Manual check valve with valve element convenient to replace

Abstract

The utility model relates to the technical field of manual check valves, and provides a manual check valve convenient for replacing a valve core, which comprises a valve body, a liquid inlet pipe, a liquid outlet pipe and a valve core, a vertically distributed liquid guide channel is arranged in the valve body, the liquid inlet pipe and the liquid outlet pipe are correspondingly arranged on the right side and the left side of the valve body, and the valve core is arranged in the valve body. A Z-shaped channel is formed in the liquid outlet pipe, the liquid inlet pipe and the liquid guide channel, the valve element is clamped in the liquid guide channel in a sliding mode, a valve element position adjusting assembly is installed at the top end of the valve body, and a sealing plug installation inserting hole which is communicated with the inner bottom of the liquid guide channel and allows the valve element to penetrate out is formed in the center of the bottom of the valve body. And a sealing plug is inserted into the sealing plug mounting insertion hole. According to the check valve, the operation efficiency and safety are improved, meanwhile, the maintenance burden is relieved, and the operation efficiency and reliability of whole equipment are improved. The introduction of the design undoubtedly brings remarkable improvement and convenience to fluid control systems in related fields.

Description

Technical Field

[0001] The utility model relates to the technical field of manual check valves, in particular to a manual check valve which is convenient for replacing a valve core. Background Art

[0002] Manual check valves are commonly used to control the one-way flow of fluids and prevent backflow. They are widely used in water treatment, petrochemical, pharmaceutical and other industries. This valve can automatically close when the fluid reverses, protecting the pipeline system.

[0003] Disadvantages of existing manual check valves

[0004] Maintenance complexity: Traditional manual check valves require the entire valve body to be removed from the pipeline if the internal valve core needs to be replaced or maintained. This operation is not only time-consuming but may also require the entire system to be stopped, affecting production efficiency.

[0005] Difficulty in replacing the valve core: In traditional designs, the valve core is fixed inside the valve body, and multiple components need to be disassembled when replacing it. This not only increases the complexity of maintenance, but also increases the technical requirements of the operator.

[0006] High maintenance costs: Since valve core replacement and maintenance require specialized technicians and specific tools, maintenance costs are relatively high. This cost is particularly significant in remote or inaccessible locations.

[0007] Therefore, this invention proposes a manual check valve which is convenient for replacing the valve core to solve the above problems. Utility Model Content

[0008] In order to overcome the defects of the prior art, the purpose of the present invention is to provide a manual check valve which is easy to replace the valve core.

[0009] To achieve the above-mentioned purpose, the technical solution of the present invention is implemented as follows: a manual check valve which is convenient for replacing the valve core, comprising a valve body, a liquid inlet pipe, a liquid outlet pipe and a valve core, a vertically distributed liquid guide channel being provided inside the valve body, the liquid inlet pipe and the liquid outlet pipe being correspondingly installed on the right and left sides of the valve body, the liquid outlet pipe, the liquid inlet pipe and the liquid guide channel forming a Z-shaped channel, the valve core being slidably engaged in the interior of the liquid guide channel, a valve core positioning assembly being installed at the top of the valve body, a closing plug mounting hole being provided at the bottom center of the valve body, which is connected to the bottom of the liquid guide channel and through which the valve core can pass, a closing plug being inserted into the interior of the closing plug mounting hole.

[0010] Preferably, the valve core position adjustment component specifically includes the following structure:

[0011] A valve stem connected to the top center of the valve body;

[0012] A threaded docking head is provided at the bottom end of the valve stem, and the threaded docking head is threadedly docked with the top center of the valve core;

[0013] An adjustment thread is provided in the middle section of the valve stem and is threadedly positioned at the center of the top end of the valve body;

[0014] A rotary disc is provided at the top end of the valve stem.

[0015] Preferably, the top of the closing plug is set to be flush with the outer wall of the Z-shaped channel formed inside the liquid outlet pipe, the liquid inlet pipe, and the liquid guiding channel.

[0016] Preferably, a blocking plug locking bolt is inserted into the left side of the bottom of the valve body, and the front end of the blocking plug locking bolt is inserted into the inside of a positioning through hole provided in the closing plug.

[0017] Preferably, vertical side guiding teeth are provided on both the front and rear side walls of the closing plug, and the two side guiding teeth are correspondingly and slidably inserted into the inside of guiding rails provided on the front and rear side walls of the closing plug installation jack.

[0018] Preferably, a pulling convex column is provided at the center of the bottom of the closing plug.

[0019] The beneficial effects of the present utility model are reflected in:

[0020] Convenience: Through the valve core adjustment assembly at the top and the closing plug design at the bottom, users can conveniently and quickly replace the valve core. The entire process does not require disassembling the entire valve body, greatly simplifying the maintenance process and reducing the downtime.

[0021] Reliability and safety: The design includes a blocking plug locking bolt and a pulling convex column of the closing plug to ensure the sealing and stability of the valve body during the replacement process. This not only ensures the safety of the operation but also improves the operating reliability of the entire system.

