A pressure regulating valve that facilitates liquid outlet pressure adjustment

Abstract

This utility model discloses a pressure regulating valve that facilitates the adjustment of liquid outlet pressure, relating to the field of pressure regulating valve technology. It includes a housing, which is cylindrical. Connecting ports are integrally provided on both the left and right sides of the housing. A vertical pipe is fixedly connected to the bottom of the housing. A fixing pipe is integrally connected to the right side of the vertical pipe, and the fixing pipe is inserted into the connecting port on the right side of the housing and fixedly connected to the housing. This utility model utilizes a rotating bolt to move the bolt downwards and compress a spring. The spring force then pushes the valve stem downwards, sealing the through-slot at the bottom of the fixing pipe, thereby reducing the liquid flow rate. The size of the through-slot is controlled by the movement distance of the bolt, thus adjusting the liquid outlet pressure. The overall structure is simple, easy to operate, and convenient to use.

Description

Technical Field

[0001] This utility model relates to the field of regulating valve technology, specifically a pressure regulating valve that facilitates the adjustment of liquid outlet pressure. Background Technology

[0002] A pressure regulating valve is an intuitive and simple flow regulation and control device. It is a type of valve that regulates the outlet pressure by controlling the flow rate of the medium in the conveying pipeline. Pressure regulating valves are widely used in pipelines for conveying household tap water, urban water supply and drainage, and chemical liquids in factories.

[0003] The pressure regulating valve and device disclosed in the prior art (CN217381643U) achieves this by setting the inner diameter of at least one of the inlet and outlet channels to be larger than the inner diameter of the central hole, thus forming a mating part at at least one end of the central hole. The outer diameter of one end of the conical section of the valve core pin is smaller than the inner diameter of the central hole, while the outer diameter of the other end is larger. The outer diameter of the cylindrical section is smaller than the inner diameter of the central hole. Therefore, when gas, liquid, or other fluid is introduced into the inlet channel, the fluid flows to the gap between the cylindrical section and the central hole. If the conical section is close to the mating part, the fluid will not enter the outlet channel. However, if the conical section gradually moves away from the mating part, the flow rate of the fluid entering the outlet channel gradually increases. Thus, by controlling the axial movement of the cylindrical section along the central hole, the distance between the conical section and the mating part can be changed to precisely adjust the opening of the pressure regulating valve. This allows for precise adjustment of the output air pressure. However, this device has many components, resulting in a complex overall structure. It is cumbersome to operate, easily damaged, difficult to maintain, and inconvenient to use. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of existing technologies, such as complex structures that are inconvenient to use, and to provide a pressure regulating valve that facilitates the adjustment of liquid outlet pressure.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a pressure regulating valve for easy adjustment of liquid outlet pressure, comprising a housing, the housing being cylindrical, with integrated connecting pipe ports on both the left and right sides of the housing, a vertical pipe fixedly connected to the bottom of the housing, a fixed pipe integrally connected to the right side of the vertical pipe, the fixed pipe being inserted into the connecting pipe port on the right side of the housing and fixedly connected to the housing, a plurality of annularly arrayed through grooves being opened on the bottom periphery of the vertical pipe, a valve stem being provided inside the fixed pipe, a partition plate being fixedly connected to the top of the fixed pipe, and the top of the valve stem extending above the partition plate, an opening being opened at the top of the housing, and a bolt being inserted into the opening, a nut being provided at the top of the housing, and the nut being threadedly connected to the bolt, a pressure plate being fixedly connected to the bottom end of the bolt, and a spring being connected between the pressure plate and the valve stem.

[0006] As described above, the valve stem includes a vertical rod and an annular rubber block. A connecting plate is fixedly connected to the bottom end of the vertical rod, and the connecting plate is fixedly connected to the inner side of the rubber block. The periphery of the rubber block is in close contact with the inner wall of the fixed pipe.

[0007] As described above, the partition plate has an opening, the bottom of the spring has a movable piece, and the top of the vertical rod passes through the opening and through the movable piece.

[0008] As described above, the opening is provided with an annular rubber ring, and the outer side of the rubber ring is fixedly connected to the partition plate. The movable piece is located inside the rubber ring and is fixedly connected to the rubber ring.

[0009] As described above, the top of the outer casing is open, and the top of the outer casing is provided with a conical top cover. The opening is located on the top of the top cover and is fixedly connected to the top cover with bolts.

