Follow-up servo position correction valve

Abstract

The utility model relates to a follow-up servo position correction valve which comprises a valve core and a valve body which are tightly attached up and down, the valve core and the valve body are located in a cover body, the upper portion of a valve rod is fixedly connected in the valve core, and the middle of the valve rod rotates in the valve body. A cover body cavity is formed in the cover body, a pressure source port is formed in the top of the cover body, a first cover body gas port and a second cover body gas port are formed in the side part of the cover body, and the pressure source port, the first cover body gas port and the second cover body gas port are communicated with the cover body cavity; an upper valve rod hole is formed in the valve element, and the upper portion of the valve rod is located in the upper valve rod hole. A first valve element hole, a second valve element hole and a third valve element hole are formed in the periphery of the valve rod hole, and the first valve element hole and the third valve element hole vertically penetrate through each other. The device is simple in structure and small in occupied space; the positioning precision is improved, leakage is reduced, the service life of the valve is prolonged, the technical difficulty is solved, the cost is reduced, and the position detection and feedback functions of a target machine are better achieved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to pneumatic valve technical field relates to the servo position correction valve of following. BACKGROUND

[0002] In the neighborhood of the position following of mechanical device, the required position can be positioned automatically according to the requirement. For example, the position of the filter cloth, fruit production line and sludge treatment machine belt conveying deviation prevention is automatically corrected. The existing mechanical equipment has the problems of complex structure, difficult processing and poor positioning accuracy. SUMMARY

[0003] The utility model discloses a servo position correction valve of following can solve the above -mentioned problem, and cost reduction.

[0004] According to the technical scheme provided by the utility model: a servo position correction valve of following, including the valve core and valve body of close adhesion, valve core, valve body is located in the cover body, the upper part of valve core is fixedly connected in valve rod, the middle part of valve rod rotates in valve body;Cover body is equipped with cover body cavity, and the top of cover body is opened pressure source mouth, and the side of cover body is opened first cover body gas mouth and second cover body gas mouth, and pressure source mouth, first cover body gas mouth, second cover body gas mouth communicate cover body cavity;Valve core is equipped with upper valve rod hole, and the upper part of valve rod is located in upper valve rod hole;Valve rod hole is equipped with valve core first hole, valve core second hole, valve core third hole, and valve core first hole, valve core third hole is vertically penetrated, and valve core second hole is L type, and the upper end of valve core second hole is located in the inner wall of upper valve rod hole, and the upper end of valve core first hole, valve core third hole is located in the upper end surface of valve core, and the lower end of valve core first hole, valve core second hole, valve core third hole is located in the lower end surface of valve core;Valve rod is equipped with exhaust hole, and exhaust hole is bent, and the upper end of exhaust hole is communicated with the upper end of valve core second hole, and the lower end of exhaust hole is located in the middle part of valve rod and is communicated with the atmosphere;Valve body is equipped with first valve body hole, second valve body hole, and first valve body hole, second valve body hole is L type, and the upper end of first valve body hole, second valve body hole is located in the upper end surface of valve body, and the lower end of first valve body hole, second valve body hole is located in the side.

[0005] As a further improvement of the utility model, the cover body adopts a split structure composed of an upper cover and a lower cover.

[0006] As a further improvement of the utility model, the upper cover is equipped with an upper cover cavity, and the lower cover is equipped with a lower cover cavity.

[0007] As a further improvement of the utility model, the pressure source mouth is located at the top of the upper cover and communicates with the upper cover cavity, and the first cover body gas mouth and the second cover body gas mouth are located at the lower cover and communicate with the lower cover cavity.

[0008] As a further improvement of the utility model, the upper cover cavity and the lower cover cavity form the cover body cavity.

[0009] As a further improvement of the present application, the valve core hole is radially installed with a supporting bolt.

[0010] As a further improvement of the present application, the valve body and the lower cover are provided with an avoiding groove.

[0011] As a further improvement of the present application, the first valve body hole lower end port and the second cover gas port are located at the same height, and the second valve body hole lower end port and the first cover gas port are located at the same height.

[0012] As a further improvement of the present application, a sealing element is installed between the valve core and the valve stem of the valve body.

[0013] As a further improvement of the present application, the valve stem extends out of the cover.

[0014] The positive progress effect of the present application is that:

[0015] The present application has the advantages of simple structure, small space occupation, improved positioning accuracy, reduced leakage, prolonged service life of the valve, solved process difficulties, reduced cost, better realized position detection and feedback function of the target machine. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a sectional view of the present application.

[0017] Figure 2 It is a front view of the present application.

[0018] Figure 3 It is a top view of the valve body of the present application.

[0019] Figure 4 It is Figure 3 A-A sectional view in the present application.

[0020] Figure 5 It is Figure 3 B-B sectional view in the present application.

[0021] Figure 6 It is a bottom view of the valve core of the present application.

