Multi-stage depressurization adjusting device

Abstract

The utility model provides a multi-stage depressurization adjusting device, and relates to the technical field of control valves. A multi-stage pressure reduction adjusting device comprises a valve body, a valve rod, a first sleeve, a second sleeve, a third sleeve, a fourth sleeve and a valve deck, the valve deck is installed on the valve body, the valve rod is rotatably arranged in the valve deck, the fourth sleeve is installed on the lower portion of the valve rod, the third sleeve is sleeved outside the fourth sleeve, and the second sleeve is sleeved outside the third sleeve. And a first sleeve is mounted at the bottoms of the second sleeve, the third sleeve and the fourth sleeve. Liquid is filtered and impurities are removed through the filter plate, the wedge-shaped block is pushed to enable the first guide rod to slide into the valve body, so that the wedge-shaped block is separated from limiting of the filter plate, the filter plate can be taken out of the valve body in a sliding mode and cleaned, the effects of filtering water and cleaning the filter plate are achieved, and blockage is avoided.

Description

Technical Field

[0001] The utility model provides a multi-stage pressure reduction regulating device, which relates to the technical field of control valves. Background Art

[0002] The metallurgical, petroleum and chemical industries are developing rapidly, and the technological level is gradually improving. The requirements for regulating valves for high-pressure differential fluid control are also getting higher and higher. When the medium flows through the throttling surface quickly, the valve trim is quickly eroded and fails; when the medium flows through the intercepting surface, flash evaporation, cavitation, and blocked flow will occur due to pressure changes, which will cause the valve trim and even the valve body to be scrapped. In order to increase the service life of the valve trim and reduce noise, a multi-stage step-down regulating valve is required to step down the pressure.

[0003] Existing multi-stage pressure regulating valves generally have a large number of leakage holes on the valve seat cage, which allows water to flow after the pressure is reduced. However, due to the large number of leakage holes, the valve seat cage is easily blocked, causing difficulty in passing water and affecting drainage efficiency.

[0004] Therefore, it is necessary to provide a multi-stage voltage reduction regulating device capable of filtering impurities. Utility Model Content

[0005] In order to overcome the shortcomings of the existing multi-stage pressure regulating valve that a large number of leakage holes are opened on the valve seat cage, which is easy to cause blockage and affect the water flow efficiency, the utility model provides a multi-stage pressure reduction regulating device capable of filtering impurities.

[0006] In order to achieve the above-mentioned purpose, the embodiment of the utility model provides the following technical solutions: a multi-stage pressure reduction regulating device, including a valve body, a valve stem, a first sleeve, a second sleeve, a third sleeve, a fourth sleeve and a valve cover, a valve cover is installed on the valve body, a valve stem is rotatably arranged in the valve cover, a fourth sleeve is installed at the lower part of the valve stem, the third sleeve is sleeved on the outside of the fourth sleeve, the second sleeve is sleeved on the outside of the third sleeve, the first sleeve is commonly installed at the bottom of the second sleeve, the third sleeve and the fourth sleeve, and also include a limit block, a filter plate, a wedge block, a first guide rod and a first elastic member, a limit block is installed on one side of the valve body, a filter plate is slidably arranged on the valve body, two first guide rods are slidably arranged on the side of the valve body, a wedge block is commonly fixedly connected to the two first guide rods, a first elastic member is wound around the first guide rod, and the wedge block cooperates with the filter plate.

[0007] Further description, it also includes mounting blocks installed on both sides of the valve body, a transparent tube passes through the mounting block, both ends of the transparent tube are connected to the valve body, a second guide rod is fixedly connected in the mounting block, two baffles are slidably arranged on the second guide rod, a bidirectional screw is rotatably arranged in the mounting block, the two baffles are threadedly connected to the bidirectional screw, a clamping block is fixedly connected to one side of the baffle, two clamping sleeves are fixedly connected to the transparent tube, and the clamping block is clamped with the clamping sleeve.

[0008] Further description, it also includes a third guide rod fixedly connected to the valve body, a baffle plate is slidably arranged on the third guide rod, a second elastic member is wound around the third guide rod, an indicator rod is fixedly connected to the baffle plate, a scale block is installed on the side of the valve body, and a glass block is installed on the scale block.

[0009] Further description: a wiping rod is slidably arranged on the scale block.

