A safety type stainless steel wire threaded reducing valve

Abstract

The present invention discloses a safe stainless steel wire-threaded pressure reducing valve. The technical solution is as follows: It includes a pressure reducing valve body. A end cover is provided at the top of the pressure reducing valve body. The pressure reducing valve body and the end cover are fixed by bolts. A water outlet pipe is provided on one side of the pressure reducing valve body, and a water inlet pipe is provided on the other side of the pressure reducing valve body. A pressure regulating mechanism is provided inside the pressure reducing valve body, and a filtering mechanism is provided on one side of the water inlet pipe; The pressure regulating mechanism includes a support plate. The support plate is fixedly arranged inside the pressure reducing valve body. A guide rod is provided on one side of the support plate. The guide rod penetrates through the support plate and is slidably connected to the support plate. One end of the guide rod is fixedly connected with a pressing block. Two toothed plates are fixedly connected to the bottom of the pressing block. A gear is meshed and connected to one side of each of the two toothed plates. The beneficial effects of the present invention are: The reaction rate of adjustment is fast, the pressure difference adjustment efficiency is high, it has the function of filtering impurities in the fluid, avoids the holes being blocked by impurities, facilitates the use of the pressure reducing valve, and improves the service life of the pressure valve.

Description

Technical Field

[0001] The present invention relates to the technical field of pressure reducing valves, and particularly to a safe stainless steel threaded port pressure reducing valve. Background Art

[0002] A pressure reducing valve adjusts the inlet pressure to a required outlet pressure through regulation, and relies on the energy of the medium itself to automatically maintain the stability of the 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 the kinetic energy of the fluid are changed, resulting in different pressure losses, so as to achieve the purpose of pressure reduction. Then, relying on the regulation of the control and regulation system, the fluctuation of the pressure behind the valve is balanced with the spring force, so that the pressure behind the valve remains constant within a certain error range.

[0003] When the existing pressure reducing valve adjusts the pressure, the adjustment reaction rate is low, resulting in low pressure difference adjustment efficiency, and the pressure reducing valve does not have the function of filtering impurities in the fluid, resulting in impurities easily blocking the holes, affecting the use of the pressure reducing valve and shortening the service life of the pressure valve. Summary of the Invention

[0004] Therefore, the present invention provides a safe stainless steel threaded port pressure reducing valve to solve the problems that the adjustment reaction rate is low, resulting in low pressure difference adjustment efficiency, and the pressure reducing valve does not have the function of filtering impurities in the fluid, resulting in impurities easily blocking the holes, affecting the use of the pressure reducing valve and shortening the service life of the pressure valve.

[0005] To achieve the above object, the present invention provides the following technical solution: A safe stainless steel threaded port pressure reducing valve, including a pressure reducing valve body, a end cover is provided at the top of the pressure reducing valve body, the pressure reducing valve body and the end cover are fixed by bolts, a water outlet pipe is provided on one side of the pressure reducing valve body, a water inlet pipe is provided on the other side of the pressure reducing valve body, a pressure adjustment mechanism is provided inside the pressure reducing valve body, and a filtering mechanism is provided on one side of the water inlet pipe;

[0006] The pressure adjustment mechanism includes a support plate, the support plate is fixedly arranged inside the pressure reducing valve body, a guide rod is provided on one side of the support plate, the guide rod penetrates through the support plate and is slidably connected with the support plate, one end of the guide rod is fixedly connected with a pressing block, two toothed plates are fixedly connected to the bottom of the pressing block, one side of each of the two toothed plates is meshed with a gear, a support block is provided at the bottom of the pressing block, the support block is fixedly arranged at the bottom of the pressure reducing valve body, both sides of the support block are connected with connecting rods through bearings, the two connecting rods respectively penetrate through the two gears and are fixedly connected with the two gears, one end of each of the two connecting rods is fixedly connected with a sliding stopper, and fixing stoppers are sleeved outside the two connecting rods, one of the fixing stoppers is fixedly arranged inside the water inlet pipe, and the other fixing stopper is arranged inside the water outlet pipe.

[0007] Preferably, the filtering mechanism includes a guide sleeve disposed inside the water inlet pipe. A filter screen is embedded on one side of the guide sleeve. A fixing sleeve is provided on one side of the guide sleeve. A groove is formed on one side of the guide sleeve. The groove is threadedly connected to the fixing sleeve. Sliders are fixedly provided on both sides of the fixing sleeve. Two sliding grooves are formed on the inner side wall of the water inlet pipe. The two sliders are respectively slidably connected inside the two sliding grooves. A connecting pipe is provided on one side of the guide sleeve. A sleeve is sleeved outside the water inlet pipe. The sleeve is threadedly connected to the connecting pipe.