[0010] As described above, the outer periphery of the top cover is provided with external threads, and the inner wall of the outer shell is provided with matching internal threads. The partition is located between the top cover and the fixed tube, and the top cover is pressed tightly against the partition. Sealing gaskets are fixedly connected to the top and bottom of the partition.

[0011] Compared with the prior art, this pressure regulating valve that facilitates liquid pressure adjustment has the following advantages: By rotating the bolt, the bolt moves down and compresses the spring, and then the spring force pushes the valve stem down to close the through groove at the bottom of the fixed pipe, thereby reducing the liquid flow rate. The size of the through groove is controlled according to the movement distance of the screw, thereby adjusting the liquid pressure at the outlet of the shell. The overall structure is simple, easy to operate, and convenient to use.

[0012] Other advantages, objectives and features of this invention will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art from the following examination or study, or may be taught from the practice of this invention. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0014] Figure 2 This is a schematic diagram of the internal structure of the present invention;

[0015] Figure 3 This is a schematic diagram of the vertical tube structure of this utility model;

[0016] Figure 4 This is a schematic diagram of the valve stem structure of this utility model.

[0017] In the diagram: 1. Outer shell; 2. Top cover; 3. Bolt; 4. Nut; 5. Vertical pipe; 6. Fixed pipe; 7. Valve stem; 701. Vertical rod; 702. Rubber block; 8. Pressure plate; 9. Partition plate; 10. Rubber ring; 11. Movable piece; 12. Sealing gasket. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] like Figure 1-4 As shown, this utility model provides a technical solution: a pressure regulating valve for easy adjustment of liquid outlet pressure, including a shell 1, which is cylindrical. Connecting ports are integrally provided on both the left and right sides of the shell 1. A vertical pipe 5 is fixedly connected to the bottom of the shell 1. A fixing pipe 6 is integrally connected to the right side of the vertical pipe 5. The fixing pipe 6 is inserted into the connecting port on the right side of the shell 1 and is fixedly connected to the shell 1. Several annularly arrayed through grooves are opened on the bottom periphery of the vertical pipe 5. A valve stem 7 is provided inside the fixing pipe 6. A partition plate 9 is fixedly connected to the top of the fixing pipe 6, and the top of the valve stem 7 extends above the partition plate 9. An opening is opened at the top of the shell 1, and a bolt 3 is inserted into the opening. A nut 4 is provided at the top of the shell 1, and the nut 4 is threaded onto the bolt 3. A pressure plate 8 is fixedly connected to the bottom of the bolt 3, and a spring is connected between the pressure plate 8 and the valve stem 7.

[0020] According to the overall structure of the device, during use, the valve body is installed on the liquid delivery pipeline. The left connecting pipe port is the liquid inlet, and the right connecting pipe port is the liquid outlet. The liquid enters the valve body from the left side, first filling the outside of the fixed pipe 6, and then entering the inside of the fixed pipe 6 through the through groove. Finally, it flows out from the right side of the fixed pipe 6. During adjustment, the bolt 3 is rotated, and the bolt 3 is moved down through the nut 4, thereby compressing the spring. The spring returns to its original deformation and pushes the valve stem 7 down, thereby closing the through groove and reducing the liquid flow rate, thus reducing the liquid outlet pressure. By controlling the distance that the bolt 3 moves down, the size of the through groove closure is controlled, thereby adjusting the liquid outlet pressure.

[0021] like Figure 4 As shown, the valve stem 7 includes a vertical rod 701 and an annular rubber block 702. A connecting plate is fixedly connected to the bottom end of the vertical rod 701, and the connecting plate is fixedly connected to the inner side of the rubber block 702. The periphery of the rubber block 702 is tightly attached to the inner wall of the fixed pipe 6.

[0022] The spring pushes the vertical rod 701 downward, which in turn moves the rubber block 702 downward, sealing the through groove at the bottom of the fixed tube 6, thereby reducing the flow rate of the liquid and thus lowering the outlet pressure.

[0023] like Figure 4 As shown, the partition 9 has an opening, the bottom of the spring has a movable piece 11, the top of the vertical rod 701 passes through the opening and through the movable piece 11, the opening has an annular rubber ring 10, and the outer side of the rubber ring 10 is fixedly connected to the partition 9. The movable piece 11 is located inside the rubber ring 10 and is fixedly connected to the rubber ring 10.

[0024] The lower liquid flow space is separated from the upper spring and other components by the partition 9. The movable plate 11 and the rubber ring 10 facilitate the up and down movement of the valve stem 7. The rubber ring 10 provides a seal between the movable plate 11 and the partition 9 to prevent liquid from leaking upward and prevent liquid from entering and causing the spring to rust, which would affect the use of the valve body.

