Manual orifice plate throttle valve convenient to adjust

Abstract

The manual orifice plate throttling valve convenient to adjust comprises a main valve body, a valve element control mechanism and a flow control mechanism, the valve element control mechanism for controlling the flow speed of liquid or gas is arranged in the middle of the main valve body, and the flow control mechanism for accurately adjusting the flow speed of the gas or the liquid is arranged on the surface of the valve element control mechanism. The main valve body comprises a stainless steel valve cavity, a valve element sliding cavity, an inflow cavity, an outflow cavity and a connecting assembly, and the valve element sliding cavity is formed in the middle of the stainless steel valve cavity in an up-down penetrating mode. According to the manual orifice plate throttling valve convenient to adjust, the valve element control mechanism is arranged to be matched with the flow control mechanism, the adjusting threaded rod is made to ascend by rotating the adjusting hand disc, meanwhile, the elastic spring pushes the flow blocking valve element to slide upwards on the inner wall of the valve element sliding cavity, and due to the fact that the inner diameters of the direct-flow communicating notches are the same, the flow blocking valve element can be conveniently adjusted. The flow speed can be accurately controlled according to the communication number of the direct-current communication notches, the flow inlet cavities and the flow outlet cavities on the two sides, and then the purpose of accurately controlling the flow speed can be achieved.

Description

Technical Field

[0001] The invention relates to the technical field of throttle valves, in particular to a manual orifice throttle valve which is easy to adjust. Background Art

[0002] A throttle valve is a device used to control fluid flow and is widely used in hydraulic systems, pneumatic systems, and other fluid transmission systems. It changes the cross-sectional area of ​​the fluid flow by adjusting the valve opening, thereby achieving precise control of flow and pressure. The main functions of a throttle valve include regulating flow, controlling pressure, and providing high-precision flow control.

[0003] For example, a manual orifice throttle valve that is easy to adjust is disclosed in Chinese patent publication number (CN114738542B), which records: "It includes a throttle valve body, a valve stem is installed on the throttle valve body, a handle ring is installed on the upper end of the valve stem, a circular ring seat is sleeved on the upper end of the valve stem, cross plates are symmetrically installed on both sides of the circular ring seat, a lifting plate is installed on the lower end of the cross plate, a limit column is slidably installed on the lifting plate, the limit column is locked by a positioning assembly, the lower end of the lifting plate is inserted into the ear block, and an elastic locking assembly is provided at the lower end of the lifting plate. In the present invention, a circular ring seat is rotatably installed on the valve stem, a limit column is arranged in the lifting plate, and is fixed by a locking assembly, and a rectangular column and an elastic locking assembly are arranged below the limit column, so that when in use, the limit column can be moved to a preset position, so that the valve stem can only be lowered to a predetermined height to control the flow of the throttle valve, and at the same time, under the action of the elastic locking assembly, it can avoid the situation where the handle ring is misoperated and the valve stem is driven to rise."

[0004] In summary, it can be known that in the prior art, the pitch of the threaded lifting rod is set to multiple levels of adjustment to achieve precise control of the flow rate. However, the above device still has the following technical problems: the valve core of the throttle valve is mostly conical, and the inclination angle between the valve core and the internal through hole is controlled by moving the height of the valve core, thereby controlling the flow rate of the gas or liquid, while the adjustment mechanism set in the comparative document is equidistantly arranged. Such an arrangement will result in that although the distance moved by the valve core is the same, the size of the opening and closing gap angle is different. This will cause the gas or liquid flow rate in the throttle valve to not increase according to the preset adjustment distance. For this reason, it is necessary to propose a manual orifice throttle valve that is easy to adjust, so as to provide a new technical solution to solve the technical problems mentioned in the above patent. Summary of the invention

[0005] Based on this, it is necessary to provide an easy-to-adjust manual orifice throttle valve to address the above-mentioned technical problems. The device sets a valve core control mechanism in conjunction with a flow control mechanism. The adjusting threaded rod is raised by turning the adjusting hand dial. At the same time, the elastic spring pushes the choke valve core to slide upward on the inner wall of the valve core sliding cavity. Since the inner diameters of the DC connecting slots are the same, the flow rate can be accurately controlled according to the number of connections between the DC connecting slots and the inlet chambers and outflow chambers on both sides, thereby achieving the purpose of accurately controlling the flow rate.

