Pressure-adjustable thin film throttler and static pressure equipment

Abstract

The invention relates to the technical field of throttlers, and particularly provides a pressure-adjustable thin film throttler and static pressure equipment, the throttler comprises an upper valve body, a lower valve body, a lower valve body, a pressure-adjustable diaphragm and a pressure-adjustable diaphragm, the upper valve body is provided with an oil inlet, an oil outlet and an annular oil cavity, and the oil inlet and the oil outlet are both communicated with the annular oil cavity; the lower valve body is provided with a buffering cavity right opposite to the annular oil cavity. The upper side and the lower side of the elastic film are connected with the upper valve body and the lower valve body correspondingly and isolate the annular oil cavity and the buffering cavity. The vertical sliding part is mounted in the buffer cavity in a sliding manner; the lifting mechanism is used for driving the vertical sliding part to ascend or descend so as to adjust the distance between the elastic film and the top face of the annular oil cavity. The top face of the vertical sliding piece can abut against the bottom face of the elastic film under the action of the lifting mechanism. According to the throttling device, the structure of the thin film throttling device can be effectively simplified, and the production cost of the thin film throttling device can be effectively reduced.

Description

Technical Field

[0001] The present application relates to the technical field of throttles, and in particular to a pressure-adjustable membrane throttle and a static pressure device. Background Art

[0002] Diaphragm throttles are widely used in hydrostatic equipment. The related diaphragm throttles include an oil chamber and an elastic film. There is a gap between the oil chamber and the elastic film. Since the liquid pressure and liquid flow in the oil chamber are related to the size of the gap between the oil chamber and the elastic film, the related technology can actively change the liquid pressure and liquid flow in the oil chamber by utilizing a piezoelectric ceramic drive structure to drive the elastic film to move. However, since the piezoelectric ceramic drive structure has the disadvantages of complex structure and high production cost, the related diaphragm throttles have the problems of complex structure and high production cost.

[0003] There is no effective technical solution to the above problems. It should be noted that the above information disclosed in this section is only used to understand the background of the present invention, and therefore may contain information that does not constitute prior art. Summary of the invention

[0004] The purpose of the present application is to provide a pressure-adjustable diaphragm throttle and static pressure equipment, which can effectively simplify the structure of the diaphragm throttle and reduce the production cost of the diaphragm throttle.

[0005] In a first aspect, the present application provides a pressure-adjustable membrane throttle, comprising: The upper valve body has an oil inlet, an oil outlet and an annular oil cavity, and the oil inlet and the oil outlet are both connected to the annular oil cavity; A lower valve body having a buffer cavity facing the annular oil cavity; An elastic film, the upper and lower sides of which are respectively connected to the upper valve body and the lower valve body and isolate the annular oil chamber and the buffer chamber; A vertical sliding member, slidably mounted in the buffer cavity; A lifting mechanism, used for driving the vertical sliding member to rise or fall, so as to adjust the distance between the elastic film and the top surface of the annular oil chamber; The top surface of the vertical sliding member can contact with the bottom surface of the elastic film under the action of the lifting mechanism.

[0006] The present application provides a pressure-adjustable diaphragm throttle, which can adjust the distance between the elastic diaphragm and the top surface of the annular oil chamber by utilizing a lifting mechanism to drive the vertical sliding member to rise or fall. Since the liquid pressure and liquid flow rate in the annular oil chamber are related to the distance between the elastic diaphragm and the top surface of the annular oil chamber, the present application can actively adjust the liquid pressure and liquid flow rate in the annular oil chamber by utilizing a lifting mechanism to drive the vertical sliding member to rise or fall. That is, the present application is equivalent to replacing the existing piezoelectric ceramic drive structure with a vertical sliding member and a lifting mechanism. Since the structural complexity of the vertical sliding member and the lifting mechanism is less than the structural complexity of the piezoelectric ceramic drive structure, and the production cost of the vertical sliding member and the lifting mechanism is less than the production cost of the piezoelectric ceramic drive structure, the present application can effectively simplify the structure of the diaphragm throttle and reduce the production cost of the diaphragm throttle.

