Anti-blocking check valve

Abstract

The invention relates to the technical field of valves, in particular to an anti-blocking check valve which comprises a valve body, a valve rod, a valve rod, a valve rod, a valve rod, a valve rod, a valve rod and a valve rod, the valve rod is hollow and forms a mounting cavity, and a water inlet and a water outlet are correspondingly formed in the valve body; the separating plate is connected with the inner wall of the valve body, and a water passing hole used for communicating the water inlet with the water outlet is formed in the separating plate; one end of the sliding rod extends into the mounting cavity, and the sliding rod is in sliding connection with the valve body; the plugging block is connected with the sliding rod, the plugging block is located in the mounting cavity, and the plugging block can plug the water passing hole; the elastic non-return piece is located on the outer side of the valve body, the elastic non-return piece is connected with the valve body, the elastic non-return piece is connected with the sliding rod, and the elastic non-return piece is used for enabling the plugging block to move towards one side of the blocking plate; the check valve has the effect that the valve element driving structure in the check valve is replaced on the premise that normal work of a pipeline system is not affected.

Description

Technical Field

[0001] This application relates to the field of valve technology, and in particular to an anti-clogging check valve. Background Technology

[0002] Valves are an indispensable part of pipeline systems. According to their function, valves can be classified into various types such as check valves, shut-off valves, on-off valves, and check valves. Among them, the main function of check valves is to ensure that the medium flows in one direction in the pipeline and to promptly block backflow in the event of backflow.

[0003] A prior art disclosure discloses a check valve sealing structure, comprising a valve body with an internal valve cavity, an inlet communicating with the valve cavity, and an outlet at one end of the valve body opposite to the inlet; a valve core disposed within the valve cavity and slidably connected to the valve body, with an abutment surface on the inner wall of the valve cavity on the side of the inlet, the valve core abutting against the abutment surface to open and close the inlet; an elastic element disposed between the valve core and the valve body, the elastic element applying a spring force to the valve core to press it tightly against the abutment surface; and a sealing element including a sealing gasket, the abutment surface having an installation groove for installing the sealing gasket, the sealing gasket being disposed within the installation groove, and the valve body abutting against the sealing gasket.

[0004] Regarding the aforementioned technologies, when water flows in the forward direction, the water flow exerts force on the valve core, causing the valve core to overcome the elastic force of the elastic element and move towards the side away from the water inlet, thereby achieving pipeline connection. However, after long-term use, the elastic element, which is a key driving component of the valve core, may fail due to corrosion or metal fatigue, resulting in the loss of the valve core's check function. Furthermore, since the elastic element is located inside the valve body, replacing the elastic element requires shutting down the pipeline system, making the replacement relatively difficult. Summary of the Invention

[0005] In order to replace the valve core drive structure inside the check valve without affecting the normal operation of the pipeline system, this application provides an anti-clogging check valve.

[0006] The anti-clogging check valve provided in this application adopts the following technical solution: A clog-resistant check valve, comprising: The valve body is hollow and forms an installation cavity, and the valve body has a corresponding inlet and outlet. An inclined baffle plate is connected to the inner wall of the valve body, and the baffle plate is provided with a water passage hole for connecting the inlet and outlet. A sliding rod, one end of which extends into the mounting cavity, and the sliding rod is slidably connected to the valve body; A sealing block is connected to the sliding rod and is located inside the mounting cavity. The sealing block can block the water passage hole. An elastic check element located outside the valve body is connected to the valve body and to the sliding rod, and is used to move the sealing block toward the barrier plate.

[0007] By adopting the above technical solution, the designed anti-clogging check valve can connect both ends of the pipeline system through the valve body. The baffle plate can separate the inlet and outlet formed on the valve body. The sliding rod, in conjunction with the sealing block and the elastic check element, can intercept the backflow of fluid in the pipeline system. Furthermore, the elastic check element is located on the outside of the valve body, so the pipeline system does not need to be shut down when replacing the elastic element. Thus, the valve core drive structure inside the check valve can be replaced without affecting the normal operation of the pipeline system.