[0008] Preferably, two bottom sleeves are fixedly embedded at the bottom of the inner cavity of the pressure reducing valve. One ends of the two toothed plates respectively extend into the two bottom sleeves.

[0009] Preferably, a diaphragm is fixedly sleeved outside the guide rod.

[0010] Preferably, a support block is fixedly connected to the top end of the guide rod. A first spring is fixedly connected to the top of the support block. A pressing plate is fixedly connected to the top of the first spring. The top end of the pressing plate is connected to a threaded rod through a bearing. The threaded end of the threaded rod penetrates through the top of the end cover and is threadedly connected to the top of the end cover. A knob is fixedly connected to the top of the threaded rod.

[0011] Preferably, a through hole is formed on one side of the support plate.

[0012] Preferably, pressure gauges are fixedly connected to one sides of both the water outlet pipe and the water inlet pipe.

[0013] Preferably, a gasket is provided between the connecting pipe and the guide sleeve.

[0014] Preferably, a connecting ring is fixedly connected to one side of the fixing sleeve. A second spring is fixedly connected to one side of the connecting ring. A support ring is fixedly connected to the other side of the second spring. A plurality of support rods are fixedly connected to the outside of the support ring. All the plurality of support rods are fixedly connected to the inner side wall of the water inlet pipe.

[0015] The embodiments of the present invention have the following advantages:

[0016] 1. When the pressure of the fluid is greater than the elastic force of the first spring, the pressure pushes the diaphragm to move upward, causing the diaphragm to push the guide rod to move upward. The guide rod pushes the first spring to compress. At the same time, the pressing block at the bottom of the guide rod will drive the toothed plate to move upward together. The toothed plate drives the two gears to rotate, causing the two gears to drive the connecting rod to rotate. The connecting rod drives the sliding block to rotate, so that the sliding block blocks a part of the through port, thereby reducing the input of the fluid, and further achieving the purpose of automatic pressure reduction. The adjustment reaction rate is fast, and the pressure difference adjustment efficiency is high;

[0017] 2. Clamp the filter net on one side of the guide sleeve, rotatably connect the groove on one side of the guide sleeve with the fixed sleeve, so that the fixed sleeve limits the filter net. At the same time, connect the connecting pipe with the guide sleeve, so that the connecting pipe pushes the guide sleeve to move. The sliders on both sides of the fixed sleeve connected to the guide sleeve slide in the chute. At the same time, the connecting ring compresses the second spring, rotates the sleeve and connects it with the connecting pipe through threads, so that the connection between the connecting pipe and the guide sleeve is completed, with the function of filtering impurities in the fluid, avoiding the blockage of holes by impurities, facilitating the use of the pressure reducing valve, and prolonging the service life of the pressure valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only exemplary, and for those of ordinary skill in the art, other implementation drawings can be obtained by extension based on the provided drawings without creative efforts.

[0019] The structures, ratios, sizes, etc. shown in this specification are only used to cooperate with the content disclosed in the specification for those who are familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the present invention. Therefore, they do not have technical substance. Any modification of the structure, change of the proportional relationship, or adjustment of the size should still fall within the scope covered by the technical content disclosed in the present invention without affecting the effects that the present invention can produce and the purposes that can be achieved.

[0020] Figure 1 It is the overall structure schematic diagram provided by the present invention;

[0021] Figure 2 It is the overall structure sectional view provided by the present invention;

[0022] Figure 3 It is the three-dimensional view of the pressure regulating mechanism provided by the present invention;

[0023] Figure 4 It is the three-dimensional view of the guide sleeve provided by the present invention;

[0024] Figure 5 It is the three-dimensional view of the filter net provided by the present invention;

[0025] Figure 6 It is provided by the present invention Figure 2 The enlarged view of the structure at A in

[0026] In the figure: 1, pressure reducing valve body; 2, end cover; 3, knob; 4, threaded rod; 5, pressure gauge; 6, water outlet pipe; 7, connecting pipe; 8, sleeve; 9, water inlet pipe; 10, diaphragm; 11, support block; 12, first spring; 13, guide rod; 14, support plate; 15, through hole; 16, pressing block; 17, toothed plate; 18, support block; 19, bottom sleeve; 20, connecting rod; 21, fixed stop; 22, sliding stop; 23, support ring; 24, support rod; 25, second spring; 26, gear; 27, guide sleeve; 28, gasket; 29, groove; 30, filter screen; 31, connecting ring; 32, fixed sleeve; 33, chute; 34, slider; 35, pressing plate. Detailed implementation mode

[0027] The following specific embodiments illustrate the implementation mode of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work belong to the scope of protection of the present invention.

