Pushing device for valve needle of check valve

Abstract

The utility model discloses a pushing device for a valve needle of a check valve, which relates to the field of auxiliary tools of the check valve and comprises a rotating disc, screw-in pipes are symmetrically arranged on two sides of the rotating disc, threads are arranged on the inner wall of one end, far away from the rotating disc, of each screw-in pipe, the check valve is arranged in the threads, and the valve needle is arranged in the check valve. A threaded rod is arranged on one side of the rotating disc in a penetrating mode, abutting-pushing pieces matched with the screw-in pipe and the valve needle are symmetrically arranged at the two ends of the threaded rod, and telescopic rods matched with the screw-in pipe are arranged at the ends, close to the rotating disc, of the abutting-pushing pieces. Under the matching action of the rotating disc, the screw-in pipe, the threaded rod, the pushing piece and the telescopic rod, the valve needle can be further pushed, the pushing effect of the valve needle is enhanced, it is ensured that the valve is more reliable and accurate to open or close, meanwhile, the pushing piece can be easily and conveniently disassembled and assembled, and the valve needle is convenient to disassemble and assemble. And the overall maintenance and operation efficiency of the pushing device is improved.

Description

Technical Field

[0001] The utility model relates to the field of auxiliary tools for check valves, in particular to a push device for a check valve needle. Background Art

[0002] A check valve, also known as a non-return valve or one-way valve, is a fluid control device that allows fluid (such as liquid or gas) to flow in one direction only, while preventing reverse flow. Its primary function is to prevent the backflow of fluid in a piping system, thereby protecting equipment and piping systems from potential damage caused by backflow. Check valves are typically installed at the outlet of a pump to prevent backflow after the pump is shut down.

[0003] Common types of check valves include lift check valves, swing check valves, and needle check valves. In a needle check valve, the valve needle can precisely control the flow path and flow rate of the fluid. The valve needle opens and closes the valve by lifting and lowering on the valve seat, thereby achieving one-way flow of the fluid. In order to ensure that the valve needle can effectively return to its closed position and prevent the fluid from flowing back, a push device is required to push the valve needle. However, the current push device is limited by the length of the external pipe during the pushing process. When the external pipe pushes against the outer wall of the check valve, the internal push member cannot further push the valve needle, affecting the pushing effect of the valve needle. Therefore, there is an urgent need to design a push device for the valve needle of a check valve.

[0004] For example, a Chinese patent with authorization publication number CN219146657U discloses a push device for a check valve needle, including a holding plate and a screw-in tube. The inner wall of the screw-in tube is provided with a screw-in thread for connecting to the check valve, and a mounting seat is provided in the screw-in tube. A push rod is provided in the center of the mounting seat, and a vent hole is provided on the mounting seat.

[0005] Although the push device for the check valve needle can push the valve needle, the pushing process is limited by the length of the external pipeline. When the external push reaches the outer wall of the check valve, the internal push part cannot further push the valve needle, affecting the pushing effect of the valve needle.

[0006] Currently, no effective solutions have been proposed for the problems in related technologies. Utility Model Content

[0007] In response to the problems in the related art, the present invention proposes a push device for a check valve needle to overcome the above technical problems existing in the existing related art.

[0008] To this end, the specific technical solutions adopted in this utility model are as follows:

[0009] A push device for a check valve needle comprises a rotating disk, screw-in tubes are symmetrically arranged on both sides of the rotating disk, a thread is arranged on the inner wall of the screw-in tube at one end away from the rotating disk, a check valve is arranged inside the thread, and a valve needle is arranged inside the check valve; a threaded rod is inserted into one side of the rotating disk, and push pieces cooperating with the screw-in tube and the valve needle are symmetrically arranged at both ends of the threaded rod, and a telescopic rod cooperating with the screw-in tube is arranged at the end of the push piece close to the rotating disk.

[0010] Furthermore, in order to allow the gas inside the check valve to pass through the check valve and be discharged along the swirl pipe and the rotating disk, a plurality of vent holes are opened on one side of the rotating disk, and the plurality of vent holes are distributed at intervals around the center of the rotating disk.

[0011] Furthermore, in order to enable the push piece to effectively push the valve needle further into the valve body when the screw-in tube is against the outer wall of the check valve, thereby ensuring that the opening or closing of the valve is more reliable and accurate, a sliding groove 1 is provided on the outer side of the end of the screw-in tube close to the rotating disk, which cooperates with the telescopic rod; the push piece includes a shell arranged on the outer side of one end of the threaded rod, a push rod cooperating with the valve needle is provided through the inner end of the shell, a spring is provided on the outer side of the top of the push rod, a sliding column cooperating with the shell is provided on the top of the push rod, and a threaded hole cooperating with the telescopic rod is provided on the outer side of the sliding column; a sliding groove 2 cooperating with the telescopic rod is provided at the end of the shell close to the threaded rod, and the structure of the sliding groove 1 and the sliding groove 2 are the same.

