A spiral pressure regulating device

Abstract

This utility model discloses a spiral pressure regulating device, comprising: a syringe body with an anti-rotation groove inside; a spiral adjusting rod disposed inside the syringe body, with a lifting spiral rod at one end facing the syringe body, the lifting spiral rod being positioned within the anti-rotation groove; a transmission rod disposed between the syringe body and the lifting spiral rod, with a stop head at the end of the transmission rod away from the syringe body, and a spring disposed between the transmission rod and the lifting spiral rod; and a fixing ring disposed at the end of the spiral adjusting rod facing the syringe body. The lifting spiral rod is used to push the transmission rod to move, thereby changing the compression stroke of the spring; when the spiral adjusting rod is adjusted to the target pressure, the fixing ring locks the spiral adjusting rod. This application uses the lifting spiral rod to push or release pressure to the transmission rod, thereby changing the compression stroke of the spring and outputting preload; when the spiral adjusting rod is adjusted to the target pressure, the fixing ring locks the spiral adjusting rod.

Description

Technical Field

[0001] This utility model belongs to the field of mechanical precision transmission and pressure control technology, and specifically relates to a spiral pressure regulating device. Background Technology

[0002] In existing pressure regulating mechanisms, springs are commonly used to provide pressure or preload. However, these traditional mechanisms have significant limitations. The compression stroke of the spring in traditional mechanisms is fixed and cannot be adjusted. This directly leads to the following problems: the initial compression of the spring cannot be changed according to actual needs; the output pressure generated by the spring is a fixed value and cannot be precisely and linearly adjusted. These inherent drawbacks greatly reduce the adaptability and flexibility of the equipment under different operating conditions, making it unsuitable for applications requiring precise pressure control. Utility Model Content

[0003] To address the aforementioned problems, the primary objective of this invention is to provide a spiral pressure regulating device that solves the technical problem that current pressure regulating mechanisms cannot precisely, linearly, and lockably regulate pressure.

[0004] To achieve the above objectives, the technical solution of this utility model is as follows:

[0005] This utility model provides a spiral pressure regulating device, comprising:

[0006] The syringe body has an anti-rotation groove inside;

[0007] A spiral adjusting rod is provided inside the syringe body, and a lifting spiral rod is provided at one end facing the syringe body. The lifting spiral rod is disposed in the anti-rotation groove.

[0008] A conveying rod is disposed between the syringe body and the lifting screw rod. The end of the conveying rod away from the syringe body is provided with a stop round head, and a spring is provided between the conveying rod and the lifting screw rod.

[0009] A retaining ring is located at the end of the spiral adjusting rod facing the syringe body; wherein...

[0010] The lifting screw is used to push the transmission rod to move and change the compression stroke of the spring; when the screw adjustment rod is adjusted to the target pressure, the fixing ring locks the screw adjustment rod.

[0011] Furthermore, it also includes:

[0012] A retaining ring is used to connect the fixing ring to the spiral adjusting rod.

[0013] Furthermore, the outer surface of the spiral adjusting rod is provided with an external thread, and the inner surface of the lifting spiral rod is provided with an internal thread, wherein the internal thread of the lifting spiral rod is adapted to the external thread of the spiral adjusting rod.

[0014] Furthermore, the anti-rotation groove is formed by recessing from the inner circumferential surface of the syringe body toward the interior of the syringe body, and the anti-rotation groove extends along the length direction of the syringe body.

[0015] Furthermore, the outer peripheral surface of the lifting screw is provided with a protrusion, and the anti-rotation groove cooperates with the protrusion.

[0016] Furthermore, the anti-rotation groove is configured as a keyway, the protrusion is configured as a key structure, and the keyway cooperates with the key structure.

[0017] Furthermore, the retaining ring locks the spiral adjusting rod via a locking assembly.

[0018] Furthermore, the fixing ring is provided with a through hole, which penetrates the fixing ring; the syringe body is provided with a second hole, which penetrates the syringe body; the locking assembly includes a second stop screw; when the second hole is aligned with the through hole, the second stop screw passes through the second hole and the through hole to lock the spiral adjusting rod.

[0019] Furthermore, the syringe body is also provided with a first hole, which penetrates the syringe body; the locking assembly also includes a first stop screw; the first stop screw penetrates the first hole and presses against the fixing ring, and is used to align the through hole with the second hole.

[0020] Furthermore, the stop head is fixedly connected to the transmission rod by a third stop screw.

