Pressure reducing valve with valve element capable of being rapidly replaced

Abstract

The utility model relates to the technical field of pressure reducing valves, in particular to a pressure reducing valve capable of quickly replacing a valve core, which comprises a valve seat, a first side block arranged on the outer side of the valve seat, a first screw hole arranged on the surface of the first side block, a guide rod arranged on the surface of the valve seat, a valve cover arranged above the valve seat, and a second screw hole arranged on the surface of the valve cover. A third side block is arranged on the outer side of the valve deck, a third screw hole is formed in the surface of the third side block, a concave hole is formed in the surface of the valve deck, the valve element body is arranged between the valve seat and the valve deck, a second side block is arranged on the side face of the valve element body, and second screw holes are formed in the upper surface and the lower surface of the second side block. The pressure reducing valve with the valve element capable of being rapidly replaced has the advantages that a split structure is adopted, the valve seat, the valve element body and the valve deck jointly form the pressure reducing valve, operation is convenient and rapid when the whole pressure reducing valve is assembled and disassembled, pre-positioning can be provided through the design of the guide rod and the guide hole, and the replacement efficiency of the valve element is improved.

Description

Technical Field

[0001] The utility model relates to the field of pressure reducing valves, in particular to a pressure reducing valve with a valve core capable of being quickly replaced. Background Art

[0002] A pressure reducing valve, also known as a safety valve, is a valve that adjusts the inlet pressure to a preset outlet pressure through the adjustment of its own mechanical components, and relies on the energy of the medium itself to automatically maintain a stable outlet pressure. From the perspective of fluid mechanics, a pressure reducing valve is a throttling element with variable local resistance. That is, by changing the throttling area, the flow rate and kinetic energy of the fluid are changed, resulting in different pressure losses, thereby achieving the purpose of pressure reduction.

[0003] In the prior art, the valve body of the pressure reducing valve adopts an integrally formed structure, and the valve core is installed inside the valve body. The valve core will wear out during use, and the pressure reducing function will be weakened. The valve core needs to be replaced regularly. The integral structure of the valve body increases the difficulty of replacing the valve core, reduces the use effect of the pressure reducing valve, and cannot meet the use requirements.

[0004] Therefore, the present invention proposes a pressure reducing valve with a quickly replaceable valve core to solve the above-mentioned problems. Utility Model Content

[0005] The purpose of the present utility model is to provide a pressure reducing valve with a quickly replaceable valve core, so as to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above object, the present invention provides the following technical solution: a pressure reducing valve with a quickly replaceable valve core, the pressure reducing valve with a quickly replaceable valve core comprising: a valve seat, a first side block provided on the outer side of the valve seat, a first screw hole provided on the surface of the first side block, a guide rod provided on the surface of the valve seat, an end surface of the guide rod being chamfered, a valve cover provided above the valve seat, a third side block provided on the outer side of the valve cover, a third screw hole provided on the surface of the third side block, and a concave hole provided on the surface of the valve cover;

[0007] The valve core body is arranged between the valve seat and the valve cover, and a second side block is provided on the side of the valve core body. Second screw holes are provided on the upper and lower surfaces of the second side block, and support pads are provided around the second screw holes. A guide hole is provided on the surface of the valve core body, and the guide hole passes through the valve core body.

[0008] Preferably, an inlet and an outlet are respectively provided on both sides of the valve seat, and a plurality of first side blocks are provided, and the plurality of first side blocks are evenly distributed on the sides of the valve seat.

[0009] Preferably, there are several guide rods, which are evenly distributed on the surface of the valve seat, each guide rod is located between two first side blocks, the surface of the valve seat is covered with a first sealing gasket, the guide rods pass through the first sealing gasket, and the outer ring diameter of the first sealing gasket is larger than the outer ring diameter of the valve seat.

[0010] Preferably, a plurality of guide holes are provided, and the guide holes are evenly distributed on the surface of the valve core body. The outer wall of the guide rod and the inner wall of the guide hole are slidably connected, and the guide rod and the guide holes are distributed in the same manner.

[0011] Preferably, there are several recessed holes, which are evenly distributed on the surface of the valve cover. The recessed holes and the guide holes are arranged in the same manner. The guide rod can be inserted into the recessed holes. The surface of the valve cover is covered with a second sealing gasket, and the recessed holes pass through the second sealing gasket. The outer ring diameter of the second sealing gasket is larger than the outer ring diameter of the valve cover.