[0007] Optionally, the pressure-adjustable film throttle further includes an elastic element, which is sleeved outside the vertical sliding member and located in the buffer cavity, and the top surface of the elastic element is in contact with the bottom surface of the elastic film.

[0008] The elastic element of this technical solution can reduce the deformation of the elastic film and prevent the elastic film from excessive deformation. Therefore, this technical solution can effectively avoid the situation where the elastic film fails due to excessive deformation of the elastic film caused by excessive liquid pressure in the annular oil chamber.

[0009] Optionally, the elastic element comprises a butterfly spring.

[0010] This technical solution selects a butterfly spring as the elastic element. Since the butterfly spring has the advantages of high reliability and strong load-bearing capacity, this technical solution can effectively avoid the situation where the deformation of the elastic film is still too large and the elastic film fails due to insufficient vertical elastic force provided by the elastic element to the elastic film when the liquid pressure in the annular oil chamber is too high.

[0011] Optionally, the lifting mechanism includes an adjusting bolt, which is pressed against the bottom of the vertical sliding member and is threadedly connected to the lower valve body.

[0012] Optionally, a first inclined surface inclined toward the center of the lower valve body is provided on the side of the vertical sliding member close to the adjusting bolt, and the lifting mechanism also includes a sliding block, one end of the sliding block is in contact with the adjusting bolt, and the other end of the sliding block is provided with a second inclined surface matching the first inclined surface, the first inclined surface is in contact with the second inclined surface, and the sliding direction of the vertical sliding member is perpendicular to the sliding direction of the sliding block.

[0013] Optionally, the lower valve body has a limiting portion for limiting the maximum installation depth of the adjusting bolt in the lower valve body.

[0014] Since the lower valve body of the technical solution has a limit portion for limiting the maximum installation depth of the adjusting bolt in the lower valve body, the limit portion can prevent the adjusting bolt from continuing to drive the slider to slide toward the vertical sliding member. Therefore, the technical solution can effectively avoid the situation where the elastic film fails due to excessive upward deformation of the elastic film caused by excessive sliding of the slider toward the vertical sliding member.

[0015] Optionally, the pressure-adjustable diaphragm throttle further includes a locking assembly, which is threadedly connected to the adjusting bolt, and when there is no need to adjust the liquid pressure and liquid flow in the annular oil chamber, the locking assembly is tightened to contact the lower valve body.

[0016] Since the technical solution can lock the adjusting bolt on the lower valve body by tightening the locking assembly until it contacts the lower valve body when there is no need to adjust the liquid pressure and liquid flow in the annular oil chamber, the technical solution can effectively avoid the situation where the vertical sliding part accidentally slides due to accidental rotation of the adjusting bolt, thereby changing the liquid pressure and liquid flow in the annular oil chamber.

[0017] Optionally, the pressure-adjustable diaphragm throttle further includes a pressure detection assembly, a detection hole is provided on the upper valve body, the pressure detection assembly is mounted on the upper valve body, and the pressure detection assembly is used to collect pressure information in the annular oil chamber through the detection hole.

[0018] Optionally, a boss is provided in the middle of the top surface of the annular oil chamber, the oil inlet is communicated with the annular oil chamber through the boss, and the oil outlet is communicated with the edge of the top surface of the annular oil chamber.

[0019] In a second aspect, the present application further provides a static pressure device, which includes the pressure-adjustable membrane throttle provided in the first aspect above.

[0020] The present application provides a static pressure device that can adjust the distance between the elastic film and the top surface of the annular oil chamber by utilizing a lifting mechanism to drive the vertical sliding member to rise or fall. Since the liquid pressure and liquid flow rate in the annular oil chamber are related to the distance between the elastic film and the top surface of the annular oil chamber, the present application can actively adjust the liquid pressure and liquid flow rate in the annular oil chamber by utilizing a lifting mechanism to drive the vertical sliding member to rise or fall. That is, the present application is equivalent to replacing the existing piezoelectric ceramic drive structure with a vertical sliding member and a lifting mechanism. Since the structural complexity of the vertical sliding member and the lifting mechanism is less than the structural complexity of the piezoelectric ceramic drive structure, and the production cost of the vertical sliding member and the lifting mechanism is less than the production cost of the piezoelectric ceramic drive structure, the present application can effectively simplify the structure of the diaphragm throttle and reduce the production cost of the diaphragm throttle.