[0006] In order to solve the above technical problems, the present invention adopts the following technical solutions: The invention discloses a manual orifice throttle valve which is easy to adjust and is applied to the precise flow control of the throttle valve and the rapid switching of the traditional throttle valve.

[0007] The manually adjustable orifice throttle valve specifically comprises a main valve body, a valve core control mechanism and a flow control mechanism, wherein the middle of the main valve body is provided with a valve core control mechanism for controlling the flow rate of liquid or gas, and the surface of the valve core control mechanism is provided with a flow control mechanism for accurately adjusting the flow rate of gas or liquid; The main valve body includes a stainless steel valve cavity, a valve core sliding cavity, an inlet chamber, an outflow chamber and a connecting assembly. A valve core sliding cavity is opened through the middle of the stainless steel valve cavity from top to bottom, and an inlet chamber and an outflow chamber are opened through the left and right sides of the stainless steel valve cavity respectively. The inlet chamber and the outflow chamber are both connected to the valve core sliding cavity.

[0008] As a preferred embodiment of the easy-to-adjust manual orifice throttle valve provided by the present invention, the connecting assembly includes an inlet connecting flange and an outflow connecting flange, the middle part of the inlet chamber is coaxially fixedly connected with the inlet connecting flange, and the middle part of the outflow chamber is coaxially fixedly connected with the outflow connecting flange.

[0009] As a preferred embodiment of the easy-to-adjust manual orifice throttle valve provided by the present invention, the valve core control mechanism includes a bottom end cover nut, a bottom flow blocking block, a top flow blocking block, a top end cover nut, an O-type rubber sealing ring, a reset assembly and a valve core control assembly, the bottom end of the stainless steel valve cavity is threadedly connected with a bottom end cover nut, the top end of the stainless steel valve cavity is threadedly connected with a top end cover nut, the bottom end cover nut and the middle of the stainless steel valve cavity are provided with a bottom flow blocking block, the upper and lower surfaces of the bottom flow blocking block are both provided with O-type rubber sealing rings, the middle of the stainless steel valve cavity and the top end cover nut are provided with a top flow blocking block, the upper and lower surfaces of the top flow blocking block are both provided with O-type rubber sealing rings, and the O-type rubber sealing ring can fill the gap caused by the metal hard connection by extrusion, thereby effectively avoiding liquid or gas leakage caused by the gap.

[0010] As a preferred embodiment of the easily adjustable manual orifice throttle valve provided by the present invention, the reset assembly includes a spring mounting groove and an elastic spring, and the top surface of the bottom choke block is provided with six spring mounting grooves in a circular array, and elastic springs are respectively arranged in the middle of the six spring mounting grooves, and the elastic springs can adjust the position of the choke valve core.

[0011] As a preferred embodiment of the easy-to-adjust manual orifice throttle valve provided by the present invention, the valve core control assembly includes an adjusting threaded rod, an adjusting hand plate and a choke valve core. The middle part of the top choke block is threadedly connected with the adjusting threaded rod, and the end of the adjusting threaded rod away from the stainless steel valve cavity is fixedly connected with the adjusting hand plate. The inner wall of the valve core sliding cavity is slidably connected with the choke valve core, the top surface of the choke valve core is tightly attached to the bottom end of the adjusting threaded rod, and the bottom surface of the choke valve core is tightly attached to the top end of the elastic spring. The choke valve core, the adjusting threaded rod and the valve core sliding cavity are coaxially arranged. The adjusting threaded rod is lowered and cooperates with the elastic spring to adjust the choke valve core inside the valve core sliding cavity. By controlling the position of the choke valve core, the flow rate of the liquid or gas can be controlled more accurately.

[0012] As a preferred embodiment of the easy-to-adjust manual orifice throttle valve provided by the present invention, five DC connecting slots are provided in a linear array in the middle of the choke valve core near one end of the elastic spring. Since the inner diameters of the DC connecting slots are the same, the flow rate can be accurately controlled according to the number of connections between the DC connecting slots and the inlet chambers and the outflow chambers on both sides. A conical gas-liquid flow slot is provided in the middle of the choke valve core near one end of the adjusting threaded rod. Retaining the conical gas-liquid flow slot can make the device adapt to most working environments.

