Novel pressure regulating valve

Abstract

The novel pressure regulating valve comprises a valve body, a liquid inlet channel, a first cavity and a liquid outlet channel are formed in the valve body, a one-way valve is arranged in the liquid outlet channel, a pressure relief channel and a mounting cavity are further formed in the valve body, and the pressure relief channel and the mounting cavity are located on the two sides of the first cavity respectively and communicate with the first cavity; a valve rod is connected into the mounting cavity in a sliding mode, the end of the valve rod penetrates through the first cavity and extends into the pressure relief channel, a plugging block is arranged at the end, extending into the pressure relief channel, of the valve rod and used for plugging a channel opening, communicated with the first cavity, of the pressure relief channel, and an elastic piece is arranged in the mounting cavity. The elastic force of the elastic piece acts on the valve rod, and the valve rod is driven to move towards the pressure relief channel all the time. When the valve body is used, gas in the valve body can be automatically exhausted, and the cavitation phenomenon is reduced.

Description

Technical Field

[0001] The present invention relates to the field of valves, and in particular to a novel pressure regulating valve. Background Art

[0002] Chinese patent publication number CN114251494B discloses a full-unload pressure-regulating valve, which cleverly utilizes the water pressure changes in the internal channel of the pressure-regulating valve after the injection component is closed or opened to achieve automatic pressure relief and reset. By providing a micro switch and a ejector pin, the external power machine can be automatically opened and closed when the injection component is closed or opened, saving energy loss, which is clever.

[0003] However, this pressure regulating valve cannot expel the air in the valve body when it is started. After the valve body is started, the residual gas inside the valve body is likely to form bubbles. These bubbles burst rapidly in the high-pressure area, generating high-frequency vibration and impact force, which may damage the valve body structure or sealing components. Summary of the Invention

[0004] The present application provides a new type of pressure regulating valve, which can automatically discharge the gas in the valve body when the valve body is in use, thereby reducing the occurrence of cavitation.

[0005] The new pressure regulating valve provided in this application adopts the following technical solution: A new type of pressure-regulating valve includes a valve body, wherein the valve body is provided with a liquid inlet channel, chamber one, and a liquid outlet channel, a one-way valve is provided in the liquid outlet channel, and a pressure relief channel and an installation chamber are also provided in the valve body, wherein the pressure relief channel and the installation chamber are respectively located on both sides of chamber one and are both connected with chamber one; a valve stem is slidably connected in the installation chamber, and the end of the valve stem passes through chamber one and extends into the pressure relief channel, and a blocking block is provided on the end of the valve stem extending into the pressure relief channel, and the blocking block is used to block the channel opening connecting the pressure relief channel and chamber one; an elastic member is provided in the installation chamber, and the elastic force of the elastic member acts on the valve stem, always driving the valve stem to move toward the pressure relief channel.

[0006] Preferably, the elastic member 1 is a spring 1, the valve stem includes a rod body and a slide seat, an annular groove is provided on the slide seat, the spring 1 is located on the side of the slide seat away from the chamber 1 and is sleeved on the rod body, one end of the spring 1 is in conflict with the side wall of the installation cavity away from the chamber 1, and the other end of the spring 1 extends into the annular groove and in conflict with the slide seat.

[0007] Preferably, a reflux channel is provided in the valve body, the reflux channel connects the liquid outlet channel and the installation cavity, and the channel opening where the reflux channel connects to the installation cavity is located on the side of the slide away from the chamber, and the channel opening will not be blocked during the sliding process of the slide.

[0008] Preferably, the one-way valve includes a valve seat, a valve head slidably connected to the valve seat, and a second spring arranged inside the valve seat, the second spring is used to press the valve head against the channel opening connected to the liquid outlet channel and chamber 1 so that the valve head blocks the channel opening; the valve head is provided with a first through-hole and a second through-hole, and the valve seat is provided with a third through-hole; in the initial state, the valve seat blocks the first through-hole, and the second through-hole is connected to the reflux channel; when the valve head moves into the valve seat, the first through-hole is connected to the third through-hole, and the reflux channel is connected to the liquid outlet channel.

[0009] Preferably, a micro switch for controlling the opening and closing of an external power device is installed at the bottom of the valve body, and a trigger mechanism is slidably connected in the valve body. When the blocking block moves away from the chamber, it temporarily pushes the trigger mechanism to move, so that the trigger mechanism abuts the micro switch.

