CN118687447B - A size detection device for valve processing - Google Patents

Abstract

The invention discloses a size detection device for valve processing, and relates to the technical field of valve detection. This size detection device is used in valve processing, through the cooperation of bottom detection frame and top detection frame, place the completion after waiting to detect the work piece, move down through the bottom detection frame and make interior measuring plate insert waiting to detect the work piece tip, then slide outside along with interior measuring plate, outside measuring plate slides to the inboard simultaneously, realizes waiting to detect the internal diameter and the external diameter at work piece both ends and carries out the measurement operation, compare with traditional detecting means, has promoted the detection accuracy and the convenience of equipment.

Description

A size detection device for valve processing

Technical Field

The invention relates to the technical field of valve detection, in particular to a size detection device for valve processing.

Background Art

A valve is a mechanical device that controls the flow rate, flow direction, pressure, temperature, etc. of a flowing fluid medium. A valve is a basic component in a piping system. Technically, valve fittings are the same as pumps and are often discussed as a separate category. Valves are divided into straight-tube and elbow types. Valves can be operated manually or with a handwheel, handle, or pedal, and can also be controlled to change the pressure, temperature, and flow rate of the fluid medium. The port size needs to be detected during valve production. Referring to the Chinese patent application number "202022445309.5", "A standard size detection device for valve processing", this patent solves the problem that the existing detection equipment is inconvenient to operate and has low detection accuracy. However, there are still problems such as poor detection convenience and applicability, as well as the lack of limit stops on the valve during the detection process, which results in position offset during the detection process and affects the detection effect. In this regard, we propose a size detection device for valve processing to solve the above problems.

Summary of the invention

In view of the deficiencies in the prior art, the present invention provides a dimension detection device for valve processing, which solves the problems raised in the above-mentioned background technology.

To achieve the above objectives, the present invention is implemented through the following technical solutions: A size detection device for valve processing, comprising a body, a bottom detection frame is rotatably installed at the lower part of the body, a top detection frame is slidably installed at the upper part of the body, and the outer sides of the bottom detection frame and the top detection frame are fixedly sleeved with a limit plate frame for clamping and limiting the workpiece to be detected;

The inner sides of the bottom detection frame and the top detection frame are both slidably provided with two inner measuring plates for measuring the inner diameter of the workpiece to be detected, and the inner ends of the bottom detection frame and the top detection frame are both slidably provided with outer measuring plates for measuring the outer diameter of the workpiece to be detected;

Limiting grooves are provided on the inner sides of the bottom detection frame and the top detection frame, the inner measuring plate and the outer measuring plate slide inside the limiting grooves, and bellows are installed between the inner measuring plate and the outer measuring plate and the corresponding limiting grooves, and return springs are sleeved on the outer sides of the bellows. Negative pressure modules are fixed inside the bottom detection frame and the top detection frame, and connecting pipes are connected between the negative pressure modules and the multiple bellows.

Preferably, scale plates are fixed to the inner sides of the bottom detection frame and the top detection frame, and marking plates matching the scale plates are fixed to the outer sides of the inner measurement plate and the outer measurement plate.

Preferably, sliders are fixed to the ends of the inner measuring plate and the outer measuring plate, and the sliders slide inside the corresponding limiting grooves.

Preferably, a servo motor is fixed at the lower part of the body, a drive shaft is rotatably installed at the bottom of the bottom detection frame, and the drive shaft is rotatably connected to the inside of the body, and a transmission gear is fixedly sleeved on the outer side of the drive shaft and the output end of the servo motor, and the two transmission gears are meshed with each other.

Preferably, a plurality of limit blocks are slidably installed on the inner side of the limit disk frame, and the plurality of limit blocks are respectively located at the upper and lower ends of the workpiece to be inspected, and are in contact with the two ends of the workpiece to be inspected, so as to clamp the workpiece to be inspected, and shooting modules are fixed inside the plurality of limit blocks, and the installation positions of the plurality of shooting modules respectively correspond to the bottom detection frame and the top detection frame, and a display module and a control module are fixed on the outer side of the body, and the shooting module is electrically connected to the display module and the control module.

