High-precision electric adjusting needle valve

Abstract

The utility model relates to the technical field of needle valves, and discloses a high-precision electric adjusting needle valve which comprises a valve body, a stepped groove is formed in the valve body, a liquid inlet hole is formed in the upper surface of the valve body, a liquid outlet hole is formed in the upper surface of the valve body, and the liquid outlet hole and the liquid inlet hole are communicated with the stepped groove. A valve needle is arranged on the inner wall of the stepped groove in an attached mode, a stud is fixedly connected to the right side of the valve needle, and sliding grooves are formed in the front side and the rear side of the valve body correspondingly. By means of the elastic support, a user can enable the microswitch and the check block to be staggered or aligned by pushing and pulling the third U-shaped plate on the elastic support, meanwhile, after the check block and the microswitch are staggered, the valve needle can be directly moved out of the valve body through cooperation of the screw rod, the adjusting support and the driving mechanism, and therefore the valve needle can be directly moved out of the valve body. And therefore, the valve needle in the electric adjusting needle valve is more convenient to disassemble and assemble, and maintenance personnel can conveniently replace the damaged valve needle.

Description

Technical Field

[0001] The utility model relates to the technical field of needle valves, in particular to a high-precision electric regulating needle valve. Background Art

[0002] At present, the high-precision electric regulating needle valve on the market is mainly composed of a valve body, a valve needle, a threaded groove, a threaded shaft and a stepper motor, wherein the threaded shaft is driven to rotate by the stepper motor, and then the valve needle is moved in the valve body through the cooperation of the threaded column and the threaded groove, and the switch of the electric regulating needle valve is controlled by the moving valve needle. For example, a new type of electric needle valve disclosed in Chinese patent announcement No. CN207018546U, but because the valve needle is located inside the valve body, and when replacing the valve needle, the valve body needs to be disassembled for replacement, which makes it more troublesome for maintenance personnel to replace the valve needle. Utility Model Content

[0003] The purpose of the utility model is to solve the shortcomings existing in the prior art, such as: At present, the high-precision electric regulating needle valve on the market is mainly composed of a valve body, a valve needle, a threaded groove, a threaded shaft and a stepper motor, wherein the threaded shaft is driven to rotate by the stepper motor, and then the valve needle is moved in the valve body through the cooperation of the threaded column and the threaded groove, and the switch of the electric regulating needle valve is controlled by the moving valve needle, but because the valve needle is located inside the valve body, and when replacing the valve needle, the valve body needs to be disassembled for replacement, which makes it more troublesome for maintenance personnel to replace the valve needle, and a high-precision electric regulating needle valve is proposed.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A high-precision electric regulating needle valve comprises a valve body, wherein a stepped groove is provided inside the valve body, a liquid inlet hole is provided on the upper surface of the valve body, a liquid outlet hole is provided on the upper surface of the valve body, the liquid outlet hole and the liquid inlet hole are both communicated with the stepped groove, a valve needle is fitted on the inner wall of the stepped groove, a stud is fixedly connected to the right side of the valve needle, a slide groove is provided on both the front and rear sides of the valve body, a first U-shaped plate is fitted on the inner wall of the slide groove, the inner wall of the first U-shaped plate is fixedly connected to the right side of the stud, and the surface of the stud is threadedly connected to the stud. There is an adjusting bracket, the surface of the adjusting bracket contacts the inner wall of the step groove, the left side of the adjusting bracket is fixedly connected to the right side of the valve body, the right side of the valve body is fixedly connected to a driving mechanism, the driving mechanism and the adjusting bracket are meshed with each other, the front side of the valve body is fixedly connected to an elastic bracket, the left and right sides of the inner wall of the elastic bracket are fixedly connected, the front side of the first U-shaped plate is fixedly connected to a block, the surface of the valve needle is provided with an annular groove, and the inner wall of the annular groove and the inner wall of the step groove are both fitted with sealing rings.