[0021] From the above, it can be seen that the pressure-adjustable diaphragm throttle and static pressure equipment provided by the present application can adjust the distance between the elastic film and the top surface of the annular oil chamber by utilizing a lifting mechanism to drive the vertical sliding member to rise or fall. Since the liquid pressure and liquid flow rate in the annular oil chamber are related to the distance between the elastic film and the top surface of the annular oil chamber, the present application can actively adjust the liquid pressure and liquid flow rate in the annular oil chamber by utilizing a lifting mechanism to drive the vertical sliding member to rise or fall. That is, the present application is equivalent to using a vertical sliding member and a lifting mechanism to replace the existing piezoelectric ceramic drive structure. Since the structural complexity of the vertical sliding member and the lifting mechanism is less than the structural complexity of the piezoelectric ceramic drive structure, and the production cost of the vertical sliding member and the lifting mechanism is less than the production cost of the piezoelectric ceramic drive structure, the present application can effectively simplify the structure of the diaphragm throttle and reduce the production cost of the diaphragm throttle. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A schematic diagram of the main structure of a pressure-adjustable membrane throttle provided in an embodiment of the present application.

[0023] Figure 2 For along Figure 1 Schematic diagram of the cross-sectional structure of the AA section line.

[0024] Figure 3 for Figure 2 Schematic diagram of the enlarged structure at B in FIG.

[0025] Figure 4 A schematic diagram of the top structure of a pressure-adjustable membrane throttle provided in an embodiment of the present application.

[0026] Figure numerals: 1. upper valve body; 2. oil inlet; 3. oil outlet; 4. annular oil chamber; 5. lower valve body; 6. buffer chamber; 7. elastic film; 8. vertical sliding member; 9. lifting mechanism; 91. adjusting bolt; 92. slider; 10. elastic element; 11. limit part; 12. locking assembly; 13. pressure detection assembly; 14. boss. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all of the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the application claimed for protection, but merely represents the selected embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without making creative work belong to the scope of protection of the present application.

[0028] It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings. At the same time, in the description of this application, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0029] First, as Figure 1-Figure 4 As shown, the present application provides a pressure-adjustable membrane throttle, which includes: The upper valve body 1 has an oil inlet 2, an oil outlet 3 and an annular oil chamber 4, and the oil inlet 2 and the oil outlet 3 are both connected to the annular oil chamber 4; A lower valve body 5 having a buffer chamber 6 facing the annular oil chamber 4; An elastic film 7, the upper and lower sides of which are respectively connected to the upper valve body 1 and the lower valve body 5 and isolate the annular oil chamber 4 and the buffer chamber 6; A vertical sliding member 8 is slidably mounted in the buffer cavity 6; A lifting mechanism 9 is used to drive the vertical slide 8 to rise or fall, so as to adjust the distance between the elastic film 7 and the top surface of the annular oil chamber 4; The top surface of the vertical sliding member 8 can contact the bottom surface of the elastic film 7 under the action of the lifting mechanism 9 .