Preferably, a plurality of slide grooves are provided inside the limit plate rack, and slide rods are slid inside the slide grooves, the ends of the slide rods are sleeved with mutually meshing positioning bolts, and support springs are fixed between the slide rods and the corresponding slide grooves, and one end of the slide rod away from the positioning bolt is fixedly connected to the corresponding limit block.

Preferably, sliding plates are fixed on both sides of the limiting disc frame located above the body and are slidably connected to the body through the sliding plates. A hydraulic cylinder is fixed on the top inner side of the body, and the piston end of the hydraulic cylinder is fixedly connected to the top detection frame.

Preferably, anti-slip sheets are fixedly mounted on the inner sides of the two inner measuring plates located below the inner side of the machine body.

The present invention provides a size detection device for valve processing. Compared with the prior art, it has the following beneficial effects:

(1) The dimension detection device for valve processing cooperates with the bottom detection frame and the top detection frame. When the workpiece to be detected is placed, the bottom detection frame is moved downward to allow the inner measuring plate to be inserted into the end of the workpiece to be detected. Then, as the inner measuring plate slides outward, the outer measuring plate slides inward at the same time, thereby realizing the measurement of the inner diameter and outer diameter of the two ends of the workpiece to be detected. Compared with the traditional detection method, the detection accuracy and convenience of the equipment are improved.

(2) The size detection device for valve processing, through the cooperation of the limit disk rack, after the workpiece to be detected is placed, the upper limit disk rack is moved down to complete the limit of the workpiece to be detected, so as to avoid the phenomenon of displacement and the like in the subsequent detection process of the workpiece to be detected, which affects the detection effect.

(3) The dimension detection device for valve processing can facilitate the clamping and detection of different types of workpieces to be detected through the anti-slip sheet installed on the inner side of the inner measuring plate. At the same time, the operation of the servo motor can drive the bottom detection frame and the clamped workpiece to be detected to rotate, thereby realizing the detection operation of the end ring wall of the workpiece to be detected, thereby improving the detection effect of the equipment.

BRIEF DESCRIPTION OF THE DRAWINGS

Fig. 1 is a schematic diagram of the overall structure of the present invention;

FIG2 is a schematic cross-sectional view of the structure of FIG1 of the present invention;

FIG3 is a schematic diagram of the enlarged structure of point A in FIG2 of the present invention;

FIG4 is a front view of FIG2 of the present invention;

FIG5 is a schematic diagram of the enlarged structure of point B in FIG4 of the present invention;

6 is a schematic cross-sectional view of the top detection frame and the limit plate frame of the present invention;

FIG7 is a schematic diagram of the enlarged structure of point C in FIG6 of the present invention;

FIG8 is a schematic diagram of the structure of the bottom detection frame and the limit plate frame of the present invention;

FIG. 9 is a schematic diagram of the present invention and the limiting disk rack structure.

In the figure: 1. body; 101. display module; 2. control module; 3. hydraulic cylinder; 4. workpiece to be detected; 5. bottom detection frame; 6. top detection frame; 7. limit plate frame; 701. slide groove; 702. slide bar; 703. positioning bolt; 704. support spring; 705. sliding plate; 8. limit block; 801. shooting module; 9. outer measuring plate; 901. marking plate; 902. slider; 10. inner measuring plate; 1001. anti-slip sheet; 11. driving shaft; 12. servo motor; 13. transmission gear; 14. negative pressure module; 1401. connecting pipe; 15. scale plate; 16. limit groove; 17. bellows expansion tube; 18. reset spring.

DETAILED DESCRIPTION

The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions 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 are within the scope of protection of the present invention.