[0013] As a preferred embodiment of the easy-to-adjust manual orifice throttle valve provided by the present invention, the flow control mechanism includes a linkage fixed gasket, an extended support cross bar, an adjustment positioning longitudinal rod, a clamping positioning assembly and an adjustment locking assembly. The surface of the adjusting threaded rod is fixedly connected to two linkage fixed gaskets, and a certain space is left in the middle of the two linkage fixed gaskets. The surface of the adjusting threaded rod is sleeved with an extended support cross bar, and the extended support cross bar is rotatably connected to the surface of the adjusting threaded rod. The extended support cross bar is arranged in the middle of the two linkage fixed gaskets, and the two ends of the extended support cross bar are respectively fixedly connected to the adjustment positioning longitudinal rods.

[0014] As a preferred embodiment of the easy-to-adjust manual orifice throttle valve provided by the present invention, the surface of the adjusting positioning longitudinal rod is provided with five plug-in positioning holes in a linear array, the surface of the adjusting positioning longitudinal rod is provided with five arc-shaped connecting grooves in a linear array, the five arc-shaped connecting grooves are connected with the five plug-in positioning holes in a one-to-one correspondence, the surface of the adjusting positioning longitudinal rod is provided with a longitudinal guide groove, the longitudinal guide groove is connected with the five arc-shaped connecting grooves, the plug-in positioning holes and the DC connecting slots are both provided in a linear array, and the distance between the plug-in positioning holes and the DC connecting slot array is the same.

[0015] As a preferred embodiment of the easy-to-adjust manual orifice throttle valve provided by the present invention, the snap-fit ​​positioning assembly includes a side support block, a snap-fit ​​slot, a fixed sleeve, a plug-in movable pin and an elastic spring. The surface of the top end cover nut is mirror-symmetrically fixedly connected with the side support block, and the bottom surface of the side support block is provided with a snap-fit ​​slot. The adjustment positioning longitudinal rod is slidably connected to the middle part of the side support block, and the middle part of the side support block is fixedly connected with a fixed sleeve, and the inner wall of the fixed sleeve is slidably connected with a plug-in movable pin. An elastic spring is arranged inside the fixed sleeve, and the two ends of the elastic spring are respectively fixedly connected to the fixed sleeve and the plug-in movable pin.

[0016] As a preferred embodiment of the easy-to-adjust manual orifice throttle valve provided by the present invention, the adjustment locking assembly includes a movable locking ring and a positioning block, the surface of the adjustment positioning longitudinal rod is slidably connected with a movable locking ring, the movable locking ring is arranged below the side support block, the inner wall of the movable locking ring is fixedly connected with a positioning block, and the positioning block is slidably connected to the inner walls of the plug-in positioning hole, the arc-shaped connecting groove and the longitudinal guide groove.

[0017] Compared with the prior art, the present invention has the following beneficial effects: The present invention provides an easy-to-adjust manual orifice throttle valve. The device is provided with a valve core control mechanism in conjunction with a flow control mechanism. The adjusting threaded rod is raised by rotating the adjusting hand plate. At the same time, the elastic spring pushes the choke valve core to slide upward on the inner wall of the valve core sliding cavity. Since the inner diameters of the DC connecting slots are the same, the flow rate can be accurately controlled according to the number of connections between the DC connecting slots and the inlet chambers and the outflow chambers on both sides, thereby achieving the purpose of accurately controlling the flow rate.

[0018] The easy-to-adjust manual orifice throttle valve provided by the present invention has a DC connecting slot and a conical gas-liquid flow slot. The DC connecting slot and the conical gas-liquid flow slot can be opened respectively by the rising or falling of the choke valve core. The DC connecting slot can accurately control the flow rate of liquid or gas, and retaining the conical gas-liquid flow slot can make the device adapt to most working environments.