[0012] Preferably, the second side block is arranged in the same manner as the first side block, and the third side block is arranged in the same manner as the second side block. Screws are provided in the first screw hole and the second screw hole, and in the second screw hole and the third screw hole. A protrusion is fixed on the end face of the screw, and an inner groove is provided on the surface of the protrusion.

[0013] Preferably, the support pad is located at the end of the second screw hole, and a plurality of support pads are provided. The plurality of support pads are evenly distributed around the end of the second screw hole, and the support pads are cylindrical.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] The utility model proposes a pressure reducing valve with a quickly replaceable valve core, which adopts a split structure, and utilizes a valve seat, a valve core body and a valve cover to form a pressure reducing valve. The overall installation and disassembly are convenient and quick. The design of the guide rod and the guide hole can provide pre-positioning, thereby improving the replacement efficiency of the valve core, thus avoiding the following problems: in the prior art, the pressure reducing valve body adopts an integrated molding structure, and the valve core is installed inside the valve body. The valve core will wear out during use, and the pressure reducing function will be weakened. The valve core needs to be replaced regularly. The valve body with an integrated structure increases the difficulty of replacing the valve core, reduces the use effect of the pressure reducing valve, and cannot meet the use requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the structure of the utility model;

[0017] Figure 2 This is a side view of the structure of the utility model;

[0018] Figure 3 This is a schematic diagram of the valve seat structure of the utility model;

[0019] Figure 4 This is a schematic diagram of the valve core body structure of the utility model;

[0020] Figure 5 This is a schematic diagram of the valve cover structure of the utility model;

[0021] Figure 6 This is a schematic diagram of the screw structure of the utility model.

[0022] In the figure: 1, inlet; 2, outlet; 3, valve seat; 4, valve core body; 5, valve cover; 6, first side block;

[0023] 7. Second side block; 8. Third side block; 9. Guide rod; 10. First screw hole; 11. First sealing gasket;

[0024] 12. Support pad; 13. Second screw hole; 14. Concave hole; 15. Third screw hole; 16. Second sealing gasket; 17. Protrusion; 18. Screw; 19. Inner groove; 20. Guide hole. DETAILED DESCRIPTION

[0025] In order to clearly and completely describe the purpose and technical solution of the present invention and make its advantages more clearly understood, the following is a further detailed description of the embodiments of the present invention in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only part of the embodiments of the present invention, not all of them, and are only used to explain the embodiments of the present invention and are not intended to limit 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.

[0026] Example 1: Please refer to Figures 1-6 The utility model provides a technical solution: a pressure reducing valve with a quickly replaceable valve core, the pressure reducing valve with a quickly replaceable valve core comprising: a valve seat 3, a first side block 6 is provided on the outer side of the valve seat 3, a first screw hole 10 is provided on the surface of the first side block 6, a guide rod 9 is provided on the surface of the valve seat 3, the end surface of the guide rod 9 is chamfered, a valve cover 5 is provided above the valve seat 3, a third side block 8 is provided on the outer side of the valve cover 5, a third screw hole 15 is provided on the surface of the third side block 8, and a concave hole 14 is provided on the surface of the valve cover 5;

[0027] The valve core body 4 is arranged between the valve seat 3 and the valve cover 5. A second side block 7 is provided on the side of the valve core body 4. Second screw holes 13 are formed on the upper and lower surfaces of the second side block 7. Support pads 12 are provided around the second screw holes 13. A guide hole 20 is formed on the surface of the valve core body 4, and the guide hole 20 passes through the valve core body 4.

[0028] When in use, a split structure is adopted, and the valve seat 3, the valve core body 4 and the valve cover 5 together form a pressure reducing valve, and the overall installation and disassembly are convenient and quick. The design of the guide rod 9 and the guide hole 20 can provide pre-positioning, thereby improving the replacement efficiency of the valve core body 4.

[0029] Example 2: On the basis of Example 1, an inlet 1 and an outlet 2 are respectively provided on both sides of the valve seat 3, a plurality of first side blocks 6 are provided, and the plurality of first side blocks 6 are evenly distributed on the side of the valve seat 3, a plurality of guide rods 9 are provided, and the plurality of guide rods 9 are evenly distributed on the surface of the valve seat 3, each guide rod 9 is located between two first side blocks 6, a plurality of guide holes 20 are provided, and the plurality of guide holes 20 are evenly distributed on the surface of the valve core body 4, the outer wall of the guide rod 9 and the inner wall of the guide hole 20 are slidably connected, and the guide rod 9 and the guide hole 20 are slidably connected. The holes 20 are distributed in a consistent manner, a plurality of recessed holes 14 are provided, and the recessed holes 14 are equidistantly distributed on the surface of the valve cover 5. The recessed holes 14 and the guide holes 20 are arranged in a consistent manner, and the guide rod 9 can be inserted into the recessed holes 14. The second side block 7 and the first side block 6 are arranged in a consistent manner, and the third side block 8 and the second side block 7 are arranged in a consistent manner. A screw 18 is provided in the first screw hole 10 and the second screw hole 13, and in the second screw hole 13 and the third screw hole 15. A protrusion 17 is fixed to the end surface of the screw 18, and an inner groove 19 is provided on the surface of the protrusion 17;