Please refer to Figures 1 to 9. The present invention provides two technical solutions, specifically including the following embodiments:

Embodiment 1:

In the embodiment of the present invention, referring to FIG. 1 and FIG. 2, a size detection device for valve processing includes a body 1, a bottom detection frame 5 is rotatably installed at the lower part of the body 1, a top detection frame 6 is slidably installed at the upper part of the body 1, and the outer sides of the bottom detection frame 5 and the top detection frame 6 are fixedly sleeved with a limit disc frame 7 for clamping and limiting the workpiece 4 to be detected. The above-mentioned workpiece 4 to be detected is a straight-cylinder valve body. When the workpiece 4 to be detected is placed in the body 1, the top detection frame 6 moves downward to drive the corresponding limit disc frame 7 to move downward, and the workpiece 4 to be detected is clamped and limited by two limit disc frames 7;

In the embodiment of the present invention, specifically, referring to Figures 6 to 8, two inner measuring plates 10 are slidably mounted on the inner sides of the bottom detection frame 5 and the top detection frame 6 for measuring the inner diameter of the workpiece 4 to be detected, and outer measuring plates 9 are slidably mounted on the inner ends of the bottom detection frame 5 and the top detection frame 6 for measuring the outer diameter of the workpiece 4 to be detected. When the workpiece 4 to be detected is placed in the limit plate rack 7 at the lower part of the body 1, and then the top detection frame 6 is moved downward, so that the two limit plate racks 7 complete the clamping and limiting of the workpiece 4 to be detected, at this time, the inner measuring plates 10 on the inner sides of the bottom detection frame 5 and the top detection frame 6 can be respectively inserted into the ends of the workpiece 4 to be detected. When measuring, the two inner measuring plates 10 slide outward and then respectively fit with the two sides of the inner wall of the workpiece 4 to be detected, and the inner diameter of the workpiece 4 to be detected can be obtained by the distance between the two inner measuring plates 10. When measuring, the two outer measuring plates 9 slide inward until they fit with the outer wall of the workpiece 4 to be detected, and the pipe wall thickness of the workpiece 4 to be detected can be obtained by the distance between the outer measuring plates 9 and the inner measuring plates 10.

In the embodiment of the present invention, specifically, referring to Figures 6 and 7, the inner sides of the bottom detection frame 5 and the top detection frame 6 are both provided with limit grooves 16, the inner measuring plate 10 and the outer measuring plate 9 are both slid inside the limit grooves 16, and a bellows telescopic tube 17 is installed between the inner measuring plate 10 and the outer measuring plate 9 and the corresponding limit grooves 16, and the outer side of the bellows telescopic tube 17 is sleeved with a return spring 18, and the bottom detection frame 5 and the top detection frame 6 are both fixed with a negative pressure module 14, and the negative pressure module 14 and the plurality of bellows telescopic tubes 17 are connected to each other. 7 are connected with a connecting pipe 1401, the negative pressure module 14 is an existing negative pressure device, which can drive the bellows expansion and contraction of the bellows 17 through the operation of exhausting and inflating. During the inflation process, the bellows expansion and contraction can be compressed and stretched, thereby driving the corresponding inner measuring plate 10 and outer measuring plate 9 to fit the inner wall and outer wall of the workpiece 4 to be detected, respectively, to achieve the measurement operation. During the process of exhausting, the bellows expansion and contraction tube 17 can retract and drive the corresponding inner measuring plate 10 and outer measuring plate 9 to reset and complete the measurement operation;

In the embodiment of the present invention, further, referring to FIG7 , a scale plate 15 is fixed to the inner side of the bottom detection frame 5 and the top detection frame 6, and a marking plate 901 adapted to the scale plate 15 is fixed to the outer side of the inner measuring plate 10 and the outer measuring plate 9. When the inner measuring plate 10 and the outer measuring plate 9 slide, they can drive the corresponding marking plate 901 to translate along the scale plate 15, so as to facilitate observation and recording;

In the embodiment of the present invention, specifically, referring to FIG. 7 , the ends of the inner measuring plate 10 and the outer measuring plate 9 are fixed with sliders 902 , and the sliders 902 slide inside the corresponding limit grooves 16 , so that the inner measuring plate 10 and the outer measuring plate 9 always remain perpendicular to the bottom detection frame 5 and the top detection frame 6 ;