[0028] Referring to the attached Figures 1-6 , a safety type stainless steel wire mouth pressure reducing valve provided by the present invention includes a pressure reducing valve body 1. A end cover 2 is provided at the top of the pressure reducing valve body 1. The pressure reducing valve body 1 and the end cover 2 are fixed by bolts. A water outlet pipe 6 is provided on one side of the pressure reducing valve body 1. A water inlet pipe 9 is provided on the other side of the pressure reducing valve body 1. A pressure regulating mechanism is provided inside the pressure reducing valve body 1. A filtering mechanism is provided on one side of the water inlet pipe 9;

[0029] The pressure regulating mechanism includes a support plate 14. The support plate 14 is fixedly arranged inside the pressure reducing valve body 1. A guide rod 13 is provided on one side of the support plate 14. The guide rod 13 penetrates through the support plate 14 and is slidably connected with the support plate 14. One end of the guide rod 13 is fixedly connected with a pressing block 16. Two toothed plates 17 are fixedly connected to the bottom of the pressing block 16. A support block 18 is provided on one side of the bottom of the pressing block 16. The support block 18 is fixedly arranged at the bottom of the pressure reducing valve body 1. Both sides of the support block 18 are connected with a connecting rod 20 through bearings. The two connecting rods 20 respectively penetrate through the two gears 26 and are fixedly connected with the two gears 26. One end of each of the two connecting rods 20 is fixedly connected with a sliding stop 22. Fixed stops 21 are sleeved outside the two connecting rods 20. One of the fixed stops 21 is fixedly arranged inside the water inlet pipe 9, and the other fixed stop 21 is arranged inside the water outlet pipe 6;

[0030] In this embodiment, the pressure of the fluid is greater than the elastic force of the first spring 12. The pressure pushes the diaphragm 10 upward, causing the diaphragm 10 to push the guide rod 13 upward. The guide rod 13 pushes the first spring 12 to compress. At the same time, the pressing block 16 at the bottom of the guide rod 13 will drive the toothed plate 17 to move upward together. The toothed plate 17 drives the two gears 26 to rotate, causing the two gears 26 to drive the connecting rod 20 to rotate. The connecting rod 20 drives the sliding block 22 to rotate, so that the sliding block 22 blocks a part of the through port, thereby reducing the input of the fluid, and thus achieving the purpose of automatic pressure reduction;

[0031] Among them, in order to achieve the purpose of filtration, the present device adopts the following technical solution: The filtration mechanism includes a guide sleeve 27, the guide sleeve 27 is arranged inside the water inlet pipe 9, a filter screen 30 is embedded on one side of the guide sleeve 27, a fixed sleeve 32 is arranged on one side of the guide sleeve 27, a groove 29 is opened on one side of the guide sleeve 27, the groove 29 is threadedly connected with the fixed sleeve 32, sliders 34 are fixedly arranged on both sides of the fixed sleeve 32, two sliding grooves 33 are opened on the inner side wall of the water inlet pipe 9, and the two sliders 34 are respectively slidably connected inside the two sliding grooves 33. A connecting pipe 7 is arranged on one side of the guide sleeve 27, a sleeve 8 is sleeved outside the water inlet pipe 9, the sleeve 8 is threadedly connected with the connecting pipe 7, a sealing gasket 28 is arranged between the connecting pipe 7 and the guide sleeve 27, a connecting ring 31 is fixedly connected to one side of the fixed sleeve 32, a second spring 25 is fixedly connected to one side of the connecting ring 31, a support ring 23 is fixedly connected to the other side of the second spring 25, and a plurality of support rods 24 are fixedly connected to the outside of the support ring 23. All the plurality of support rods 24 are fixedly connected to the inner side wall of the water inlet pipe 9. The filter screen 30 is clamped on one side of the guide sleeve 27, the groove 29 on one side of the guide sleeve 27 is rotationally connected with the fixed sleeve 32, so that the fixed sleeve 32 limits the filter screen 30. At the same time, the connecting pipe 7 is connected to the guide sleeve 27, so that the connecting pipe 7 pushes the guide sleeve 27 to move. The sliders 34 on both sides of the fixed sleeve 32 connected to the guide sleeve 27 slide in the sliding grooves 33. At the same time, the connecting ring 31 squeezes the second spring 25, and the sleeve 8 is rotated and threadedly connected with the connecting pipe 7, so that the connecting pipe 7 is connected to the guide sleeve 27. The filter screen 30 can be replaced regularly. When replacing, the connection between the sleeve 8 and the connecting pipe 7 is released, and the second spring 25 will rebound and push the guide sleeve 27 out of the water inlet pipe 9, facilitating the disassembly of the guide sleeve 27;

