Check valve internally provided with buffer piece

Abstract

The utility model provides a check valve internally provided with a buffer piece, and relates to the field of check valves. The check valve internally provided with the buffering piece comprises a liquid inlet pipe, one end of the liquid inlet pipe is connected with a steering block in a penetrating mode, the upper surface of the steering block is fixedly connected with a liquid blocking plate, the outer surface of the side, away from the steering block, of the liquid blocking plate is fixedly connected with a communicating pipe, the inner surface of the liquid blocking plate is slidably connected with an inner pressing pile, and the outer circumferential face of the inner pressing pile is slidably connected with a liquid separation sleeve. According to the check valve internally provided with the buffer piece, a screw groove rod is driven to rotate through an auxiliary rotating frame, then the screw groove rod drives an inner thread sleeve through a thread groove of the screw groove rod to drive a hole adjusting plate to slide, and therefore the hole adjusting plate adjusts the hole opening size of double clamping plates; and the liquid can be sprayed out from the double clamping plates, collides with the inner wall of the communicating pipe and then falls on the guide sliding block, the purpose of providing buffering for the discharged liquid is achieved, and the problem that the liquid is likely to collide with the inner wall of the container to be sputtered due to the too high initial speed of the liquid is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of check valves, in particular to a check valve with a built-in buffer. Background Art

[0002] A check valve is a valve whose opening and closing part is a circular disc and which relies on its own weight and medium pressure to produce movement to block the backflow of the medium. It is an automatic valve and is also called a non-return valve, one-way valve, reflux valve or isolation valve. The disc movement modes are divided into lifting type and swing type.

[0003] During use, the check valve requires high-intensity hydraulic pressure to open it. However, due to the high initial velocity of the liquid, the liquid may hit the inner wall of the container and splash. When the device fails, the hydraulic pressure in the pipeline does not meet the standard and the liquid needs to be drained for maintenance, some check valves may not be able to open and drain the liquid due to their fully enclosed structure. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a check valve with a built-in buffer, which solves the problems raised in the technical background.

[0005] Technical Solution

[0006] To achieve the above purpose, the utility model is implemented through the following technical solutions: a check valve with an internal buffer, including a liquid inlet pipe, one end of the liquid inlet pipe is connected through a steering block, the upper surface of the steering block is fixedly connected to a liquid blocking plate, the outer surface of the liquid blocking plate away from the steering block is fixedly connected to a connecting pipe, the inner surface of the liquid blocking plate is slidably connected to an internal pressure pile, the outer circumferential surface of the internal pressure pile is slidably connected to a liquid isolation sleeve, the end of the liquid isolation sleeve away from the steering block is fixedly connected to the inner wall of the connecting pipe, the end of the internal pressure pile away from the steering block is fixedly connected to a return spring, the end of the return spring away from the steering block is fixedly connected to the inner wall of the connecting pipe, the end of the internal pressure pile away from the steering block is fixedly connected to an external sliding pile, the outer circumferential surface of the external sliding pile is slidably connected to the connecting pipe, and the inner wall of the connecting pipe is fixedly connected to the external sliding pile. The wall is fixedly connected with a double plywood, the inner surface of the double plywood is slidably connected with an adjusting hole plate, the outer surface of the adjusting hole plate is slidably connected with a connecting pipe, the outer surface of the adjusting hole plate away from the outer sliding pile is fixedly connected with an inner grooved sleeve, the inner surface of the inner grooved sleeve is threadedly connected with a screw groove rod, the end of the screw groove rod away from the connecting pipe is fixedly connected with an auxiliary rotating frame, the end of the screw groove rod close to the double plywood is rotatably connected with the connecting pipe, the outer surface of the connecting pipe away from the screw groove rod is fixedly connected with a semi-arc plate, the outer surface of the semi-arc plate close to the inner pressure pile is fixedly connected with a liquid blocking plate, the outer surface of the semi-arc plate away from the connecting pipe is fixedly connected with a guide sliding block, the outer surface of the guide sliding block close to the liquid inlet pipe is fixedly connected with a steering block, and the outer surface of the guide sliding block away from the steering block is through-connected with a liquid outlet pipe.