[0019] The easy-to-adjust manual orifice throttle valve provided by the present invention is equipped with a movable locking ring and a positioning block. The movable locking ring is pushed to make the positioning block slide on the inner wall of the longitudinal guide groove. After moving to the middle of the corresponding arc-shaped connecting groove, the positioning block is rotated to the middle of the arc-shaped connecting groove. In the process of adjusting the rising of the positioning longitudinal rod, the side support block cooperates with the movable locking ring to accurately adjust the rising distance of the adjusting longitudinal rod, and at the same time, the connection number of the DC connecting slot can be accurately controlled. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the scheme of the present invention, a brief introduction is given below to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0021] Figure 1 A schematic diagram of the overall structure of the easily adjustable manual orifice throttle valve provided by the present invention; Figure 2 A schematic diagram of the planar structure of the side surface of the easily adjustable manual orifice throttle valve provided by the present invention; Figure 3 The present invention provides a conveniently adjustable manual orifice throttle valve Figure 2 Schematic diagram of the cross-sectional structure at AA in the middle; Figure 4 A schematic diagram of the internal structure of a stainless steel valve chamber of a manual orifice throttle valve that is easy to adjust provided by the present invention; Figure 5 A schematic diagram of the connection structure of the valve core control mechanism and the flow control mechanism of the manually adjustable orifice throttle valve provided by the present invention; Figure 6 A schematic diagram of the structure of a flow control mechanism of a manual orifice throttle valve that is easy to adjust provided by the present invention; Figure 7 A schematic diagram of the internal structure of a choke valve core of a manually adjustable orifice throttle valve provided by the present invention; Figure 8 A schematic diagram of the front and back structures of the adjusting and positioning longitudinal rod of the manually adjustable orifice throttle valve provided by the present invention; Fig. 9 A schematic diagram of the internal structure of the side support block of the manually adjustable orifice throttle valve provided by the present invention; Fig.10 A schematic structural diagram of a movable locking ring and a positioning block of a manual orifice throttle valve that is easy to adjust provided by the present invention.

[0022] The markings in the figure are as follows: 1. Main valve body; 2. Valve core control mechanism; 3. Flow control mechanism; 4. Stainless steel valve chamber; 5. Valve core sliding chamber; 6. Inlet chamber; 7. Inlet connection flange; 8. Outflow chamber; 9. Outflow connection flange; 10. choke valve core; 11. Direct current connection slot; 12. Conical gas-liquid flow slot; 13. Bottom end cover nut; 14. Bottom choke block; 15. O-type rubber sealing ring; 16. Spring installation slot; 17. Elastic spring; 18. Top flow blocking block; 19. Top end cover nut; 20. Adjustment threaded rod; 21. Adjustment hand plate; 22. Linkage fixing gasket; 23. Extension support cross bar; 24. Adjustment positioning longitudinal rod; 25. Insertion positioning hole; 26. Arc-shaped connecting groove; 27. Longitudinal guide groove; 28. Side support block; 29. ​​Clamping notch; 30. Fixed sleeve; 31. Insertion movable pin; 32. Elastic spring; 33. Movable locking ring; 34. Positioning block. DETAILED DESCRIPTION

[0023] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described 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, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0024] As described in the background technology, the valve core of the throttle valve is mostly conical, and the inclination angle between the valve core and the internal through hole is controlled by moving the height of the valve core, thereby controlling the flow rate of the gas or liquid. The adjustment mechanism set in the comparative document is equidistantly arranged. Such a setting will result in that although the distance moved by the valve core is the same, the size of the opening and closing gap angle is different, which will cause the gas or liquid flow rate in the throttle valve to not increase according to the preset adjustment distance.

[0025] In order to solve this technical problem, the present invention provides a manual orifice throttle valve that is easy to adjust, which is used for precise flow control of the throttle valve and rapid switching of the traditional throttle valve.

[0026] Specifically, please refer to Figure 1-Figure 2 The easy-to-adjust manual orifice throttle valve specifically includes a main valve body 1, a valve core control mechanism 2 and a flow control mechanism 3. The middle part of the main valve body 1 is provided with a valve core control mechanism 2 for controlling the flow rate of liquid or gas, and the surface of the valve core control mechanism 2 is provided with a flow control mechanism 3 for accurately adjusting the flow rate of gas or liquid.

[0027] The present invention provides an easy-to-adjust manual orifice throttle valve. The device is provided with a valve core control mechanism 2 to cooperate with a flow control mechanism 3. The adjusting threaded rod 20 is raised by rotating the adjusting hand plate 21. At the same time, the elastic spring 17 pushes the choke valve core 10 to slide upward on the inner wall of the valve core sliding cavity 5. Since the inner diameters of the DC connecting slots 11 are the same, the flow rate can be accurately controlled according to the number of connections between the DC connecting slots 11 and the inlet chambers 6 and the outflow chambers 8 on both sides, thereby achieving the purpose of accurately controlling the flow rate.

[0028] In order to enable those skilled in the art to better understand the solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings.