[0030] The upper valve body 1 of this embodiment can be an existing upper valve body 1, and the upper valve body 1 has an oil inlet 2, an oil outlet 3 and an annular oil chamber 4. The oil inlet 2 and the oil outlet 3 are both connected to the annular oil chamber 4, so this embodiment can supply hydraulic oil to the annular oil chamber 4 through the oil inlet 2, and the hydraulic oil in the annular oil chamber 4 flows out through the oil outlet 3. The lower valve body 5 of this embodiment can be an existing lower valve body 5, and the lower valve body 5 has a buffer chamber 6 facing the annular oil chamber 4. The elastic film 7 of this embodiment is elastic, that is, the elastic film 7 of this embodiment can be deformed, and the two ends of the elastic film 7 are respectively connected to the upper valve body 1 and the lower valve body 5 and cover the annular oil chamber 4 and the buffer chamber 6, and there are gaps between the elastic film 7 and the top surface of the annular oil chamber 4 and the bottom surface of the buffer chamber 6. Specifically, the elastic film 7 of this embodiment can be deformed toward or away from the top surface of the annular oil chamber 4. When the elastic film 7 is deformed toward or away from the top surface of the annular oil chamber 4, the size of the gap between the top surface of the annular oil chamber 4 and the elastic film 7 (the gap is the throttling gap of the film throttle) will change, and the liquid pressure and liquid flow in the annular oil chamber 4 are related to the size of the gap between the top surface of the annular oil chamber 4 and the elastic film 7. Therefore, this embodiment can be achieved by making the elastic film 7 The elastic film 7 is deformed toward or away from the top surface of the annular oil chamber 4 to adjust the liquid pressure and liquid flow in the annular oil chamber 4. It should be understood that when hydraulic oil is supplied to the annular oil chamber 4 through the oil inlet 2, the hydraulic oil in the annular oil chamber 4 will apply a vertical downward force to the elastic film 7, and the force can cause the elastic film 7 to deform toward the bottom surface of the buffer chamber 6. When the elastic film 7 is not subjected to external force, if the hydraulic oil supplied to the annular oil chamber 4 increases, the vertical downward force applied to the elastic film 7 increases. At this time, the elastic film 7 will deform away from the top surface of the annular oil chamber 4. If the hydraulic oil supplied to the annular oil chamber 4 decreases, the vertical downward force applied to the elastic film 7 decreases. At this time, the elastic film 7 will deform toward the top surface of the annular oil chamber 4. The vertical sliding member 8 of this embodiment is slidably installed in the buffer chamber 6, that is, the vertical sliding member 8 can slide relative to the buffer chamber 6. This embodiment can make the top surface of the vertical sliding member 8 collide with the bottom surface of the elastic film 7 by making the vertical sliding member 8 rise (equivalent to making the vertical sliding member 8 slide toward the top surface of the annular oil chamber 4). This embodiment can also make the top surface of the vertical sliding member 8 no longer collide with the bottom surface of the elastic film 7 by making the vertical sliding member 8 fall (equivalent to making the vertical sliding member 8 slide away from the top surface of the annular oil chamber 4).The lifting mechanism 9 of this embodiment can be a mechanism such as an air cylinder or an oil cylinder that can drive an object to rise or fall. The lifting mechanism 9 is installed on the lower valve body 5 and is connected to the vertical sliding member 8. The lifting mechanism 9 can drive the vertical sliding member 8 to rise or fall. When the lifting mechanism 9 drives the vertical sliding member 8 to rise, the lifting mechanism 9 can apply a vertical upward external force to the elastic film 7 through the vertical sliding member 8. The vertical upward external force is greater than the vertical downward force applied to the elastic film 7 by the hydraulic oil in the annular oil chamber 4. Therefore, this embodiment can use the lifting mechanism 9 to drive the vertical sliding member 8 to rise to deform the elastic film 7 toward the top surface of the annular oil chamber 4, so that the distance between the elastic film 7 and the top surface of the annular oil chamber 4 is reduced (equivalent to reducing the gap between the elastic film 7 and the top surface of the annular oil chamber 4). When the lifting mechanism 9 drives the vertical sliding member 8 to descend, the lifting mechanism 9 The vertical upward external force provided to the elastic film 7 is smaller than the vertical downward force applied to the elastic film 7 by the hydraulic oil in the annular oil chamber 4. Therefore, this embodiment can deform the elastic film 7 away from the top surface of the annular oil chamber 4 by utilizing the lifting mechanism 9 to drive the vertical sliding member 8 to descend, so as to increase the distance between the elastic film 7 and the top surface of the annular oil chamber 4 (equivalent to increasing the gap between the elastic film 7 and the top surface of the annular oil chamber 4). That is, this embodiment can adjust the distance between the elastic film 7 and the top surface of the annular oil chamber 4 by utilizing the lifting mechanism 9 to drive the vertical sliding member 8 to rise or fall. It should be understood that in the process of the lifting mechanism 9 driving the vertical sliding member 8 to descend, only after the elastic force generated by the deformation of the elastic film 7 can offset the vertical downward force applied to the elastic film 7 by the hydraulic oil in the annular oil chamber 4, the top surface of the vertical sliding member 8 can be freed from the conflict with the bottom surface of the elastic film 7.