In the embodiment of the present invention, specifically, referring to Figures 8 and 9, a plurality of limit blocks 8 are slidably installed on the inner side of the limit disk rack 7, and the plurality of limit blocks 8 are respectively located at the upper and lower ends of the workpiece 4 to be detected, and fit together with the two ends of the workpiece 4 to be detected, and are used to clamp the workpiece 4 to be detected. When the workpiece 4 to be detected is placed, it is kept coaxial with the limit disk rack 7 below, and the limit block 8 is driven downward by the upper limit disk rack 7 to achieve the clamping of the workpiece 4 to be detected. The interior of the plurality of limit blocks 8 is fixed with a shooting module 801, and the installation positions of the plurality of shooting modules 801 are divided into The camera module 801 is an existing mechanism that can shoot and transmit images. The display module 101 and the control module 2 are fixed on the outside of the body 1. The display module 101 is an LED display screen. The control module 2 is based on an existing PLC controller. The camera module 801 is electrically connected to the display module 101 and the control module 2. During the measurement process, the measurement screen can be transmitted to the display module 101 through the camera module 801, which is convenient for recording and determining whether the workpiece 4 to be inspected is qualified.

In the embodiment of the present invention, specifically, referring to Figures 2, 3, and 9, a plurality of slide grooves 701 are provided inside the limit plate rack 7, and slide rods 702 are slid inside the slide grooves 701, and mutually meshing positioning bolts 703 are sleeved at the ends of the slide rods 702, and support springs 704 are fixed between the slide rods 702 and the corresponding slide grooves 701, and one end of the slide rod 702 away from the positioning bolt 703 is fixedly connected to the corresponding limit block 8. When inspecting workpieces 4 to be inspected of different sizes, the position of the slide rod 702 can be adjusted by loosening the positioning bolt 703, so that the position adjustment of the plurality of limit blocks 8 can be completed, so that the limit blocks 8 can be suitable for clamping workpieces 4 to be inspected of different sizes;

In the embodiment of the present invention, specifically, referring to FIG. 2 and FIG. 3 , sliding plates 705 are fixed on both sides of the limit plate frame 7 located above the machine body 1, and the limit plate frame 7 is slidably connected to the machine body 1 through the sliding plates 705. A hydraulic cylinder 3 is fixed on the top of the inner side of the machine body 1, and the piston end of the hydraulic cylinder 3 is fixedly connected to the top detection frame 6. The hydraulic cylinder 3 is used to drive the top detection frame 6 and the limit plate frame 7 above to slide up and down;

In the embodiment of the present invention, further, referring to FIG8 , the inner sides of the two inner measuring plates 10 located at the lower inner side of the body 1 are fixedly installed with anti-slip sheets 1001, and the anti-slip sheets 1001 are used to clamp different types of workpieces 4 to be detected. For example, the workpiece 4 to be detected in the shape of a curved pipe is first moved outward through the inner measuring plate 10 when placed, and then the workpiece 4 to be detected is placed above the bottom detection frame 5, and the end to be detected is kept parallel to the top detection frame 6 above, and then the inner measuring plate 10 is slid inward, and the workpiece 4 to be detected is clamped by the anti-slip sheet 1001, and the end of the workpiece 4 to be detected can be detected;

In the embodiment of the present invention, further, referring to Figures 4 and 5, a servo motor 12 is fixed at the lower part of the body 1, a driving shaft 11 is rotatably installed at the bottom of the bottom detection frame 5, and the driving shaft 11 is rotatably connected to the inside of the body 1, and a transmission gear 13 is fixedly sleeved on the outer side of the driving shaft 11 and the output end of the servo motor 12, and the two transmission gears 13 are meshed with each other. When the workpiece 4 to be detected is clamped by the anti-slip sheet 1001 and then tested, the servo motor 12 can be used to drive the transmission gear 13 and the driving shaft 11 to run, so that the bottom detection frame 5 runs with the driving shaft 11, thereby driving the clamped workpiece 4 to be detected to rotate, so that the end ring wall thickness of the workpiece 4 to be detected can be detected through the cooperation of the inner measuring plate 10 and the outer measuring plate 9, thereby improving the detection accuracy;

