Pressure reducing valve

Abstract

The utility model relates to a pressure reducing valve, and relates to the technical field of valves, the pressure reducing valve comprises an upper cover, a base and a connecting piece, the upper cover is arranged on the base, the connecting piece comprises a connecting ring and a connecting block, the connecting ring is arranged on the side, close to the base, of the upper cover, the connecting ring is arranged on the base in a sleeving mode, and the connecting block is arranged on the connecting ring. The number of the connecting blocks is two, the two connecting blocks are both arranged on the inner side wall of the connecting ring, the connecting line between the two connecting blocks passes through the axis of the connecting ring, vertical grooves allowing the connecting blocks to be inserted therein are formed in the outer side wall of the base, and spiral grooves allowing the connecting blocks to rotate are formed in the outer side wall of the base. And the vertical groove and the spiral groove are communicated with each other. The device has the effect that the diaphragm is convenient to replace.

Description

Technical Field

[0001] The present application relates to the technical field of valves, and in particular to a pressure reducing valve. Background Art

[0002] The pressure reducing valve is an important gas equipment installed on the angle valve of the liquefied gas cylinder to connect the angle valve and the hose. It plays the role of reducing the output pressure and stabilizing the output pressure of household gas appliances.

[0003] In the related art, the pressure reducing valve includes a shell and a lifting rod mechanism arranged in the shell, the shell includes two upper and lower cover bodies connected by bolts, the lifting rod mechanism includes a diaphragm and a lifting rod that can be lifted and lowered in the shell, and is characterized in that a liftable adjusting cover is arranged in the shell, a first compression spring is arranged between the adjusting cover and the diaphragm, the adjusting cover is used to adjust the telescopic length of the first compression spring to adjust the elastic force thereof, an anti-dumping mechanism for preventing the lifting rod from tipping over is arranged in the shell, the anti-dumping mechanism includes a limiting groove arranged on the adjusting cover, and the upper end of the lifting rod is placed in the limiting groove for limiting.

[0004] With respect to the above-mentioned related technologies, the inventors believe that the diaphragm undergoes repeated elastic deformation under the pressure of the spring and air pressure, and may be damaged after long-term use, thus requiring replacement. However, maintenance requires removing the bolts with a screwdriver and then opening the cover for replacement, which makes replacement of the diaphragm inconvenient. Utility Model Content

[0005] In order to facilitate the replacement of the diaphragm, the present application provides a pressure reducing valve.

[0006] The present application provides a pressure reducing valve adopting the following technical solution:

[0007] A pressure reducing valve comprises an upper cover, a base and a connecting piece, wherein the upper cover is arranged on the base, and the connecting piece comprises a connecting ring and a connecting block, wherein the connecting ring is arranged on a side of the upper cover close to the base, and the connecting ring is sleeved on the base, and two connecting blocks are provided, and the two connecting blocks are both arranged on the inner side wall of the connecting ring, and the connecting line between the two connecting blocks passes through the axis of the connecting ring, and the outer side wall of the base is provided with a vertical groove for the connecting block to be inserted, and the outer side wall of the base is provided with a spiral groove for the connecting block to rotate, and the vertical groove and the spiral groove are connected to each other.

[0008] Through the above technical solution, when the diaphragm needs to be replaced, the upper cover can be rotated, and the upper cover drives the connecting block to rotate, so that the connecting block rotates along the spiral groove. When the connecting block is located in the vertical groove, the upper cover can be lifted upward to open the base and the upper cover. At this time, the diaphragm can be replaced without the help of tools, which facilitates the replacement of the diaphragm.

[0009] Optionally, a limit member is further included, which includes a limit block, a compression spring and a limit rod. A mounting plate is provided on the base, a plug hole is provided on the mounting plate, the limit rod is slidably plugged into the plug hole, the limit block is provided at one end of the limit rod close to the upper cover, a limit groove is provided on the upper cover for inserting the limit block, the compression spring is coaxially sleeved on the limit rod, one end of the compression spring abuts against the mounting plate, and the other end of the compression spring abuts against the limit block.

[0010] Through the above technical solution, the compression spring squeezes the limit block into the limit groove, and the limit block limits the wall of the limit groove, thereby reducing the risk of rotation of the upper cover and making the fixation of the upper cover more stable.

[0011] Optionally, a shift block is provided at one end of the limiting rod away from the limiting block.

[0012] Through the above technical solution, when the diaphragm needs to be replaced, the shifting block can be moved to drive the limit rod to move, which facilitates the movement of the limit rod and thus facilitates the replacement of the diaphragm.

[0013] The beneficial effects of the utility model are as follows: when the diaphragm needs to be replaced, the upper cover can be rotated, and the upper cover drives the connecting block to rotate, so that the connecting block rotates along the spiral groove; when the connecting block is located in the vertical groove, the upper cover can be lifted upward to open the base and the upper cover, and the diaphragm can be replaced at this time without the help of tools, thereby facilitating the replacement of the diaphragm. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the pressure reducing valve in this application.

[0015] Figure 2 It is a schematic diagram of the explosion structure of the pressure reducing valve in this application.

[0016] Figure 3 It is a schematic diagram of the exploded structure of the limiting member in this application.

