Pressure reducing valve

Abstract

The utility model belongs to the technical field of pressure reducing valves, particularly relates to a pressure reducing valve, and aims to solve the problems that an existing pressure reducing valve lacks a labor-saving rotating structure and needs to be adjusted conveniently and quickly, the pressure reducing valve comprises an upper valve body, a pressure reducing valve body and a fixing column, the pressure reducing valve body is arranged at the bottom of the upper valve body, and the fixing column is arranged at the top end of the upper valve body. A clamping ring is arranged at the top of the fixing column, a rotary knob is arranged at the top of the clamping ring, and a threaded valve rod is arranged in the upper valve body in a penetrating mode. The top of the threaded valve rod for adjustment is fixedly connected with a fixing block, and the top end of the fixing block penetrates through the interior of the fixing column and the interior of the clamping ring and is provided with a connecting rod. A clockwork spring is arranged close to the top end in the upper valve body for adjustment, and a partition plate is arranged at the bottom of the clockwork spring. The fixing device has the advantages that labor-saving rotation adjustment is facilitated, fixing and limiting are conveniently achieved, and reverse rapid rotation is facilitated to relieve fixation.

Description

Technical Field

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

[0002] The main principle of the double-needle pressure reducing valve is that when high-pressure sample water passes through, the gap between the slender needle and the hole in the tube is used to achieve the purpose of pressure reduction. When the pressure at the inlet of the pressure reducing valve is constant, the outlet pressure of the pressure reducing valve can be adjusted and the flow rate can be controlled by simply changing the insertion depth of the needle.

[0003] The double-needle pressure reducing valve for a soda sampling device with publication number CN219453061U, the field of pressure reducing valve for soda sampling, includes a fixing pin, the top and bottom of the back of the fixing pin are symmetrically fixedly connected with elbows, the two sides of the two elbows opposite to each other are symmetrically fixedly connected with joints, the front flange of the pressure reducing valve body is connected with the upper valve body, and the outer wall of the locking nut is fixedly connected with the fixing pin, which has the advantages of being easy to adjust the pressure, simple to operate, able to effectively control the pressure, and easy to disassemble, and can easily maintain and clean its internal components, but the patent still has the following problems:

[0004] In actual use, the operator can only rotate the knob at one end of the adjusting rod to drive the internal adjusting valve stem to move, and then move the decompression needle. When a large amount of stroke needs to be adjusted, the user is required to repeatedly turn the knob. At the same time, since the knob lacks a labor-saving structural design, after it is rotated to the required position, it also lacks a corresponding fixed structure, which makes it easy to rotate in the opposite direction. At the same time, when it needs to be reset after use, the operation is inconvenient and the adjustment cannot be completed quickly. Utility Model Content

[0005] The utility model provides a pressure reducing valve which solves the problem of lack of a labor-saving rotating structure and the need for convenient and rapid adjustment.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A pressure reducing valve comprises an upper valve body, a pressure reducing valve body and a fixing column, wherein the pressure reducing valve body is arranged at the bottom of the upper valve body, the fixing column is arranged at the top of the upper valve body, a clamping ring is arranged at the top of the fixing column, a knob is arranged at the top of the clamping ring, and a threaded valve stem is arranged through the interior of the upper valve body;

[0008] A fixing block is fixedly connected to the top of the threaded valve stem for adjustment, and a connecting rod is arranged at the top of the fixing block through the fixing column and the inside of the clamping ring;

[0009] A spring is arranged near the top of the upper valve body for adjustment, and a partition is arranged at the bottom of the spring. The spring is fixedly connected to the inner wall of the upper valve body and the side wall of the threaded valve stem respectively.

[0010] A prismatic groove is provided at the bottom of the clamping ring for clamping, and a clamping groove corresponding to the prismatic groove at the bottom of the clamping ring is provided on the top outer wall of the fixing column, and the clamping ring and the connecting rod are slidably connected to each other.