In the embodiment of the present invention, specifically, when the workpiece 4 to be inspected is clamped and inspected, when the upper limit plate frame 7 moves downward, a gap is left between the limit block 8 and the workpiece 4 to be inspected, and the inner measuring plate 10 only needs to be inserted into the end of the workpiece 4 to be inspected, so that the workpiece 4 to be inspected can rotate with the bottom inspection frame 5;

Embodiment 2:

Based on the first embodiment, in the embodiment of the present invention, referring to FIG. 1 and FIG. 2, a size detection device for valve processing includes a body 1, a bottom detection frame 5 is rotatably installed at the lower part of the body 1, and a top detection frame 6 is slidably installed at the upper part of the body 1. The outer sides of the bottom detection frame 5 and the top detection frame 6 are fixedly sleeved with a limit disc frame 7 for clamping and limiting the workpiece 4 to be detected. The above-mentioned workpiece 4 to be detected is a straight-cylinder valve body. When the workpiece 4 to be detected is placed in the body 1, the top detection frame 6 moves downward to drive the corresponding limit disc frame 7 to move downward, and the workpiece 4 to be detected is clamped and limited by two limit disc frames 7;

In the embodiment of the present invention, specifically, referring to Figures 6 to 8, two inner measuring plates 10 are slidably mounted on the inner sides of the bottom detection frame 5 and the top detection frame 6 for measuring the inner diameter of the workpiece 4 to be detected, and outer measuring plates 9 are slidably mounted on the inner ends of the bottom detection frame 5 and the top detection frame 6 for measuring the outer diameter of the workpiece 4 to be detected. When the workpiece 4 to be detected is placed in the limit plate rack 7 at the lower part of the body 1, and then the top detection frame 6 is moved downward, so that the two limit plate racks 7 complete the clamping and limiting of the workpiece 4 to be detected, at this time, the inner measuring plates 10 on the inner sides of the bottom detection frame 5 and the top detection frame 6 can be respectively inserted into the ends of the workpiece 4 to be detected. When measuring, the two inner measuring plates 10 slide outward and then respectively fit with the two sides of the inner wall of the workpiece 4 to be detected, and the inner diameter of the workpiece 4 to be detected can be obtained by the distance between the two inner measuring plates 10. When measuring, the two outer measuring plates 9 slide inward until they fit with the outer wall of the workpiece 4 to be detected, and the pipe wall thickness of the workpiece 4 to be detected can be obtained by the distance between the outer measuring plates 9 and the inner measuring plates 10.

In the embodiment of the present invention, specifically, referring to Figures 6 and 7, the inner sides of the bottom detection frame 5 and the top detection frame 6 are both provided with limit grooves 16, the inner measuring plate 10 and the outer measuring plate 9 are both slid inside the limit grooves 16, and a bellows telescopic tube 17 is installed between the inner measuring plate 10 and the outer measuring plate 9 and the corresponding limit grooves 16, and the outer side of the bellows telescopic tube 17 is sleeved with a return spring 18, and the bottom detection frame 5 and the top detection frame 6 are both fixed with a negative pressure module 14, and the negative pressure module 14 and the plurality of bellows telescopic tubes 17 are connected to each other. 7 are connected with a connecting pipe 1401, the negative pressure module 14 is an existing negative pressure device, which can drive the bellows expansion and contraction of the bellows 17 through the operation of exhausting and inflating. During the inflation process, the bellows expansion and contraction can be compressed and stretched, thereby driving the corresponding inner measuring plate 10 and outer measuring plate 9 to fit the inner wall and outer wall of the workpiece 4 to be detected, respectively, to achieve the measurement operation. During the process of exhausting, the bellows expansion and contraction tube 17 can retract and drive the corresponding inner measuring plate 10 and outer measuring plate 9 to reset and complete the measurement operation;