[0022] Reduced maintenance cost: Since the valve core can be replaced through simple operations without the need for professional technical support or complex tools, the maintenance cost during long-term operation is reduced.

[0023] In summary, this check valve not only improves the operation efficiency and safety but also reduces the maintenance burden and improves the operating efficiency and reliability of the overall equipment. The introduction of this design undoubtedly brings significant improvements and conveniences to the fluid control systems in related fields. Brief Description of the Drawings

[0024] In the drawings:

[0025] Figure 1 is a schematic structural diagram of the present utility model;

[0026] Figure 2 Schematic diagram of the semi-section structure of the present utility model;

[0027] Figure 3 Schematic diagram of the semi-section split structure of the present utility model;

[0028] Figure 4 Schematic diagram of the structure of the valve core position adjustment assembly of the present utility model;

[0029] Figure 5 Schematic diagram of the structure of the closing plug of the present utility model;

[0030] Figure 6 is Figure 3 Partial enlarged view at position A in

[0031] Explanation of reference numerals:

[0032] 1, valve body; 2, liquid inlet pipe; 3, liquid outlet pipe; 4, valve core; 5, valve core position adjustment assembly; 6, closing plug; 7, barrier plug locking bolt;

[0033] 11, liquid guiding channel; 12, closing plug installation jack;

[0034] 121, guiding rail;

[0035] 51, valve stem; 52, rotating disk; 53, threaded docking head; 54, position adjustment thread;

[0036] 61, side guiding teeth; 62, positioning perforation; 63, pulling convex column. Detailed implementation manners

[0037] The following will further describe the present utility model in detail in conjunction with the drawings and embodiments. Obviously, the described embodiments are only a part of the embodiments of the utility model, rather than all of the embodiments. Without conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. Based on the embodiments in the utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the utility model.

[0038] It should be noted that if there are directional indications (such as up, down, left, right, front, back...) involved in the embodiments of the utility model, then the directional indications are only used to explain the relative position relationship and movement conditions between components in a certain specific posture (as shown in the drawings). If the specific posture changes, then the directional indications will also change accordingly.

[0039] In addition, "a plurality of" means more than two. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions is contradictory 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 utility model.

[0040] Please refer to the attached drawings of the specification Figures 1-6 , the present utility model provides a manual check valve that facilitates the replacement of the valve core:

[0041] The check valve mainly consists of components such as a valve body 1, a liquid inlet pipe 2, a liquid outlet pipe 3, a valve core 4, a liquid guiding channel 11, a valve core position adjusting assembly 5, a sealing plug 6, a blocking plug locking bolt 7, etc.

[0042] Inside the valve body 1, a vertically distributed liquid guiding channel 11 is provided, and this liquid guiding channel 11 is used to guide the flow of the fluid. The liquid inlet pipe 2 and the liquid outlet pipe 3 are respectively installed on the right and left sides of the valve body 1 and are connected to the inside of the liquid guiding channel 11 to form a Z-shaped channel.

[0043] The valve core 4 is installed inside the liquid guiding channel 11 in a sliding and clamping manner and is used to control the one-way flow of the fluid. At the top of the valve body 1, a valve core position adjusting assembly 5 is installed, which is used to adjust the position of the valve core 4.

[0044] At the center of the bottom of the valve body 1, a sealing plug installation socket 12 is provided, and this socket 12 is connected to the inner bottom of the liquid guiding channel 11, allowing the valve core 4 to pass through for replacement operations. Inside the sealing plug installation socket 12, a sealing plug 6 is inserted, which is used to seal the bottom of the valve body to ensure the conveyance of the liquid.

[0045] The valve core position adjusting assembly 5 specifically includes the following structures:

[0046] Valve stem 51: It passes through the center of the top of the valve body 1 and is used to connect the valve core 4.

[0047] Threaded docking head 53: It is arranged at the bottom end of the valve stem 51 and is threadedly docked with the center of the top of the valve core 4 to fix the valve core. At the same time, when replacing the valve core 4, it can be directly screwed off.

[0048] Position adjusting thread 54: It is arranged in the middle section of the valve stem 51 and is threadedly positioned at the center of the top of the valve body 1. It is used to adjust the position of the valve core 4, thereby realizing the operations of intercepting and passing the flow. At the same time, the design that the position adjusting thread 54 is only arranged at the center of the valve stem 51 can unlock the entire valve stem 51 when the position adjusting thread 54 is screwed out downward from the inside of the center of the top of the valve body 1. At this time, pushing the valve stem 51 downward can drive the valve core 4 to slide downward inside the liquid guiding channel 11 and finally extend out at the sealing plug installation socket 12. At this time, the replacement operation of the valve core 4 can be carried out.

[0049] Rotary Disk 52: It is set at the top end of the valve stem 51 and is used to manually rotate and adjust the position of the valve core 4.