[0031] The present application provides a pressure-adjustable diaphragm throttle, which can adjust the distance between the elastic diaphragm 7 and the top surface of the annular oil chamber 4 by utilizing a lifting mechanism 9 to drive the vertical sliding member 8 to rise or fall. Since the liquid pressure and liquid flow rate in the annular oil chamber 4 are related to the distance between the elastic diaphragm 7 and the top surface of the annular oil chamber 4, the present application can actively adjust the liquid pressure and liquid flow rate in the annular oil chamber 4 by utilizing the lifting mechanism 9 to drive the vertical sliding member 8 to rise or fall. That is, the present application is equivalent to replacing the existing piezoelectric ceramic drive structure with the vertical sliding member 8 and the lifting mechanism 9. Since the structural complexity of the vertical sliding member 8 and the lifting mechanism 9 is less than the structural complexity of the piezoelectric ceramic drive structure, and the production cost of the vertical sliding member 8 and the lifting mechanism 9 is less than the production cost of the piezoelectric ceramic drive structure, the present application can effectively simplify the structure of the diaphragm throttle and reduce the production cost of the diaphragm throttle.

[0032] In some preferred embodiments, the pressure-adjustable membrane throttle further includes an elastic element 10, which is sleeved outside the vertical sliding member 8 and located in the buffer chamber 6, and the top surface of the elastic element 10 is in contact with the bottom surface of the elastic membrane 7. The elastic element 10 of this embodiment can be an elastic element such as a spring or a rubber block, and the elastic element 10 is sleeved outside the vertical sliding member 8 and located in the buffer chamber 6, and the top surface of the elastic element 10 is in contact with the bottom surface of the elastic membrane 7. When hydraulic oil exists in the annular oil chamber 4, the hydraulic oil will apply a vertical downward force to the elastic membrane 7, and the force will cause the elastic membrane 7 to have a tendency to deform away from the top surface of the annular oil chamber 4. When the vertical downward force applied by the hydraulic oil to the elastic membrane 7 is small, the elastic element 10 provides a vertical upward elastic force to the elastic membrane 7 to offset the vertical downward force. The elastic film 7 will not be deformed when the vertical downward force applied by the hydraulic oil to the elastic film 7 is large, that is, when the vertical downward force applied by the hydraulic oil to the elastic film 7 is small, the elastic element 10 provides a vertical upward elastic force to the elastic film 7 to offset most of the vertical downward force, that is, the elastic element 10 can reduce the deformation of the elastic film 7 and prevent the elastic film 7 from excessive deformation. Therefore, this embodiment can effectively avoid the situation where the deformation of the elastic film 7 is too large due to the excessive liquid pressure in the annular oil chamber 4, resulting in the failure of the elastic film 7.

[0033] In some preferred embodiments, the elastic element 10 includes a butterfly spring. This embodiment selects a butterfly spring as the elastic element 10. Since the butterfly spring has the advantages of high reliability and strong load-bearing capacity, this embodiment can effectively avoid the situation where the deformation of the elastic film 7 is still too large and the elastic film 7 fails due to the insufficient vertical upward elastic force provided by the elastic element 10 to the elastic film 7 when the liquid pressure in the annular oil chamber 4 is too large.