[0010] It is further explained that the valve body is filled with fillers, and the fillers are located between the fourth sleeve and the valve cover.

[0011] Further description: a sealing gasket is sleeved on the first sleeve.

[0012] Compared with the prior art, the multi-stage pressure reduction regulating device provided by the embodiment of the utility model has the following advantages: 1. The liquid is filtered through the filter plate to remove impurities. The first guide rod is pushed into the valve body by pushing the wedge block to make the wedge block disengage from the limit of the filter plate. The filter plate can be slid out of the valve body and cleaned, thereby achieving the effect of filtering the water body and cleaning the filter plate to avoid blockage.

[0013] 2. The valve body is connected through a transparent tube so that the liquid can flow in the transparent tube. The turbidity of the water can be observed through the transparent tube, making it easy to observe the water quality.

[0014] 3. By rotating the bidirectional screw, the two baffles slide along the second guide rod toward the side close to each other, so that the clamping block is separated from the clamping sleeve and the transparent tube can be pulled out from the mounting block. Then, by rotating the bidirectional screw in the opposite direction, the two baffles block the leak hole on the mounting block where the transparent tube is placed, so as to facilitate the cleaning of the transparent tube.

[0015] 3. The depressurized liquid impacts the spoiler, and the spoiler slides along the third guide rod and compresses the second elastic member. The spoiler drives the indicator rod to move. The hydraulic pressure value at this time is obtained according to the scale mark indicated by the indicator rod viewed through the glass block, thereby achieving the effect of measuring the pressure value of the liquid after depressurization. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the three-dimensional structure of the novel.

[0017] Figure 2 It is a three-dimensional cross-sectional structural schematic diagram of the valve body, filter plate and valve cover of the utility model.

[0018] Figure 3 For this utility model Figure 2 Enlarged view of point A in the middle.

[0019] Figure 4 It is a schematic diagram of the three-dimensional exploded structure of the valve stem, the first sleeve and the second sleeve of the utility model.

[0020] Figure 5 It is a three-dimensional cross-sectional structural schematic diagram of the valve body, the mounting block and the transparent tube of the utility model.

[0021] Figure 6 It is a three-dimensional cross-sectional structural schematic diagram of the baffle, the clamping block and the clamping sleeve of the utility model.

[0022] Figure 7 It is a three-dimensional cross-sectional structural schematic diagram of the valve body, baffle plate and packing of the utility model.

[0023] Figure 8 For this utility model Figure 7 Enlarged view of point B in the middle.

[0024] Markings in the accompanying drawings: 1: valve body, 2: limit block, 3: filter plate, 4: wedge block, 401: first guide rod, 5: first elastic part, 6: valve stem, 7: first sleeve, 8: second sleeve, 9: third sleeve, 10: fourth sleeve, 11: valve cover, 12: mounting block, 13: transparent tube, 14: bidirectional screw, 15: second guide rod, 16: baffle, 1601: block, 1602: sleeve, 17: baffle, 18: third guide rod, 19: second elastic part, 20: indicator rod, 21: scale block, 22: glass block, 23: wiping rod, 24: packing, 25: sealing gasket. DETAILED DESCRIPTION

[0025] The present invention will be further described below in conjunction with specific embodiments. The illustrative embodiments and descriptions of the present invention are used to explain the present invention but are not intended to limit the present invention.

[0026] Embodiment 1: A multi-stage voltage reduction regulating device, see Figure 1-Figure 4As shown, it includes a valve body 1, a valve stem 6, a first sleeve 7, a second sleeve 8, a third sleeve 9, a fourth sleeve 10 and a valve cover 11. The valve cover 11 is installed on the top of the valve body 1 by bolt connection. The valve stem 6 is rotatably arranged in the valve cover 11. The fourth sleeve 10 is installed on the lower part of the valve stem 6 by welding. The third sleeve 9 is sleeved on the outside of the fourth sleeve 10. The second sleeve 8, the third sleeve 9 are sleeved on the outside of the third sleeve 9. The first sleeve 7 is installed on the bottom of the second sleeve 8, the third sleeve 9 and the fourth sleeve 10 by welding. It also includes a limit block 2, a filter plate 3, a wedge block 4. A first guide rod 401 and a first elastic member 5. A limit block 2 is installed on one side of the water inlet end of the valve body 1 by bolt connection. A filter plate 3 for filtering impurities is slidably provided at the water inlet end of the valve body 1. The filter plate 3 slides longitudinally on the valve body 1. Two first guide rods 401 are slidably provided on the side of the water inlet end of the valve body 1. A wedge block 4 is fixedly connected to the two first guide rods 401 by welding. A first elastic member 5 is wound around the first guide rod 401. The wedge block 4 cooperates with the filter plate 3. The first elastic member 5 pushes the wedge block 4 to limit the filter plate 3.