[0011] Preferably, the top and bottom of the fixing column are provided with grooves, and the groove at the bottom of the fixing column is sleeved with the fixing block;

[0012] A fixing ring is arranged around the outer wall of the fixing column, a connecting ring is sleeved on the outer wall of the fixing ring, and the connecting ring is connected to the outer wall of the upper valve body through threads.

[0013] Preferably, a sealing plug is provided inside the top groove of the fixing column, an extrusion plug is provided on the top of the sealing plug, and a connecting rod passes through the fixing column, the sealing plug and the extrusion plug to be rotatably connected thereto.

[0014] Preferably, the bottom center of the knob is fixedly connected to the top of the connecting rod, and a sliding plate is slidably connected inside the top of the knob, and one end of the sliding plate is slidably connected to the knob through a clamping block.

[0015] Preferably, the outer wall of the clamping ring is rotatably connected with a rotating ring, and a compression spring is provided on the top of the clamping ring around the outer wall of the connecting rod, and the two ends of the compression spring are respectively connected and fitted with the top of the clamping ring and the bottom of the knob.

[0016] Preferably, both sides of the interior of the pressure reducing valve body are penetrated with accommodating holes, and the interior of the accommodating holes is penetrated with a pressure reducing needle tube;

[0017] One end of the two decompression needle tubes close to the interior of the upper valve body is connected through a connecting ring, and the connecting ring is rotatably connected to the outer wall of the threaded valve stem.

[0018] Preferably, the two accommodating holes at the bottom end of the pressure reducing valve body are respectively connected to a bent pipe, and the ends of the bent pipe away from the pressure reducing valve body are bent away from each other, the end of the bent pipe away from the pressure reducing valve body is connected to a joint, and the end of the pressure reducing needle tube close to the inside of the bent pipe is tapered.

[0019] Compared with the prior art, the beneficial effects of the utility model are:

[0020] 1. When in use, first slide the clamping ring to the top to release the clamping connection between the inner wall of the clamping ring and the outer wall of the top of the fixed column, so that the knob can be easily turned, so that the knob drives the threaded valve stem to rotate through the connecting rod, and at the same time, the sliding plate can be pulled to drive the knob to rotate through the rotation of the sliding plate, and then a longer force arm is provided by the connection between the sliding plate and the knob to facilitate rotation. After the adjustment is completed, the clamping ring is released, so that the extrusion spring can squeeze the clamping ring to make it re-engaged with the top outer wall of the fixed column. Since the inside of the clamping ring and the connecting rod slide against each other, the clamping ring can limit the rotation of the connecting rod, thereby realizing the limitation of the threaded valve stem and preventing it from rotating, and can keep the position of the outer wall connecting ring fixed, while keeping the position of the decompression needle tube fixed.

[0021] 2. When the threaded valve stem rotates, since it is connected to the clockwork spring, it can effectively drive the clockwork spring to rotate and tighten. When reverse adjustment or restoration of the connecting ring position is required, the rotating ring can be pulled again to drive the clamping ring to release the connection with the fixed column, thereby releasing the connection between the connecting rod and the threaded valve stem. The threaded valve stem can automatically rotate in the opposite direction driven by the clockwork spring, thereby realizing rapid adjustment of the connecting ring and quickly changing the position of the decompression needle. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A schematic diagram of a pressure reducing valve proposed by the utility model;

[0023] Figure 2 This is a cross-sectional view of the structure of the connection between the internal upper valve body and the top of a pressure reducing valve proposed by the utility model;

[0024] Figure 3 This is a schematic diagram of the internal structure of an upper valve body of a pressure reducing valve proposed by the utility model;

[0025] Figure 4 This is a cross-sectional view of the internal structure of a pressure reducing valve body of a pressure reducing valve proposed by the utility model;

[0026] Figure 5 The utility model is a cross-sectional view of the structure of the connection between the fixing column and the clamping ring of the pressure reducing valve.