[0050] The top of the closing plug 6 is designed to be flush with the outer wall of the Z-shaped channel formed inside the liquid outlet pipe 3, the liquid inlet pipe 2, and the liquid guiding channel 11 to ensure smooth fluid flow in the channel.

[0051] A blocking plug locking bolt 7 is inserted into the left side at the bottom of the valve body 1 and is used to fix the closing plug 6. The front end of the blocking plug locking bolt 7 is inserted into the inside of the positioning through hole 62 provided in the closing plug 6.

[0052] On both the front and rear side walls of the closing plug 6, there is a vertically distributed side guiding tooth 61. The side guiding teeth 61 on both sides are correspondingly and slidably inserted into the inside of the guiding rails 121 provided on the front and rear side walls of the closing plug installation jack 12 to ensure the accuracy of the closing plug 6 in the installation jack 12.

[0053] At the center of the bottom of the closing plug 6, there is a pulling convex column 63, which facilitates the user to take out the closing plug 6 from the closing plug installation jack 12 by pulling the pulling convex column 63 when the valve core 4 needs to be replaced, thereby realizing the replacement of the valve core 4.

[0054] Working Principle

[0055] Close the valves of the liquid inlet pipe 2 and the liquid outlet pipe 3 to ensure that the fluid stops flowing.

[0056] Use a tool such as a wrench to loosen the blocking plug locking bolt 7 and then screw it out completely.

[0057] Pull the pulling convex column 63 at the center of the bottom of the closing plug 6 to take out the closing plug 6 from the closing plug installation jack 12.

[0058] Continuously rotate the valve stem 51 until the adjusting thread 54 at its central position disengages from the center at the top end of the valve body 1. Then, the entire valve stem 51 can be pushed downward. At this time, the old valve core 4 slides downward from the liquid guiding channel 11 and finally passes through the closing plug installation jack 12.

[0059] Rotate the valve core 4 to screw it out of the threaded docking head 53, and then screw the new valve core 4 onto the threaded docking head 53. Then, perform the above operations in reverse to complete the replacement operation of the valve core.

[0060] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

[0061] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above-described exemplary embodiments, and the present utility model can be implemented in other specific forms without departing from the spirit or basic characteristics of the present utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. 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 embraced within the present utility model. Any reference signs in the claims should not be construed as limiting the claims involved.

[0062] In addition, it should be understood that although this specification is described in terms of embodiments, not every embodiment only contains an independent technical solution. This narrative manner of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A manual check valve facilitating the replacement of a valve core, comprising a valve body (1), a liquid inlet pipe (2), a liquid outlet pipe (3) and a valve core (4), characterized in that, Inside the valve body (1), there is a vertically distributed liquid guiding channel (11). The liquid inlet pipe (2) and the liquid outlet pipe (3) are correspondingly installed on the left and right sides of the valve body (1). An inverted Z-shaped channel is formed inside the liquid outlet pipe (3), the liquid inlet pipe (2), and the liquid guiding channel (11). The valve core (4) is slidably clamped inside the liquid guiding channel (11). A valve core position adjusting assembly (5) is installed at the top of the valve body (1). At the center of the bottom of the valve body (1), there is a closed plug installation socket (12) that communicates with the inner bottom of the liquid guiding channel (11) and through which the valve core (4) can pass through. A closed plug (6) is inserted into the closed plug installation socket (12).

2. The manual check valve facilitating the replacement of a valve core according to claim 1, characterized in that, The valve core position adjusting assembly (5) specifically includes the following structure: A valve rod (51) passing through the center of the top of the valve body (1); A threaded docking head (53) provided at the bottom end of the valve rod (51), and the threaded docking head (53) is threadedly docked with the center of the top of the valve core (4); An adjusting thread (54) provided in the middle section of the valve rod (51) and threadedly positioned at the center of the top of the valve body (1); A rotating disk (52) provided at the top end of the valve rod (51).

3. The manual check valve facilitating the replacement of a valve core according to claim 1, wherein The top of the closed plug (6) is set to be flush with the outer wall of the inverted Z-shaped channel formed inside the liquid outlet pipe (3), the liquid inlet pipe (2), and the liquid guiding channel (11).

4. A manual check valve facilitating the replacement of a valve core according to claim 1, characterized in that, A blocking plug locking bolt (7) is inserted into the left side of the bottom of the valve body (1), and the front end of the blocking plug locking bolt (7) is inserted into the positioning through hole (62) provided in the closed plug (6).

5. The manual check valve facilitating the replacement of a valve core according to claim 1, wherein, On the front and rear side walls of the closed plug (6), there is a vertically distributed side guiding tooth (61), and the two side guiding teeth (61) are correspondingly slidably inserted into the guiding rails (121) provided on the front and rear side walls inside the closed plug installation socket (12).

6. A manual check valve facilitating spool replacement according to claim 1, characterized in that, A pulling convex column (63) is provided at the center of the bottom of the closed plug (6).

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