[0010] Preferably, the touch mechanism includes a touch rod slidably connected to the valve body and a spring three arranged in the valve body, the touch rod is located between the micro switch and the blocking block; the spring three is set on the touch rod, one end of the spring three is in contact with the valve body, and the other end of the spring three is in contact with the touch rod, the spring three always drives the touch rod to move toward chamber one, and the elastic force of the spring three is less than the elastic force of the spring one.

[0011] Preferably, the valve body is provided with an adjusting cavity, which is connected to the installation cavity. The adjusting cavity is located on the side of the installation cavity away from chamber one, and the end of the rod body extends into the adjusting cavity. The adjusting cavity is threaded with an adjusting bolt, and the adjusting bolt extends out of the valve body.

[0012] The technical effects of the present invention are mainly reflected in the following aspects: 1. In the initial stage of the valve body, when external water flows into the valve body, the air in the valve body will be squeezed out through the pressure relief channel. Later, when the water pressure in the valve body increases, the water flow will push the valve stem and the blocking block upward to isolate the chamber 1 from the pressure relief channel. 2. When the external injection component is closed, the high-pressure water flow will flow back and enter the installation chamber 1 through the reflux channel. The pressure of the reflux water flow is greater than the water flow in the chamber 1. Therefore, the reflux water flowing into the installation chamber 1 will push the slide to move closer to the chamber 1, so that the blocking block no longer blocks the channel opening connecting the pressure relief channel and the chamber 1, and the water in the valve body can be discharged from the pressure relief channel. 3. The present invention improves the valve body structure and replaces the pressure-regulating spring in the comparative document with a spring 1. The pressure-regulating spring in the comparative document has the defects of being difficult to regulate the pressure and difficult to install. However, when selecting the spring 1 of the present application, it is only necessary to ensure that the elastic force of the spring 1 is less than the internal pressure of the valve body when the valve body is working. There are many springs to choose from and they are easy to install. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural diagram of the valve body without a micro switch installed.

[0014] Figure 2 This is a cross-sectional view of the valve body with a micro switch installed when not in use.

[0015] Figure 3 yes Figure 1 Schematic diagram of the structure when the middle valve body is in use.

[0016] Figure 4 hour Figure 3 A partial enlarged view of point A in the middle.

[0017] Figure 5 It is a structural diagram of a one-way valve.

[0018] Figure 6 yes Figure 5 Cross-sectional view of the one-way valve along line BB.

[0019] Figure 7 It is a structural diagram of the valve seat.

[0020] Figure 8 It is a structural diagram of the valve head.

[0021] Figure numerals: 1. Valve body; 11. Liquid inlet channel; 12. Chamber 1; 13. Liquid outlet channel; 14. Pressure relief channel; 15. Installation chamber; 16. Return channel; 17. Micro switch; 18. Adjustment chamber; 19. Adjustment bolt; 2. One-way valve; 21. Valve seat; 211. Slide groove; 22. Valve head; 221. Slider; 23. Spring 2; 24. Perforation 1; 25. Perforation 2; 26. Perforation 3; 3. Valve stem; 31. Rod body; 32. Slide seat; 33. Ring groove; 4. Sealing block; 5. Elastic member; 51. Spring 1; 6. Trigger mechanism; 61. Touch rod; 62. Spring 3. DETAILED DESCRIPTION

[0022] The present invention is further described in detail below with reference to the accompanying drawings to make the technical solution of this application easier to understand and grasp.

[0023] Reference Figure 1 and Figure 2 The novel pressure-regulating valve of this embodiment includes a valve body 1, which is provided with a liquid inlet channel 11, a chamber 12, and a liquid outlet channel 13, which are interconnected. The valve body 1 also includes a pressure relief channel 14 and an installation chamber 15, which are located on either side of and communicate with chamber 12.

[0024] Reference Figure 2A valve stem 3 is disposed within the mounting chamber 15. The valve stem 3 comprises a rod body 31 and a slide 32. The slide 32 is slidably connected within the mounting chamber 15. One end of the valve stem 3 passes through chamber 12 and extends into the pressure relief passage 14. A blocking block 4 is disposed at the end of the valve stem 3 extending into the pressure relief passage 14. The blocking block 4 has a diameter greater than the diameter of the passageway connecting the exhaust passage and chamber 12. When the slide 32 and the rod body 31 are moved away from the pressure relief passage 14 by an external force, they carry the blocking block 4 with them, thereby blocking the passageway connecting the pressure relief passage 14 and chamber 12.