[0029] Embodiment 1: Please refer to Figure 2-Figure 5 A manual orifice throttle valve that is easy to adjust, the main valve body 1 of which includes a stainless steel valve cavity 4, a valve core sliding cavity 5, an inlet chamber 6, an outlet chamber 8 and a connecting assembly. The middle of the stainless steel valve cavity 4 is penetrated by a valve core sliding cavity 5, and the left and right sides of the stainless steel valve cavity 4 are penetrated by an inlet chamber 6 and an outlet chamber 8, respectively. The inlet chamber 6 and the outlet chamber 8 are both connected to the valve core sliding cavity 5. Specifically, the connection assembly includes an inlet connection flange 7 and an outflow connection flange 9 . The middle of the inlet chamber 6 is coaxially fixedly connected with the inlet connection flange 7 , and the middle of the outflow chamber 8 is coaxially fixedly connected with the outflow connection flange 9 .

[0030] In this embodiment, the valve core control mechanism 2 includes a bottom end cover nut 13, a bottom flow blocking block 14, a top flow blocking block 18, a top end cover nut 19, an O-type rubber sealing ring 15, a reset assembly and a valve core control assembly. The bottom end of the stainless steel valve chamber 4 is threadedly connected with the bottom end cover nut 13, and the top end of the stainless steel valve chamber 4 is threadedly connected with the top end cover nut 19. The bottom end cover nut 13 and the middle of the stainless steel valve chamber 4 are provided with a bottom flow blocking block 14, and the upper and lower surfaces of the bottom flow blocking block 14 are both provided with O-type rubber sealing rings 15. The middle of the stainless steel valve chamber 4 and the top end cover nut 19 are provided with a top flow blocking block 18, and the upper and lower surfaces of the top flow blocking block 18 are both provided with O-type rubber sealing rings 15. The O-type rubber sealing ring 15 can fill the gap generated by the metal rigid connection by extrusion, thereby effectively avoiding liquid or gas leakage caused by the gap.

[0031] Specifically, the reset assembly includes a spring mounting groove 16 and an elastic spring 17. The top surface of the bottom choke block 14 is provided with six spring mounting grooves 16 in a circular array. Elastic springs 17 are respectively arranged in the middle of the six spring mounting grooves 16. The elastic springs 17 can adjust the position of the choke valve core 10.

[0032] In this embodiment, the valve core control assembly includes an adjusting threaded rod 20, an adjusting hand plate 21 and a choke valve core 10. The middle part of the top choke block 18 is threadedly connected with the adjusting threaded rod 20, and the end of the adjusting threaded rod 20 away from the stainless steel valve chamber 4 is fixedly connected with the adjusting hand plate 21. The inner wall of the valve core sliding chamber 5 is slidably connected with the choke valve core 10. The top surface of the choke valve core 10 is tightly attached to the bottom end of the adjusting threaded rod 20, and the bottom surface of the choke valve core 10 is tightly attached to the top end of the elastic spring 17. The choke valve core 10, the adjusting threaded rod 20 and the valve core sliding chamber 5 are coaxially arranged. The adjusting threaded rod 20 descends and cooperates with the elastic spring 17 to adjust the choke valve core 10 inside the valve core sliding chamber 5. By controlling the position of the choke valve core 10, the flow rate of the liquid or gas can be controlled more accurately.

[0033] Furthermore, the choke valve core 10 is provided with five DC connecting slots 11 in a linear array in the middle part near one end of the elastic spring 17. Since the inner diameters of the DC connecting slots 11 are the same, the flow rate can be accurately controlled according to the number of connections between the DC connecting slots 11 and the inlet chambers 6 and the outflow chambers 8 on both sides. The choke valve core 10 is provided with a conical gas-liquid flow slot 12 in the middle part near one end of the adjusting threaded rod 20. Retaining the conical gas-liquid flow slot 12 can make the device adapt to most working environments.