[0030] During use, when the valve core body 4 needs to be replaced, the screw 18 is first removed, and then the valve cover 5 and the valve core body 4 are moved from bottom to top respectively, so that the guide rod 9 is extracted from the guide hole 20 and the concave hole 14, and the valve core body 4 is removed. When installing the valve core body 4, the valve core body 4 needs to be moved from top to bottom first so that the guide rod 9 is inserted into the guide hole 20 accordingly. The end surface of the guide rod 9 is chamfered to improve the smoothness of the connection. After the corresponding insertions of the several guide rods 9 into the guide holes 20 are provided, pre-positioning can be achieved so that the first screw hole 10 and the second screw hole 13 are completely corresponding, which is convenient for the subsequent installation of the screw 18. After the screw 18 is installed in the second screw hole 10 and the second screw hole 13, the valve cover 5 is moved from top to bottom, and the guide rod 9 is correspondingly embedded in the concave hole 14, and pre-positioning is also achieved, so that the second screw hole 13 and the third screw hole 15 are corresponding, which is convenient for installing the screw 18. Subsequently, the screw 18 is installed in the second screw hole 13 and the third screw hole 15 to achieve the overall installation of the valve body, thereby reducing the corresponding operation of each screw hole when installing the valve body, shortening the operation time, and improving the installation efficiency. The inner groove 19 is pentagonal, which is convenient for locking operation with a pentagonal screwdriver. When in use, a buffer pad will be fixed at the bottom of the protrusion 17 to prevent the protrusion 17 from directly contacting the valve body surface.

[0031] Example 3: Based on Example 2, a first sealing gasket 11 is provided on the surface of the valve seat 3, the guide rod 9 passes through the first sealing gasket 11, the outer ring diameter of the first sealing gasket 11 is larger than the outer ring diameter of the valve seat 3, a second sealing gasket 16 is provided on the surface of the valve cover 5, the recessed hole 14 passes through the second sealing gasket 16, the outer ring diameter of the second sealing gasket 16 is larger than the outer ring diameter of the valve cover 5, a support gasket 12 is located at the end of the second screw hole 13, a plurality of support gaskets 12 are provided, and the plurality of support gaskets 12 are evenly distributed around the end of the second screw hole 13, and the support gaskets 12 are cylindrical;

[0032] When in use, by setting the first sealing gasket 11 and the second sealing gasket 16, the sealing between the valve seat 3 and the valve core body 4, and the valve core body 4 and the valve cover 5 can be improved respectively. At the same time, during installation, the two sealing gaskets will be squeezed so that the sealing gaskets will fill the gaps between the valve seat 3 and the valve core body 4, and the valve core body 4 and the valve cover 5, and the exposed parts will synchronously wrap the gaps to further improve the sealing. The set support pad 12 is made of elastic material. When the locking screw 18 is performed, the set multiple side blocks will be close to each other, and the support pad 12 can be used for isolation to achieve buffering and avoid damage to the side blocks due to direct contact. The support pad 12 is provided in multiple and evenly distributed around the port of the second screw hole 13, which can provide stable support.