[0007] Preferably, the liquid blocking plate is a square plate, a semi-arc plate is fixedly connected to the outer surface of the square plate, a steering block is fixedly connected to the lower surface of the square plate, a connecting pipe is fixedly connected to the outer surface of the square plate away from the steering block, a circular hole is provided on the outer surface of the square plate close to the steering block, an internal pressure pile is slidably connected to the inner surface of the circular hole, and the outer surface of the square plate close to the semi-arc plate is an inclined surface.

[0008] Preferably, the connecting pipe is an inverted rectangular box, a liquid blocking plate is fixedly connected to the outer surface of the rectangular box close to the steering block, a semi-arc plate is fixedly connected to the outer surface of the rectangular box close to the guide sliding block, a double plywood is fixedly connected to the inner wall of the rectangular box, a circular hole is provided on the outer surface of the rectangular box away from the steering block, an outer sliding pile is slidably connected to the inner surface of the circular hole, a rectangular hole is provided on the outer surface of the rectangular box away from the guide sliding block, and an adjusting hole plate is slidably connected to the inner surface of the rectangular hole.

[0009] Preferably, the internal pressure pile is a circular pile, the outer circumferential surface of the circular pile is fixedly connected to a ring block, the outer circumferential surface of the circular pile is slidably connected to a liquid blocking plate, the end of the circular pile away from the steering block is fixedly connected to a return spring, and the end of the circular pile away from the steering block is fixedly connected to an outer sliding pile.

[0010] Preferably, the outer sliding pile is a round rod, the outer circumferential surface of the round rod is slidably connected to a connecting tube, the outer circumferential surface of the round rod is slidably connected to a return spring, the end of the round rod close to the steering block is fixedly connected to an internal pressure pile, and the end of the round rod away from the steering block is fixedly connected to a rounded rectangular plate.

[0011] Preferably, the double plywood is a square plate, the outer surface of the square plate is fixedly connected to the inner wall of the connecting tube, the outer surface of the square plate close to the liquid isolation sleeve is provided with a circular hole, the outer surface of the square plate away from the guide slider is provided with a rectangular groove, and the inner surface of the rectangular groove is slidably connected to an adjustment hole plate.

[0012] Preferably, the screw groove rod is a threaded rod, the outer surface of the threaded rod is threadedly connected with an inner sleeve, the end of the threaded rod close to the guide sliding block is fixedly connected to a circular pile, the end of the circular pile away from the threaded rod is rotatably connected to a connecting tube, the end of the threaded rod away from the circular pile is fixedly connected to a columnar cam, and the end of the cam away from the threaded rod is fixedly connected to an auxiliary rotating frame.

[0013] Preferably, the guide slider is a square box, a semi-arc plate is fixedly connected to the upper surface of the square box, a circular hole is provided on the outer surface of the square box away from the steering block, a liquid outlet pipe is fixedly connected to the outer surface of the circular hole, and a triangular block is fixedly connected to the inner surface of the square box. Beneficial Effects

[0014] The utility model provides a check valve with a built-in buffer. It has the following beneficial effects:

[0015] The check valve with a built-in buffer component drives the screw groove rod to rotate through the auxiliary rotating frame, so that the screw groove rod drives the inner sleeve through its own thread groove and then drives the adjustment plate to slide, so that the adjustment plate adjusts the size of the opening of the double clamping plate, so that the liquid can be sprayed out from the double clamping plate, hit the inner wall of the connecting pipe, and then fall on the guide sliding block, thereby achieving the purpose of providing a buffer for the discharged liquid and solving the problem that the initial velocity of the liquid is too high, which may cause the liquid to hit the inner wall of the container and splash.