[0034] Through the above structural design, when the device is used, the inlet connecting flange 7 and the outflow connecting flange 9 are first connected to the inlet pipe and the outlet pipe respectively. After completion, the adjusting hand plate 21 is rotated clockwise. The rotation of the adjusting hand plate 21 drives the adjusting threaded rod 20 to rotate in the middle of the top choke block 18. While the adjusting threaded rod 20 rotates, its bottom end descends in the middle of the valve core sliding chamber 5. During the descent of the adjusting threaded rod 20, the choke valve core 10 is pushed to slide downward on the inner wall of the valve core control mechanism 2. During the sliding of the choke valve core 10, the elastic spring 17 is squeezed to shrink it. During the gradual descent of the choke valve core 10, the conical gas-liquid flow groove 12 is connected with the inlet chamber 6 and the outflow connecting flange 9 on both sides. At this time, the liquid or gas enters the interior of the inlet chamber 6 through the inlet connecting flange 7. After completion, it flows to the interior of the outflow chamber 8 through the conical gas-liquid flow groove 12. If the adjusting hand plate 21 is continued to be rotated, the choke valve core 10 can be squeezed on the inner wall of the valve core sliding chamber 5 to continue By sliding downward, the opening angle of the conical gas-liquid flow slot 12 can be increased, thereby increasing the flow rate. If the flow rate needs to be precisely controlled, the adjusting hand plate 21 needs to be rotated counterclockwise. The adjusting hand plate 21 rotates counterclockwise to drive the adjusting threaded rod 20 to rotate counterclockwise. The adjusting threaded rod 20 rotates counterclockwise in the middle of the top choke block 18 and rises inside the valve core sliding chamber 5. During the rising process of the adjusting threaded rod 20, the elastic spring 17 pushes the choke valve core 10 to slide upward on the inner wall of the valve core sliding chamber 5. During the sliding process of the choke valve core 10, the DC connecting slot 11 is connected with the inlet chamber 6 and the outflow chamber 8 on both sides. If the circulation speed needs to be increased, the adjusting hand plate 21 needs to be continued to be rotated counterclockwise. The adjusting hand plate 21 continues to drive the adjusting threaded rod 20 to rise, so that the next DC connecting slot 11 can be connected with the inlet chamber 6 and the outflow chamber 8. The flow rate at this time is doubled. If it needs to be further increased, continue to rotate the adjusting hand plate 21, and the maximum can be increased to five times.

[0035] Embodiment 2: The easy-to-adjust manual orifice throttle valve provided in Example 1 is further optimized. Specifically, Figure 6-Figure 10 As shown, the flow control mechanism 3 includes a linkage fixed gasket 22, an extended support cross bar 23, an adjustment positioning longitudinal rod 24, a clamping positioning assembly and an adjustment locking assembly. The surface of the adjusting threaded rod 20 is fixedly connected to two linkage fixed gaskets 22, and a certain space is left in the middle of the two linkage fixed gaskets 22. The surface of the adjusting threaded rod 20 is sleeved with an extended support cross bar 23, and the extended support cross bar 23 is rotatably connected to the surface of the adjusting threaded rod 20. The extended support cross bar 23 is arranged in the middle of the two linkage fixed gaskets 22, and the two ends of the extended support cross bar 23 are respectively fixedly connected to the adjustment positioning longitudinal rods 24.

[0036] Furthermore, the surface of the adjusting positioning longitudinal rod 24 is provided with five plug-in positioning holes 25 in a linear array, and the surface of the adjusting positioning longitudinal rod 24 is provided with five arc-shaped connecting grooves 26 in a linear array. The five arc-shaped connecting grooves 26 are connected with the five plug-in positioning holes 25 in a one-to-one correspondence. The surface of the adjusting positioning longitudinal rod 24 is provided with a longitudinal guide groove 27, and the longitudinal guide groove 27 is connected with the five arc-shaped connecting grooves 26. The plug-in positioning holes 25 and the DC connecting slots 11 are both provided in a linear array, and the array distances of the plug-in positioning holes 25 and the DC connecting slots 11 are the same.

[0037] In this embodiment, the snap-in positioning assembly includes a side support block 28, a snap-in slot 29, a fixed sleeve 30, a plug-in movable pin 31 and an elastic spring 32. The surface of the top end cover nut 19 is fixedly connected to the side support block 28 in a mirror-symmetrical manner. The bottom surface of the side support block 28 is provided with a snap-in slot 29. The adjusting positioning longitudinal rod 24 is slidably connected to the middle part of the side support block 28. The middle part of the side support block 28 is fixedly connected to the fixed sleeve 30. The inner wall of the fixed sleeve 30 is slidably connected to the plug-in movable pin 31. An elastic spring 32 is arranged inside the fixed sleeve 30. The two ends of the elastic spring 32 are respectively fixedly connected to the fixed sleeve 30 and the plug-in movable pin 31.