[0034] In some preferred embodiments, the lifting mechanism 9 includes an adjusting bolt 91, which is pressed against the bottom of the vertical slide 8 and is threadedly connected to the lower valve body 5. The lifting mechanism 9 of this embodiment includes an adjusting bolt 91. Specifically, the top surface of the adjusting bolt 91 of this embodiment contacts the bottom surface of the vertical slide 8. This embodiment can drive the vertical slide 8 to rise by tightening the adjusting bolt 91. When the adjusting bolt 91 is loosened, the adjusting bolt 91 will move away from the annular oil chamber 4, and under the action of gravity, the vertical slide 8 will follow the adjusting bolt 91 to move away from the annular oil chamber 4. Therefore, this embodiment can drive the vertical slide 8 to fall by loosening the adjusting bolt 91. It should be understood that the sliding direction of the adjusting bolt 91 of this embodiment is the same as the sliding direction of the vertical slide 8.

[0035] In some preferred embodiments, a first inclined surface inclined toward the center of the lower valve body 5 is provided on one side of the vertical sliding member 8 close to the adjusting bolt 91, and the lifting mechanism 9 further comprises a slider 92, one end of the slider 92 abuts against the adjusting bolt 91, and the other end of the slider 92 is provided with a second inclined surface matching the first inclined surface, the first inclined surface abuts against the second inclined surface, and the sliding direction of the vertical sliding member 8 is perpendicular to the sliding direction of the slider 92. This embodiment is equivalent to making the adjusting bolt 91 press against the bottom of the vertical sliding member 8 through the slider 92. Since the adjusting bolt 91 of this embodiment abuts against the slider 92, this embodiment can drive the slider 92 to slide toward the vertical sliding member 8 by tightening the adjusting bolt 91, and since the first inclined surface of this embodiment abuts against the second inclined surface, when the adjusting bolt 91 drives the slider 92 to slide toward the vertical sliding member 8, the vertical sliding member 8 will slide upward along the second inclined surface, so this embodiment can drive the vertical sliding member 8 to rise by tightening the adjusting bolt 91, and since the first inclined surface abuts against the second inclined surface, The vertical sliding member 8 will apply a horizontal force from the sliding member 92 to the adjusting bolt 91 to the sliding member 92 through the first inclined surface, and when the adjusting bolt 91 is loosened (that is, the adjusting bolt 91 slides away from the vertical sliding member 8), the vertical sliding member 8 slides downward along the second inclined surface, and the horizontal force applied by the vertical sliding member 8 to the sliding member 92 will drive the sliding member 92 to slide toward the adjusting bolt 91, so that the adjusting bolt 91 maintains contact with the sliding member 92. Therefore, the adjusting bolt 91 of this embodiment does not need to be fixedly connected to the sliding member 92, and this embodiment can lower the vertical sliding member 8 by loosening the adjusting bolt 91.

[0036] In some preferred embodiments, the lower valve body 5 has a limit portion 11 for limiting the maximum installation depth of the adjusting bolt 91 in the lower valve body 5. Since the lower valve body 5 of this embodiment has the limit portion 11 for limiting the maximum installation depth of the adjusting bolt 91 in the lower valve body 5, the limit portion 11 can prevent the adjusting bolt 91 from continuing to drive the slider 92 to slide toward the vertical sliding member 8, so this embodiment can effectively avoid the situation where the elastic film 7 fails due to excessive upward deformation of the elastic film 7 caused by excessive sliding of the slider 92 toward the vertical sliding member 8.

[0037] In some preferred embodiments, the pressure-adjustable film throttle further includes a locking assembly 12, which is threadedly connected to the adjusting bolt 91, and the locking assembly 12 is tightened to conflict with the lower valve body 5 when there is no need to adjust the liquid pressure and liquid flow in the annular oil chamber 4. The locking assembly 12 of this embodiment is preferably a locking nut, because when there is no need to adjust the liquid pressure and liquid flow in the annular oil chamber 4, this embodiment can lock and fix the adjusting bolt 91 on the lower valve body 5 by tightening the locking assembly 12 to conflict with the lower valve body 5, so this embodiment can effectively avoid the situation where the vertical sliding member 8 accidentally slides due to the accidental rotation of the adjusting bolt 91, and the liquid pressure and liquid flow in the annular oil chamber 4 change.