[0016] The check valve with an internal buffer part lifts the outer sliding pile so that the outer sliding pile pulls the inner pressure pile thereunder to lift, thereby causing the inner pressure pile to disengage from the circular hole of the liquid blocking plate, forcing the steering block and the connecting pipe to be connected. When the hand is released, the return spring pushes the inner pressure pile in the opposite direction, causing the inner pressure pile to slide back into the liquid blocking plate to close the pipeline to prevent backflow, thereby achieving the purpose of forcibly connecting the pipeline from the outside when the hydraulic pressure device fails, and solving the problem that the hydraulic pressure does not meet the standard due to a failure and forced drainage is required for maintenance, but the check valve cannot be opened. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the structure of the interconnecting pipe of the utility model;

[0018] Figure 2 This is a schematic diagram of the structure of the guide slider of the utility model;

[0019] Figure 3 This is a schematic diagram of the double-plywood structure of the utility model;

[0020] Figure 4 This is a schematic diagram of the external sliding pile structure of the utility model.

[0021] Among them, there are liquid inlet pipe 1, steering block 2, liquid blocking plate 3, connecting pipe 4, internal pressure pile 5, liquid isolation sleeve 6, return spring 7, external sliding pile 8, double plywood 9, adjustment hole plate 10, internal groove sleeve 11, screw groove rod 12, auxiliary rotating frame 13, semi-arc plate 14, guide sliding block 15, and liquid outlet pipe 16. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] The utility model provides a check valve with a built-in buffer member, such as Figure 1-4As shown, it includes a liquid inlet pipe 1, one end of which is connected with a steering block 2, the upper surface of the steering block 2 is fixedly connected with a liquid blocking plate 3, the liquid blocking plate 3 is a square plate, the outer surface of the square plate is fixedly connected with a semi-arc plate 14, the lower surface of the square plate is fixedly connected with the steering block 2, the outer surface of the square plate away from the steering block 2 is fixedly connected with a connecting pipe 4, the outer surface of the square plate close to the steering block 2 is provided with a circular hole, the inner surface of the circular hole is slidably connected with an internal pressure pile 5, the outer surface of the square plate close to the semi-arc plate 14 is an inclined surface, and the liquid blocking plate 3 is used to guide the flow direction of a part of the liquid entering the connecting pipe 4.

[0024] A connecting pipe 4 is fixedly connected to the outer surface of the liquid blocking plate 3 on the side away from the steering block 2. The connecting pipe 4 is an inverted rectangular box. The liquid blocking plate 3 is fixedly connected to the outer surface of the rectangular box close to the steering block 2. A semi-arc plate 14 is fixedly connected to the outer surface of the rectangular box close to the guide sliding block 15. A double plywood 9 is fixedly connected to the inner wall of the rectangular box. A circular hole is provided on the outer surface of the rectangular box away from the steering block 2. An outer sliding pile 8 is slidably connected to the inner surface of the circular hole. A rectangular hole is provided on the outer surface of the rectangular box away from the guide sliding block 15. An adjusting hole plate 10 is slidably connected to the inner surface of the rectangular hole. The connecting pipe 4 is used to transfer liquid and provide necessary protection for the devices therein.

[0025] The inner surface of the liquid blocking plate 3 is slidably connected with an internal pressure pile 5, which is a circular pile. An annular block is fixedly connected to the outer circumferential surface of the circular pile. The liquid blocking plate 3 is slidably connected to the outer circumferential surface of the circular pile. A return spring 7 is fixedly connected to the end of the circular pile away from the steering block 2. An outer sliding pile 8 is fixedly connected to the end of the circular pile away from the steering block 2. The internal pressure pile 5 is used to block the opening of the liquid blocking plate 3 and lift it to introduce liquid into the connecting pipe 4 when the hydraulic pressure is sufficient.