[0027] Initially, the first elastic member 5 is not subjected to force, so that the wedge block 4 just clamps the filter plate 3. When the filter plate 4 needs to be taken out, the wedge block 4 is moved to the left away from the filter plate 3. At this time, the first elastic member 5 is subjected to force and compressed. When the regulating valve needs to be used, the liquid passes through the filter plate 3 to filter the liquid after entering the valve body 1 to remove impurities. When the filter plate 3 needs to be taken out for cleaning, the wedge block 4 is pushed to make the first guide rod 401 slide into the valve body 1 to make the wedge block 4 away from the filter plate 3. At this time, the first elastic member 5 is subjected to force and compressed and deformed, so that the wedge block 4 is separated from the limit of the filter plate 3. Then the filter plate 3 is slid out of the valve body 1, lifted up, taken out and cleaned. After loosening the wedge block 4, the first elastic member 5 pushes the wedge block 4 to reset. After cleaning the filter plate 3, the filter plate 3 is inserted into the valve body 1. At this time, the filter plate 3 pushes the wedge block 4 through the wedge surface, so that the wedge block 4 slides into the valve body 1 through the first guide rod 401, so that the filter plate 3 can be smoothly inserted into the valve body 1. Then the wedge block 4 is reset by the first elastic member 5, and the wedge block 4 limits the filter plate 3. When the liquid flows in the valve body 1, it is first filtered through the first sleeve 7, and then enters the fourth sleeve 10, and is filtered out from the fourth sleeve 10, the third sleeve 9 and the second sleeve 8 from the inside to the outside in turn to reduce the water pressure, and then discharged from the water outlet end of the valve body 1.

[0028] Example 2: Based on Example 1, refer to Figure 5 and Figure 6As shown, it also includes a mounting block 12 installed on both sides of the water inlet end of the valve body 1 by bolt connection, a transparent tube 13 for connecting water collection runs through the mounting block 12, both ends of the transparent tube 13 are connected to the valve body 1, a second guide rod 15 is fixedly connected to the mounting block 12 by welding, two baffles 16 for blocking water are horizontally slidably arranged on the second guide rod 15, a bidirectional screw 14 is rotatably arranged in the mounting block 12, the two baffles 16 are threadedly connected to the bidirectional screw 14, and a clamping block 1601 is fixedly connected to the side of the two baffles 16 away from each other by welding, and two clamping sleeves 1602 are fixedly connected to the transparent tube 13 by welding, and the clamping block 1601 is clamped with the clamping sleeve 1602.

[0029] After the liquid enters the valve body 1, the liquid circulates in the transparent tube 13. At this time, the turbidity of the water can be observed through the transparent tube 13. When the transparent tube 13 needs to be removed to remove impurities attached to the inner wall, the two-way screw 14 is rotated to make the two baffles 16 slide along the second guide rod 15 to the side close to each other. At this time, the baffle 16 drives the clamping block 1601 to disengage from the clamping sleeve 1602, and then the transparent tube 13 can be pulled out from the mounting block 12. The two-way screw 14 is rotated in the opposite direction to make the two baffles 16 slide along the second guide rod 15 to the side away from each other, so that the baffle 16 blocks the leakage hole on the mounting block 12 where the transparent tube 13 is placed.

[0030] See also Figure 7 and Figure 8 As shown, it also includes a third guide rod 18 fixedly connected to the valve body 1 by welding, a spoiler 17 is horizontally slidably arranged on the third guide rod 18, a second elastic member 19 is wound around the third guide rod 18, an indicating mark rod 20 is fixedly connected to the side of the spoiler 17 by welding, a scale block 21 is installed on the outer side of the valve body 1 by welding, and a glass block 22 is embedded in the scale block 21.

