Pressure reducing valve with inner core convenient to replace

Abstract

The utility model belongs to the technical field of pressure reducing valves, and discloses a pressure reducing valve with an inner core convenient to replace, which comprises an upper shell, and the bottom of the upper shell is movably connected with a lower shell. Through the arrangement of the inserting rod, the vertical rod, the movable box and the rotating block, when an operator needs to replace the valve element body, the rotating block is rotated through a hexagon wrench firstly, the rotating block drives a threaded rod to move downwards in the lower shell, and therefore a rectangular rod is driven to rotate and move downwards at the same time, and a disc and a fixed block are driven to rotate; and then two movable boxes are driven to move oppositely through a hinge rod, so that a vertical rod drives an inserting rod to move oppositely, the inserting rod is separated from the interior of a connecting rod, connection between the connecting rod and the valve element body is relieved, and then an operator disassembles the lower shell. And therefore, the inserting rod can drive the valve element body to be separated from the outer surface of the connecting rod, and the valve element body is detached.

Description

Technical Field

[0001] The utility model belongs to the technical field of pressure reducing valves, in particular to a pressure reducing valve with an inner core that is convenient to replace. Background Art

[0002] A pressure reducing valve is a mechanical device used to regulate and control the pressure of fluid or gas. It can reduce high-pressure fluid or gas to the required low-pressure level to ensure the safe operation of pipelines and equipment.

[0003] The pressure reducing valve adjusts the flow and pressure by changing the valve opening degree and the cross-sectional area of the flow path, and relies on the energy of the medium itself to automatically maintain a stable outlet pressure. It is widely used in various industrial and commercial fields. The valve core of the existing pressure reducing valve is prone to aging during long-term use, which leads to a deterioration in the effect of the pressure reducing valve. When replacing the valve core of the existing pressure reducing valve, since the valve core is located in the center of the pressure reducing valve, all the internal parts of the pressure reducing valve need to be removed before the valve core can be replaced, which is very troublesome. Therefore, it needs to be improved. Utility Model Content

[0004] The purpose of the present invention is to solve the above problems. The present invention provides a pressure reducing valve with an easily replaceable inner core, which has the advantage of being easy to replace the valve core.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a pressure reducing valve with convenient replacement of the inner core, comprising an upper shell, the bottom of the upper shell being movably connected to the lower shell, the outer surfaces of the upper shell and the outer surfaces of the lower shell being fixedly sleeved with a first flange and a second flange respectively, a connecting block being movably sleeved in the middle of the inner cavity of the upper shell, the bottom of the connecting block being fixedly connected to a connecting rod, the bottom of the outer surface of the connecting rod being movably sleeved with a valve core body, the interiors of the connecting rod and the valve core body being movably sleeved with plug rods, the number of the plug rods being two, the outer ends of the two plug rods being fixedly connected to A vertical rod, the outer surface of the vertical rod is movably sleeved with a movable box, the bottom of the movable box is movably connected to the bottom of the inner surface of the lower shell, the internal movably sleeved at the bottom end of the lower shell is provided with a rotating block, the top of the rotating block is fixedly connected to a threaded rod, the outer surface of the threaded rod is threadedly sleeved with the inner wall of the lower shell, the top of the threaded rod is fixedly connected to a rectangular rod, the outer surface of the rectangular rod is movably sleeved with a disc, the side of the disc is fixedly connected with a fixed block, there are two fixed blocks, the outer ends of the two fixed blocks are hinged with a hinged rod, and the outer end of the hinged rod is hinged to the inner side of the movable box.

[0006] As a preferred embodiment of the present invention, a rubber pad is fixedly connected to the top of the valve core body, a limit frame is fixedly installed on the bottom of the inner surface of the lower shell, and the inner surface of the limit frame is movably connected to the outer surface of the movable box.

[0007] As a preferred embodiment of the present invention, a sealing ring is fixedly sleeved on the outer surface of the connecting block, a through hole is provided inside the upper shell, and a pressure regulating chamber is provided inside the upper shell located above the through hole.

[0008] As a preferred embodiment of the present invention, a pressure regulating rod is sleeved on the internal thread of the top of the upper shell, a circular plate is movably mounted on the bottom of the pressure regulating rod, and the outer surface of the circular plate is movably sleeved on the inner surface of the upper shell.

[0009] As a preferred embodiment of the present invention, the bottom of the circular plate is fixedly connected to a spring, the bottom of the spring is fixedly connected to a mounting plate, the bottom of the mounting plate is fixedly connected to a diaphragm, the bottom of the diaphragm is fixedly connected to the top of the connecting block, and the side of the diaphragm is fixedly connected to the inner surface of the upper shell.