[0027] In the figure: 1. upper valve body; 101. connecting ring; 102. clockwork spring; 103. partition; 2. pressure reducing valve body; 201. accommodating hole; 202. pressure reducing needle tube; 203. connecting ring; 3. fixing column; 301. sealing plug; 302. extrusion plug; 303. fixing ring; 4. snap ring; 401. rotating ring; 5. knob; 501. sliding plate; 502. extrusion spring; 6. threaded valve stem; 601. fixing block; 602. connecting rod; 7. elbow; 701. joint. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0029] Reference Figure 1 , Figure 2 As shown, a pressure reducing valve comprises an upper valve body 1, a pressure reducing valve body 2 and a fixing column 3, wherein the pressure reducing valve body 2 is arranged at the bottom of the upper valve body 1, the fixing column 3 is arranged at the top of the upper valve body 1, a clamping ring 4 is arranged at the top of the fixing column 3, a knob 5 is arranged at the top of the clamping ring 4, a threaded valve stem 6 is arranged through the interior of the upper valve body 1; a fixing block 601 is fixedly connected to the top of the threaded valve stem 6 for adjustment, and the top of the fixing block 601 passes through the interior of the fixing column 3 and the clamping ring 4. There is a connecting rod 602; a clockwork spring 102 is arranged near the top inside the upper valve body 1 for adjustment, and a partition 103 is arranged at the bottom of the clockwork spring 102, and the clockwork spring 102 is fixedly connected to the inner wall of the upper valve body 1 and the side wall of the threaded valve stem 6 respectively; a prismatic groove is provided at the bottom end of the inner part of the clamping ring 4 for clamping, and a clamping groove corresponding to the prismatic groove at the bottom end of the clamping ring 4 is provided on the top outer wall of the fixing column 3, and the clamping ring 4 and the connecting rod 602 are slidably connected to each other.

[0030] Reference Figure 2 , Figure 3 As shown, grooves are provided at the top and bottom of the fixing column 3, and the groove at the bottom of the fixing column 3 is sleeved with the fixing block 601; a fixing ring 303 is arranged around the outer wall of the fixing column 3, and a connecting ring 101 is sleeved on the outer wall of the fixing ring 303, and the connecting ring 101 is connected to the outer wall of the upper valve body 1 through a threaded connection, and a sealing plug 301 is arranged inside the groove at the top of the fixing column 3, and an extrusion plug 302 is arranged on the top of the sealing plug 301, and a connecting rod 602 passes through the fixing column 3, the sealing plug 301 and the extrusion plug 302 and is rotatably connected thereto, and the screw thread is connected to the fixing column 3. When the threaded valve stem 6 rotates, since it is interconnected with the clockwork spring 102, it can effectively drive the clockwork spring 102 to rotate. When reverse adjustment or restoration of the position of the connecting ring 203 is required, the rotating ring 401 can be pulled again, thereby driving the clamping ring 4 to release the connection with the fixed column 3, thereby releasing the connection between the connecting rod 602 and the threaded valve stem 6. The threaded valve stem 6 can automatically rotate in the opposite direction under the drive of the clockwork spring 102, thereby realizing rapid adjustment of the connecting ring 203 and rapidly changing the position of the decompression needle tube 202.

[0031] Reference Figure 3 , Figure 5As shown, the bottom center of the knob 5 is fixedly connected to the top of the connecting rod 602, and a sliding plate 501 is slidably connected to the top of the knob 5. One end of the sliding plate 501 is slidably connected to the knob 5 through a clamping block. The outer wall of the clamping ring 4 is rotatably connected to the rotating ring 401. The top of the clamping ring 4 is provided with an extrusion spring 502 around the outer wall of the connecting rod 602. The two ends of the extrusion spring 502 are respectively connected and fitted with the top of the clamping ring 4 and the bottom of the knob 5. The sliding clamping ring 4 is thereby released to release the clamping connection between the inner wall of the clamping ring 4 and the outer wall of the top of the fixing column 3, so that the knob 5 can be easily rotated, thereby making the knob 5 drive the rotation of the threaded valve stem 6 through the connecting rod 602, and at the same time, the sliding plate 501 can be pulled, and the knob 5 is driven to rotate by the rotation of the sliding plate 501, and then a longer force arm is provided through the connection between the sliding plate 501 and the knob 5 to facilitate rotation.

