High-pressure-difference small-flow precise control regulating valve

Abstract

The utility model discloses a high-pressure-difference small-flow accurate control regulating valve. The high-pressure-difference small-flow accurate control regulating valve comprises a control box and an upper valve cover arranged below the control box. When the cover adjusting valve is used and flow needs to be adjusted, the air cylinder body works to drive the valve element to be far away from or close to the valve seat through the telescopic valve rod, so that a gap between the valve seat and the valve element is enlarged or reduced, and then the flow is adjusted; as the clamping block and the sealing gasket outside the valve element are made of rubber materials, water in the water inlet channel can be blocked, the sealing performance of the valve element is improved, meanwhile, the waterproof sleeve and the water absorption pad which are installed on the inner side and the lower end of the waterproof ring can prevent water flow from flowing out along the telescopic valve rod, and the sealing performance of the valve element is further improved. And through cooperative use of the air cylinder body, the telescopic valve rod, the valve element, the sealing gasket, the clamping block and the clamping groove, the sealing performance of the high-pressure-difference small-flow precise control regulating valve is enhanced.

Description

Technical Field

[0001] This utility model belongs to the technical field of flow regulation, specifically relating to a high pressure differential small flow precision control regulating valve. Background Technology

[0002] The high-pressure differential small-flow precision control regulating valve is a valve used to precisely regulate a small flow rate of fluid under high pressure differential conditions. It controls the flow rate of the fluid by adjusting the valve opening. This utility model of the high-pressure differential small-flow precision control regulating valve is mainly composed of a control box, a first connecting plate, a second connecting plate, an upper valve cover, a support column, a gland, a flange, an inlet pipe, a valve body, a connecting block, an outlet pipe, a lower valve cover, a telescopic valve stem, a cylinder body, a control button, an LCD display, a waterproof ring, a water-absorbing pad, a waterproof sleeve, a placement groove, waterproof adhesive, a valve core, an inlet channel, a slot, a valve seat, an outlet channel, a locking block, and a sealing gasket. Existing high-pressure differential small-flow precision control regulating valves have poor sealing performance, which can lead to water leakage and affect the normal operation of the equipment. Therefore, a high-pressure differential small-flow precision control regulating valve is essential. Utility Model Content

[0003] The purpose of this invention is to provide a high pressure differential small flow precision control regulating valve to solve the problem mentioned in the background art that the poor sealing performance of existing high pressure differential small flow precision control regulating valves leads to water leakage and affects the normal operation of the equipment.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a high pressure differential small flow precision control regulating valve, comprising...

[0005] The control box and the upper valve cover located below the control box;

[0006] An LCD screen and control buttons are located at the front of the control box;

[0007] Support columns are installed on the left and right sides of the lower end of the upper valve cover. The lower valve cover is connected to the lower end of the support columns. A pressure cap is installed on the upper end of the lower valve cover and inside the support columns.

[0008] A cylinder body is installed inside the control box and on the inner side of the support column. A telescopic valve rod is connected to the lower end of the cylinder body and on the inner side of the support column, the pressure cover and the connecting block.

[0009] A connecting block is provided at the lower end of the lower valve cover, and a valve seat is connected to the lower end of the connecting block. An inlet pipe and an outlet pipe are respectively connected to the left and right sides of the valve seat.

[0010] A valve seat is provided inside the valve body. A groove is provided inside the valve body and below the valve seat. A water inlet channel and a water outlet channel are provided on the left and right sides of the valve seat. A valve core is connected to the lower end of the telescopic valve stem inside the valve body. A sealing gasket is installed on the outer side of the valve core. A locking block is connected to the lower end of the sealing gasket inside the groove.

[0011] A waterproof ring is installed on the inner wall of the connecting block at the position outside the telescopic valve stem. A waterproof sleeve is installed on the inner wall of the waterproof ring. An absorbent pad is connected to the lower end of the waterproof ring at the position outside the telescopic valve stem.

[0012] The cylinder body is connected to an external pneumatic device;

[0013] The combined use of the cylinder body, telescopic valve stem, valve core, sealing gasket, locking block, and locking groove enhances the sealing performance of the high pressure differential small flow precision control regulating valve. Furthermore, the combined use of the waterproof ring, water-absorbing pad, and waterproof sleeve further enhances the sealing performance of the high pressure differential small flow precision control regulating valve.

[0014] Preferably, a first connecting plate is connected to the lower end of the control box, and a second connecting plate is connected to the upper end of the upper valve cover.

[0015] Preferably, the first connecting plate and the second connecting plate are connected by bolts and nuts, and flanges are connected to the outer sides of the water inlet pipe and the water outlet pipe.