[0008] In one specific implementation, the axis of the sliding rod is perpendicular to the plane of the barrier plate.

[0009] By adopting the above technical solution, the sliding rod with its axis perpendicular to the plane of the barrier plate can move the sealing block more quickly and sensitively using the thrust generated by the fluid flow in the pipeline system.

[0010] In one specific implementation, the blocking block has multiple reinforcing ribs connected to the side away from the barrier plate.

[0011] By adopting the above technical solution, the designed reinforcing ribs can improve the structural strength of the sealing block and reduce the possibility of sealing failure or difficulty in repositioning due to deformation of the sealing block.

[0012] In one specific implementation, the sliding rod is threadedly connected to the sealing block, and at least one clamping and limiting groove is formed on the inner wall of the valve body for the reinforcing rib to extend into, wherein the reinforcing rib can engage with the two side walls of the clamping and limiting groove.

[0013] By adopting the above technical solution, the designed clamping and limiting groove can be used in conjunction with the threaded sliding rod and the sealing block to realize the replacement of the sliding rod.

[0014] In one specific implementation, a protective sleeve is connected to the valve body, the sliding rod is located in the inner cavity of the protective sleeve, and a sealing cover is detachably and fixedly connected to the protective sleeve, and the elastic check element is connected to the sealing cover.

[0015] By adopting the above technical solution, the designed protective sleeve and sealing cap can be used to cover the elastic check element, thereby reducing the possibility of the elastic check element being corroded by the outside world and extending the stability and service life of the elastic check element.

[0016] In one specific implementation, a telescopic sealing bag is connected to the valve body, the telescopic sealing bag is connected to the sliding rod, and the telescopic sealing bag is located in the inner cavity of the protective sleeve.

[0017] By adopting the above technical solution, the designed telescopic sealing bag can seal the sliding part between the valve body and the sliding rod, thereby restricting the flow of liquid that seeps out through the sliding gap between the valve body and the sliding rod, and preventing the seeping liquid from corroding the elastic check element.

[0018] In one specific implementation, a guide vane is connected to the valve body, the guide vane is located in the mounting cavity, and the guide vane is used to change the angle between the fluid entering through the inlet and the sealing block.

[0019] By adopting the above technical solution, the designed guide vane can provide a flow path with less resistance for the fluid flowing through the check valve, and can increase the thrust applied to the sealing block when the flowing liquid moves with the same flow parameters, thereby facilitating the flow of fluid through the water hole.

[0020] In one specific implementation, the barrier plate protrudes from both sides and forms multiple reinforcing ribs.

[0021] By adopting the above technical solution, the designed additional ribs can improve the service life of the barrier plate.

[0022] In one specific implementation, the angle between the barrier plate and the horizontal plane is between 15 degrees and 60 degrees.

[0023] By adopting the above technical solution, the designed baffle plate with an angle between 15 degrees and 60 degrees to the horizontal plane can smoothly open the water passage when the fluid flows in the forward direction and quickly and sensitively block the water passage when the fluid flows in the reverse direction.

[0024] In one specific implementation, the blocking block is located on the side of the barrier plate closer to the outlet.

[0025] By adopting the above technical solution, the speed at which the sealing block blocks the water passage can be increased when the fluid in the pipeline system flows in reverse.

[0026] In summary, this application includes at least one of the following beneficial technical effects: The designed anti-clogging check valve allows connection to both ends of a pipeline system via the valve body. A baffle plate separates the inlet and outlet formed on the valve body. A sliding rod, in conjunction with a sealing block and an elastic check element, can intercept the backflow of fluid in the pipeline system. Furthermore, the elastic check element is located on the outside of the valve body, so replacing the elastic element does not require stopping the pipeline system. This allows for the replacement of the valve core drive structure inside the check valve without affecting the normal operation of the pipeline system.