[0010] As a preferred embodiment of the present invention, an air inlet tee and an air outlet tee are fixedly sleeved on the left and right sides of the outer surface of the upper shell respectively, and a pressure gauge is threadedly sleeved on the inner parts of the top ends of the air inlet tee and the air outlet tee.

[0011] As a preferred embodiment of the present invention, the right end of the air intake tee is fixedly connected to a sealing tube, the top of the sealing tube is fixedly connected to the inner surface of the upper shell, and the bottom of the sealing tube is movably connected to the top of the rubber pad.

[0012] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0013] The utility model provides an insert rod, a vertical rod, a movable box and a rotating block. When the operator needs to replace the valve core body, he first uses a hexagonal wrench to rotate the rotating block, so that the rotating block drives the threaded rod to move downward inside the lower shell body, thereby driving the rectangular rod to move downward while rotating, thereby driving the disc and the fixed block to rotate, and then driving the two movable boxes to move in opposite directions through the hinged rod, so that the vertical rod drives the insert rod to move in opposite directions, thereby making the insert rod disengage from the inside of the connecting rod, and thus releasing the connection between the connecting rod and the valve core body. Then the operator disassembles the lower shell body, so that the insert rod can drive the valve core body to disengage from the outer surface of the connecting rod, thereby disassembling the valve core body, and thus facilitating the operator to replace the valve core body. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the structure of the utility model;

[0015] Figure 2 This is a schematic diagram of the cross-sectional structure of the front side of the utility model;

[0016] Figure 3 This is a schematic cross-sectional view of the lower housing of the present invention;

[0017] Figure 4 This is a schematic diagram of the bottom structure of the utility model when viewed from above;

[0018] Figure 5 for Figure 2 Schematic diagram of the locally enlarged structure at point A in the middle.

[0019] In the figure: 1. Upper shell; 2. Lower shell; 3. First flange; 4. Second flange; 5. Connecting block; 6. Connecting rod; 7. Valve core body; 8. Insert rod; 9. Vertical rod; 10. Movable box; 11. Rotating block; 12. Threaded rod; 13. Rectangular rod; 14. Disc; 15. Fixed block; 16. Articulated rod; 17. Rubber pad; 18. Limiting frame; 19. Sealing ring; 20. Through hole; 21. Pressure regulating rod; 22. Round plate; 23. Spring; 24. Mounting plate; 25. Diaphragm; 26. Pressure regulating chamber; 27. Inlet tee; 28. Sealing tube; 29. Outlet tee; 30. Pressure gauge. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0021] like Figures 1 to 5As shown, the utility model provides a pressure reducing valve with convenient replacement of the inner core, comprising an upper shell 1, the bottom of the upper shell 1 is movably connected to the lower shell 2, the outer surfaces of the upper shell 1 and the outer surfaces of the lower shell 2 are respectively fixedly sleeved with a first flange 3 and a second flange 4, the middle part of the inner cavity of the upper shell 1 is movably sleeved with a connecting block 5, the bottom of the connecting block 5 is fixedly connected to a connecting rod 6, the bottom of the outer surface of the connecting rod 6 is movably sleeved with a valve core body 7, the interiors of the connecting rod 6 and the valve core body 7 are movably sleeved with plug rods 8, there are two plug rods 8, the outer ends of the two plug rods 8 are fixedly connected to vertical rods 9, the outer surfaces of the vertical rods 9 are movably sleeved with a movable box 10, the bottom of the movable box 10 is movably connected to the bottom of the inner surface of the lower shell 2, the interior of the bottom end of the lower shell 2 is movably sleeved with a rotating block 11, the top of the rotating block 11 is fixedly connected to a threaded rod 12, the outer surface of the threaded rod 12 is threadedly sleeved with the inner wall of the lower shell 2, the threaded rod The top of 12 is fixedly connected with a rectangular rod 13, and the outer surface of the rectangular rod 13 is movably sleeved with a disc 14, and the side of the disc 14 is fixedly connected with a fixed block 15. There are two fixed blocks 15, and the outer ends of the two fixed blocks 15 are hinged with a hinged rod 16, and the outer end of the hinged rod 16 is hinged to the inner side of the movable box 10; the operator can use a hexagonal wrench to rotate the rotating block 11 so that the rotating block 11 drives the threaded rod 12 to rotate, and then the threaded rod 12 moves downward inside the lower shell 2, thereby driving the rectangular rod 13 to move downward while rotating, and then driving the disc 14 and the fixed block 15 to rotate, so that the hinged rod 16 can push the two movable boxes 10 to move away from each other, so that the vertical rod 9 can drive the two plug rods 8 to move away from each other, and then the plug rod 8 is separated from the inside of the connecting rod 6, thereby releasing the fixing effect between the connecting rod 6 and the valve core body 7.