[0025] Reference Figure 2 An elastic member 5 is disposed within the mounting chamber 15. The elastic force of the elastic member 5 acts on the slide 32, constantly driving the slide 32 toward the pressure relief passage 14. An annular groove 33 is defined in the slide 32. A spring 1 51 is located on the side of the slide 32 away from the chamber 12 and is sleeved onto the rod 31. One end of the spring 1 51 abuts against the sidewall of the mounting chamber 15 away from the chamber 12. The other end of the spring 1 51 extends into the annular groove 33 and abuts against the slide 32.

[0026] Reference Figure 2 The valve body 1 is provided with an adjusting chamber 18, which is connected to the installation chamber 15 and is located on the side of the installation chamber 15 away from the chamber 12. The end of the rod 31 not mounted with the blocking block 4 extends into the adjusting chamber 18. An adjusting bolt 19 is threadedly connected to the adjusting chamber 18 and extends out of the valve body 1.

[0027] Reference Figure 2 A micro switch 17 for controlling the opening and closing of an external power device is installed at the bottom of the valve body 1. A touch mechanism 6 is slidably connected inside the valve body 1. When the blocking block 4 moves away from the chamber 12, it pushes the touch mechanism 6 to move so that the touch mechanism 6 abuts the micro switch 17.

[0028] Reference Figure 2 The trigger mechanism 6 includes a touch rod 61 slidably connected to the valve body 1 and a spring 3 62 disposed within the valve body 1. The touch rod 61 is located between the microswitch 17 and the blocking block 4. The spring 3 62 is sleeved on the touch rod 61. One end of the spring 3 62 contacts the valve body 1, while the other end of the spring 3 62 contacts the touch rod 61. The spring 3 62 constantly drives the touch rod 61 toward the chamber 12. The elastic force of the spring 3 62 is less than the elastic force of the spring 1 51.

[0029] Reference Figure 2 When the valve body 1 is not in use, the spring 1 51 presses the slide 32 against the side wall of the installation cavity 15 close to the chamber 12. At this time, the blocking block 4 is located at the position farthest from the chamber 12. The blocking block 4 presses the touch rod 61 so that the end of the touch rod 61 contacts the micro switch 17. At the same time, the spring 3 62 is in a compressed state.

[0030] Reference Figure 3-Figure 8 A one-way valve 2 is installed in the liquid outlet channel 13. The one-way valve 2 includes a valve seat 21 installed in the liquid outlet channel 13, a valve head 22 slidably connected to the valve seat 21, and a second spring 23 disposed within the valve seat 21. The second spring 23 is located on the side of the valve head 22 away from the first chamber 12. The second spring 23 is used to press the valve head 22 against the channel opening connecting the liquid outlet channel 13 and the first chamber 12, thereby sealing the channel opening.

[0031] Reference Figure 3 A reflux channel 16 is provided in the valve body 1, and the reflux channel 16 is connected to the liquid outlet channel 13 and the installation cavity 15. The channel opening where the reflux channel 16 communicates with the installation cavity 15 is located on the side of the slide 32 away from the chamber, and the channel opening will not be blocked during the sliding process of the slide 32.

[0032] Reference Figure 4-Figure 8 The valve head 22 is symmetrically defined with two first through-holes 24 and one second through-hole 25. Both the first through-holes 24 and the second through-hole 25 connect the valve head 22 and the internal cavity of the valve seat 21. The valve head 22 is also symmetrically defined with two third through-holes 26, located on either side of the motion path of the two first through-holes 24. To prevent the valve head 22 from rotating relative to the slide seat 32 during sliding, a sliding groove 211 is defined on the inner wall of the valve seat 21, and a slider 221 is provided on the outer wall of the valve head 22. The slider 221 slides along the axial direction of the valve seat 21 and is connected to the sliding groove 211.

[0033] Reference Figure 4-Figure 8 In the initial state, the valve seat 21 blocks the two through-holes 1 24, and the through-hole 2 25 is connected to the reflux channel 16, so that the reflux channel 16 is connected to the valve head 22 and the cavity inside the valve seat 21; when the valve head 22 is pressurized and moves axially along the valve seat 21 (leaving the initial blocking position), the through-hole 1 24 is connected to the through-hole 3 26.