[0006] Preferably, the adjusting bracket includes a threaded barrel, the inner wall of the threaded barrel is threadedly connected to the surface of the stud, the surface of the threaded barrel is fixedly connected to a bearing, the surface of the bearing and the right side of the valve body are fixedly connected to a fixing ring, the surface of the threaded barrel contacts the inner wall of the step groove, the surface of the threaded barrel is fixedly connected to a first gear, and the driving mechanism and the first gear are meshed with each other.

[0007] Preferably, the driving mechanism includes a stepper motor, the output end of the stepper motor is fixedly connected to a rotating shaft, the surface of the rotating shaft is fixedly connected to a second gear, the second gear is meshed with the first gear, and the right side of the stepper motor and the right side of the valve body are fixedly connected to a second U-shaped plate.

[0008] Preferably, the elastic bracket includes a first sliding sleeve, the inner wall of the first sliding sleeve is fitted with a third U-shaped plate, the left and right sides of the inner wall of the third U-shaped plate are fixedly connected to the side of the micro switch, the top of the inner wall of the third U-shaped plate is fixedly connected to a first spring, the bottom of the first spring is fixedly connected to a connecting block, and the back side of the connecting block and the back side of the first sliding sleeve are fixedly connected to the front side of the valve body.

[0009] Preferably, a dustproof box is fitted on the right side of the valve body and the surface of the second U-shaped plate, a fixing hole is opened on the upper surface of the dustproof box, a fixing bracket is fitted on the inner wall of the fixing hole, and the left side of the fixing bracket is fixedly connected to the right side of the valve body.

[0010] Preferably, the fixed bracket includes a second sliding sleeve, the inner wall of the second sliding sleeve is fixedly connected to a hollow plate, the inner wall of the hollow plate is fixedly connected to a second spring, the inner wall of the fixing hole and the inner wall of the second sliding sleeve are both fitted with a fixing block, a groove is provided at the bottom of the fixing block, and the inner wall of the groove is fixedly connected to the upper surface of the second spring.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] (1) The utility model uses an elastic bracket to allow the user to push or pull the third U-shaped plate on the elastic bracket to offset or align the micro switch and the block. At the same time, when the block and the micro switch are offset, the valve needle can be directly removed from the valve body through the cooperation of the screw rod, the adjustment bracket and the driving mechanism, thereby making it easier to disassemble and assemble the valve needle in the electric adjustment needle valve, thereby facilitating maintenance personnel to replace the damaged valve needle.

[0013] (2) The utility model can fix the dust box on the valve body through the cooperation of the fixing bracket and the fixing hole. Moreover, when the dust box is fixed on the valve body, the dust in the air cannot be adsorbed on the threaded barrel, the stud, the first gear and the second gear through the dust box, so that the threaded barrel, the stud, the first gear and the second gear will not wear faster due to the adsorption of threads on the surface. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the structure of the utility model;

[0015] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0016] Figure 3 It is a front view of the structure of the utility model;

[0017] Figure 4 It is a right side view of the valve body in the utility model;

[0018] Figure 5 for Figure 4 Sectional view at the middle BB;

[0019] Figure 6 It is a top view of the first U-shaped plate in the utility model;

[0020] Figure 7 It is a front view of the adjusting bracket in the utility model;

[0021] Figure 8 It is a top view of the driving mechanism in the utility model;

[0022] Fig. 9 It is a front view of the elastic bracket in the utility model;

[0023] Fig.10 It is a top view of the dustproof box in the utility model;

[0024] Fig.11 It is a bottom view of the fixing block in the utility model.

[0025] In the figure: 1. valve body; 2. stepped groove; 3. liquid inlet hole; 4. liquid outlet hole; 5. valve needle; 6. stud; 7. slide groove; 8. first U-shaped plate; 9. adjusting bracket; 91. threaded cylinder; 92. bearing; 93. fixing ring; 94. first gear; 10. driving mechanism; 101. stepping motor; 102. rotating shaft; 103. second gear; 104. second U-shaped plate; 11. elastic bracket; 111. first sliding sleeve; 112. third U-shaped plate; 113. first spring; 114. connecting block; 12. micro switch; 13. stopper; 14. annular groove; 15. sealing ring; 16. dust box; 17. fixing hole; 18. fixing bracket; 181. second sliding sleeve; 182. hollow plate; 183. second spring; 184. fixing block; 185. groove. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0027] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0028] Embodiment 1:

[0029] Reference Figure 1-9A high-precision electric regulating needle valve comprises a valve body 1, a stepped groove 2 is provided inside the valve body 1, a liquid inlet hole 3 is provided on the upper surface of the valve body 1, a liquid outlet hole 4 is provided on the upper surface of the valve body 1, the liquid outlet hole 4 and the liquid inlet hole 3 are both communicated with the stepped groove 2, a valve needle 5 is fitted on the inner wall of the stepped groove 2, a stud 6 is fixedly connected to the right side of the valve needle 5, a slide groove 7 is provided on both the front and rear sides of the valve body 1, a first U-shaped plate 8 is fitted on the inner wall of the slide groove 7, the stud 6 can only move left and right through the cooperation of the first U-shaped plate 8 and the slide groove 7, the inner wall of the first U-shaped plate 8 is fixedly connected to the right side of the stud 6, an adjusting bracket 9 is threadedly connected to the surface of the stud 6, the surface of the adjusting bracket 9 contacts the inner wall of the stepped groove 2, and the adjusting bracket 9 The left side is fixedly connected to the right side of the valve body 1, and the right side of the valve body 1 is fixedly connected with a driving mechanism 10, which is meshed with the adjusting bracket 9. The front of the valve body 1 is fixedly connected with an elastic bracket 11, and the left and right sides of the inner wall of the elastic bracket 11 are fixedly connected with micro switches 12. The front of the first U-shaped plate 8 is fixedly connected with a stopper 13. When the stopper 13 contacts the micro switch 12, the driving mechanism 10 can be closed by the micro switch 12, so that the valve needle 5 cannot pass the maximum position or the minimum position. An annular groove 14 is provided on the surface of the valve needle 5, and a sealing ring 15 is fitted on the inner wall of the annular groove 14 and the inner wall of the step groove 2. The gap between the valve needle 5 and the step groove 2 is sealed by the sealing ring 15.

[0030] The adjusting bracket 9 includes a threaded barrel 91, the inner wall of which is threadedly connected to the surface of the stud 6, a bearing 92 is fixedly connected to the surface of the threaded barrel 91, a fixing ring 93 is fixedly connected to the surface of the bearing 92 and the right side of the valve body 1, the surface of the threaded barrel 91 contacts the inner wall of the stepped groove 2, and when the threaded barrel 91 rotates, the valve needle 5 moves to the left or right through the cooperation of the threaded barrel 91 and the stud 6, a first gear 94 is fixedly connected to the surface of the threaded barrel 91, and the driving mechanism 10 and the first gear 94 are meshed with each other.

[0031] The driving mechanism 10 includes a stepper motor 101, the output end of the stepper motor 101 is fixedly connected to a rotating shaft 102, the surface of the rotating shaft 102 is fixedly connected to a second gear 103, the second gear 103 and the first gear 94 are meshed with each other, and the right side of the stepper motor 101 and the right side of the valve body 1 are fixedly connected to a second U-shaped plate 104. When the stepper motor 101 drives the second gear 103 to rotate, the second gear 103 and the first gear 94 cooperate to make the threaded barrel 91 rotate together with the rotating shaft 102.

[0032] The elastic bracket 11 includes a first sleeve 111, and a third U-shaped plate 112 is fitted on the inner wall of the first sleeve 111. The left and right sides of the inner wall of the third U-shaped plate 112 are fixedly connected to the side of the micro switch 12, and the top of the inner wall of the third U-shaped plate 112 is fixedly connected to the first spring 113, and the bottom of the first spring 113 is fixedly connected to a connecting block 114. The back of the connecting block 114 and the back of the first sleeve 111 are fixedly connected to the front of the valve body 1. The third U-shaped plate 112 can only move up and down through the first sleeve 111, and the third U-shaped plate 112 can be supported by the first spring 113.