[0026] The outer circumferential surface of the internal pressure pile 5 is slidably connected with a liquid isolation sleeve 6, and the end of the liquid isolation sleeve 6 away from the steering block 2 is fixedly connected to the inner wall of the connecting pipe 4, the end of the internal pressure pile 5 away from the steering block 2 is fixedly connected to a return spring 7, and the end of the return spring 7 away from the steering block 2 is fixedly connected to the inner wall of the connecting pipe 4, and the end of the internal pressure pile 5 away from the steering block 2 is fixedly connected to an outer sliding pile 8. The outer sliding pile 8 is a circular rod, and the outer circumferential surface of the circular rod is slidably connected to the connecting pipe 4, and the outer circumferential surface of the circular rod is slidably connected to the return spring 7. The end of the circular rod close to the steering block 2 is fixedly connected to the internal pressure pile 5, and the end of the circular rod away from the steering block 2 is fixedly connected to a rounded rectangular plate. The outer sliding pile 8 is used to confirm the working state of the check valve from the outside, and at the same time, force the check valve to be connected through external force at the right time.

[0027] The outer circumferential surface of the outer sliding pile 8 is slidably connected with a connecting pipe 4, and the inner wall of the connecting pipe 4 is fixedly connected with a double plywood 9. The double plywood 9 is a square plate, and the outer surface of the square plate is fixedly connected with the inner wall of the connecting pipe 4. A circular hole is provided on the outer surface of the square plate close to the liquid isolation sleeve 6, and a rectangular groove is provided on the outer surface of the square plate away from the guide sliding block 15. An adjusting hole plate 10 is slidably connected to the inner surface of the rectangular groove. The two ends of the bottom of the double plywood 9 are fixed to the semi-arc plate 14 to avoid liquid accumulation on the top of the semi-arc plate 14. The double plywood 9 is used to adjust the size of the circular hole of the double plywood 9 by sliding the adjusting hole plate 10, so as to control the liquid hydraulic pressure passing through the double plywood 9.

[0028] The inner surface of the double plywood 9 is slidably connected with an adjusting plate 10, and the outer surface of the adjusting plate 10 is slidably connected with a connecting pipe 4, and the outer surface of the adjusting plate 10 away from the outer sliding pile 8 is fixedly connected with an inner groove sleeve 11, and the inner surface of the inner groove sleeve 11 is threadedly connected with a screw groove rod 12, the screw groove rod 12 is a threaded rod, and the outer surface of the threaded rod is threadedly connected with the inner groove sleeve 11, and the end of the threaded rod close to the guide sliding block 15 is fixedly connected with a circular pile, and the end of the circular pile away from the threaded rod is rotatably connected with the connecting pipe 4, and the end of the threaded rod away from the circular pile is fixedly connected with a columnar convex key, and the end of the convex key away from the threaded rod is fixedly connected with an auxiliary rotating frame 13, and the screw groove rod 12 is used to pull the adjusting plate 10 to slide through the inner groove sleeve 11 during the process of being rotated by the auxiliary rotating frame 13.

[0029] The end of the screw groove rod 12 away from the connecting pipe 4 is fixedly connected to the auxiliary rotating frame 13, the end of the screw groove rod 12 close to the double plywood 9 is rotatably connected to the connecting pipe 4, the outer surface of the connecting pipe 4 away from the screw groove rod 12 is fixedly connected to a semi-arc plate 14, the outer surface of the semi-arc plate 14 close to the internal pressure pile 5 is fixedly connected to the liquid blocking plate 3, the outer surface of the semi-arc plate 14 away from the connecting pipe 4 is fixedly connected to a guide slider 15, the guide slider 15 is a square box, the upper surface of the square box is fixedly connected to the semi-arc plate 14, the outer surface of the square box away from the steering block 2 is provided with a circular hole, the outer surface of the circular hole is fixedly connected to a liquid outlet pipe 16, the inner surface of the square box is fixedly connected to a triangular block, the inclined surface of the triangular block inside the guide slider 15 is provided with irregular protrusions, the guide slider 15 is used to guide the liquid in the connecting pipe 4 to flow into the liquid outlet pipe 16.