[0016] Preferably, both the first connecting plate and the second connecting plate are hollow disc-shaped structures. The connection between the first connecting plate, the second connecting plate, bolts, nuts, and threads enhances the stability of the connection between the control box and the upper valve cover and the ease of disassembly.

[0017] Preferably, a placement groove is provided at the upper inner position of the waterproof ring, and a waterproof adhesive is provided at the inner position of the placement groove. The waterproof adhesive is made of acrylic emulsion.

[0018] Preferably, the waterproof ring is connected to the telescopic valve stem by a sleeve connection, and the waterproof ring is connected to the inner wall of the connecting block by an adhesive bonding method.

[0019] Preferably, the telescopic valve stem is compressed by the waterproof sleeve and the absorbent pad, which are made of rubber and sponge materials respectively. The combination of adhesive bonding, sleeve bonding and compression enhances the stability of the waterproof ring installation.

[0020] Compared with the prior art, this utility model provides a high pressure differential small flow precise control regulating valve, which has the following beneficial effects:

[0021] This invention improves a high-pressure differential small-flow precision control regulating valve. When using the valve, first, a waterproof ring is placed over the telescopic valve stem and then glued to the inner wall of the connecting block with waterproof adhesive. Next, the valve is installed, and then the cylinder body is connected to an external pneumatic device. When flow adjustment is needed, the cylinder body is operated via a control button. The operation of the cylinder body causes the valve core to move away from or towards the valve seat via the telescopic valve stem, thus increasing or decreasing the gap between the valve seat and the valve core, thereby adjusting the flow. When flow cutoff is needed, the locking block will completely... The entire cylinder is fully inserted into the slot. Because the sealing gasket between the cylinder block and the valve core is made of rubber, it blocks water from entering the inlet channel, thus increasing its sealing performance. At the same time, the waterproof sleeve and absorbent pad installed inside and at the bottom of the waterproof ring prevent water from flowing out along the telescopic valve stem, further increasing its sealing performance. Through the coordinated use of the cylinder body, telescopic valve stem, valve core, sealing gasket, cylinder block, and slot, the sealing performance of the high pressure differential small flow precise control regulating valve is enhanced. The coordinated use of the waterproof ring, absorbent pad, and waterproof sleeve further enhances the sealing performance of the high pressure differential small flow precise control regulating valve. Attached Figure Description

[0022] Figure 1 This is a structural schematic diagram of the front view of the high pressure differential small flow precision control regulating valve of this utility model.

[0023] Figure 2 This is a frontal sectional view of the high pressure differential small flow precision control regulating valve of this utility model.

[0024] Figure 3 This is an enlarged structural schematic diagram of the waterproof ring of the high pressure differential small flow precision control regulating valve of this utility model.

[0025] Figure 4 This is an enlarged structural schematic diagram of the valve core of the high pressure differential small flow precision control regulating valve of this utility model.

[0026] In the diagram: 1. Control box; 2. First connecting plate; 3. Second connecting plate; 4. Upper valve cover; 5. Support column; 6. Pressure cap; 7. Flange; 8. Inlet pipe; 9. Valve body; 10. Connecting block; 11. Outlet pipe; 12. Lower valve cover; 13. Telescopic valve stem; 14. Cylinder body; 15. Control button; 16. LCD display screen; 17. Waterproof ring; 18. Water-absorbing pad; 19. Waterproof sleeve; 20. Placement groove; 21. Waterproof adhesive; 22. Valve core; 23. Inlet channel; 24. Slot; 25. Valve seat; 26. Outlet channel; 27. Locking block; 28. Sealing gasket. Detailed Implementation

[0027] 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.

[0028] This utility model provides, for example Figure 1-4 The high-pressure differential small-flow precision control regulating valve shown includes a control box 1 and an upper valve cover 4 located below the control box 1. An LCD screen 16 and control buttons 15 are located at the front of the control box 1. Support columns 5 are installed on the lower left and right sides of the upper valve cover 4, and a lower valve cover 12 is connected to the lower end of the support columns 5. A pressure cap 6 is installed on the upper end of the lower valve cover 12, located inside the support columns 5. The valve is positioned inside the control box 1 and within the support columns 5. A cylinder body 14 is installed on the inner side of column 5. A telescopic valve stem 13 is connected to the lower end of cylinder body 14, located inside the support column 5, pressure cap 6, and connecting block 10. A connecting block 10 is provided at the lower end of lower valve cover 12. A valve seat 25 is connected to the lower end of connecting block 10. Water inlet pipe 8 and water outlet pipe 11 are connected to the left and right sides of valve seat 25, respectively. A valve seat 25 is provided inside valve body 9. A groove is provided inside valve body 9, located below valve seat 25. 24. An inlet channel 23 and an outlet channel 26 are respectively provided inside the valve body 9 and on the left and right sides of the valve seat 25. A valve core 22 is connected to the inner side of the valve body 9 and at the lower end of the telescopic valve stem 13. A sealing gasket 28 is installed on the outer side of the valve core 22. A retaining block 27 is connected to the inner side of the retaining groove 24 and at the lower end of the sealing gasket 28. A waterproof ring 17 is installed on the inner wall of the connecting block 10 and at the outer side of the telescopic valve stem 13. A waterproof... A water-absorbing pad 18 is connected to the lower end of the sleeve 19 and the waterproof ring 17, located outside the telescopic valve stem 13; the cylinder body 14 is connected to an external pneumatic device; the sealing performance of the high pressure differential small flow precision control regulating valve is enhanced by the combined use of the cylinder body 14, telescopic valve stem 13, valve core 22, sealing gasket 28, locking block 27 and locking groove 24, while the sealing performance of the high pressure differential small flow precision control regulating valve is further enhanced by the combined use of the waterproof ring 17, water-absorbing pad 18 and waterproof sleeve 19.