[0012] Furthermore, in order to be able to rotate the entire push member on the rotating disk for disassembly and installation through the extension and retraction of the telescopic rod, the telescopic rod includes a screw arranged inside the threaded hole, and the top of the screw is provided with a connecting column that cooperates with sliding groove 1 and sliding groove 2, and the top of the connecting column is provided with a hexagonal hole.

[0013] The beneficial effects of the utility model are:

[0014] 1) The utility model can achieve further pushing of the valve needle under the cooperation of the rotating disk, the screw-in tube, the threaded rod, the pushing member and the telescopic rod, thereby enhancing the pushing effect of the valve needle and enabling the pushing member to be disassembled and installed.

[0015] 2) Under the cooperative action of the rotating disk, the screw-in tube, the push piece and the telescopic rod, when the screw-in tube presses against the outer wall of the check valve, the push piece can effectively push the valve needle further into the valve body, thereby ensuring that the opening or closing of the valve is more reliable and accurate.

[0016] 3) With the cooperation of the threaded rod, the push member and the telescopic rod, the push member can be rotated on the rotating disk as a whole for disassembly and installation by the extension and contraction of the telescopic rod, thereby improving the maintenance and operation efficiency of the entire push device. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 This is a structural schematic diagram of a push device for a check valve needle according to an embodiment of the present utility model;

[0019] Figure 2 It is a cross-sectional schematic diagram of a push device for a check valve needle according to an embodiment of the utility model;

[0020] Figure 3 This is a structural schematic diagram of a push member and a telescopic rod in a push device for a check valve needle according to an embodiment of the present utility model;

[0021] Figure 4 This is a cross-sectional schematic diagram of a push member and a telescopic rod in a push device for a check valve needle according to an embodiment of the present utility model;

[0022] Figure 5 This is a structural diagram of a rotating disk, a screw-in tube and a threaded rod in a push device for a check valve needle according to an embodiment of the present utility model;

[0023] Figure 6 The utility model is a cross-sectional schematic diagram of a rotating disk, a screw-in tube and a threaded rod in a push device for a check valve needle according to an embodiment of the present utility model.

[0024] In the picture:

[0025] 1. Rotating plate; 2. Screw-in tube; 201. Sliding groove 1; 3. Thread; 4. Check valve; 5. Valve needle; 6. Threaded rod; 7. Push piece; 701. Housing; 702. Push rod; 703. Spring; 704. Sliding column; 705. Threaded hole; 706. Sliding groove 2; 8. Telescopic rod; 801. Screw rod; 802. Connecting column; 803. Hexagonal hole; 9. Vent hole. DETAILED DESCRIPTION

[0026] To further illustrate each embodiment, the present invention provides drawings, which are part of the disclosure of the present invention and are mainly used to illustrate the embodiments. They can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. By referring to these contents, ordinary technicians in this field should be able to understand other possible implementation methods and the advantages of the present invention. The components in the figures are not drawn to scale, and similar component symbols are generally used to represent similar components.

[0027] According to an embodiment of the present utility model, a pushing device for a check valve needle is provided.

[0028] The present invention will now be further described with reference to the accompanying drawings and specific embodiments. Figures 1-6 As shown, the configuration method according to the embodiment of the present invention includes a rotating disk 1, and screw-in tubes 2 are symmetrically arranged on both sides of the rotating disk 1, and a thread 3 is provided on the inner wall of the screw-in tube 2 at one end away from the rotating disk 1, and a check valve 4 is provided inside the thread 3, and a valve needle 5 is provided inside the check valve 4; a threaded rod 6 is inserted into one side of the rotating disk 1, and push pieces 7 cooperating with the screw-in tube 2 and the valve needle 5 are symmetrically arranged at both ends of the threaded rod 6, and a telescopic rod 8 cooperating with the screw-in tube 2 is provided at the end of the push piece 7 close to the rotating disk 1.

[0029] With the help of the above technical solution, the utility model can further push the valve needle 5 under the coordinated action of the rotating disk 1, the screw-in tube 2, the threaded rod 6, the push piece 7 and the telescopic rod 8, thereby strengthening the push effect of the valve needle 5 and being able to disassemble and install the push piece 7; under the coordinated action of the rotating disk 1, the screw-in tube 2, the push piece 7 and the telescopic rod 8, when the screw-in tube 2 is against the outer wall of the check valve 4, the push piece 7 can effectively push the valve needle 5 further into the valve body, thereby ensuring that the opening or closing of the valve is more reliable and accurate; under the coordinated action of the threaded rod 6, the push piece 7 and the telescopic rod 8, the push piece 7 can be easily disassembled and installed, thereby improving the overall maintenance and operation efficiency of the push device.