[0038] In some preferred embodiments, the pressure-adjustable film throttle further includes a pressure detection component 13, a detection hole is provided on the upper valve body 1, the pressure detection component 13 is installed on the upper valve body 1, and the pressure detection component 13 is used to collect pressure information in the annular oil chamber 4 through the detection hole. The pressure detection component 13 of this embodiment is preferably a pressure sensor, and the pressure detection component 13 can collect pressure information in the annular oil chamber 4 through the detection hole. Therefore, this embodiment can adjust the liquid pressure in the annular oil chamber 4 to a preset pressure by driving the vertical slide 8 to rise or fall by the lifting mechanism 9 based on the pressure information collected by the pressure detection component 13. Preferably, the pressure-adjustable diaphragm throttle of this embodiment also includes a controller, and the lifting mechanism 9 of this embodiment also includes a motor, which is used to drive the adjusting bolt 91 to rotate. The controller can control the motor to drive the adjusting bolt 91 to rotate according to the pressure information collected by the pressure detection component 13 and the preset pressure, so that the pressure information is the same as the preset pressure. Specifically, the process of controlling the motor to drive the adjusting bolt 91 to rotate according to the pressure information collected by the pressure detection component 13 and the preset pressure can be: calculating the pressure adjustment amount according to the pressure information collected by the pressure detection component 13 and the preset pressure; obtaining the motor rotation amount according to the pressure adjustment amount and the preset conversion relationship (which can be a pre-built database or mapping relationship); and controlling the motor to drive the adjusting bolt 91 to rotate according to the motor rotation amount.

[0039] In some preferred embodiments, a boss 14 is provided in the middle of the top surface of the annular oil chamber 4, the oil inlet 2 is connected to the annular oil chamber 4 through the boss 14, and the oil outlet 3 is connected to the edge of the top surface of the annular oil chamber 4. This embodiment is equivalent to allowing the hydraulic oil to flow into the annular oil chamber 4 from the middle of the top surface of the annular oil chamber 4 and allowing the hydraulic oil in the annular oil chamber 4 to flow out from the edge of the top surface of the annular oil chamber 4.

[0040] From the above, it can be seen that the pressure-adjustable diaphragm throttle provided by the present application can adjust the distance between the elastic film 7 and the top surface of the annular oil chamber 4 by utilizing the lifting mechanism 9 to drive the vertical sliding member 8 to rise or fall. Since the liquid pressure and liquid flow rate in the annular oil chamber 4 are related to the distance between the elastic film 7 and the top surface of the annular oil chamber 4, the present application can actively adjust the liquid pressure and liquid flow rate in the annular oil chamber 4 by utilizing the lifting mechanism 9 to drive the vertical sliding member 8 to rise or fall. That is, the present application is equivalent to using the vertical sliding member 8 and the lifting mechanism 9 to replace the existing piezoelectric ceramic drive structure. Since the structural complexity of the vertical sliding member 8 and the lifting mechanism 9 is less than the structural complexity of the piezoelectric ceramic drive structure, and the production cost of the vertical sliding member 8 and the lifting mechanism 9 is less than the production cost of the piezoelectric ceramic drive structure, the present application can effectively simplify the structure of the diaphragm throttle and reduce the production cost of the diaphragm throttle.

[0041] In a second aspect, the present application further provides a static pressure device, which includes the pressure-adjustable membrane throttle provided in the first aspect above.

[0042] An embodiment of the present application provides a static pressure device, which includes the pressure-adjustable diaphragm throttle provided in the first aspect. The principle of the static pressure device provided in this embodiment is the same as the principle of the pressure-adjustable diaphragm throttle provided in the first aspect, and will not be discussed in detail here.