In the embodiment of the present invention, further, referring to FIG7 , a scale plate 15 is fixed to the inner side of the bottom detection frame 5 and the top detection frame 6, and a marking plate 901 adapted to the scale plate 15 is fixed to the outer side of the inner measuring plate 10 and the outer measuring plate 9. When the inner measuring plate 10 and the outer measuring plate 9 slide, they can drive the corresponding marking plate 901 to translate along the scale plate 15, so as to facilitate observation and recording;

In the embodiment of the present invention, specifically, referring to FIG. 7 , the ends of the inner measuring plate 10 and the outer measuring plate 9 are fixed with sliders 902 , and the sliders 902 slide inside the corresponding limit grooves 16 , so that the inner measuring plate 10 and the outer measuring plate 9 always remain perpendicular to the bottom detection frame 5 and the top detection frame 6 ;

In the embodiment of the present invention, specifically, referring to Figures 8 and 9, a plurality of limit blocks 8 are slidably installed on the inner side of the limit disk rack 7, and the plurality of limit blocks 8 are respectively located at the upper and lower ends of the workpiece 4 to be detected, and fit together with the two ends of the workpiece 4 to be detected, and are used to clamp the workpiece 4 to be detected. When the workpiece 4 to be detected is placed, it is kept coaxial with the limit disk rack 7 below, and the limit block 8 is driven downward by the upper limit disk rack 7 to achieve the clamping of the workpiece 4 to be detected. The interior of the plurality of limit blocks 8 is fixed with a shooting module 801, and the installation positions of the plurality of shooting modules 801 are divided into The camera module 801 is an existing mechanism that can shoot and transmit images. The display module 101 and the control module 2 are fixed on the outside of the body 1. The display module 101 is an LED display screen. The control module 2 is based on an existing PLC controller. The camera module 801 is electrically connected to the display module 101 and the control module 2. During the measurement process, the measurement screen can be transmitted to the display module 101 through the camera module 801, which is convenient for recording and determining whether the workpiece 4 to be inspected is qualified.

In the embodiment of the present invention, specifically, referring to Figures 2, 3, and 9, a plurality of slide grooves 701 are provided inside the limit plate rack 7, and slide rods 702 are slid inside the slide grooves 701, and mutually meshing positioning bolts 703 are sleeved at the ends of the slide rods 702, and support springs 704 are fixed between the slide rods 702 and the corresponding slide grooves 701, and one end of the slide rod 702 away from the positioning bolt 703 is fixedly connected to the corresponding limit block 8. When inspecting workpieces 4 to be inspected of different sizes, the position of the slide rod 702 can be adjusted by loosening the positioning bolt 703, so that the position adjustment of the plurality of limit blocks 8 can be completed, so that the limit blocks 8 can be suitable for clamping workpieces 4 to be inspected of different sizes;

In the embodiment of the present invention, specifically, referring to Figures 2 and 3, sliding plates 705 are fixed on both sides of the limit disk rack 7 located above the body 1, and are slidably connected to the body 1 through the sliding plates 705. A hydraulic cylinder 3 is fixed on the top of the inner side of the body 1, and the piston end of the hydraulic cylinder 3 is fixedly connected to the top detection frame 6. The hydraulic cylinder 3 is used to drive the top detection frame 6 and the upper limit disk rack 7 to slide up and down, and perform limit and detection operations on the workpiece 4 to be detected. The above workpiece 4 to be detected is detected against the straight cylinder valve body.

Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.

The above is a detailed description of an embodiment of the present invention, but the content is only a preferred embodiment of the present invention and cannot be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent coverage of the present invention.