[0032] Reference Figure 3 , Figure 4 As shown, both sides of the interior of the pressure reducing valve body 2 are penetrated with accommodating holes 201, and the interior of the accommodating holes 201 is penetrated with a pressure reducing needle tube 202; the ends of the two pressure reducing needle tubes 202 close to the interior of the upper valve body 1 are connected by a connecting ring 203, and the connecting ring 203 is rotatably connected to the outer wall of the threaded valve stem 6. Since the threaded valve stem 6 and the connecting ring 203 are rotatably connected to each other, and one end of the connecting ring 203 is connected to the two pressure reducing needle tubes 202, the pressure reducing needle tube 202 and the interior of the accommodating hole 201 slide with each other, and then when the threaded valve stem 6 rotates, the connecting ring 203 is driven to slide inside the upper valve body 1, thereby driving the pressure reducing needle tube 202 at the bottom to move, thereby realizing adjustment.

[0033] Reference Figure 1 , Figure 4 As shown, the two accommodating holes 201 at the bottom end of the pressure reducing valve body 2 are respectively connected to the bent pipe 7, and the end of the bent pipe 7 away from the pressure reducing valve body 2 is bent away from each other, the end of the bent pipe 7 away from the pressure reducing valve body 2 is connected to the connector 701, and the end of the pressure reducing needle tube 202 close to the inside of the bent pipe 7 is tapered.

[0034] Working principle: when in use, the bent pipes 7 at both ends of the bottom of the pressure reducing valve body 2 can be conveniently connected to the corresponding pipes through the joints 701, and then the clamping ring 4 is first slid to the top when in use, and then the clamping connection between the inner wall of the clamping ring 4 and the outer wall of the top of the fixing column 3 is released, and the knob 5 can be conveniently rotated, so that the knob 5 drives the rotation of the threaded valve stem 6 through the connecting rod 602, and at the same time, the sliding plate 501 can be pulled, and the knob 5 is driven to rotate by the rotation of the sliding plate 501, and then the connection between the sliding plate 501 and the knob 5 provides a longer force arm to facilitate rotation, and then because the threaded valve stem 6 and the connecting ring 203 are rotatably connected to each other, and one end of the connecting ring 203 is connected to the two pressure reducing needle tubes 202, the pressure reducing needle tube 202 and the inside of the accommodating hole 201 slide with each other, and then when the threaded valve stem 6 rotates, the connecting ring 203 is driven to slide inside the upper valve body 1, thereby driving the bottom pressure reducing needle tube 202 to move, thereby realizing adjustment, and after the adjustment is completed The clamping ring 4 is released, so that the extrusion spring 502 can squeeze the clamping ring 4 and make it re-engaged with the top outer wall of the fixing column 3. Since the interior of the clamping ring 4 slides with the connecting rod 602, the clamping ring 4 can limit the rotation of the connecting rod 602, thereby realizing the limitation of the threaded valve stem 6 and preventing it from rotating, and can keep the position of its outer wall connecting ring 203 fixed, while keeping the position of the decompression needle tube 202 fixed. When the threaded valve stem 6 rotates, since it is connected with the spring spring 102, it can effectively drive the spring spring 102 to rotate. When it is necessary to reversely adjust or restore the position of the connecting ring 203, the rotating ring 401 can be pulled again, thereby driving the clamping ring 4 to release the connection with the fixing column 3, thereby releasing the fixing of the connecting rod 602 and the threaded valve stem 6. Driven by the spring spring 102, the threaded valve stem 6 can automatically rotate in the opposite direction, thereby realizing the rapid adjustment of the connecting ring 203, thereby quickly changing the position of the decompression needle tube 202.