[0043] From the above, it can be seen that the pressure-adjustable diaphragm throttle and static pressure equipment provided by the present application can adjust the distance between the elastic film 7 and the top surface of the annular oil chamber 4 by utilizing the lifting mechanism 9 to drive the vertical sliding member 8 to rise or fall. Since the liquid pressure and liquid flow rate in the annular oil chamber 4 are related to the distance between the elastic film 7 and the top surface of the annular oil chamber 4, the present application can actively adjust the liquid pressure and liquid flow rate in the annular oil chamber 4 by utilizing the lifting mechanism 9 to drive the vertical sliding member 8 to rise or fall. That is, the present application is equivalent to using the vertical sliding member 8 and the lifting mechanism 9 to replace the existing piezoelectric ceramic drive structure. Since the structural complexity of the vertical sliding member 8 and the lifting mechanism 9 is less than the structural complexity of the piezoelectric ceramic drive structure, and the production cost of the vertical sliding member 8 and the lifting mechanism 9 is less than the production cost of the piezoelectric ceramic drive structure, the present application can effectively simplify the structure of the diaphragm throttle and reduce the production cost of the diaphragm throttle.

[0044] In the embodiments provided in the present application, it should be understood that, herein, relational terms such as first and second, etc. are merely 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.

[0045] The above description is only an embodiment of the present application and is not intended to limit the protection scope of the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A pressure-adjustable membrane throttle, characterized in that: The pressure-adjustable film throttle comprises: An upper valve body, which has an oil inlet, an oil outlet and an annular oil cavity, wherein the oil inlet and the oil outlet are both connected to the annular oil cavity; A lower valve body having a buffer cavity facing the annular oil cavity; An elastic film, the upper and lower sides of which are respectively connected to the upper valve body and the lower valve body and isolate the annular oil chamber and the buffer chamber; A vertical sliding member, slidably mounted in the buffer cavity; A lifting mechanism, used for driving the vertical sliding member to rise or fall, so as to adjust the distance between the elastic film and the top surface of the annular oil chamber; The top surface of the vertical sliding member can contact the bottom surface of the elastic film under the action of the lifting mechanism.

2. The pressure-adjustable membrane throttle according to claim 1, characterized in that: The pressure-adjustable film throttle further comprises an elastic element, which is sleeved outside the vertical sliding member and located in the buffer cavity, and the top surface of the elastic element is in contact with the bottom surface of the elastic film.

3. The pressure-adjustable membrane throttle according to claim 2, characterized in that: The elastic element includes a butterfly spring.

4. The pressure-adjustable membrane throttle according to claim 1, characterized in that: The lifting mechanism comprises an adjusting bolt, which is pressed against the bottom of the vertical sliding member and is threadedly connected with the lower valve body.

5. The pressure-adjustable membrane throttle according to claim 4, characterized in that: A first inclined surface inclined toward the center of the lower valve body is provided on one side of the vertical sliding member close to the adjusting bolt, and the lifting mechanism also includes a sliding block, one end of the sliding block is in contact with the adjusting bolt, and the other end of the sliding block is provided with a second inclined surface matching the first inclined surface, the first inclined surface is in contact with the second inclined surface, and the sliding direction of the vertical sliding member is perpendicular to the sliding direction of the sliding block.

6. The pressure-adjustable membrane throttle according to claim 4, characterized in that: The lower valve body has a limiting portion for limiting a maximum installation depth of the adjusting bolt in the lower valve body.

7. The pressure-adjustable membrane throttle according to claim 4, characterized in that: The pressure-adjustable film throttle also includes a locking assembly, which is threadedly connected to the adjusting bolt. When there is no need to adjust the liquid pressure and liquid flow in the annular oil chamber, the locking assembly is tightened until it contacts the lower valve body.

8. The pressure-adjustable membrane throttle according to claim 1, characterized in that: The pressure-adjustable film throttle also includes a pressure detection component. A detection hole is provided on the upper valve body. The pressure detection component is installed on the upper valve body. The pressure detection component is used to collect pressure information in the annular oil chamber through the detection hole.

9. The pressure-adjustable membrane throttle according to claim 1, characterized in that: A boss is provided in the middle of the top surface of the annular oil chamber, the oil inlet is communicated with the annular oil chamber through the boss, and the oil outlet is communicated with the edge of the top surface of the annular oil chamber.

10. A static pressure device, characterized in that: The static pressure device comprises a pressure-adjustable membrane throttle as described in any one of claims 1-9.

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