[0030] In addition, the push device for the check valve needle of the utility model can not only push the check valve needle, but also adapt to other items that need to be pushed, such as lock cores, by changing the parameters of the screw-in tube 2 and the push member 7 according to different parameters. It can effectively push the lock core and enable the lock core to be pushed to a deeper position.

[0031] In one embodiment, for the above-mentioned rotating disk 1, a plurality of vent holes 9 are opened on one side of the rotating disk 1, and the plurality of vent holes 9 are distributed at intervals around the center of the rotating disk 1, so that the gas inside the check valve 4 passes through the check valve 4 and is discharged along the screw-in tube 2 and the rotating disk 1.

[0032] In one embodiment, for the above-mentioned screw-in tube 2, push member 7 and telescopic rod 8, a sliding groove 201 is provided on the outer side of the end of the screw-in tube 2 close to the rotating disk 1, which cooperates with the telescopic rod 8; the push member 7 includes a shell 701 arranged on the outer side of one end of the threaded rod 6, and a push rod 702 cooperating with the valve needle 5 is penetrated at one end of the inner end of the shell 701, a spring 703 is provided on the outer side of the top of the push rod 702, and a sliding column 704 cooperating with the shell 701 is provided on the top of the push rod 702, and a threaded hole 705 cooperating with the telescopic rod 8 is provided on the outer side of the sliding column 704; a sliding groove 2 706 is provided on the end of the shell 701 close to the threaded rod 6, which cooperates with the telescopic rod 8, and the sliding groove 201 and the sliding groove 2 706 have the same structure, so that when the screw-in tube 2 is against the outer wall of the check valve 4, the push member 7 can effectively push the valve needle 5 further into the valve body, thereby ensuring that the opening or closing of the valve is more reliable and accurate.

[0033] The working principles of the screw-in tube 2, the push member 7 and the telescopic rod 8 are as follows: in the initial state, when the screw-in tube 2 is rotated along the thread 3 to fit into the outer wall of the check valve 4, and the position of the valve needle 5 needs to be further advanced, the operator applies a force to the telescopic rod 8 as a whole to slide in the sliding groove 1 201. Since the sliding groove 1 201 has the same structure as the sliding groove 2 706, the telescopic rod 8 slides in the sliding groove 1 201 and slides in the sliding groove 2 706 synchronously. Under the action of the threaded hole 705, the sliding column 704 is driven to move during the movement of the telescopic rod 8, and the push rod 702 is driven to move during the movement of the sliding column 704. Under the action of the spring 703, the push rod 702 moves stably to push the valve needle 5.

[0034] In one embodiment, for the above-mentioned telescopic rod 8, the telescopic rod 8 includes a screw 801 arranged inside the threaded hole 705, and the top of the screw 801 is provided with a connecting column 802 that cooperates with the sliding groove 1 201 and the sliding groove 2 706, and the top of the connecting column 802 is provided with a hexagonal hole 803, so that the push member 7 as a whole can be rotated on the rotating disk 1 for disassembly and installation through the extension and retraction of the telescopic rod 8.

[0035] The working principle of the telescopic rod 8 is as follows: in the initial state, when the push member 7 as a whole needs to be replaced, the operator aligns the hexagonal end of the hexagonal wrench with the hexagonal hole 803 and rotates the hexagonal wrench. The cooperation between the hexagonal wrench and the hexagonal hole 803 is used to drive the connecting column 802 to move counterclockwise. During the counterclockwise movement of the connecting column 802, the screw 801 is driven to move counterclockwise. When the screw 801 is moved counterclockwise, it can be screwed into the threaded hole 705. At this time, the height of the telescopic rod 8 is lower than the inner wall of the screw-in tube 2. At this time, the push member 7 is rotated as a whole. Under the action of the threaded rod 6, the push piece is rotated and disassembled. When the push piece 7 needs to be installed, the push piece 7 is rotated in the opposite direction as a whole. When the sliding groove 1 201 and the sliding groove 2 706 are relative to each other, the operator aligns the hexagonal end of the hexagonal wrench with the hexagonal hole 803 and rotates the hexagonal wrench. The cooperation between the hexagonal wrench and the hexagonal hole 803 is used to drive the connecting column 802 to rotate clockwise, and then drive the screw 801 to rotate clockwise, and screw the screw 801 out of the threaded hole 705. At this time, the height of the telescopic rod 8 is higher than the outer wall of the screw-in tube 2, and the installation is completed.

[0036] In order to facilitate understanding of the above technical solutions of the present invention, the working principle or operation method of the present invention in actual process is described in detail below.