[0035] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A pressure reducing valve, comprising an upper valve body (1), a pressure reducing valve body (2) and a fixing column (3), characterized in that: The bottom of the upper valve body (1) is provided with a pressure reducing valve body (2), the top of the upper valve body (1) is provided with a fixing column (3), the top of the fixing column (3) is provided with a clamping ring (4), the top of the clamping ring (4) is provided with a knob (5), and a threaded valve stem (6) is provided through the interior of the upper valve body (1); A fixing block (601) is fixedly connected to the top of the threaded valve stem (6) for adjustment, and a connecting rod (602) is provided at the top of the fixing block (601) penetrating through the fixing column (3) and the inside of the clamping ring (4); A spring spring (102) is arranged near the top of the upper valve body (1) for adjustment, and a partition (103) is arranged at the bottom of the spring spring (102). The spring spring (102) is fixedly connected to the inner wall of the upper valve body (1) and the side wall of the threaded valve stem (6) respectively. A prismatic groove is provided at the bottom of the inner part of the clamping ring (4) for clamping, and a clamping groove corresponding to the prismatic groove at the bottom of the clamping ring (4) is provided on the top outer wall of the fixing column (3), and the clamping ring (4) and the connecting rod (602) are slidably connected to each other.

2. A pressure reducing valve according to claim 1, characterized in that: The top and bottom of the fixing column (3) are provided with grooves, and the groove at the bottom of the fixing column (3) is sleeved with the fixing block (601); A fixing ring (303) is arranged around the outer wall of the fixing column (3), a connecting ring (101) is sleeved on the outer wall of the fixing ring (303), and the connecting ring (101) is connected to the outer wall of the upper valve body (1) by means of threads.

3. A pressure reducing valve according to claim 1, characterized in that: A sealing plug (301) is arranged inside the top groove of the fixed column (3), an extrusion plug (302) is arranged on the top of the sealing plug (301), and a connecting rod (602) passes through the interior of the fixed column (3), the sealing plug (301) and the extrusion plug (302) to be rotatably connected thereto.

4. A pressure reducing valve according to claim 1, characterized in that: The center of the bottom of the knob (5) is fixedly connected to the top of the connecting rod (602), and a sliding plate (501) is slidably connected inside the top of the knob (5), and one end of the sliding plate (501) is slidably connected to the knob (5) via a clamping block.

5. A pressure reducing valve according to claim 1, characterized in that: The outer wall of the clamping ring (4) is connected to a rotating ring (401) in a rotatable manner, and a compression spring (502) is arranged on the top of the clamping ring (4) around the outer wall of the connecting rod (602), and the two ends of the compression spring (502) are respectively connected and fitted to the top of the clamping ring (4) and the bottom of the knob (5).

6. A pressure reducing valve according to claim 1, characterized in that: Both sides of the interior of the pressure reducing valve body (2) are provided with accommodating holes (201) penetrating therethrough, and a pressure reducing needle tube (202) is provided penetrating therethrough inside the accommodating hole (201); The ends of the two decompression needle tubes (202) close to the interior of the upper valve body (1) are connected via a connecting ring (203), and the connecting ring (203) and the outer wall of the threaded valve stem (6) are rotatably connected to each other.

7. A pressure reducing valve according to claim 6, characterized in that: The two receiving holes (201) at the bottom end of the pressure reducing valve body (2) are respectively connected to a bent pipe (7), and the ends of the bent pipe (7) away from the pressure reducing valve body (2) are bent away from each other, the end of the bent pipe (7) away from the pressure reducing valve body (2) is connected to a joint (701), and the end of the pressure reducing needle tube (202) close to the inside of the bent pipe (7) is tapered.

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