[0027] The designed anti-clogging check valve can seal the sliding joint between the valve body and the sliding rod, thereby restricting the flow of liquid that seeps through the sliding gap between the valve body and the sliding rod by the telescopic sealing bag, preventing the seeping liquid from corroding the elastic check element.

[0028] The designed anti-clogging check valve provides a low-resistance flow path for the fluid flowing through it and increases the thrust applied to the sealing block when the liquid moves with the same flow parameters, thus facilitating fluid flow through the water hole. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the anti-clogging check valve in an embodiment of this application.

[0030] Figure 2 Is Figure 1 A schematic diagram of the structure after adding reinforcing ribs and strengthening ribs to the original structure.

[0031] Figure 3 Is Figure 2 A schematic diagram of the structure after adding a clamping and limiting groove to the basic structure.

[0032] Figure 4 Is Figure 3 A schematic diagram of the structure after adding a protective sleeve and a sealing cap to the basic structure.

[0033] Figure 5 Is Figure 4 A schematic diagram of the structure after adding a telescopic sealing bag to the basic structure.

[0034] Figure 6 Is Figure 5 A schematic diagram of the structure after adding guide vanes to the original design.

[0035] Explanation of reference numerals in the attached drawings: 1. Valve body; 11. Clamping and limiting groove; 12. Protective sleeve; 13. Sealing cover; 2. Barrier plate; 21. Reinforcing rib; 3. Sliding rod; 4. Sealing block; 41. Reinforcing rib; 5. Elastic check valve; 6. Telescopic sealing bag; 7. Guide plate. Detailed Implementation

[0036] The following is in conjunction with the appendix Figure 1-6 This application will be described in further detail.

[0037] This application discloses an anti-clogging check valve.

[0038] Reference Figure 1 A type of anti-clogging check valve includes a valve body 1, a baffle plate 2, a sliding rod 3, and a sealing block 4. The valve body 1 is hollow and forms an installation cavity. The valve body 1 has corresponding inlet and outlet at both ends. The inlet and outlet are located on opposite sides of the installation cavity, and the installation cavity is connected to the inlet and outlet. The baffle plate 2 is inclined and welded to the inner wall of the valve body 1. In order to facilitate the connection between the inlet and outlet, a water passage hole is opened on the baffle plate 2.

[0039] Reference Figure 2 In order to improve the structural strength of the barrier plate 2, multiple reinforcing ribs 21 protrude from both sides of the barrier plate 2. In this application, the number of reinforcing ribs 21 on the barrier plate 2 can be two, three, or other numbers, as long as they can improve the structural strength of the barrier plate 2 and extend the service life of the barrier plate 2.

[0040] Reference Figure 2 Specifically, the angle between the baffle plate 2 and the horizontal plane is between 15 degrees and 60 degrees. The baffle plate 2, with an angle between 15 degrees and 60 degrees, can smoothly open the water passage when the fluid flows in the forward direction and quickly and sensitively block the water passage when the fluid flows in the reverse direction. The blocking block 4 is located on the side of the baffle plate 2 near the outlet, that is, the blocking block 4 is above the baffle plate 2, thereby increasing the speed at which the blocking block 4 blocks the water passage when the fluid in the pipeline system flows in the reverse direction.

[0041] Reference Figure 2 One end of the sliding rod 3 extends into the mounting cavity and is slidably sealed to the valve body 1. The sealing block 4 is connected to one end of the sliding rod 3 and is located in the mounting cavity. Force is applied to the sliding rod 3 to make the sealing block 4 move toward the baffle plate 2 until the sealing block 4 blocks the water passage. In order to achieve the check function, an elastic check element 5 is also included. The elastic check element 5 is located outside the valve body 1 and is connected to the valve body 1. The elastic check element 5 is connected to the sliding rod 3 and is used to move the sealing block 4 toward the baffle plate 2.