[0029] like Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, to enhance the sealing performance of the high-pressure differential small-flow precision control regulating valve, when using it, first, the waterproof ring 17 is placed on the outside of the telescopic valve stem 13 and then glued to the inner wall of the connecting block 10 with waterproof adhesive 21. Then, the high-pressure differential small-flow precision control regulating valve is installed. Next, the cylinder body 14 is connected to the external pneumatic device. When flow adjustment is needed, the cylinder body 14 is operated via the control button 15. The operation of the cylinder body 14 will cause the valve core 22 to move away from or closer to the valve seat 25 via the telescopic valve stem 13, thereby increasing or decreasing the gap between the valve seat 25 and the valve core 22, thus adjusting the flow. When cutoff is needed, the locking block 27 will fully engage. Inside the groove 24, because the sealing gasket 28 of the locking block 27 and the valve core 22 is made of rubber, it will block the water in the water inlet channel 23, thereby increasing its sealing performance. At the same time, the waterproof sleeve 19 and the water-absorbing pad 18 installed inside and at the lower end of the waterproof ring 17 will prevent water from flowing out along the telescopic valve stem 13, thereby further increasing its sealing performance. Through the combined use of the cylinder body 14, telescopic valve stem 13, valve core 22, sealing gasket 28, locking block 27 and locking groove 24, the sealing performance of the high pressure differential small flow precision control regulating valve is strengthened. The combined use of the waterproof ring 17, water-absorbing pad 18 and waterproof sleeve 19 further strengthens the sealing performance of the high pressure differential small flow precision control regulating valve.

[0030] A first connecting plate 2 is connected to the lower end of the control box 1, and a second connecting plate 3 is connected to the upper end of the upper valve cover 4. The first connecting plate 2 and the second connecting plate 3 are connected by bolts and nuts. Flanges 7 are connected to the outer sides of the water inlet pipe 8 and the water outlet pipe 11. Both the first connecting plate 2 and the second connecting plate 3 are hollow disc-shaped structures. The connection between the first connecting plate 2, the second connecting plate 3, bolts, nuts and threads enhances the stability of the connection between the control box 1 and the upper valve cover 4 and the ease of disassembly.

[0031] like Figure 1 and Figure 2 As shown, in order to enhance the stability of the connection between the control box 1 and the upper valve cover 4 and the ease of disassembly, when using the high pressure differential small flow precise control regulating valve, the control box 1 is first placed on the second connecting plate 3 at the upper end of the upper valve cover 4 via the first connecting plate 2 at the lower end, and the connecting holes inside the first connecting plate 2 and the second connecting plate 3 are aligned. Then, the first connecting plate 2 and the second connecting plate 3 are fixed with bolts and nuts, so that the control box 1 is installed on the upper end of the upper valve cover 4. The connection between the control box 1 and the upper valve cover 4 is enhanced by the first connecting plate 2, the second connecting plate 3, bolts, nuts and threaded connections.

[0032] A placement groove 20 is provided at the upper inner position of the waterproof ring 17, and a waterproof adhesive 21 is provided inside the placement groove 20. The waterproof adhesive 21 is made of acrylic emulsion. The waterproof ring 17 is connected to the telescopic valve rod 13 by a sleeve connection. The waterproof ring 17 is connected to the inner wall of the connecting block 10 by an adhesive connection. The telescopic valve rod 13 is squeezed by the waterproof sleeve 19 and the water-absorbing pad 18. The waterproof sleeve 19 and the water-absorbing pad 18 are made of rubber and sponge materials, respectively. Through the combined use of adhesive connection, sleeve connection and compression, the stability of the waterproof ring 17 installation is enhanced.