[0037] In actual application, in the initial state, the operator aligns the screw-in tube 2 with the thread of the check valve 4, holds the rotating disk 1 and slowly rotates the rotating disk 1. During the rotation of the rotating disk 1, the screw-in tube 2 is driven to rotate. Under the action of the thread 3, the length of the threaded connection between the screw-in tube 2 and the check valve 4 gradually becomes longer. At the same time, the push rod 702 in the push member 7 pushes the valve needle 5 inward. At this time, the gas in the check valve 4 will be discharged from the vent 9 on the rotating disk 1 along the screw-in tube 2. When the screw-in tube 2 is pushed to the outer wall of the check valve 4, if the valve needle 5 needs to be further pushed, the operator needs to The telescopic rod 8 applies a force to slide toward the sliding groove 201, and under the action of the telescopic rod 8, the push rod 702 in the push piece 7 is driven to further advance the valve needle 5 (the working principle of the push piece 7 is as described above). When the push piece 7 needs to be replaced, the operator aligns the hexagonal end of the hexagonal wrench with the hexagonal hole 803 and rotates the hexagonal wrench. The telescopic rod 8 is driven to extend and retract by utilizing the cooperation between the hexagonal wrench and the hexagonal hole 803 (the working principle of the telescopic rod 8 is as described above), and then the push piece 7 is rotated as a whole. Under the action of the threaded rod 6, the push piece is rotated for disassembly and installation.

[0038] In summary, by means of the technical scheme of the utility model, the further pushing of the valve needle 5 can be realized, the pushing effect of the valve needle 5 is strengthened, the pushing piece 7 can be disassembled and installed, under the cooperation of the rotating disc 1, the screwing pipe 2, the threaded rod 6, the pushing piece 7 and the telescopic rod 8, when the screwing pipe 2 abuts against the outer wall of the check valve 4, the pushing piece 7 can effectively push the valve needle 5 further into the valve body, so that the opening or closing of the valve is more reliable and accurate, under the cooperation of the rotating disc 1, the screwing pipe 2, the pushing piece 7 and the telescopic rod 8, the simple disassembly and installation of the pushing piece 7 are realized, and the maintenance and operation efficiency of the whole pushing device is improved.

[0039] In the utility model, unless another definite provision and limitation, the terms "installation", "arrangement", "connection", "fixation", "screw connection" and other terms should be understood broadly, for example, can be fixed connection, also can be detachable connection, or be integrated, can be mechanical connection, also can be electrical connection, can be directly connected, also can pass through intermediate medium indirectly connected, can be the communication of two elements or the interaction of two elements, unless another definite limitation, for the ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to specific circumstances.

[0040] The above only is the preferred embodiment of the utility model, and does not limit the utility model, and any modification, equivalent replacement, improvement etc. that is made within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A push device for a check valve needle, comprising a rotating disk (1), characterized in that: The rotating disk (1) is symmetrically provided with screw-in tubes (2), the inner wall of one end of the screw-in tube (2) away from the rotating disk (1) is provided with a thread (3), the interior of the thread (3) is provided with a check valve (4), and the interior of the check valve (4) is provided with a valve needle (5); A threaded rod (6) is inserted into one side of the rotating disk (1), and push members (7) that cooperate with the screw-in tube (2) and the valve needle (5) are symmetrically provided at both ends of the threaded rod (6). A telescopic rod (8) that cooperates with the screw-in tube (2) is provided at one end of the push member (7) close to the rotating disk (1).

2. A push device for a check valve needle according to claim 1, characterized in that: A plurality of vent holes (9) are provided on one side of the rotating disk (1), and the plurality of vent holes (9) are distributed at intervals around the center of the rotating disk (1).

3. The push device for a check valve needle according to claim 1, characterized in that: A sliding groove (201) that matches the telescopic rod (8) is provided on the outer side of one end of the screw-in tube (2) close to the rotating disk (1).

4. A push device for a check valve needle according to claim 3, characterized in that: The push member (7) includes a shell (701) arranged on the outside of one end of the threaded rod (6), a push rod (702) cooperating with the valve needle (5) is provided through one end of the inner part of the shell (701), a spring (703) is provided on the outside of the top of the push rod (702), a sliding column (704) cooperating with the shell (701) is provided at the top of the push rod (702), and a threaded hole (705) cooperating with the telescopic rod (8) is provided on the outside of the sliding column (704).

5. The push device for a check valve needle according to claim 4, characterized in that: The housing (701) is provided with a second sliding groove (706) matched with the telescopic rod (8) at one end close to the threaded rod (6), and the structure of the first sliding groove (201) and the second sliding groove (706) are the same.

6. A push device for a check valve needle according to claim 5, characterized in that: The telescopic rod (8) includes a screw (801) arranged inside the threaded hole (705), and the top end of the screw (801) is provided with a connecting column (802) that matches the sliding groove 1 (201) and the sliding groove 2 (706), and the top end of the connecting column (802) is provided with a hexagonal hole (803).

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