[0042] Reference Figure 2 Furthermore, multiple reinforcing ribs 41 are welded and fixed on the side of the sealing block 4 away from the barrier plate 2. In this application, the number of reinforcing ribs 41 on the sealing block 4 can be two, three, four, or other numbers. In this embodiment, the number of reinforcing ribs 41 on the sealing block 4 is three. The reinforcing ribs 41 can improve the structural strength of the sealing block 4 and reduce the possibility of deformation of the sealing block 4 leading to sealing failure or difficulty in resetting.

[0043] Reference Figure 2 Specifically, the axis of the sliding rod 3 is set perpendicular to the plane of the baffle plate 2. By using the sliding rod 3, whose axis is set perpendicular to the plane of the baffle plate 2, the thrust generated by the fluid flow in the pipeline system can be used to move the blocking block 4 more quickly and sensitively.

[0044] Reference Figure 3 Furthermore, the sliding rod 3 is threadedly connected to the sealing block 4, and at least one clamping and limiting groove 11 is formed on the inner wall of the valve body 1 for the reinforcing rib 41 to extend into. The reinforcing rib 41 can be engaged and fixed with the two side walls of the clamping and limiting groove 11, thereby realizing the disassembly of the sealing block 4 and the sliding rod 3 and the replacement of the sliding rod 3. At the same time, in order to reduce the possibility of the sealing block 4 rotating when the fluid is flowing in the forward direction, a guide plate is welded and fixed to the inner wall of the valve body 1. A sliding gap is left between one side of the sealing block 4 and the guide plate, and the guide plate is located on the side of the sealing block 4 away from the outlet.

[0045] Reference Figure 4 Specifically, a protective sleeve 12 is welded and fixed to the valve body 1. One end of the protective sleeve 12 is open, and the sliding rod 3 is located in the inner cavity of the protective sleeve 12. A sealing cap 13 is detachably and fixedly connected to the end of the protective sleeve 12 away from the valve body 1. One end of the elastic check element 5 is connected to the sealing cap 13. In this application, the sealing cap 13 and the protective sleeve 12 can be threaded, snap-fitted, or other methods that can achieve a detachable and fixed connection. The elastic check element 5 can be a spring or other structures with elastic deformation capabilities. The elastic check element 5 can be covered by the cooperation of the protective sleeve 12 and the sealing cap 13, thereby reducing the possibility of the elastic check element 5 being corroded by the outside world and extending the stability and service life of the elastic check element 5.

[0046] Reference Figure 5 Furthermore, a telescopic sealing bag 6 is bonded and fixed to the valve body 1. The telescopic sealing bag 6 is bonded and fixed to the sliding rod 3, and the telescopic sealing bag 6 is located in the inner cavity of the protective sleeve 12. The sliding gap between the valve body 1 and the sliding rod 3 is connected to the inner cavity of the telescopic sealing bag 6. Through the telescopic sealing bag 6, the sliding part between the valve body 1 and the sliding rod 3 can be sealed, so that the liquid seeping through the sliding gap between the valve body 1 and the sliding rod 3 is restricted from flowing by the telescopic sealing bag 6, and the seeping liquid is prevented from corroding the elastic check element 5.

[0047] Reference Figure 6Furthermore, a guide vane 7 is welded and fixed on the valve body 1. The guide vane 7 is located below the baffle plate 2 and is located in the mounting cavity. The guide vane 7 is used to change the angle between the flow direction of the fluid entering through the inlet and the plane where the sealing block 4 is located. This helps to provide a flow path with less resistance for the fluid flowing through the check valve, and can increase the thrust applied to the sealing block 4 when the flowing liquid moves with the same flow parameters, thereby facilitating the flow of fluid through the water hole.

[0048] The implementation principle of the anti-clogging check valve in this application embodiment is as follows: fluid enters the installation cavity through the inlet end. When the fluid flows through the water hole, due to the push of the fluid, the sealing block 4 exerts force on the sliding rod 3 under the thrust generated by the fluid flow, thereby causing the sliding rod 3 to overcome the elastic force of the elastic check element 5 and move away from the barrier plate 2 until the distance between the sealing block 4 and the barrier plate 2 and the thrust generated by the fluid flow and the elastic force applied by the elastic check element 5 reach a balance. At this time, the fluid in the pipeline system flows stably in the positive direction.