[0033] like Figure 2 and Figure 3 As shown, in order to enhance the stability of the waterproof ring 17 installation, when using the high pressure differential small flow precise control regulating valve, the waterproof adhesive 21 is first glued to the inside of the placement groove 20, so that the waterproof adhesive 21 is installed on the upper end of the waterproof ring 17. Then, the waterproof ring 17 is put on the outside of the telescopic valve stem 13 and glued to the inner wall of the connecting block 10 with the waterproof adhesive 21. At the same time, the waterproof sleeve 19 on the inner side of the waterproof ring 17 and the water absorption pad 18 at the lower end will squeeze the telescopic valve stem 13. Through the combined use of glue, sleeve and squeeze, the stability of the waterproof ring 17 installation is enhanced.

[0034] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A high-pressure differential, low-flow-rate precision control regulating valve, characterized in that: include Control box (1) and upper valve cover (4) located below the control box (1); The control box (1) is equipped with an LCD screen (16) and control buttons (15) at the front. Support columns (5) are installed on the left and right sides of the lower end of the upper valve cover (4). A lower valve cover (12) is connected to the lower end of the support column (5). A pressure cap (6) is installed on the upper end of the lower valve cover (12) and inside the support column (5). A cylinder body (14) is installed inside the control box (1) and on the inner side of the support column (5). A telescopic valve rod (13) is connected to the lower end of the cylinder body (14) and on the inner side of the support column (5), the pressure cap (6) and the connecting block (10). A connecting block (10) is provided at the lower end of the lower valve cover (12), and a valve seat (25) is connected at the lower end of the connecting block (10). A water inlet pipe (8) and a water outlet pipe (11) are respectively connected to the left and right sides of the valve seat (25). A valve seat (25) is provided inside the valve body (9). A slot (24) is provided inside the valve body (9) and below the valve seat (25). A water inlet channel (23) and a water outlet channel (26) are provided inside the valve body (9) and on the left and right sides of the valve seat (25), respectively. A valve core (22) is connected to the lower end of the telescopic valve stem (13) on the inner side of the valve body (9). A sealing gasket (28) is installed on the outer side of the valve core (22). A locking block (27) is connected to the lower end of the sealing gasket (28) on the inner side of the slot (24). A waterproof ring (17) is installed on the inner wall of the connecting block (10) and at the position outside the telescopic valve stem (13). A waterproof sleeve (19) is installed on the inner wall of the waterproof ring (17). An absorbent pad (18) is connected to the lower end of the waterproof ring (17) and at the position outside the telescopic valve stem (13). The cylinder body (14) is connected to an external pneumatic device; The sealing performance of the high pressure differential small flow precision control regulating valve is enhanced by the combined use of the cylinder body (14), telescopic valve rod (13), valve core (22), sealing gasket (28), locking block (27) and locking groove (24). The sealing performance of the high pressure differential small flow precision control regulating valve is further enhanced by the combined use of the waterproof ring (17), water absorption pad (18) and waterproof sleeve (19).

2. The high pressure differential small flow precision control regulating valve according to claim 1, characterized in that: The control box (1) is connected to a first connecting plate (2) at its lower end, and the upper valve cover (4) is connected to a second connecting plate (3) at its upper end.

3. The high pressure differential small flow precision control regulating valve according to claim 2, characterized in that: The first connecting plate (2) and the second connecting plate (3) are connected by bolts and nuts, and flanges (7) are connected to the outer side of the water inlet pipe (8) and the water outlet pipe (11).

4. The high pressure differential small flow precision control regulating valve according to claim 3, characterized in that: Both the first connecting plate (2) and the second connecting plate (3) are hollow disc-shaped structures. The connection between the first connecting plate (2), the second connecting plate (3), bolts, nuts and threads is enhanced to improve the stability of the connection between the control box (1) and the upper valve cover (4) and the ease of disassembly.

5. The high pressure differential small flow precision control regulating valve according to claim 1, characterized in that: A placement groove (20) is provided at the upper inner position of the waterproof ring (17), and a waterproof adhesive (21) is provided at the inner position of the placement groove (20). The waterproof adhesive (21) is made of acrylic emulsion.

6. The high pressure differential small flow precision control regulating valve according to claim 5, characterized in that: The waterproof ring (17) is connected to the telescopic valve stem (13) by a sleeve connection, and the waterproof ring (17) is connected to the inner wall of the connecting block (10) by an adhesive bonding method.

7. The high pressure differential small flow precision control regulating valve according to claim 6, characterized in that: The telescopic valve stem (13) is squeezed by the waterproof sleeve (19) and the absorbent pad (18). The waterproof sleeve (19) and the absorbent pad (18) are made of rubber and sponge materials respectively. Through the combined use of the adhesive, sleeve and squeeze, the stability of the waterproof ring (17) installation is enhanced.

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