[0030] The outer surface of the guide slider 15 on the side close to the liquid inlet pipe 1 is fixedly connected to the steering block 2 , and the outer surface of the guide slider 15 on the side away from the steering block 2 is through-connected to the liquid outlet pipe 16 .

[0031] Working principle: after the liquid enters the steering block 2 through the liquid inlet pipe 1, when the hydraulic pressure reaches a predetermined value, the liquid in the steering block 2 lifts the internal pressure pile 5 in the liquid blocking plate 3 and enters the connecting pipe 4. When a fault occurs inside the pipeline and the pressure is always below the standard, but it is still necessary to discharge the liquid, it is only necessary to lift the outer sliding pile 8 so that the outer sliding pile 8 pulls the internal pressure pile 5 under it to lift it, so that the internal pressure pile 5 is separated from the circular hole of the liquid blocking plate 3, so that the steering block 2 is forcibly connected with the connecting pipe 4. When you let go, the return spring 7 pushes the internal pressure pile 5 in the opposite direction, so that the internal pressure pile 5 slides again. The pipeline is closed inside the plugging plate 3 to prevent backflow. When the liquid flows into the connecting pipe 4, the auxiliary rotating frame 13 is debugged to drive the screw groove rod 12 to rotate, and then the screw groove rod 12 drives the inner groove sleeve 11 through its own thread groove, and then drives the adjustment plate 10 to slide, so that the adjustment plate 10 adjusts the opening size of the double plywood 9, so that the liquid can be ejected from the double plywood 9, hit the inner wall of the connecting pipe 4, and then fall on the guide slider 15, so as to provide a buffer for the discharged liquid and avoid splashing caused by excessive initial velocity of the liquid.

[0032] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A check valve with a built-in buffer, comprising a liquid inlet pipe (1), characterized in that: One end of the liquid inlet pipe (1) is connected to a steering block (2), the upper surface of the steering block (2) is fixedly connected to a liquid blocking plate (3), the outer surface of the liquid blocking plate (3) away from the steering block (2) is fixedly connected to a connecting pipe (4), the inner surface of the liquid blocking plate (3) is slidably connected to an internal pressure pile (5), the outer circumferential surface of the internal pressure pile (5) is slidably connected to a liquid isolation sleeve (6), the end of the liquid isolation sleeve (6) away from the steering block (2) is fixedly connected to the inner wall of the connecting pipe (4), and the internal pressure pile (5) is slidably connected to the outer circumferential surface of the internal pressure pile (5). The end of the pile (5) away from the steering block (2) is fixedly connected to a return spring (7), the end of the return spring (7) away from the steering block (2) is fixedly connected to the inner wall of the connecting pipe (4), the end of the internal pressure pile (5) away from the steering block (2) is fixedly connected to an outer sliding pile (8), the outer circumferential surface of the outer sliding pile (8) is slidably connected to the connecting pipe (4), the inner wall of the connecting pipe (4) is fixedly connected to a double plywood (9), the inner surface of the double plywood (9) is slidably connected to an adjustment hole plate (10), and the adjustment hole The outer surface of the plate (10) is slidably connected to a connecting pipe (4); the outer surface of the orifice adjusting plate (10) away from the outer sliding pile (8) is fixedly connected to an inner groove sleeve (11); the inner surface of the inner groove sleeve (11) is threadedly connected to a screw groove rod (12); the end of the screw groove rod (12) away from the connecting pipe (4) is fixedly connected to an auxiliary rotating frame (13); the end of the screw groove rod (12) close to the double clamping plate (9) is rotatably connected to the connecting pipe (4); the outer surface of the connecting pipe (4) away from the screw groove rod (12) is fixedly connected to a semi-arc plate (14); the outer surface of the semi-arc plate (14) close to the inner pressure pile (5) is fixedly connected to a liquid blocking plate (3); the outer surface of the semi-arc plate (14) away from the connecting pipe (4) is fixedly connected to a guide slider (15); the outer surface of the guide slider (15) close to the liquid inlet pipe (1) is fixedly connected to a steering block (2); the outer surface of the guide slider (15) away from the steering block (2) is through-connected to a liquid outlet pipe (16).