[0022] Among them, a rubber pad 17 is fixedly connected to the top of the valve core body 7, and a limit frame 18 is fixedly installed on the bottom of the inner surface of the lower shell 2. The inner surface of the limit frame 18 is movably connected to the outer surface of the movable box 10; by setting the limit frame 18, the limit frame 18 can limit the movable box 10, so that the two movable boxes 10 can only move left and right.

[0023] Among them, a sealing ring 19 is fixedly sleeved on the outer surface of the connecting block 5, a through hole 20 is opened inside the upper shell 1, and a pressure regulating chamber 26 is opened inside the upper shell 1 above the through hole 20; by setting the sealing ring 19, the sealing ring 19 can play a sealing role, and due to the design of the through hole 20, the gas can enter the interior of the pressure regulating chamber 26 through the through hole 20.

[0024] Among them, a pressure-regulating rod 21 is connected to the internal thread at the top of the upper shell 1, and a circular plate 22 is movably installed at the bottom of the pressure-regulating rod 21. The outer surface of the circular plate 22 is movably connected to the inner surface of the upper shell 1; the operator can rotate the pressure-regulating rod 21 so that the pressure-regulating rod 21 can move upward or downward inside the upper shell 1, and then drive the circular plate 22 to move, thereby adjusting the pressure.

[0025] Among them, the bottom of the circular plate 22 is fixedly connected to a spring 23, the bottom of the spring 23 is fixedly connected to a mounting plate 24, the bottom of the mounting plate 24 is fixedly connected to a diaphragm 25, the bottom of the diaphragm 25 is fixedly connected to the top of the connecting block 5, and the side of the diaphragm 25 is fixedly connected to the inner surface of the upper shell 1; when the circular plate 22 moves downward, the spring 23 will be compressed, thereby pushing the mounting plate 24 to move downward, and then causing the diaphragm 25 to concave downward, thereby causing the connecting block 5 to move downward.

[0026] Among them, the left and right sides of the outer surface of the upper shell 1 are respectively fixedly connected with an air intake tee 27 and an air outlet tee 29, and the top of the air intake tee 27 and the air outlet tee 29 are threadedly connected to the inside of the pressure gauge 30; the operator can determine the internal pressure of the air intake tee 27 and the air outlet tee 29 by observing the value displayed on the pressure gauge 30.

[0027] Among them, the right end of the air intake three-way pipe 27 is fixedly connected to a sealing tube 28, the top of the sealing tube 28 is fixedly connected to the inner surface of the upper shell 1, and the bottom of the sealing tube 28 is movably connected to the top of the rubber pad 17; the high-pressure gas inside the air intake three-way pipe 27 will be discharged through the bottom of the sealing tube 28 after entering the interior of the sealing tube 28, thereby being able to relieve pressure.

[0028] The working principle and use process of this utility model:

[0029] When the gas enters from the air intake tee 27, it will enter the interior of the sealing tube 28. When the gas pressure inside the air intake tee 27 and the sealing tube 28 is too high, it will push the valve core body 7 downward, so that the valve core body 7 releases the sealing effect on the sealing tube 28, and at the same time causes the connecting rod 6 to drive the connecting block 5 to move downward, so that the diaphragm 25 is recessed downward. When the valve core body 7 moves downward, the high-pressure gas can enter the interior of the upper shell 1 through the sealing tube 28, and then enter the interior of the pressure regulating chamber 26 through the through hole 20. When the pressure inside the pressure regulating chamber 26 is sufficient to push the diaphragm 25 to bulge upward, the diaphragm 25 will drive the connecting block 5 to rise, thereby driving the valve core body 7 to reset through the connecting rod 6, and then closing the sealing tube 28, thereby completing the regulation of the gas pressure. When the valve core body 7 moves upward or downward, it will drive the vertical rod 9 to move inside the movable box 10 through the insertion rod 8, thereby avoiding affecting the normal use of the valve core body 7.