[0038] In this embodiment, the adjustment locking assembly includes a movable locking ring 33 and a positioning block 34. The surface of the adjustment positioning longitudinal rod 24 is slidably connected with the movable locking ring 33. The movable locking ring 33 is arranged below the side support block 28. The inner wall of the movable locking ring 33 is fixedly connected with the positioning block 34. The positioning block 34 is slidably connected to the inner walls of the plug-in positioning hole 25, the arc-shaped connecting groove 26 and the longitudinal guide groove 27.

[0039] Through the above structural design, when it is necessary to accurately adjust the flow rate, first pull the movable locking rings 33 on both sides to slide with the surfaces of the adjusting positioning longitudinal rods 24. During the sliding of the movable locking rings 33, the positioning block 34 slides on the inner wall of the longitudinal guide groove 27. The arc-shaped connecting grooves 26 are divided into No. 1 to No. 5 from top to bottom. Assuming that three DC connecting slots 11 need to be opened, at this time, the positioning block 34 is slid to a position parallel to the No. 3 arc-shaped connecting groove 26. After completion, rotate the movable locking ring 33. The rotation of the movable locking ring 33 drives the positioning block 34 to be clamped to the inner wall of the arc-shaped connecting groove 26, and the positioning block 34 on the other side is clamped to the middle of the same arc-shaped connecting groove 26. After completion, rotate the adjusting hand plate 21 counterclockwise. The rotation of the adjusting hand plate 21 can drive the adjusting threaded rod 20 to rotate in the middle of the top flow-blocking block 18. The adjusting threaded rod 20 rises during the counterclockwise rotation, and the elastic spring 17 at the bottom of the rising adjusting threaded rod 20 pushes When the locking nut 33 is lifted up, the locking nut 33 is pressed against the locking nut 34 so that the locking nut 33 is in the locked state, and the locking nut 33 is pressed against the locking nut 34 so that the locking nut 33 is in the locked state.

Claims

1. A manual orifice throttle valve that is easy to adjust, characterized in that; It comprises a main valve body (1), a valve core control mechanism (2) and a flow control mechanism (3), wherein the middle of the main valve body (1) is provided with a valve core control mechanism (2) for controlling the flow rate of liquid or gas, and the surface of the valve core control mechanism (2) is provided with a flow control mechanism (3) for accurately adjusting the flow rate of gas or liquid; The main valve body (1) comprises a stainless steel valve cavity (4), a valve core sliding cavity (5), an inlet chamber (6), an outlet chamber (8) and a connecting assembly. The middle of the stainless steel valve cavity (4) is provided with a valve core sliding cavity (5) extending therethrough from top to bottom. The left and right sides of the stainless steel valve cavity (4) are provided with an inlet chamber (6) and an outlet chamber (8) respectively extending therethrough. The inlet chamber (6) and the outlet chamber (8) are both connected to the valve core sliding cavity (5).

2. The easily adjustable manual orifice throttle valve according to claim 1, characterized in that: The connection assembly comprises an inlet connection flange (7) and an outflow connection flange (9), wherein the middle portion of the inlet chamber (6) is coaxially fixedly connected to the inlet connection flange (7), and the middle portion of the outflow chamber (8) is coaxially fixedly connected to the outflow connection flange (9).

3. The easily adjustable manual orifice throttle valve according to claim 2, characterized in that: The valve core control mechanism (2) comprises a bottom end cover nut (13), a bottom flow blocking block (14), a top flow blocking block (18), a top end cover nut (19), an O-type rubber sealing ring (15), a reset assembly and a valve core control assembly. The bottom end of the stainless steel valve chamber (4) is threadedly connected to the bottom end cover nut (13), the top end of the stainless steel valve chamber (4) is threadedly connected to the top end cover nut (19), the bottom end cover nut (13) and the stainless steel valve chamber (4) are provided with a bottom flow blocking block (14) in the middle, the bottom flow blocking block (14) is provided with an O-type rubber sealing ring (15) on both the upper and lower surfaces, the top flow blocking block (18) is provided in the middle of the stainless steel valve chamber (4) and the top end cover nut (19), and the top flow blocking block (18) is provided with an O-type rubber sealing ring (15) on both the upper and lower surfaces.