[0021] Compared with the prior art, this application offers the following advantages: The spiral pressure regulating device includes: a syringe body with an anti-rotation groove inside; a spiral adjusting rod disposed inside the syringe body, with a lifting spiral rod at one end facing the syringe body, the lifting spiral rod being positioned within the anti-rotation groove; a transmission rod disposed between the syringe body and the lifting spiral rod, with a stop head at the end of the transmission rod away from the syringe body, and a spring between the transmission rod and the lifting spiral rod; and a fixing ring disposed at the end of the spiral adjusting rod facing the syringe body. The lifting spiral rod is used to push the transmission rod to move, thereby changing the compression stroke of the spring. When the spiral adjusting rod is adjusted to the target pressure, the fixing ring locks the spiral adjusting rod. This spiral pressure regulating device utilizes the anti-rotation groove inside the syringe body, which serves as the anti-rotation structure of the spiral pressure regulating device; the spiral adjusting rod and the lifting spiral rod serve as the transmission components of the spiral pressure regulating device; the transmission rod, the stop head, and the spring serve as the adjustable pre-tightening mechanism of the spiral pressure regulating device; and the fixing ring and locking assembly serve as the lockable adjustment mechanism of the spiral pressure regulating device. The lifting screw is used to push or release pressure to the transmission rod to change the compression stroke of the spring and output preload; when the screw adjustment rod is adjusted to the target pressure, the screw adjustment rod is locked by the retaining ring. Attached Figure Description

[0022] Figure 1 This is a three-dimensional schematic diagram of a spiral pressure regulating device according to the present invention.

[0023] Figure 2 yes Figure 1 An explosive schematic diagram of a spiral pressure regulating device.

[0024] Figure 3 This is a schematic diagram illustrating the working principle of a spiral pressure regulating device according to this utility model.

[0025] In the diagram: 1. Syringe body; 9. Anti-rotation groove; 5. Spiral adjusting rod; 4. Lifting spiral rod; 2. Transmitting rod; 3. Spring; 6. Stopping round head; 7. Fixing ring; 8. Snap ring; 71. Through hole; 111. Second hole; 110. First hole; 11. Second stop screw; 10. First stop screw. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0027] To achieve the above objectives, the technical solution of this utility model is as follows:

[0028] See Figures 1 to 3 This utility model provides a spiral pressure regulating device, comprising: a syringe body 1 with an anti-rotation groove 9 inside; a spiral adjusting rod 5 disposed inside the syringe body 1, with a lifting spiral rod 4 at one end facing the syringe body 1, the lifting spiral rod 4 being disposed in the anti-rotation groove 9; a transmission rod 2 disposed between the syringe body 1 and the lifting spiral rod 4, with a stop head 6 at the end of the transmission rod 2 away from the syringe body 1, and a spring 3 disposed between the transmission rod 2 and the lifting spiral rod 4; and a fixing ring 7 disposed at the end of the spiral adjusting rod 5 facing the syringe body 1; wherein, the lifting spiral rod 4 is used to push the transmission rod 2 to move to change the compression stroke of the spring 3; when the spiral adjusting rod 5 is adjusted to the target pressure, the fixing ring 7 locks the spiral adjusting rod 5.

[0029] Therefore, the spiral pressure regulating mechanism provided by this utility model accurately converts the user's rotation of the spiral adjusting rod 5 into the linear displacement of the lifting spiral rod 4. The lifting spiral rod 4 is configured in the anti-rotation groove 9 to limit the circumferential rotation of the lifting spiral rod 4, ensuring that the lifting spiral rod 4 can only perform axial linear movement when the spiral adjusting rod 5 rotates. By pushing or releasing pressure to the transmission rod 2 through the lifting spiral rod 4, the compression stroke or preload of the spring 3 is changed, ultimately achieving continuous and precise adjustment of the output pressure. The fixing ring 7 is relatively fixed to the spiral adjusting rod 5. When the spiral adjusting rod 5 is rotated to the target pressure, the fixing ring 7 effectively locks the spiral adjusting rod 5 through the locking assembly, preventing the spiral adjusting rod 5 from rotating accidentally, thereby stably maintaining the pressure value set by the spiral adjusting rod 5. Therefore, the spiral pressure regulating mechanism provided by this utility model can steplessly and precisely control the pressure through a manual knob, and can be locked at any position, perfectly solving the problem that current pressure regulating mechanisms cannot adjust pressure precisely, linearly, and lockably.