[0033] Embodiment 2:

[0034] Reference Figure 1-11 A dust box 16 is fitted on the right side of the valve body 1 and the surface of the second U-shaped plate 104. A fixing hole 17 is opened on the upper surface of the dust box 16. A fixing bracket 18 is fitted on the inner wall of the fixing hole 17. The left side of the fixing bracket 18 is fixedly connected to the right side of the valve body 1.

[0035] The fixing bracket 18 includes a second sleeve 181, the inner wall of the second sleeve 181 is fixedly connected with a hollow plate 182, the inner wall of the hollow plate 182 is fixedly connected with a second spring 183, the inner wall of the fixing hole 17 and the inner wall of the second sleeve 181 are both fitted with a fixing block 184, the bottom of the fixing block 184 is provided with a groove 185, the inner wall of the groove 185 is fixedly connected with the upper surface of the second spring 183, when the fixing block 184 is inserted into the fixing hole 17, the fixing block 184 is fixedly connected with the fixing hole 17 through the second spring 183. The fixed holes 17 cannot be separated automatically, and the dust box 16 can be fixed on the valve body 1 through the cooperation of the fixing block 184 and the fixing hole 17. At this time, the dust box 16 can prevent dust in the air from being adsorbed on the threaded barrel 91, the stud 6, the first gear 94 and the second gear 103, so that the threaded barrel 91, the stud 6, the first gear 94 and the second gear 103 will not wear faster due to the adsorption of threads on the surface. When the fixing block 184 is separated from the fixing hole 17, the dust box 16 can be separated from the valve body 1.

[0036] In the present invention, when the user uses the electric regulating needle valve, the user turns on the stepper motor 101 to control the second gear 103 to rotate, and then, through the cooperation of the second gear 103 and the first gear 94, the threaded barrel 91 rotates along with the rotating shaft 102. At this time, through the cooperation of the threaded barrel 91, the stud 6, the slide groove 7 and the first U-shaped plate 8, the valve needle 5 moves left or right, and through the cooperation of the valve needle 5 and the stepped groove 2, the switch of the electric regulating needle valve is controlled. At the same time, when the stopper 13 contacts the microswitch 12, the drive mechanism 10 can be closed through the microswitch 12, so that the valve needle 5 cannot pass the maximum position or the minimum position. When the valve needle 5 needs to be removed, the microswitch 12 is first pulled The third U-shaped plate 112 is staggered, and then, by turning on the stepper motor 101, the stepper motor 101 controls the second gear 103 to rotate, and then, through the cooperation of the second gear 103 and the first gear 94, the screw The threaded cylinder 91 rotates with the rotating shaft 102. At this time, the valve needle 5 can be directly removed from the valve body 1 through the cooperation of the threaded cylinder 91, the stud 6, the slide groove 7 and the first U-shaped plate 8. When the valve needle 5 needs to be installed, the valve needle 5 is first inserted into the stepped groove 2, and the stud 6 is in contact with the inner wall of the threaded cylinder 91. At the same time, the micro switch 12 is staggered with the slide groove 7 by pulling the third U-shaped plate 112. Then, the stepping motor 101 is turned on to control the second gear 103 rotates, and then, through the cooperation of the second gear 103 and the first gear 94, the threaded barrel 91 rotates along with the rotating shaft 102, and through the cooperation of the threaded barrel 91 and the stud 6, the valve needle 5 is moved into the valve body 1. When the stopper 13 is located between the two micro switches 12, the third U-shaped plate 112 is released, and the micro switch 12 is aligned with the stopper 13 through the first spring 113. Through the cooperation of the micro switch 12 and the stopper 13, the valve needle 5 cannot be moved out of the valve body 1.