[0034] Reference Figure 4-Figure 8 After the external injection component is closed, due to the water hammer effect, when the backflow enters the valve seat 21, it will push the valve head 22 to move so that the valve seat 21 blocks the two perforations 24. In this way, the backflow liquid will directly flow into the reflux channel 16 through the perforation 26, thereby reducing the energy of the backflow liquid during the flow process, so that the liquid entering the installation cavity 15 through the reflux channel 16 has better kinetic energy, which can quickly and efficiently promote the movement of the slide 32, thereby improving the pressure relief speed and pressure relief efficiency of the valve body 1.

[0035] Reference Figures 1-8 , the usage status of the valve body 1 of this application is as follows: First, connect the valve body 1 to the external power equipment and the injection component, then start the external power equipment. The external power equipment presses the liquid into the liquid inlet channel 11 and chamber 12. The liquid pressed into the valve body 1 will press the air in the valve body 1 into the pressure relief channel 14 and be discharged through the pressure relief channel 14.

[0036] As the hydraulic pressure within valve body 1 gradually increases, the liquid entering chamber 12 pushes slide 32 toward regulating chamber 18. As slide 32 moves toward regulating chamber 18, it pulls rod 31 and blocking block 4 along with it, causing blocking block 4 to move toward chamber 12. Ultimately, blocking block 4 blocks chamber 12 and pressure relief passage 14, ensuring stable hydraulic pressure within valve body 1. As blocking block 4 approaches chamber 12, spring 3 62 rebounds, causing contact rod 61 to move closer to chamber 12 and out of contact with microswitch 17.

[0037] When high-pressure liquid flows into chamber 12, it squeezes valve head 22, pushing it into valve seat 21 and into contact with it. This allows outlet channel 13 to communicate with chamber 12, two through-holes 1 24 to connect with two through-holes 3 26, and reflux channel 16 to connect with outlet channel 13. Liquid entering chamber 12 then flows into outlet channel 13. Liquid entering outlet channel 13 passes through reflux channel 16 and pre-fills mounting cavity 15. Simultaneously, liquid entering outlet channel 13 flows through two through-holes 3 26 and two through-holes 1 24 into the internal cavity of valve seat 21, and then flows into the external injection assembly.

[0038] After the external injection component is subsequently closed, due to the water hammer effect, the liquid between the valve body 1 and the injection component will flow back into the valve seat 21. The liquid flowing into the valve seat 21 will push the valve head 22 to move to the initial blocking position, allowing the valve seat 21 to block the chamber 12 and the liquid outlet channel 13. At this time, the valve seat 21 blocks the two perforations 1 24, and the perforation 2 25 is reconnected to the reflux channel 16.

[0039] Liquid flowing back into the valve seat 21 flows directly into the installation chamber 15 through the second perforation 25 and the reflux channel 16. The liquid flowing into the installation chamber 15 pushes the slide 32 toward the chamber 1 12, so that the blocking block 4 no longer blocks the chamber 12 and the pressure relief channel 14. The liquid in the chamber 1 12 can enter the pressure relief channel 14 and be discharged from the valve body 1, thereby achieving the purpose of pressure relief.

[0040] When active pressure regulation is required, the adjusting bolt 19 is turned so that the adjusting bolt 19 contacts the rod 31 and pushes the rod 31 and the blocking block 4 away from the chamber 12, so that the blocking block 4 no longer blocks the pressure relief passage 14 and the chamber 12. At this time, a portion of the liquid that has entered the chamber 12 will flow into the pressure relief passage 14 through the gap between the blocking block 4 and the pressure relief passage 14. By turning the adjusting bolt 19, the size of the gap between the blocking block 4 and the pressure relief passage 14 can be controlled, thereby controlling the flow rate of the liquid flowing from the chamber 12 to the liquid outlet passage 13, thereby indirectly regulating the pressure of the liquid flowing from the chamber 12 into the liquid outlet passage 13.

[0041] When the blocking block 4 moves further away from the chamber 12, the blocking block 4 will come into contact with the feeler rod 61 and push the feeler rod 61 to move away from the chamber 12, and finally the feeler rod 61 will come into contact with the micro switch 17, thereby triggering the micro switch 17, and the external power device will be turned off through the micro switch 17, so that it stops transporting liquid into the valve body 1.

