding cylinder; 8, flange; 9, positioning shaft. Detailed implementation manners

[0023] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Without conflict, the embodiments in this application and the features in the embodiments can be combined with each other. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present utility model.

[0024] As Figures 1-4 shown, the present utility model provides a two-way adjustable reverse inhibitor, including:

[0025] The pipe body 1 includes a reverse blocking part 101 and connecting parts 102 symmetrically and communicatively arranged at both ends of the reverse blocking part 101. The diameter of the reverse blocking part 101 is larger than that of the connecting parts 102. There are two positioning brackets 2 fixedly arranged in the connecting parts 102, and a positioning shaft 9 is passed through between the two positioning brackets 2. There are two one-way reverse blocking components 3 symmetrically arranged at both ends of the reverse blocking part 101 and sleeved on the positioning shaft 9. A flow direction adjusting component 4 is passed through the reverse blocking part 101 and connected to the two one-way reverse blocking components 3 for adjusting the working states of the two one-way reverse blocking components 3. The one-way reverse blocking component 3 includes a flow blocking block 31 slidably sleeved on the positioning shaft 9, a blocking block 32 fixedly sleeved on the positioning shaft 9, and a spring 33 movably sleeved on the positioning shaft 9 and abutting against the flow blocking block 31 and the blocking block 32 at both ends respectively. The structures sleeved on the positioning shaft 9 are arranged in the order from one end to the middle of the positioning shaft 9 as follows: positioning bracket 2, flow blocking block 31, spring 33, blocking block 32.

[0026] During use, the working states of the one-way reverse blocking components 3 are adjusted through the flow direction adjusting component 4, so that one of the one-way reverse blocking components 3 abuts against the connecting part 102 and is in a normal reverse blocking working state, while the other one-way reverse blocking component 3 is away from the corresponding connecting part 102 and is in an open state.

[0027] When the fluid flows from the one-way reverse blocking component 3 in the normal reverse blocking working state to the other end of the pipe body 1, the impact force of the fluid pushes the flow blocking block 31 in the one-way reverse blocking component 3 in the normal reverse blocking working state, causing it to move along the positioning shaft 9 and drive the spring 33 to contract. The flow blocking block 31 no longer abuts against the connecting part 102, and the fluid can enter the reverse blocking part 101 and flow out from one end of the one-way reverse blocking component 3 in the open state. When the fluid flows back, it will push the flow blocking block 31 in the one-way reverse blocking component 3 in the normal reverse blocking working state to tightly abut against the connecting part 102, blocking the outlet of the fluid, thereby realizing one-way reverse blocking.

[0028] When it is necessary to adjust the reverse blocking direction, the working states of the one-way reverse blocking components 3 are adjusted through the flow direction adjusting component 4, so that the one-way reverse blocking component 3 originally in the normal reverse blocking state becomes in the open state, while the one-way reverse blocking component 3 originally in the open state becomes in the normal reverse blocking state and abuts against the connecting part 102. At this time, the reverse blocking principle is exactly the same as the above process, but the reverse blocking direction is opposite, thereby realizing the two-way adjustability of the reverse blocking direction of the device.

[0029] In an embodiment, a plurality of support arms 5 are uniformly arranged around the blocking block 32 in a circumferential manner. A guide rod 6 is fixedly arranged at the corresponding position of the flow blocking block 31 and the support arm 5, and the guide rod 6 is passed through the support arm 5.

[0030] With such a design, the plug-in fit between the guide rod 6 and the support arm 5 guides the sliding process of the flow blocking block 31 on the positioning shaft 9, further improving the smoothness of the sliding of the flow blocking block 31 on the positioning shaft 9.

[0031] In one embodiment, the flow direction adjusting assembly 4 includes a rotating rod 41 radially inserted into the blocking portion 101 along the blocking portion 101, a handwheel 42 fixedly arranged at one end of the rotating rod 41 that is not inserted into the blocking portion 101, a first pulling rope 43 with one end fixedly wound around the rotating rod 41 and the other end fixedly connected to one of the flow blocking blocks 31, and a second pulling rope 44 with one end fixedly wound around the rotating rod 41 and the other end fixedly connected to the other flow blocking block 31. The winding directions of the first pulling rope 43 and the second pulling rope 44 around the rotating rod 41 are opposite.

[0032] With such a design, by rotating the handwheel 42 to drive the rotation of the rotating rod 41, since the winding directions of the first pulling rope 43 and the second pulling rope 44 around the rotating rod 41 are opposite, when the rotating rod 41 rotates, one of the pulling ropes is wound and tightened by the rotating rod 41, while the other pulling rope gradually disengages from the rotating rod 41. Here, it is assumed that the first pulling rope 43 disengages from the rotating rod 41 and the second pulling rope 44 winds around the rotating rod 41. When the first pulling rope 43 disengages from the rotating rod 41, the flow blocking block 31 connected thereto slides along the positioning shaft 9 under the pushing action of the spring 33 until it abuts against the connecting portion 102, making the one-way blocking assembly 3 at this location in a normal blocking working state. When the second pulling rope 44 winds around the rotating rod 41, it drives the flow blocking block 31 connected thereto to compress the spring 33 along the positioning shaft 9 and move away from the connecting portion 102, making the one-way blocking assembly 3 at this location in an open state. At this time, the device can be regarded as an ordinary one-way valve and has a one-way blocking function.