[0030] Furthermore, the spiral pressure regulating device provided by this utility model also includes: a retaining ring 8, and a fixing ring 7 is connected to the spiral adjusting rod 5 through the retaining ring 8. Specifically, the fixing ring 7 is fixed relative to the spiral adjusting rod 5 through the retaining ring 8.

[0031] Furthermore, the retaining ring 8 can be specifically set as a retaining spring or an elastic retaining ring.

[0032] Furthermore, the outer surface of the screw adjusting rod 5 is provided with an external thread, and the inner surface of the lifting screw rod 4 is provided with an internal thread. The internal thread of the lifting screw rod 4 is adapted to the external thread of the screw adjusting rod 5. By adapting the internal thread of the lifting screw rod 4 to the external thread of the screw adjusting rod 5, the user's rotational motion is precisely converted into linear displacement.

[0033] Furthermore, an anti-rotation groove 9 is formed by recessing from the inner circumferential surface of the syringe body 1 toward the interior of the syringe body 1, and the anti-rotation groove 9 extends along the length direction of the syringe body 1.

[0034] Furthermore, the outer peripheral surface of the lifting screw rod 4 is provided with a protrusion (not labeled), and the anti-rotation groove 9 cooperates with the protrusion.

[0035] Furthermore, the anti-rotation groove 9 is designed as a keyway, and the protrusion is designed as a key structure component, with the keyway and key structure component fitting together. This achieves a precise conversion between the rotational motion of the screw adjusting rod 5 and the linear motion of the lifting screw rod 4, which is the basis for the adjustment function of the screw-type pressure regulating device of this utility model.

[0036] It should be noted that the linear motion of the lifting screw 4 directly pushes or releases the transmission rod 2, thereby changing the compression stroke of the spring 3, which is equivalent to changing the preload of the spring 3, ultimately achieving continuous and precise adjustment of the output pressure. Utilizing the linear motion of the lifting screw 4 to change the compression state of the spring 3 is the core of pressure regulation.

[0037] Furthermore, the retaining ring 7 locks the spiral adjusting rod 5 via the locking assembly.

[0038] Furthermore, the retaining ring 7 is provided with a through hole 71, which penetrates the retaining ring 7; the syringe body 1 is provided with a second hole 111, which penetrates the syringe body 1; the locking assembly includes a second stop screw 11; when the second hole 111 is aligned with the through hole 71, the second stop screw 11 passes through the second hole 111 and the through hole 71 to lock the spiral adjusting rod 5. The second stop screw 11 is used to lock the spiral adjusting rod 5 to prevent the spiral adjusting rod 5 from being adjusted arbitrarily, thereby preventing the spiral adjusting rod 5 from rotating accidentally.

[0039] Furthermore, the syringe body 1 is also provided with a first hole 110, which penetrates the syringe body 1; the locking assembly also includes a first stop screw 10; the first stop screw 10 penetrates the first hole 110 and presses against the retaining ring 7, and is used to align the through hole 71 with the second hole 111. Thus, the first stop screw 10 is used to limit the circumferential position of the retaining ring 7 to prevent the retaining ring 7 from rotating circumferentially.

[0040] After the screw adjusting rod 5 is adjusted to the target pressure, tighten the second stop screw 11. The end of the second stop screw 11 presses against the fixing ring 7, and the friction generated effectively locks the screw adjusting rod 5, preventing the screw adjusting rod 5 from rotating accidentally. This stabilizes the pressure value set by the screw adjusting rod 5, ensuring the stability and reliability of the adjustment result of the screw adjusting rod 5. This is the key to the practicality of the screw pressure regulating device provided by this utility model.

[0041] Furthermore, the shift head 6 is fixedly connected to the transmission rod 2 by the third stop screw.

[0042] After the screw adjusting rod 5 is adjusted to the target pressure, tighten the second stop screw 11. The end of the second stop screw 11 presses against the fixing ring 7, and the friction generated effectively locks the screw adjusting rod 5, preventing the screw adjusting rod 5 from rotating accidentally. This stabilizes the pressure value set by the screw adjusting rod 5, ensuring the stability and reliability of the adjustment result of the screw adjusting rod 5. This is the key to the practicality of the screw pressure regulating device provided by this utility model.