[0049] When the fluid in the pipeline system flows in the reverse direction due to a malfunction, firstly, the elastic check valve 5 loses the thrust applied to the sealing block 4 to overcome the elastic force of the elastic check valve 5 when the fluid flows in the forward direction. Then, the weight of the sealing block 4 and the sliding block itself, as well as the component force applied to the sealing block 4 by the reverse-flowing fluid towards the baffle plate 2, cause the sealing block 4 to move rapidly towards the baffle plate 2 and block the water passage, thereby achieving the backflow prevention function.

[0050] The valve body 1 allows for connection between the two ends of the pipeline system. The baffle plate 2 separates the inlet and outlet formed on the valve body 1. The sliding rod 3, in conjunction with the sealing block 4 and the elastic check element 5, can intercept the backflow of fluid in the pipeline system. Furthermore, the elastic check element 5 is located outside the valve body 1, so the pipeline system does not need to be shut down when replacing the elastic element. Thus, the valve core drive structure inside the check valve can be replaced without affecting the normal operation of the pipeline system.

[0051] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A clog-resistant check valve, characterized in that: include: Valve body (1), the valve body (1) is hollow and forms an installation cavity, and the valve body (1) has a corresponding inlet and outlet; An inclined baffle plate (2) is connected to the inner wall of the valve body (1), and a water passage hole is provided on the baffle plate (2) to enable the inlet and outlet to communicate. A sliding rod (3) has one end extending into the mounting cavity, and the sliding rod (3) is slidably connected to the valve body (1); A sealing block (4) is connected to the sliding rod (3) and the sealing block (4) is located in the mounting cavity. The sealing block (4) can block the water passage hole. An elastic check element (5) is located outside the valve body (1). The elastic check element (5) is connected to the valve body (1) and is also connected to the sliding rod (3) to move the sealing block (4) toward the barrier plate (2).

2. The anti-clogging check valve according to claim 1, characterized in that: The axis of the sliding rod (3) is perpendicular to the plane of the barrier plate (2).

3. The anti-clogging check valve according to claim 1, characterized in that: The sealing block (4) has multiple reinforcing ribs (41) connected to the side away from the barrier plate (2).

4. The anti-clogging check valve according to claim 3, characterized in that: The sliding rod (3) is threadedly connected to the sealing block (4), and at least one clamping and limiting groove (11) is formed on the inner wall of the valve body (1) for the reinforcing rib (41) to extend into. The reinforcing rib (41) can be engaged with the two side walls of the clamping and limiting groove (11).

5. The anti-clogging check valve according to claim 1, characterized in that: A protective sleeve (12) is connected to the valve body (1), the sliding rod (3) is located in the inner cavity of the protective sleeve (12), and a sealing cover (13) is detachably and fixedly connected to the protective sleeve (12), and the elastic check element (5) is connected to the sealing cover (13).

6. The anti-clogging check valve according to claim 5, characterized in that: A telescopic sealing bag (6) is connected to the valve body (1), the telescopic sealing bag (6) is connected to the sliding rod (3), and the telescopic sealing bag (6) is located in the inner cavity of the protective sleeve (12).

7. The anti-clogging check valve according to claim 1, characterized in that: A guide vane (7) is connected to the valve body (1). The guide vane (7) is located in the mounting cavity and is used to change the angle between the fluid entering through the inlet and the sealing block (4).

8. The anti-clogging check valve according to claim 7, characterized in that: The barrier plate (2) protrudes on both sides and forms multiple reinforcing ribs (21).

9. The anti-clogging check valve according to any one of claims 1-8, characterized in that: The angle between the barrier plate (2) and the horizontal plane is between 15 degrees and 60 degrees.

10. The anti-clogging check valve according to any one of claims 1-8, characterized in that: The sealing block (4) is located on the side of the barrier plate (2) near the outlet.

Images