[0033] If the handwheel 42 is rotated in the reverse direction, the rotating rod 41 rotates in reverse. Based on the same principle as above, the working states of the two one-way blocking assemblies 3 are interchanged, realizing the switching of the blocking direction of the device.

[0034] In one embodiment, there are two sets of the first pulling rope 43 and the second pulling rope 44, and the two sets of the first pulling rope 43 and the two sets of the second pulling rope 44 are symmetric about the axis of the blocking portion 101.

[0035] With such a design, the external forces exerted by the pulling ropes on the flow blocking block 31 are symmetric on the flow blocking block 31, enabling the flow blocking block 31 to slide more smoothly along the positioning shaft 9.

[0036] In one embodiment, two winding cylinders 7 are fixedly arranged on the rotating rod 41. The two winding cylinders 7 are symmetric about the axis of the blocking portion 101. Two winding grooves are provided on the winding cylinder 7, and the first pulling rope 43 and the second pulling rope 44 are respectively wound in different winding grooves of the same winding cylinder 7.

[0037] With such a design, the winding cylinder 7 can limit the winding process of the pulling rope on the rotating rod 41, preventing the pulling rope from sliding randomly on the rotating rod 41 and affecting the pulling effect of the pulling rope on the flow blocking block 31.

[0038] In one embodiment, a flange 8 is fixedly arranged at the end of the connecting portion 102.

[0039] With such a design, the pipe body 1 can be connected to the fluid pipeline through the flange 8.

[0040] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above exemplary embodiments, and without departing from the spirit or basic characteristics of the present utility model, the present utility model can be implemented in other specific forms. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present utility model.

[0041] It should be noted that if there are descriptions involving "first", "second", etc. in the embodiments of the present utility model, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, "a plurality" means more than two. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement them. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

Claims

1. A two-way adjustable backflow preventer, characterized in that, Comprising: A pipe body (1), the pipe body (1) includes a reverse-blocking portion (101) and connecting portions (102) symmetrically and communicatively arranged at both ends of the reverse-blocking portion (101), and the diameter of the reverse-blocking portion (101) is larger than that of the connecting portion (102); Two positioning brackets (2), fixedly arranged in the connecting portion (102), and a positioning shaft (9) is arranged between the two positioning brackets (2); Two one-way reverse-blocking components (3), symmetrically arranged at both ends of the reverse-blocking portion (101) and sleeved on the positioning shaft (9); A flow direction adjusting component (4), arranged in the reverse-blocking portion (101) and connected to the two one-way reverse-blocking components (3) for adjusting the working states of the two one-way reverse-blocking components (3).

2. The two-way adjustable backflow preventer according to claim 1, characterized in that, The one-way reverse-blocking component (3) includes a flow-blocking block (31) slidably sleeved on the positioning shaft (9), a stop block (32) fixedly sleeved on the positioning shaft (9), and a spring (33) movably sleeved on the positioning shaft (9) and abutting against the flow-blocking block (31) and the stop block (32) at both ends respectively. The structures arranged on the positioning shaft (9) in the order from one end to the middle of the positioning shaft (9) are: positioning bracket (2), flow-blocking block (31), spring (33), stop block (32).

3. The two-way adjustable backflow preventer according to claim 2, wherein, A plurality of support arms (5) are evenly arranged around the stop block (32) in a circumferential manner, and a guide rod (6) is fixedly arranged at the corresponding position of the flow-blocking block (31) and the support arm (5), and the guide rod (6) is arranged on the support arm (5).

4. The two-way adjustable backflow preventer according to claim 2, characterized in that, The flow direction adjusting component (4) includes a rotating rod (41) inserted radially into the reverse-blocking portion (101) along the reverse-blocking portion (101), a handwheel (42) fixedly arranged at one end of the rotating rod (41) that is not inserted into the reverse-blocking portion (101), a first pulling rope (43) with one end fixedly wound around the rotating rod (41) and the other end fixedly connected to one of the flow-blocking blocks (31), and a second pulling rope (44) with one end fixedly wound around the rotating rod (41) and the other end fixedly connected to the other flow-blocking block (31).

5. The two-way adjustable backflow preventer according to claim 4, wherein, The winding directions of the first pulling rope (43) and the second pulling rope (44) on the rotating rod (41) are opposite.

6. The two-way adjustable backflow preventer according to claim 5, characterized in that, There are two groups of the first pulling rope (43) and the second pulling rope (44), and the two groups of the first pulling rope (43) and the two groups of the second pulling rope (44) are both symmetric about the axis of the reverse-blocking portion (101).

7. The two-way adjustable backflow preventer according to claim 6, wherein, Two winding cylinders (7) are fixedly arranged on the rotating rod (41), the two winding cylinders (7) are symmetric about the axis of the reverse-blocking portion (101), two winding wire grooves are arranged on the winding cylinder (7), and the first pulling rope (43) and the second pulling rope (44) are respectively wound in different winding wire grooves of the same winding cylinder (7).

8. The two-way adjustable reverse inhibitor according to claim 1, characterized in that A flange plate (8) is fixedly arranged at the end of the connecting portion (102).

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