[0022] Figure 7 It is a sectional view of the valve core of the present application. DETAILED DESCRIPTION

[0023] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict. The present application will be described in detail below with reference to the accompanying drawings and embodiments.

[0024] In order for those skilled in the art to better understand the technical scheme of the present application, the technical scheme in the embodiments of the present application will be described clearly and completely 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 the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative labor should belong to the scope of protection of the present application.

[0025] It should be noted that the terms "first", "second" and the like in the description and claims of the present application and the above drawings are used to distinguish similar objects, and do not necessarily have to describe a specific order or sequence. It should be understood that the data thus used can be interchanged under appropriate circumstances, so that the embodiments of the present application described herein can be implemented. In addition, the terms "include" and "have" and the like mean that in addition to those listed in "include" and "have", other contents not listed can also be "included" and "have"; for example, a process, method, system, product or device that can include a series of steps or units does not have to be limited to those steps or units that have been clearly listed, but can include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0026] Due to the angle of the drawing, some parts may not be drawn, but their positions and connection relationships can be understood according to the textual expression part.

[0027] As shown in Figures 1-2 The present application is a servo position correction valve, which comprises a valve core 1 and a valve body 2 in close contact, the valve core 1 and the valve body 2 are located in a cover body, the upper part of a valve rod 3 is fixedly connected in the valve core 1, and the middle part of the valve rod 3 rotates in the valve body 2.

[0028] The cover body is provided with a cover body cavity, the top of the cover body is provided with a pressure source port 4-1, the side of the cover body is provided with a first cover body gas port 5-1 and a second cover body gas port 5-2, and the pressure source port 4-1, the first cover body gas port 5-1 and the second cover body gas port 5-2 communicate with the cover body cavity.

[0029] The cover body adopts a split structure and is composed of an upper cover 4 and a lower cover 5. The lower part of the upper cover 4 is provided with an upper cover cavity, the lower cover 5 is provided with a lower cover cavity, the pressure source port 4-1 is located at the top of the upper cover 4 and communicates with the upper cover cavity, the first cover body gas port 5-1 and the second cover body gas port 5-2 are located in the lower cover 5 and communicate with the lower cover cavity, and the upper cover cavity and the lower cover cavity form the cover body cavity.

[0030] The valve core 1 is provided with an upper valve rod hole, and the upper part of the valve rod 3 is located in the upper valve rod hole. As shown in Figures 6-7As shown, the valve stem hole outer periphery is provided with the valve core first hole 1-1, the valve core second hole 1-2 and the valve core third hole 1-3, the valve core first hole 1-1 and the valve core third hole 1-3 are vertically penetrated, the valve core second hole 1-2 is L-shaped, the upper port of the valve core second hole 1-2 is located in the upper valve stem hole inner wall, the upper ports of the valve core first hole 1-1 and the valve core third hole 1-3 are located in the upper end surface of the valve core 1, and the lower ports of the valve core first hole 1-1, the valve core second hole 1-2 and the valve core third hole 1-3 are located in the lower end surface of the valve core 1.

[0031] The radial installation bolt in the valve core hole fixes the valve core 1 and the valve stem 3.

[0032] The valve stem 3 is provided with the exhaust hole 3-1, the exhaust hole 3-1 is bent, the upper port of the exhaust hole 3-1 is communicated with the upper port of the valve core second hole 1-2, and the lower port of the exhaust hole 3-1 is located in the middle part of the valve stem 3; the valve body 2 and the lower cover 5 are provided with the avoiding groove, so that the lower port of the exhaust hole 3-1 is communicated with the atmosphere.

[0033] As shown in the figure, Figures 3-5 The valve body 2 is provided with the first valve body hole 2-1 and the second valve body hole 2-2, the first valve body hole 2-1 and the second valve body hole 2-2 are L-shaped, the upper ports of the first valve body hole 2-1 and the second valve body hole 2-2 are located in the upper end surface of the valve body 2, and the lower ports of the first valve body hole 2-1 and the second valve body hole 2-2 are located in the side surface.

[0034] The lower port of the first valve body hole 2-1 is located at the same height as the second cover body gas port 5-2, and the lower port of the second valve body hole 2-2 is located at the same height as the first cover body gas port 5-1.

[0035] In order to reduce leakage, a sealing element is arranged between the valve core 1 and the valve stem 3 of the valve body 2.

[0036] The valve stem 3 adopts a short hole structure, thereby reducing the process difficulty.

[0037] The lower part of the valve stem 3 extends out of the cover body.

[0038] The working process of the utility model is as follows:

[0039] As shown in the figure, Figure 1 In the correct position state, compressed air enters the cover body cavity from the pressure source port 4-1, the valve core 1 tightly abuts against the valve body 2 under the gas pressure, at this time, the valve core second hole 1-2 of the valve core 1 is located between the first valve body hole 2-1 and the second valve body hole 2-2 of the valve body 2. At this time, the exhaust hole 3-1 has no exhaust, and the position is in a balanced state.