[0025] like Figure 2 As shown, the top of the outer casing 1 is open, and the top of the outer casing 1 is provided with a conical top cover 2. The opening is located on the top of the top cover 2, and the bolt 3 is fixedly connected to the top cover 2. The outer periphery of the top cover 2 is provided with external threads, and the inner wall of the outer casing 1 is provided with matching internal threads. The partition 9 is located between the top cover 2 and the fixed tube 6, and the top cover 2 is pressed tightly on the partition 9. The top and bottom of the partition 9 are fixedly connected with sealing gaskets 12.

[0026] The threaded structure facilitates the disassembly and assembly of the top cover 2, while the partition 9 can be removed to take out the valve stem 7, thereby facilitating the disassembly of the outer casing 1 and the maintenance and replacement of internal components.

[0027] Working principle: When in use, the valve body is installed on the liquid delivery pipeline. The left connecting pipe port is the liquid inlet, and the right connecting pipe port is the liquid outlet. The liquid enters the valve body from the left side, first filling the outside of the fixed pipe 6, and then entering the inside of the fixed pipe 6 through the through groove. Finally, it flows out from the right side of the fixed pipe 6. During adjustment, the bolt 3 is rotated, and the nut 4 moves the bolt 3 down, thereby compressing the spring. The spring returns to its original shape and pushes the valve stem 7 down, thereby closing the through groove and reducing the liquid flow rate, thus reducing the outlet pressure. By controlling the distance the bolt 3 moves down, the size of the through groove closure is controlled, thereby adjusting the outlet pressure. When maintaining, the top cover 2 can be unscrewed to remove the internal components for maintenance or replacement.

[0028] Although 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 alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A pressure regulating valve for facilitating outlet pressure regulation, comprising a housing (1), characterized in that: The outer shell (1) is cylindrical, and connecting pipe openings are integrally provided on both the left and right sides of the outer shell (1). A vertical pipe (5) is fixedly connected to the bottom of the inner shell (1). A fixed pipe (6) is integrally connected to the right side of the vertical pipe (5). The fixed pipe (6) is inserted into the connecting pipe opening on the right side of the outer shell (1) and is fixedly connected to the outer shell (1). Several annular array-shaped through slots are opened on the bottom periphery of the vertical pipe (5). A valve stem (7) is provided inside the fixed pipe (6). A partition plate (9) is fixedly connected to the top of the fixed pipe (6), and the top of the valve stem (7) extends above the partition plate (9). An opening is opened at the top of the outer shell (1), and a bolt (3) is inserted into the opening. A nut (4) is provided at the top of the outer shell (1), and the nut (4) is threaded to the outside of the bolt (3). A pressure plate (8) is fixedly connected to the bottom of the bolt (3). A spring is connected between the pressure plate (8) and the valve stem (7).

2. The pressure regulating valve for facilitating outlet pressure regulation according to claim 1, wherein: The valve stem (7) includes a vertical rod (701) and an annular rubber block (702). A connecting plate is fixedly connected to the bottom end of the vertical rod (701), and the connecting plate is fixedly connected to the inner side of the rubber block (702). The periphery of the rubber block (702) is in close contact with the inner wall of the fixed tube (6).

3. The pressure regulating valve for facilitating outlet pressure regulation of claim 2, wherein: An opening is provided on the partition (9), a movable piece (11) is provided at the bottom of the spring, and the top of the vertical rod (701) passes through the opening and through the movable piece (11).

4. The pressure regulating valve for facilitating outlet pressure regulation of claim 3, wherein: The opening is provided with an annular rubber ring (10), and the outer side of the rubber ring (10) is fixedly connected to the partition plate (9). The movable piece (11) is located inside the rubber ring (10) and is fixedly connected to the rubber ring (10).

5. The pressure regulating valve for facilitating outlet pressure regulation of claim 1, wherein: The top of the outer shell (1) is open, and the top of the outer shell (1) is provided with a conical top cover (2). The opening is located on the top of the top cover (2), and the bolt (3) is fixedly connected to the top cover (2).

6. The pressure regulating valve for facilitating outlet pressure regulation of claim 5, wherein: The top cover (2) has an external thread on its outer periphery, and the inner wall of the outer shell (1) has a matching internal thread. The partition (9) is located between the top cover (2) and the fixed tube (6), and the top cover (2) is pressed tightly on the partition (9). The top and bottom of the partition (9) are fixedly connected with sealing gaskets (12).

Images