[0033] When actually used, this device adopts a split structure, and the valve seat 3, valve core body 4 and valve cover 5 together form a pressure reducing valve, and the overall installation and disassembly are convenient and quick to operate. The design of the guide rod 9 and the guide hole 20 can provide pre-positioning, thereby improving the replacement efficiency of the valve core body 4. The specific operation is as follows: when the valve core body 4 needs to be replaced, the screw rod 18 is first removed, and then the valve cover 5 and the valve core body 4 are moved from bottom to top respectively, so that the guide rod 9 is extracted from the guide hole 20 and the concave hole 14, and the valve core body 4 is removed. When installing the valve core body 4, it is first necessary to move the valve core body 4 from top to bottom so that the guide rod 9 is inserted into the guide hole 20 accordingly. The end face of the guide rod 9 is chamfered to improve the smoothness of the connection. After the several guide rods 9 are inserted into the guide hole 20 accordingly, pre-positioning can be achieved, so that the first screw hole 10 and the second screw hole 13 are completed. The full correspondence facilitates the subsequent installation of the screw 18. After the screw 18 is installed in the first screw hole 10 and the second screw hole 13, the valve cover 5 is moved from top to bottom, and the guide rod 9 is correspondingly embedded in the concave hole 14, and pre-positioning is also achieved, so that the second screw hole 13 and the third screw hole 15 are corresponding, which is convenient for installing the screw 18. Subsequently, the screw 18 is installed in the second screw hole 13 and the third screw hole 15 to achieve the overall installation of the valve body, thereby reducing the corresponding operation of each screw hole when installing the valve body, shortening the operation time, and improving the installation efficiency. This avoids: In the prior art, the valve body of the pressure reducing valve adopts an integrated molding structure, and the valve core body 4 is installed inside the valve body. The valve core body 4 will wear during use, and the pressure reducing function is weakened. The valve core body 4 needs to be replaced regularly. The valve body with an integrated structure increases the difficulty of replacing the valve core body 4, reduces the use effect of the pressure reducing valve, and cannot meet the use requirements.

[0034] 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 a quickly replaceable valve core, characterized in that: The pressure reducing valve with a quickly replaceable valve core comprises: a valve seat (3), a first side block (6) is provided on the outer side of the valve seat (3), a first screw hole (10) is provided on the surface of the first side block (6), a guide rod (9) is provided on the surface of the valve seat (3), the end surface of the guide rod (9) is chamfered, a valve cover (5) is provided above the valve seat (3), a third side block (8) is provided on the outer side of the valve cover (5), a third screw hole (15) is provided on the surface of the third side block (8), and a concave hole (14) is provided on the surface of the valve cover (5); The valve core body (4) is arranged between the valve seat (3) and the valve cover (5), a second side block (7) is arranged on the side of the valve core body (4), the upper and lower surfaces of the second side block (7) are both provided with second screw holes (13), support pads (12) are arranged around the second screw holes (13), and a guide hole (20) is opened on the surface of the valve core body (4), and the guide hole (20) passes through the valve core body (4).

2. A pressure reducing valve with a quickly replaceable valve core according to claim 1, characterized in that: An inlet (1) and an outlet (2) are respectively provided on both sides of the valve seat (3), and a plurality of first side blocks (6) are provided. The plurality of first side blocks (6) are evenly distributed on the sides of the valve seat (3).

3. The pressure reducing valve with a quickly replaceable valve core according to claim 1, characterized in that: There are a plurality of guide rods (9), which are evenly distributed on the surface of the valve seat (3). Each guide rod (9) is located between two first side blocks (6). A first sealing gasket (11) is laid on the surface of the valve seat (3). The guide rod (9) passes through the first sealing gasket (11). The outer ring diameter of the first sealing gasket (11) is larger than the outer ring diameter of the valve seat (3).

4. The pressure reducing valve with a quickly replaceable valve core according to claim 1, characterized in that: A plurality of guide holes (20) are provided, and the guide holes (20) are evenly distributed on the surface of the valve core body (4). The outer wall of the guide rod (9) and the inner wall of the guide hole (20) are slidably connected, and the guide rod (9) and the guide hole (20) are distributed in the same manner.

5. The pressure reducing valve with a quickly replaceable valve core according to claim 1, characterized in that: There are a plurality of recessed holes (14), which are equidistantly distributed on the surface of the valve cover (5). The recessed holes (14) and the guide holes (20) are arranged in the same manner. The guide rod (9) can be inserted into the recessed holes (14). A second sealing gasket (16) is laid on the surface of the valve cover (5). The recessed holes (14) pass through the second sealing gasket (16). The outer ring diameter of the second sealing gasket (16) is larger than the outer ring diameter of the valve cover (5).

6. The pressure reducing valve with a quickly replaceable valve core according to claim 1, characterized in that: The second side block (7) is arranged in the same manner as the first side block (6), and the third side block (8) is arranged in the same manner as the second side block (7). Screws (18) are provided in the first screw hole (10) and the second screw hole (13), and in the second screw hole (13) and the third screw hole (15). A protrusion (17) is fixed to the end face of the screw rod (18), and an inner groove (19) is provided on the surface of the protrusion (17).

7. The pressure reducing valve with a quickly replaceable valve core according to claim 1, characterized in that: The support pad (12) is located at the end of the second screw hole (13). There are a plurality of support pads (12), which are evenly distributed around the end of the second screw hole (13). The support pads (12) are cylindrical.

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