[0030] When the operator needs to disassemble and replace the valve core body 7, he can use a hexagonal wrench to rotate the rotating block 11, so that the rotating block 11 drives the threaded rod 12 to move downward inside the lower shell 2, thereby driving the rectangular rod 13 to move downward while rotating, and then driving the disc 14 and the fixed block 15 to rotate, so that the hinged rod 16 can push the two movable boxes 10 to move away from each other under the limiting action of the limit frame 18, thereby driving the vertical rod 9 and the plug rod 8 to move away from each other, so that the plug rod 8 is separated from the inside of the connecting rod 6, thereby releasing the fixing effect between the connecting rod 6 and the valve core body 7, and then the operator disassembles the lower shell 2 and moves downward, so that the plug rod 8 can drive the valve core body 7 downward to separate from the outer surface of the connecting rod 6, and the operator continues to rotate the rotating block 11, so that the two plug rods 8 continue to move away from each other, thereby separating from the inside of the valve core body 7 and then the valve core body 7 can be disassembled, avoiding the overall disassembly of the upper shell 1.

[0031] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

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

Claims

1. A pressure reducing valve with an easily replaceable inner core, comprising an upper housing (1), characterized in that: The bottom of the upper shell (1) is movably connected to the lower shell (2), the outer surfaces of the upper shell (1) and the outer surfaces of the lower shell (2) are respectively fixedly sleeved with a first flange (3) and a second flange (4), the middle part of the inner cavity of the upper shell (1) is movably sleeved with a connecting block (5), the bottom of the connecting block (5) is fixedly connected to a connecting rod (6), the bottom of the outer surface of the connecting rod (6) is movably sleeved with a valve core body (7), the interiors of the connecting rod (6) and the valve core body (7) are movably sleeved with an insert rod (8), there are two insert rods (8), the outer ends of the two insert rods (8) are fixedly connected to a vertical rod (9), the outer surface of the vertical rod (9) is movably sleeved with a movable box (10), the movable box (10) is movably sleeved with the outer surface of the vertical rod (9), and the movable box (10) is movably sleeved with the outer surface of the vertical rod (9). 0) is movably connected to the bottom of the inner surface of the lower shell (2), the bottom of the lower shell (2) is movably sleeved with a rotating block (11), the top of the rotating block (11) is fixedly connected to a threaded rod (12), the outer surface of the threaded rod (12) is threadably sleeved with the inner wall of the lower shell (2), the top of the threaded rod (12) is fixedly connected to a rectangular rod (13), the outer surface of the rectangular rod (13) is movably sleeved with a disk (14), the side of the disk (14) is fixedly connected to a fixed block (15), there are two fixed blocks (15), the outer ends of the two fixed blocks (15) are hinged to a hinged rod (16), the outer end of the hinged rod (16) is hinged to the inner side of the movable box (10).

2. A pressure reducing valve with convenient inner core replacement according to claim 1, characterized in that: The top of the valve core body (7) is fixedly connected to a rubber pad (17), and the bottom of the inner surface of the lower shell (2) is fixedly installed with a limit frame (18), and the inner surface of the limit frame (18) is movably connected to the outer surface of the movable box (10).

3. The pressure reducing valve with convenient inner core replacement according to claim 1, characterized in that: A sealing ring (19) is fixedly sleeved on the outer surface of the connecting block (5), a through hole (20) is provided inside the upper shell (1), and a pressure regulating chamber (26) is provided inside the upper shell (1) and is located above the through hole (20).

4. The pressure reducing valve with convenient inner core replacement according to claim 1, characterized in that: The top of the upper shell (1) is internally threaded with a pressure regulating rod (21), and the bottom of the pressure regulating rod (21) is movably mounted with a circular plate (22), the outer surface of the circular plate (22) being movably sleeved with the inner surface of the upper shell (1).

5. The pressure reducing valve with convenient inner core replacement according to claim 4, characterized in that: The bottom of the circular plate (22) is fixedly connected to a spring (23), the bottom of the spring (23) is fixedly connected to a mounting plate (24), the bottom of the mounting plate (24) is fixedly connected to a diaphragm (25), the bottom of the diaphragm (25) is fixedly connected to the top of the connecting block (5), and the side of the diaphragm (25) is fixedly connected to the inner surface of the upper shell (1).

6. The pressure reducing valve with convenient inner core replacement according to claim 1, characterized in that: An air inlet tee (27) and an air outlet tee (29) are fixedly sleeved on the left and right sides of the outer surface of the upper shell (1), respectively. Pressure gauges (30) are threadedly sleeved on the top ends of the air inlet tee (27) and the air outlet tee (29).

7. The pressure reducing valve with convenient inner core replacement according to claim 6, characterized in that: The right end of the air intake tee (27) is fixedly connected to a sealing tube (28), the top of the sealing tube (28) is fixedly connected to the inner surface of the upper shell (1), and the bottom of the sealing tube (28) is movably connected to the top of the rubber pad (17).

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