[0032] Among them, in order to achieve the purpose of support, the present device adopts the following technical solution: Two bottom sleeves 19 are fixedly embedded at the bottom of the inner cavity of the pressure reducing valve body 1. One ends of the two toothed plates 17 respectively extend into the two bottom sleeves 19. The bottom sleeves 19 have the functions of supporting and buffering the toothed plates 17, avoiding damage to the pressure reducing valve body 1 caused by the long-term extrusion of the toothed plates 17;

[0033] Among them, in order to achieve the purpose of pressure feedback, the present device is implemented by the following technical solution: A diaphragm 10 is fixedly sleeved outside the guide rod 13, and the pressure is feedback by pushing the diaphragm 10;

[0034] Among them, in order to achieve the purpose of adjusting the elastic force, the present device is implemented by the following technical solution: A support block 11 is fixedly connected to the top end of the guide rod 13, a first spring 12 is fixedly connected to the top of the support block 11, a pressure plate 35 is fixedly connected to the top of the first spring 12, the top end of the pressure plate 35 is connected to a threaded rod 4 through a bearing, the threaded rod 4 penetrates through the top of the end cover 2 and is threadedly connected to the top of the end cover 2, a knob 3 is fixedly connected to the top of the threaded rod 4, by rotating the knob 3, the knob 3 drives the threaded rod 4 to rotate, the threaded rod 4 rotates and moves downward to push the pressure plate 35 to move downward, so that the first spring 12 is compressed, thereby increasing the elastic force of the first spring 12;

[0035] Among them, in order to achieve the purpose of facilitating the passage of fluid, the present device is implemented by the following technical solution: A through hole 15 is provided on one side of the support plate 14, and the through hole 15 facilitates the passage of fluid;

[0036] Among them, in order to achieve the purpose of measuring pressure, the present device is implemented by the following technical solution: Pressure gauges 5 are fixedly connected to one side of the water outlet pipe 6 and the water inlet pipe 9 respectively, and the pressure gauges 5 have the function of measuring pressure.

[0037] The usage process of the present invention is as follows: When using the present invention, the filter screen 30 is clamped on one side of the guide sleeve 27, and the groove 29 on one side of the guide sleeve 27 is rotatably connected to the fixed sleeve 32, so that the fixed sleeve 32 limits the filter screen 30. At the same time, the connecting pipe 7 is connected to the guide sleeve 27, and the connecting pipe 7 pushes the guide sleeve 27 to move. The sliders 34 on both sides of the fixed sleeve 32 connected to the guide sleeve 27 slide in the chute 33. At the same time, the connecting ring 31 squeezes the second spring 25, and the sleeve 8 is rotated and threadedly connected to the connecting pipe 7, so that the connecting pipe 7 is connected to the guide sleeve 27. The filter screen 30 can be replaced regularly. When replacing, the connection between the sleeve 8 and the connecting pipe 7 is released, and the second spring 25 will rebound and push the guide sleeve 27 out of the water inlet pipe 9, which is convenient for the disassembly of the guide sleeve 27. The fluid enters the guide sleeve 27 through the connecting pipe 7 and then enters the water inlet pipe 9 through the guide sleeve 27. Since the sliding block 22 and the fixed block 21 are on one side and are semicircular, the channel is not closed at this time, and the fluid enters the pressure reducing valve body 1 and is discharged through the water outlet pipe 6. At the same time, the fluid in the pressure reducing valve body 1 enters the top of the support plate 14 through the through hole 15. Since the diaphragm 10 is fixedly connected to the guide rod 13, the top of the guide rod 13 is pressed by the first spring 12, and the pressure of the fluid does not exceed the elastic force of the first spring 12. Therefore, the pressure of the fluid flowing through does not change. When the discharge amount of the water outlet pipe 6 decreases, the pressure of the pressure gauge 5 connected to the water outlet pipe 6 will increase at this time. At this time, the pressure of the fluid is greater than the elastic force of the first spring 12, and the pressure pushes the diaphragm 10 to move upward, so that the diaphragm 10 pushes the guide rod 13 to move upward, and the guide rod 13 pushes the first spring 12 to compress. At the same time, the pressing block 16 at the bottom of the guide rod 13 will drive the toothed plate 17 to move upward together, and the toothed plate 17 drives the two gears 26 to rotate, so that the two gears 26 drive the connecting rod 20 to rotate, and the connecting rod 20 drives the sliding block 22 to rotate, so that the sliding block 22 blocks a part of the through port, so that the input of the fluid is reduced, and the purpose of automatic pressure reduction is achieved.