[0037] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

[0038] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

Claims

1. A high-precision electric regulating needle valve, comprising a valve body (1), characterized in that: The valve body (1) is provided with a stepped groove (2) inside, the valve body (1) is provided with a liquid inlet hole (3) on the upper surface, the valve body (1) is provided with a liquid outlet hole (4) on the upper surface, the liquid outlet hole (4) and the liquid inlet hole (3) are both communicated with the stepped groove (2), the inner wall of the stepped groove (2) is fitted with a valve needle (5), the right side of the valve needle (5) is fixedly connected with a stud (6), the front and rear sides of the valve body (1) are provided with a slide groove (7), the inner wall of the slide groove (7) is fitted with a first U-shaped plate (8), the inner wall of the first U-shaped plate (8) is fixedly connected to the right side of the stud (6), the surface of the stud (6) is threadedly connected with an adjustment bracket (9), the adjustment bracket (9) is provided with a plurality of screw threads, and the adjustment bracket (9) is provided with a plurality of screw threads. The surface of the bracket (9) contacts the inner wall of the stepped groove (2); the left side of the adjusting bracket (9) is fixedly connected to the right side of the valve body (1); the right side of the valve body (1) is fixedly connected to a driving mechanism (10); the driving mechanism (10) and the adjusting bracket (9) are meshed with each other; the front side of the valve body (1) is fixedly connected to an elastic bracket (11); the left and right sides of the inner wall of the elastic bracket (11) are fixedly connected to micro switches (12); the front side of the first U-shaped plate (8) is fixedly connected to a stopper (13); an annular groove (14) is provided on the surface of the valve needle (5); the inner wall of the annular groove (14) and the inner wall of the stepped groove (2) are both fitted with sealing rings (15).

2. A high-precision electric regulating needle valve according to claim 1, characterized in that: The adjusting bracket (9) comprises a threaded barrel (91), the inner wall of the threaded barrel (91) is threadedly connected to the surface of the stud (6), the surface of the threaded barrel (91) is fixedly connected to a bearing (92), the surface of the bearing (92) and the right side of the valve body (1) are fixedly connected to a fixing ring (93), the surface of the threaded barrel (91) contacts the inner wall of the stepped groove (2), the surface of the threaded barrel (91) is fixedly connected to a first gear (94), and the driving mechanism (10) and the first gear (94) are meshed with each other.

3. A high-precision electric regulating needle valve according to claim 2, characterized in that: The driving mechanism (10) comprises a stepping motor (101), the output end of the stepping motor (101) is fixedly connected to a rotating shaft (102), the surface of the rotating shaft (102) is fixedly connected to a second gear (103), the second gear (103) and the first gear (94) are meshed with each other, and the right side of the stepping motor (101) and the right side of the valve body (1) are both fixedly connected to a second U-shaped plate (104).

4. A high-precision electric regulating needle valve according to claim 1, characterized in that: The elastic bracket (11) comprises a first sliding sleeve (111), the inner wall of the first sliding sleeve (111) is fitted with a third U-shaped plate (112), the left and right sides of the inner wall of the third U-shaped plate (112) are fixedly connected to the side of the micro switch (12), the top of the inner wall of the third U-shaped plate (112) is fixedly connected to a first spring (113), the bottom of the first spring (113) is fixedly connected to a connecting block (114), and the back side of the connecting block (114) and the back side of the first sliding sleeve (111) are fixedly connected to the front side of the valve body (1).

5. A high-precision electric regulating needle valve according to claim 3, characterized in that: The right side of the valve body (1) and the surface of the second U-shaped plate (104) are both fitted with a dust box (16), the upper surface of the dust box (16) is provided with a fixing hole (17), the inner wall of the fixing hole (17) is fitted with a fixing bracket (18), and the left side of the fixing bracket (18) is fixedly connected to the right side of the valve body (1).

6. A high-precision electric regulating needle valve according to claim 5, characterized in that: The fixed bracket (18) comprises a second sliding sleeve (181), the inner wall of the second sliding sleeve (181) is fixedly connected to a hollow plate (182), the inner wall of the hollow plate (182) is fixedly connected to a second spring (183), the inner wall of the fixing hole (17) and the inner wall of the second sliding sleeve (181) are both fitted with a fixing block (184), a groove (185) is provided at the bottom of the fixing block (184), and the inner wall of the groove (185) is fixedly connected to the upper surface of the second spring (183).

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