[0040] When the workpiece position deviates, the detection rod (user installation) connected to the valve rod 3 produces a micro-rotation to drive the valve rod 3 to rotate, so that the position of the valve core 1 and the air inlet and outlet on the valve body 2 changes, and the flow direction changes. When rotating counterclockwise, the first hole 1-1 of the valve core is connected with the second valve body hole 2-2 and the first cover body air port 5-1, so that the first cover body air port 5-1 realizes air inlet. The first valve body hole 2-1, the second hole 1-2 of the valve core, the second cover body air port 5-2 and the exhaust hole 3-1 are communicated, so that the second cover body air port 5-2 realizes air outlet. When rotating clockwise, the third hole 1-3 of the valve core, the first valve body hole 2-1 and the second cover body air port 5-2 are communicated, so that the second cover body air port 5-2 realizes air inlet. The second valve body hole 2-2, the second hole 1-2 of the valve core, the first cover body air port 5-1 and the exhaust hole 3-1 are communicated, so that the first cover body air port 5-1 realizes air outlet. Thus, the switching of different flow channels of compressed air is realized, the external actuator is driven to move reversely to follow the change of the workpiece position, so that the position is corrected.

[0041] It can be understood that the above embodiments are only exemplary embodiments for illustrating the principles of the utility model, and the utility model is not limited thereto. For those skilled in the art, various modifications and improvements can be made without departing from the spirit and essence of the utility model, and these modifications and improvements are also regarded as the protection scope of the utility model.

Claims

1. A follow-up servo position correction valve characterized by, The utility model discloses a valve core (1) and valve body (2) are close to the upper and lower, and the valve core (1) and valve body (2) are located in the cover body, and the upper portion of valve stem (3) is fixedly connected in the valve core (1), and the middle part of valve stem (3) rotates in the valve body (2);Cover body is equipped with cover body cavity, and the top of cover body is opened pressure source mouth (4-1), and the side of cover body is opened first cover body air port (5-1) and second cover body air port (5-2), and pressure source mouth (4-1), first cover body air port (5-1), second cover body air port (5-2) communicate cover body cavity;Valve core (1) is equipped with upper valve stem hole, and the upper portion of valve stem (3) is located in upper valve stem hole;The outer periphery of upper valve stem hole is equipped with valve core first hole (1-1), valve core second hole (1-2), valve core third hole (1-3), and valve core first hole (1-1), valve core third hole (1-3) are vertically penetrated, and valve core second hole (1-2) is L-shaped, and the upper end port of valve core second hole (1-2) is located in the inner wall of upper valve stem hole, and the upper end port of valve core first hole (1-1), valve core third hole (1-3) is located in the upper end surface of valve core (1), and the lower end port of valve core first hole (1-1), valve core second hole (1-2), valve core third hole (1-3) is located in the lower end surface of valve core (1);Valve stem (3) is equipped with exhaust hole (3-1), and exhaust hole (3-1) is bent, and the upper end port of exhaust hole (3-1) communicates the upper end port of valve core second hole (1-2), and the lower end port of exhaust hole (3-1) is located in the middle part of valve stem (3) and communicates atmosphere;Valve body (2) is equipped with first valve body hole (2-1), second valve body hole (2-2), and first valve body hole (2-1), second valve body hole (2-2) are L-shaped, and the upper end port of first valve body hole (2-1), second valve body hole (2-2) is located in the upper end surface of valve body (2), and the lower end port of first valve body hole (2-1), second valve body hole (2-2) is located in the side.

2. The follow-up servo position correction valve of claim 1, wherein The cover body adopts split structure and is composed of an upper cover (4) and a lower cover (5).

3. The follow-up servo position corrector valve of claim 2 wherein, The upper cover (4) is provided with an upper cover cavity, and the lower cover (5) is provided with a lower cover cavity.

4. The follow-up servo position corrector valve of claim 3 wherein, The pressure source mouth (4-1) is located at the top of the upper cover (4) and communicates with the upper cover cavity, and the first cover body air port (5-1) and the second cover body air port (5-2) are located in the lower cover (5) and communicate with the lower cover cavity.

5. The follow-up servo position corrector valve of claim 3 wherein, The upper cover cavity and the lower cover cavity form the cover body cavity.

6. The follow-up servo position corrector valve of claim 1 wherein, Radial mounting bolts are arranged in the valve core hole.

7. The follow-up servo position corrector valve of claim 1 wherein, The valve body (2) and the lower cover (5) are provided with avoiding grooves.

8. The follow-up servo position corrector valve of claim 1 wherein, The lower end port of the first valve body hole (2-1) is located at the same height as the second cover body air port (5-2), and the lower end port of the second valve body hole (2-2) is located at the same height as the first cover body air port (5-1).

9. The follow-up servo position corrector valve of claim 1 wherein, Sealing elements are arranged between the valve core (1) and the valve stem (3) of the valve body (2).

10. The follow-up servo position corrector valve of claim 1 wherein, The lower part of the valve stem (3) extends out of the cover body.

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