Claims (8)

1. A size detection device for valve processing, comprising a body (1), characterized in that: a bottom detection frame (5) is rotatably mounted at the lower part of the body (1), a top detection frame (6) is slidably mounted at the upper part of the body (1), and the outer sides of the bottom detection frame (5) and the top detection frame (6) are fixedly sleeved with a limit plate frame (7) for clamping and limiting the workpiece (4) to be detected; The inner sides of the bottom detection frame (5) and the top detection frame (6) are both slidably provided with two inner measuring plates (10) for measuring the inner diameter of the workpiece (4) to be detected, and the inner ends of the bottom detection frame (5) and the top detection frame (6) are both slidably provided with outer measuring plates (9) for measuring the outer diameter of the workpiece (4) to be detected; The bottom detection frame (5) and the top detection frame (6) are both provided with limit grooves (16) on their inner sides, the inner measuring plate (10) and the outer measuring plate (9) are both slid inside the limit grooves (16), and bellows telescopic tubes (17) are installed between the inner measuring plate (10) and the outer measuring plate (9) and the corresponding limit grooves (16), and the outer sides of the bellows telescopic tubes (17) are sleeved with return springs (18), and negative pressure modules (14) are fixed inside the bottom detection frame (5) and the top detection frame (6), and connecting tubes (1401) are connected between the negative pressure modules (14) and the plurality of bellows telescopic tubes (17). 2. A size detection device for valve processing according to claim 1, characterized in that: a scale plate (15) is fixed on the inner side of the bottom detection frame (5) and the top detection frame (6), and a marking plate (901) adapted to the scale plate (15) is fixed on the outer side of the inner measuring plate (10) and the outer measuring plate (9). 3. A dimension detection device for valve processing according to claim 1, characterized in that: sliders (902) are fixed to the ends of the inner measuring plate (10) and the outer measuring plate (9), and the sliders (902) slide inside the corresponding limiting grooves (16). 4. A dimension detection device for valve processing according to claim 1, characterized in that: a servo motor (12) is fixed at the lower part of the body (1), a drive shaft (11) is rotatably installed at the bottom of the bottom detection frame (5), and the drive shaft (11) is rotatably connected to the inside of the body (1), and a transmission gear (13) is fixedly sleeved on the outer side of the drive shaft (11) and the output end of the servo motor (12), and the two transmission gears (13) are meshed with each other. 5. A size detection device for valve processing according to claim 1, characterized in that: a plurality of limit blocks (8) are slidably installed on the inner side of the limit disk frame (7), and the plurality of limit blocks (8) are respectively located at the upper and lower ends of the workpiece (4) to be detected, and are mutually fitted with the two ends of the workpiece (4) to be detected, and are used to clamp the workpiece (4) to be detected, and a shooting module (801) is fixed inside the plurality of limit blocks (8), and the installation positions of the plurality of shooting modules (801) are respectively kept corresponding to the bottom detection frame (5) and the top detection frame (6), and a display module (101) and a control module (2) are fixed on the outer side of the body (1), and the shooting module (801) is electrically connected to the display module (101) and the control module (2). 6. A dimension detection device for valve processing according to claim 5, characterized in that: a plurality of slide grooves (701) are opened inside the limit disk frame (7), and a slide rod (702) is slid inside the slide groove (701), and the ends of the slide rods (702) are sleeved with mutually meshing positioning bolts (703), and a support spring (704) is fixed between the slide rods (702) and the corresponding slide grooves (701), and the end of the slide rod (702) away from the positioning bolt (703) is fixedly connected to the corresponding limit block (8). 7. A size detection device for valve processing according to claim 5, characterized in that: sliding plates (705) are fixed on both sides of the limit disk frame (7) located above the body (1), and are slidably connected to the body (1) through the sliding plates (705); a hydraulic cylinder (3) is fixed to the top of the inner side of the body (1), and the piston end of the hydraulic cylinder (3) is fixedly connected to the top detection frame (6). 8. A dimension detection device for valve processing according to claim 1, characterized in that anti-slip sheets (1001) are fixedly installed on the inner sides of the two inner measuring plates (10) located at the lower inner side of the body (1).