2. A check valve with a built-in buffer according to claim 1, characterized in that: The liquid blocking plate (3) is a square plate, the outer surface of the square plate is fixedly connected to a semi-arc plate (14), the lower surface of the square plate is fixedly connected to a steering block (2), the outer surface of the square plate away from the steering block (2) is fixedly connected to a connecting pipe (4), the outer surface of the square plate close to the steering block (2) is provided with a circular hole, the inner surface of the circular hole is slidably connected to an internal pressure pile (5), and the outer surface of the square plate close to the semi-arc plate (14) is an inclined surface.

3. A check valve with a built-in buffer according to claim 1, characterized in that: The connecting pipe (4) is an inverted rectangular box, the outer surface of the rectangular box close to the steering block (2) is fixedly connected to a liquid blocking plate (3), the outer surface of the rectangular box close to the guide slider (15) is fixedly connected to a semi-arc plate (14), the inner wall of the rectangular box is fixedly connected to a double clamping plate (9), the outer surface of the rectangular box away from the steering block (2) is provided with a circular hole, the inner surface of the circular hole is slidably connected to an outer sliding pile (8), the outer surface of the rectangular box away from the guide slider (15) is provided with a rectangular hole, and the inner surface of the rectangular hole is slidably connected to an adjustment hole plate (10).

4. A check valve with a built-in buffer according to claim 1, characterized in that: The internal pressure pile (5) is a circular pile, the outer circumferential surface of the circular pile is fixedly connected to an annular block, the outer circumferential surface of the circular pile is slidably connected to a liquid blocking plate (3), the end of the circular pile away from the steering block (2) is fixedly connected to a return spring (7), and the end of the circular pile away from the steering block (2) is fixedly connected to an external sliding pile (8).

5. The check valve with a built-in buffer according to claim 1, characterized in that: The outer sliding pile (8) is a circular rod, the outer circumferential surface of the circular rod is slidably connected to a connecting pipe (4), the outer circumferential surface of the circular rod is slidably connected to a return spring (7), the end of the circular rod close to the steering block (2) is fixedly connected to the inner pressure pile (5), and the end of the circular rod away from the steering block (2) is fixedly connected to a rounded rectangular plate.

6. A check valve with a built-in buffer according to claim 1, characterized in that: The double clamping plate (9) is a square plate, the outer surface of which is fixedly connected to the inner wall of the connecting pipe (4), the outer surface of the square plate close to the liquid isolation sleeve (6) is provided with a circular hole, the outer surface of the square plate away from the guide slider (15) is provided with a rectangular groove, and the inner surface of the rectangular groove is slidably connected to the adjustment hole plate (10).

7. A check valve with a built-in buffer according to claim 1, characterized in that: The screw groove rod (12) is a threaded rod, the outer surface of which is threadedly connected to an inner threaded sleeve (11), one end of the threaded rod close to the guide slider (15) is fixedly connected to a circular pile, the end of the circular pile away from the threaded rod is rotatably connected to a connecting pipe (4), the end of the threaded rod away from the circular pile is fixedly connected to a columnar convex key, and the end of the convex key away from the threaded rod is fixedly connected to an auxiliary rotating frame (13).

8. The check valve with a built-in buffer according to claim 1, characterized in that: The guide slide block (15) is a square box, a semi-arc plate (14) is fixedly connected to the upper surface of the square box, a circular hole is provided on the outer surface of the square box away from the steering block (2), a liquid outlet pipe (16) is fixedly connected to the outer surface of the circular hole, and a triangular block is fixedly connected to the inner surface of the square box.

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