[0043] The installation steps of the spiral pressure regulating device provided by this utility model are as follows:

[0044] Step 1: The stop round head 6 is fixed to the top of the transmission rod 2 by the third screw and inserted into the syringe body 1; wherein, the top of the transmission rod 2 is the end of the transmission rod 2 that is close to the syringe body 1;

[0045] Step 2: Next, insert spring 3 into the outer periphery of the conveyor rod 2;

[0046] Step 3: Insert the retaining ring 7 into the bottom of the screw adjusting rod 5 and secure it with the retaining ring 8;

[0047] Step 4: Insert the lifting screw rod 4 into the screw adjusting rod 5, and then insert it into the syringe body 1 together;

[0048] Step 5: When inserting the syringe body 1, align the lifting screw 4 with the anti-rotation groove 9 of the syringe body 1;

[0049] Step 6: Use the first stop screw 10 to press against the retaining ring 7, and align the first hole 71 on the retaining ring 7 with the second hole 111 on the syringe body 1;

[0050] Step 7: Finally, install the second stop screw 11 in the second hole 111. The second stop screw 11 serves to lock the spiral adjusting rod 5.

[0051] Step 8: The spiral pressure regulating device is now assembled.

[0052] The working principle of the spiral pressure regulating device provided by this utility model is as follows:

[0053] When the user rotates the knob screw 5 in both directions, the lifting screw 4 is restricted from rotating due to the sliding limit cooperation between it and the anti-rotation groove 9. The lifting screw 4 moves in a straight line within the syringe body 1, i.e., it moves axially, such as pushing forward or backward. The corresponding spring 3 also extends or is compressed. The transmission rod 2 moves up or down with the spring 3, causing the stroke of the spring 3 to change continuously. That is, the spring 3 pushes the transmission rod 2 to achieve pressure transmission, and the relative pressure of the screw adjustment rod 5 changes accordingly.

[0054] It should be added that the fixing ring 7 acts as an intermediate sleeve, axially fixed to the screw adjusting rod 5 via the retaining ring 8. Simultaneously, it internally drives the lifting screw rod 4 to rotate circumferentially, but the lifting screw rod 4 itself is restricted from rotation, thus converting it into axial movement. Specifically, the fixing ring 7 is a sleeve-shaped part that fits directly onto the body of the screw adjusting rod 5. Typically, the screw adjusting rod 5 has an annular groove. The retaining ring 8 is installed into the groove. Because the outer diameter of the retaining ring 8 is larger than the inner diameter of the fixing ring 7, the retaining ring 8 axially locks the fixing ring 7 to a specific position on the screw adjusting rod 5. After the fixing ring 7 is fixed by the retaining ring 8, the screw adjusting rod 5, the fixing ring 7, and the retaining ring 8 become a synchronously rotating unit. When the user rotates the screw adjusting rod 5, the fixing ring 7 and the retaining ring 8 rotate together with the screw adjusting rod 5. Furthermore, the inner hole of the retaining ring 7 and the outer surface of the lifting screw rod 4 are equipped with a matching transmission structure. The transmission structure is a spline connection or a keyway connection. The keyway fit allows the retaining ring 7 to transmit rotational torque to the lifting screw rod 4, causing the lifting screw rod 4 to rotate together. At the same time, due to the keyway fit, the lifting screw rod 4 can move freely axially relative to the retaining ring 7. The bottom of the lifting screw rod 4 is threadedly fitted to the screw adjusting rod 5. When the retaining ring 7 drives the lifting screw rod 4 to rotate, the protrusion 41 on the outside of the lifting screw rod 4 is restricted by the anti-rotation groove 9 of the syringe body 1, preventing the lifting screw rod 4 from rotating on its own.

[0055] Therefore, the force of the rotating screw adjusting rod 5 is effectively transmitted to the lifting screw rod 4 through the fixed ring 7 and the keyway structure inside the fixed ring 7, causing the lifting screw rod 4 to rotate. Since the lifting screw rod 4 is restricted by the anti-rotation groove 9, the rotational tendency of the lifting screw rod 4 is forcibly converted into axial linear motion, thereby compressing or releasing the spring 3. The retaining ring 8 axially fixes the fixed ring 7 to the screw adjusting rod 5, but allows free axial movement between the fixed ring 7 and the lifting screw rod 4, perfectly resolving the contradiction between transmission and movement.

[0056] In addition, the fixed ring 7 is provided with a through hole 71. When the rotating screw adjustment rod 5 is rotated to the desired position, the second stop screw 11 is tightened. The end of the second stop screw 11 will push into the groove of the fixed ring 7 or directly press against the outer wall of the fixed ring 7. Since the fixed ring 7 is fixed to the screw adjustment rod 5 by the retaining ring 8, locking the fixed ring 7 is equivalent to locking the screw adjustment rod 5, preventing it from rotating, thereby locking the pressure setting of the entire mechanism.