4. The easily adjustable manual orifice throttle valve according to claim 3, characterized in that: The reset assembly comprises a spring mounting groove (16) and an elastic spring (17); the top surface of the bottom flow blocking block (14) is provided with six spring mounting grooves (16) in a circular array; and elastic springs (17) are respectively arranged in the middle of the six spring mounting grooves (16).

5. The easily adjustable manual orifice throttle valve according to claim 4, characterized in that: The valve core control assembly comprises an adjusting threaded rod (20), an adjusting hand plate (21) and a choke valve core (10); the middle part of the top choke block (18) is threadedly connected to the adjusting threaded rod (20); one end of the adjusting threaded rod (20) away from the stainless steel valve chamber (4) is fixedly connected to the adjusting hand plate (21); the inner wall of the valve core sliding chamber (5) is slidably connected to the choke valve core (10); the top surface of the choke valve core (10) is tightly attached to the bottom end of the adjusting threaded rod (20); the bottom surface of the choke valve core (10) is tightly attached to the top end of the elastic spring (17); and the choke valve core (10), the adjusting threaded rod (20) and the valve core sliding chamber (5) are coaxially arranged.

6. The easily adjustable manual orifice throttle valve according to claim 5, characterized in that: The choke valve core (10) has five direct current communication slots (11) in a linear array in the middle of one end close to the elastic spring (17), and the choke valve core (10) has a conical gas-liquid flow slot (12) in the middle of one end close to the adjusting threaded rod (20).

7. The easily adjustable manual orifice throttle valve according to claim 6, characterized in that: The flow control mechanism (3) comprises a linkage fixing gasket (22), an extension support cross bar (23), an adjustment positioning longitudinal rod (24), a clamping positioning assembly and an adjustment locking assembly; the surface of the adjustment threaded rod (20) is fixedly connected to two linkage fixing gaskets (22); a certain space is left in the middle of the two linkage fixing gaskets (22); the surface of the adjustment threaded rod (20) is sleeved with an extension support cross bar (23); the extension support cross bar (23) is rotatably connected to the surface of the adjustment threaded rod (20); the extension support cross bar (23) is arranged in the middle of the two linkage fixing gaskets (22); and the two ends of the extension support cross bar (23) are respectively fixedly connected to the adjustment positioning longitudinal rods (24).

8. The easily adjustable manual orifice throttle valve according to claim 7, characterized in that: The surface of the adjusting and positioning longitudinal rod (24) is provided with five plug-in positioning holes (25) in a linear array, the surface of the adjusting and positioning longitudinal rod (24) is provided with five arc-shaped connecting grooves (26) in a linear array, the five arc-shaped connecting grooves (26) are connected to the five plug-in positioning holes (25) in a one-to-one correspondence, and the surface of the adjusting and positioning longitudinal rod (24) is provided with a longitudinal guide groove (27), the longitudinal guide groove (27) is connected to the five arc-shaped connecting grooves (26).

9. The easily adjustable manual orifice throttle valve according to claim 8, characterized in that: The snap-fit ​​positioning assembly comprises a side support block (28), a snap-fit ​​notch (29), a fixed sleeve (30), a plug-in movable pin (31) and an elastic spring (32); the surface of the top end cover nut (19) is fixedly connected to the side support block (28) in a mirror-symmetrical manner; the bottom surface of the side support block (28) is provided with a snap-fit ​​notch (29); the adjustment positioning longitudinal rod (24) is slidably connected to the middle part of the side support block (28); the middle part of the side support block (28) is fixedly connected to the fixed sleeve (30); the inner wall of the fixed sleeve (30) is slidably connected to the plug-in movable pin (31); the interior of the fixed sleeve (30) is provided with an elastic spring (32); the two ends of the elastic spring (32) are respectively fixedly connected to the fixed sleeve (30) and the plug-in movable pin (31).

10. The easily adjustable manual orifice throttle valve according to claim 9, characterized in that: The adjustment locking assembly comprises a movable locking ring (33) and a positioning block (34); the surface of the adjustment positioning longitudinal rod (24) is slidably connected to the movable locking ring (33); the movable locking ring (33) is arranged below the side support block (28); the inner wall of the movable locking ring (33) is fixedly connected to the positioning block (34); the positioning block (34) is slidably connected to the inner walls of the plug-in positioning hole (25), the arc-shaped connecting groove (26) and the longitudinal guide groove (27).

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