[0042] Of course, the above are only typical examples of the present application. In addition, the present application may have many other specific implementation methods. Any technical solutions formed by equivalent replacement or equivalent transformation fall within the scope of protection required by the present application.

Claims

1. A novel pressure regulating valve, comprising a valve body (1), wherein the valve body (1) is provided with a liquid inlet channel (11), a chamber (12), and a liquid outlet channel (13), wherein a one-way valve (2) is provided in the liquid outlet channel (13), and wherein: The valve body (1) is further provided with a pressure relief channel (14) and an installation cavity (15), the pressure relief channel (14) and the installation cavity (15) are respectively located on both sides of chamber one (12) and are both connected to chamber one (12); a valve stem (3) is slidably connected to the installation cavity (15), the end of the valve stem (3) passes through chamber one (12) and extends into the pressure relief channel (14), a blocking block (4) is provided on the end of the valve stem (3) extending into the pressure relief channel (14), the blocking block (4) is used to block the channel opening connecting the pressure relief channel (14) and chamber one (12), an elastic member (5) is provided in the installation cavity (15), the elastic force of the elastic member (5) acts on the valve stem (3), and always drives the valve stem (3) to move toward the pressure relief channel (14).

2. A new pressure regulating valve according to claim 1, characterized in that: The elastic member (5) is a spring (51), and the valve stem (3) includes a rod body (31) and a slide seat (32). An annular groove (33) is provided on the slide seat (32). The spring (51) is located on the side of the slide seat (32) away from the chamber (12) and is sleeved on the rod body (31). One end of the spring (51) is in contact with the side wall of the mounting cavity (15) away from the chamber (12), and the other end of the spring (51) extends into the annular groove (33) and is in contact with the slide seat (32).

3. A new pressure regulating valve according to claim 2, characterized in that: A reflux channel (16) is provided in the valve body (1), and the reflux channel (16) is connected to the liquid outlet channel (13) and the installation cavity (15). The channel opening where the reflux channel (16) communicates with the installation cavity (15) is located on the side of the slide (32) away from the cavity, and the channel opening will not be blocked during the sliding process of the slide (32).

4. A new pressure regulating valve according to claim 3, characterized in that: The one-way valve (2) comprises a valve seat (21), a valve head (22) slidably connected to the valve seat (21), and a second spring (23) provided in the valve seat (21), wherein the second spring (23) is used to press the valve head (22) against the channel opening connecting the liquid outlet channel (13) and the chamber (12) so that the valve head (22) blocks the channel opening; the valve head (22) is provided with a first perforation (24) and a second perforation (25), and the valve seat (21) is provided with a third perforation (26); in an initial state, the valve seat (21) blocks the first perforation (24), and the second perforation (25) is connected to the return channel (16); when the valve head (22) moves into the valve seat (21), the first perforation (24) is connected to the third perforation (26), and the return channel (16) is connected to the liquid outlet channel (13).

5. A new pressure regulating valve according to claim 3, characterized in that: A micro switch (17) for controlling the opening and closing of an external power device is installed at the bottom of the valve body (1), and a trigger mechanism (6) is slidably connected inside the valve body (1). When the blocking block (4) moves away from chamber 1 (12), it pushes the trigger mechanism (6) to move, so that the trigger mechanism (6) abuts the micro switch (17).

6. A new type of pressure regulating valve according to claim 5, characterized in that: The touch mechanism (6) includes a touch rod (61) slidably connected to the valve body (1) and a spring (62) provided in the valve body (1), wherein the touch rod (61) is located between the micro switch (17) and the blocking block (4); the spring (62) is sleeved on the touch rod (61), one end of the spring (62) contacts the valve body (1), and the other end of the spring (62) contacts the touch rod (61), and the spring (62) always drives the touch rod (61) to move toward the chamber (12), and the elastic force of the spring (62) is less than the elastic force of the spring (51).

7. A new type of pressure regulating valve according to claim 2, characterized in that: The valve body (1) is provided with an adjusting chamber (18), the adjusting chamber (18) is communicated with the installation chamber (15), the adjusting chamber (18) is located on the side of the installation chamber (15) away from chamber one (12), the end of the rod body (31) extends into the adjusting chamber (18), the adjusting chamber (18) is threadedly connected to an adjusting bolt (19), and the adjusting bolt (19) extends out of the valve body (1).

Images