[0038] The above is only a preferred embodiment of the present invention. Any person skilled in the art may modify the present invention by using the technical solutions described above or modify it into an equivalent technical solution. Therefore, any simple modification or equivalent replacement made according to the technical solutions of the present invention falls within the scope of protection required by the present invention.

Claims

1. A safety type stainless steel wire threaded reducing valve, comprising a reducing valve body (1), characterized in that: a end cover (2) is provided at the top of the reducing valve body (1), the reducing valve body (1) and the end cover (2) are fixed by bolts, a water outlet pipe (6) is provided on one side of the reducing valve body (1), a water inlet pipe (9) is provided on the other side of the reducing valve body (1), a pressure regulating mechanism is provided inside the reducing valve body (1), and a filtering mechanism is provided on one side of the water inlet pipe (9); the pressure regulating mechanism includes a support plate (14), the support plate (14) is fixedly arranged inside the reducing valve body (1), a guide rod (13) is provided on one side of the support plate (14), the guide rod (13) penetrates through the support plate (14) and is slidably connected with the support plate (14), one end of the guide rod (13) is fixedly connected with a pressing block (16), two tooth plates (17) are fixedly connected to the bottom of the pressing block (16), two gears (26) are meshed and connected to one side of each of the two tooth plates (17), a support block (18) is provided at the bottom of the pressing block (16), the support block (18) is fixedly arranged at the bottom of the reducing valve body (1), both sides of the support block (18) are connected with connecting rods (20) through bearings, the two connecting rods (20) respectively penetrate through the two gears (26) and are fixedly connected with the two gears (26), one end of each of the two connecting rods (20) is fixedly connected with a sliding stop block (22), fixing stop blocks (21) are sleeved outside the two connecting rods (20), one of the fixing stop blocks (21) is fixedly arranged inside the water inlet pipe (9), the other fixing stop block (21) is arranged inside the water outlet pipe (6), two bottom sleeves (19) are fixedly embedded at the bottom of the inner cavity of the reducing valve body (1), one end of each of the two tooth plates (17) extends into the two bottom sleeves (19) respectively, a diaphragm (10) is fixedly sleeved outside the guide rod (13), a support block (11) is fixedly connected to the top of the guide rod (13), a first spring (12) is fixedly connected to the top of the support block (11), a pressing plate (35) is fixedly connected to the top of the first spring (12), a threaded rod (4) is connected to the top of the pressing plate (35) through a bearing, the threaded rod (4) penetrates through the top of the end cover (2) and is threadedly connected with the top of the end cover (2), and a knob (3) is fixedly connected to the top of the threaded rod (4).

2. A safety type stainless steel wire threaded reducing valve according to claim 1, characterized in that: The filtering mechanism includes a guide sleeve (27), the guide sleeve (27) is arranged inside the water inlet pipe (9), a filter screen (30) is embedded on one side of the guide sleeve (27), a fixing sleeve (32) is arranged on one side of the guide sleeve (27), a groove (29) is formed on one side of the guide sleeve (27), the groove (29) is threadedly connected with the fixing sleeve (32), sliding blocks (34) are fixedly arranged on both sides of the fixing sleeve (32), two sliding grooves (33) are formed on the inner side wall of the water inlet pipe (9), and the two sliding blocks (34) are respectively slidably connected inside the two sliding grooves (33). A connecting pipe (7) is arranged on one side of the guide sleeve (27), a sleeve (8) is sleeved outside the water inlet pipe (9), and the sleeve (8) is threadedly connected with the connecting pipe (7).

3. A safety type stainless steel screw thread reducing valve according to claim 1, characterized in that: a through hole (15) is formed on one side of the support plate (14).

4. A safety type stainless steel screw thread reducing valve according to claim 1, characterized in that: pressure gauges (5) are fixedly connected to one side of both the water outlet pipe (6) and the water inlet pipe (9).

5. A safety type stainless steel screw thread reducing valve according to claim 2, characterized in that: a sealing gasket (28) is arranged between the connecting pipe (7) and the guide sleeve (27).

6. A safety type stainless steel screw thread reducing valve according to claim 2, characterized in that: a connecting ring (31) is fixedly connected to one side of the fixing sleeve (32), a second spring (25) is fixedly connected to one side of the connecting ring (31), a support ring (23) is fixedly connected to the other side of the second spring (25), a plurality of support rods (24) are fixedly connected to the outside of the support ring (23), and the plurality of support rods (24) are all fixedly connected to the inner side wall of the water inlet pipe (9).

Images