[0017] Explanation of the reference numerals: 1. upper cover; 11. limiting groove; 2. base; 21. vertical groove; 22. spiral groove; 23. mounting plate; 231. plug-in hole; 3. connecting piece; 31. connecting ring; 32. connecting block; 4. limiting piece; 41. limiting block; 42. compression spring; 43. limiting rod; 431. shift block. DETAILED DESCRIPTION

[0018] The following is combined with Figure 1-3 This application is described in further detail.

[0019] The embodiment of the present application discloses a pressure reducing valve.

[0020] Reference Figure 1 and Figure 3 The pressure reducing valve comprises an upper cover 1, a base 2 and a connecting member 3, wherein the upper cover 1 is arranged on the base 2, and the connecting member 3 comprises a connecting ring 31 and a connecting block 32, wherein the connecting ring 31 is arranged on a side of the upper cover 1 close to the base 2, and the connecting ring 31 is sleeved on the base 2, and the connecting block 32 is provided with two pieces, and the two connecting blocks 32 are both arranged on the inner side wall of the connecting ring 31, and the connecting line between the two connecting blocks 32 passes through the axis of the connecting ring 31, and the outer side wall of the base 2 is provided with a vertical groove 21 for inserting the connecting block 32, and the outer side wall of the base 2 is provided with a spiral groove 22 for rotating the connecting block 32, and the vertical groove 21 and the spiral groove 22 are connected to each other.

[0021] When the diaphragm needs to be replaced, the upper cover 1 can be rotated, and the upper cover 1 drives the connecting block 32 to rotate, so that the connecting block 32 rotates along the spiral groove 22. When the connecting block 32 is located in the vertical groove 21, the upper cover 1 can be lifted upward to open the base 2 and the upper cover 1. At this time, the diaphragm can be replaced without the help of tools, which facilitates the replacement of the diaphragm.

[0022] It also includes a limit member 4, which includes a limit block 41, a compression spring 42 and a limit rod 43. A mounting plate 23 is provided on the base 2, and a plug hole 231 is provided on the mounting plate 23. The limit rod 43 is slidably plugged into the plug hole 231. The limit block 41 is provided at one end of the limit rod 43 close to the upper cover 1. A limit groove 11 is provided on the upper cover 1 for inserting the limit block 41. The compression spring 42 is coaxially sleeved on the limit rod 43, and one end of the compression spring 42 abuts against the mounting plate 23, and the other end of the compression spring 42 abuts against the limit block 41.

[0023] The compression spring 42 presses the limit block 41 into the limit groove 11, and the limit block 41 limits the groove wall of the limit groove 11, thereby reducing the risk of the upper cover 1 rotating and making the fixation of the upper cover 1 more stable.

[0024] A shift block 431 is disposed at one end of the limiting rod 43 away from the limiting block 41 .

[0025] When the diaphragm needs to be replaced, the shifting block 431 can be moved to drive the limiting rod 43 to move, which facilitates the movement of the limiting rod 43 and thus facilitates the replacement of the diaphragm.

[0026] The implementation principle of a pressure reducing valve in an embodiment of the present application is as follows: the upper cover 1 can be rotated, and the upper cover 1 drives the connecting block 32 to rotate, so that the connecting block 32 rotates along the spiral groove 22. When the connecting block 32 is located in the vertical groove 21, the upper cover 1 can be lifted upward to open the base 2 and the upper cover 1. At this time, the diaphragm can be replaced without the help of tools, which facilitates the replacement of the diaphragm.

[0027] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A pressure reducing valve, characterized in that: The invention comprises an upper cover (1), a base (2) and a connecting member (3), wherein the upper cover (1) is arranged on the base (2), the connecting member (3) comprises a connecting ring (31) and a connecting block (32), the connecting ring (31) is arranged on a side of the upper cover (1) close to the base (2), the connecting ring (31) is sleeved on the base (2), two connecting blocks (32) are provided, the two connecting blocks (32) are both arranged on the inner side wall of the connecting ring (31), the connecting line between the two connecting blocks (32) passes through the axis of the connecting ring (31), the outer side wall of the base (2) is provided with a vertical groove (21) for the connecting block (32) to be inserted, the outer side wall of the base (2) is provided with a spiral groove (22) for the connecting block (32) to rotate, and the vertical groove (21) and the spiral groove (22) are connected to each other.

2. A pressure reducing valve according to claim 1, characterized in that: The invention also comprises a limiting component (4), wherein the limiting component (4) comprises a limiting block (41), a compression spring (42) and a limiting rod (43); a mounting plate (23) is arranged on the base (2); a plug-in hole (231) is provided on the mounting plate (23); the limiting rod (43) is slidably plugged into the plug-in hole (231); the limiting block (41) is arranged at one end of the limiting rod (43) close to the upper cover (1); a limiting groove (11) is provided on the upper cover (1) for inserting the limiting block (41); the compression spring (42) is coaxially sleeved on the limiting rod (43); one end of the compression spring (42) abuts against the mounting plate (23); and the other end of the compression spring (42) abuts against the limiting block (41).

3. A pressure reducing valve according to claim 2, characterized in that: A shift block (431) is provided at one end of the limiting rod (43) away from the limiting block (41).

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