[0057] Compared with the prior art, this application has the following advantages: The spiral pressure regulating device includes: a syringe body 1 with an anti-rotation groove 9 inside; a spiral adjusting rod 5 located inside the syringe body 1, with a lifting spiral rod 4 at one end facing the syringe body 1, the lifting spiral rod 4 being disposed in the anti-rotation groove 9; a transmission rod 2 located between the syringe body and the lifting spiral rod 4, with a stop head 6 at the end of the transmission rod 2 away from the syringe body 1, and a spring 3 located between the transmission rod 2 and the lifting spiral rod 4; and a fixing ring 7 located at the end of the spiral adjusting rod 5 facing the syringe body 1; wherein, the lifting spiral rod 4 is used to push the transmission rod 2 to move to change the compression stroke of the spring 3; when the spiral adjusting rod 5 is adjusted to the target pressure, the fixing ring 7 locks the spiral adjusting rod 5. The spiral pressure regulating device uses an anti-rotation groove 9 inside the syringe body 1 as an anti-rotation structure. The spiral adjusting rod 5 and the lifting spiral rod 4 serve as the transmission components of the spiral pressure regulating device. The transmission rod 2, the stop head 6, and the spring 3 serve as the adjustable preload mechanism of the spiral pressure regulating device. The fixing ring 7 and the locking assembly serve as the lockable adjustment mechanism of the spiral pressure regulating device. The lifting spiral rod 4 is used to push or release pressure to the transmission rod 2, change the compression stroke of the spring 3, and output preload force. When the spiral adjusting rod 5 is adjusted to the target pressure, the fixing ring 7 locks the spiral adjusting rod 5.

[0058] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A helical pressure regulating device, characterized by, include: The syringe body has an anti-rotation groove inside; A spiral adjusting rod is provided inside the syringe body, and a lifting spiral rod is provided at one end facing the syringe body. The lifting spiral rod is disposed in the anti-rotation groove. A conveying rod is disposed between the syringe body and the lifting screw rod. The end of the conveying rod away from the syringe body is provided with a stop round head, and a spring is provided between the conveying rod and the lifting screw rod. A retaining ring is located at the end of the spiral adjusting rod facing the syringe body; wherein... The lifting screw is used to push the transmission rod to move and change the compression stroke of the spring; when the screw adjustment rod is adjusted to the target pressure, the fixing ring locks the screw adjustment rod.

2. A helical pressure regulating device as claimed in claim 1, wherein, Also includes: A retaining ring is used to connect the fixing ring to the spiral adjusting rod.

3. A helical pressure regulating device as defined in claim 1, wherein, The outer surface of the spiral adjusting rod is provided with an external thread, and the inner surface of the lifting spiral rod is provided with an internal thread. The internal thread of the lifting spiral rod is adapted to the external thread of the spiral adjusting rod.

4. A helical pressure regulating device as defined in claim 1, wherein, The anti-rotation groove is formed by recessing from the inner circumferential surface of the syringe body toward the interior of the syringe body, and the anti-rotation groove extends along the length direction of the syringe body.

5. A helical pressure regulating device as claimed in claim 4, wherein, The outer peripheral surface of the lifting screw is provided with a protrusion, and the anti-rotation groove cooperates with the protrusion.

6. A helical pressure regulating device as claimed in claim 5, wherein The anti-rotation groove is configured as a keyway, and the protrusion is configured as a key structure component, with the keyway cooperating with the key structure component.

7. A helical pressure regulating device as defined in claim 1, wherein, The retaining ring locks the spiral adjusting rod via a locking assembly.

8. A helical pressure regulating device as claimed in claim 7, wherein, The fixing ring has a through hole that passes through the fixing ring; the syringe body has a second hole that passes through the syringe body; the locking assembly includes a second stop screw; when the second hole is aligned with the through hole, the second stop screw passes through the second hole and the through hole to lock the spiral adjusting rod.

9. A helical pressure regulating device as claimed in claim 8, wherein, The syringe body is further provided with a first hole, which penetrates the syringe body; the locking assembly further includes a first stop screw; the first stop screw penetrates the first hole and presses against the fixing ring, and is used to align the through hole with the second hole.

10. A helical pressure regulating device as defined in claim 1, wherein, The stop head is fixedly connected to the transmission rod by a third stop screw.

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