[0031] When the liquid is depressurized and flows outward, the liquid impacts the spoiler 17. At this time, the spoiler 17 slides along the third guide rod 18 and compresses the second elastic member 19. The spoiler 17 drives the indicator rod 20 to move, so that the scale mark on the scale block 21 indicated by the indicator rod 20 changes. The hydraulic pressure value at this time is known according to the scale mark indicated by the indicator rod 20 viewed through the glass block 22. When the liquid stops flowing and is discharged, the second elastic member 19 loses the force and returns to its original state, and pushes the spoiler 17 to slide and return to its original state along the third guide rod 18.

[0032] See also Figure 2 , Figure 7 and Figure 8As shown, a wiping rod 23 for cleaning the glass block 22 is horizontally slidably arranged on the scale block 21; a packing 24 is filled in the valve body 1, the packing 24 is located between the fourth sleeve 10 and the valve cover 11, and the packing 24 is wrapped around the bottom of the valve stem 6; a sealing gasket 25 is sleeved on the first sleeve 7.

[0033] When there are stains and dust on the glass block 22, it is easy to affect the observation of the scale mark indicated by the indicator rod 20. At this time, the stains and dust can be removed by pulling the wiping rod 23 to slide on the scale block 21 so that the wiping rod 23 can wipe and clean the glass block 22; the filler 24 can fill the gap between the valve cover 11 and the valve stem 6 to make the structure sealed to prevent liquid leakage; the sealing gasket 25 can strengthen the first sleeve 7 and the inner wall of the valve body 1 to fit more closely to prevent liquid leakage.

[0034] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. A multi-stage pressure-reducing regulating device, comprising a valve body (1), a valve stem (6), a first sleeve (7), a second sleeve (8), a third sleeve (9), a fourth sleeve (10) and a valve cover (11), wherein the valve body (1) is mounted with the valve cover (11), the valve stem (6) is rotatably arranged in the valve cover (11), the fourth sleeve (10) is mounted on the lower part of the valve stem (6), the third sleeve (9) is sleeved on the outer part of the fourth sleeve (10), the second sleeve (8) is sleeved on the outer part of the third sleeve (9), and the first sleeve (7) is mounted on the bottom of the second sleeve (8), the third sleeve (9) and the fourth sleeve (10), wherein: The valve body (1) further comprises a limit block (2), a filter plate (3), a wedge block (4), a first guide rod (401) and a first elastic member (5); the limit block (2) is installed on one side of the valve body (1); the filter plate (3) is slidably arranged on the valve body (1); two first guide rods (401) are slidably arranged on the side of the valve body (1); the two first guide rods (401) are commonly and fixedly connected with a wedge block (4); the first elastic member (5) is wound around the first guide rod (401); and the wedge block (4) cooperates with the filter plate (3).

2. A multi-stage voltage reduction regulating device according to claim 1, characterized in that: The valve body (1) further comprises a mounting block (12) mounted on both sides of the valve body (1), a transparent tube (13) passing through the mounting block (12), both ends of the transparent tube (13) being connected to the valve body (1), a second guide rod (15) being fixedly connected inside the mounting block (12), two baffles (16) being slidably arranged on the second guide rod (15), a bidirectional screw rod (14) being rotatably arranged inside the mounting block (12), the two baffles (16) being threadedly connected to the bidirectional screw rod (14), a clamping block (1601) being fixedly connected to one side of the baffle plate (16), two clamping sleeves (1602) being fixedly connected to the transparent tube (13), the clamping block (1601) being clamped to the clamping sleeve (1602).

3. The multi-stage voltage reduction regulating device according to claim 1, characterized in that: The valve body (1) further comprises a third guide rod (18) fixedly connected to the valve body (1), a baffle plate (17) being slidably arranged on the third guide rod (18), a second elastic member (19) being wound around the third guide rod (18), an indicating rod (20) being fixedly connected to the baffle plate (17), a scale block (21) being installed on the side of the valve body (1), and a glass block (22) being installed on the scale block (21).

4. A multi-stage voltage reduction regulating device according to claim 3, characterized in that: A wiping rod (23) is slidably arranged on the scale block (21).

5. The multi-stage voltage reduction regulating device according to claim 1, characterized in that: The valve body (1) is filled with a filler (24), and the filler (24) is located between the fourth sleeve (10) and the valve cover (11).

6. The multi-stage voltage reduction regulating device according to claim 1, characterized in that: A sealing gasket (25) is sleeved on the first sleeve (7).

Images