Pneumatic spray valve

Abstract

The present application belongs to the technical field of spray valves, and particularly relates to a pneumatic spray valve, which comprises a valve body and a main shaft, the valve body comprises an upper valve body and a lower valve body, the upper valve body is detachably connected with the lower valve body, the upper valve body is provided with a valve cavity, one side of the valve cavity is provided with a liquid inlet for conductive connection with a liquid supply pipeline, the main shaft is slidably installed in the valve body, the main shaft is hollow and the inner wall of the main shaft is provided with a liquid guide hole, one end of the main shaft is provided with a reciprocating structure, and the other end of the main shaft is provided with a spray head, the reciprocating structure presses down the main shaft to make the liquid guide hole enter the valve cavity and be in conductive connection with the liquid inlet, and the spray head extends out of the valve body, a first sealing structure is arranged between the upper connecting disc and the main shaft, and a second sealing structure is arranged between the lower connecting disc and the main shaft, the advantage of the present application lies in that the lifting and rotating structures are designed in a separation mode, the overpressure of the main shaft is avoided, the working pressure of the sealing elements at the upper and lower parts of the main shaft is reduced, the service life of the equipment is prolonged, and the failure rate is reduced.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of spray valves, and particularly relates to a pneumatic spray valve. BACKGROUND

[0002] The general understanding of a reaction kettle is a container for physical or chemical reactions, and through structural design and parameter configuration of the container, functions such as heating, evaporation, cooling and low-speed mixing required by a process are achieved. When viscous products are produced, residues will be left on the inner side wall, bottom and stirring device of the reaction kettle, which will affect the quality of the next batch of products, especially when the reaction kettle is used to produce different products in succession. In order to ensure the stability of product quality, the reaction kettle needs to be cleaned after each batch of products is completed.

[0003] Therefore, the cleaning of the reaction kettle is a key technology that affects the quality of products. In the traditional technology, alkali immersion or high-pressure water spraying is usually used to clean the reaction kettle. In the existing spray valve, a lead screw structure is used. When the liquid spraying work is performed, the lead screw is rotated by a motor, the lead screw is rotated to the bottom, the spray head is extended out of the cavity to perform rotary liquid spraying. At this time, the lead screw is always in the process of downward rotation, which is easy to cause wear of the sealing element and damage to the cleaning shaft body due to over-rotation of the lead screw. In addition, when the spray valve is installed into the reaction kettle, insufficient installation space and failure to reset may occur. SUMMARY

[0004] In view of the above problems in the prior art, the present application provides a pneumatic spray valve to solve the problems such as over-rotation of the lead screw to damage the cleaning shaft body, insufficient installation space and failure to reset when a fault occurs.

[0005] In order to solve the above technical problems, the present application adopts the following technical solutions:

[0006] The pneumatic spray valve comprises a valve body, which is provided with an upper valve body and a lower valve body, the upper valve body is detachably connected with the lower valve body, the upper valve body is provided with a valve cavity, one side of the valve cavity is provided with a liquid inlet for conductive connection with a liquid supply pipeline, the upper end of the upper valve body is provided with an upper connecting disc, the lower end of the upper valve body is provided with a lower connecting disc, the connection part of the upper valve body and the lower valve body is provided with a valve body gasket, and the lower part of the valve body gasket is provided with a pipeline flange;

[0007] The main shaft is slidably installed in the valve body, the main shaft is hollow and the inner wall is provided with a liquid guide hole, one end of the main shaft is provided with a reciprocating structure, the other end is provided with a spray head, the reciprocating structure presses the main shaft to make the liquid guide hole enter the valve cavity and be conductively connected with the liquid inlet, and the spray head extends out of the valve body, the first sealing structure is arranged between the upper connecting disc and the main shaft, and the second sealing structure is arranged between the lower connecting disc and the main shaft.

[0008] Further, the reciprocating structure comprises a connecting rod, a cylinder connecting plate, a rootless tension spring, and a cylinder, the bottom end of the connecting rod is fixedly connected with the upper connecting disc, the cylinder connecting plate is arranged at the top end of the connecting rod, the rootless tension spring is arranged outside the cylinder shaft, and the rootless tension spring is a circular-arc spring, a tension spring inner support guide seat is arranged between the upper segment of the rootless tension spring and the cylinder shaft, and the top end of the rootless tension spring is clamped by the cylinder connecting plate and the tension spring inner support guide seat;

[0009] A tension spring inner support seat is arranged between the lower segment of the rootless tension spring and the cylinder shaft, and a tension spring outer support seat is arranged outside the lower segment of the rootless tension spring, and the bottom end of the rootless tension spring is clamped by the tension spring inner support seat and the tension spring outer support seat;

[0010] The bottom of the cylinder is fixedly connected with the cylinder connecting plate, and the cylinder shaft penetrates through the cylinder connecting plate and is connected with the tension spring inner support seat;

[0011] The tension spring inner support guide seat, the tension spring outer support seat, the tension spring inner support seat, the cylinder connecting plate, and the contact part of the rootless tension spring are all provided with corresponding guide threads.

[0012] Further, the lower end of the reciprocating structure is provided with a motor part, the motor part comprises a motor connecting plate, a motor, a synchronous rotation structure, and a connecting shaft, the motor connecting plate is slidingly installed on the connecting rod, a copper sleeve is arranged at the connecting position of the motor connecting plate and the outer end of the connecting rod, the motor is rotationally connected with the synchronous rotation structure through the motor connecting plate, one end of the synchronous rotation structure is connected with the connecting shaft through a key, and the other end is connected with the motor through a key, and the connecting shaft is driven by the worm gear of the synchronous rotation structure.

[0013] Further, the inside of the spraying head is provided with a plurality of layers of spraying channels, the lower end of the spraying head is provided with a spraying head pressing plate, the spraying head pressing plate is fixedly connected with the spraying head through an internal hexagonal screw, a valve seat is embedded at the connecting position of the spraying head and the outer end of the spraying head pressing plate, the valve seat is a convex character structure with a small head outward, and the connecting position of the spraying head, the spraying head pressing plate, and the valve seat is provided with an inward protrusion, and the lower valve body is provided with a lower valve body sleeve part at the connecting position of the lower valve body and the spraying head.

[0014] Further, the first sealing structure comprises a packing gland component, an O-shaped sealing ring is arranged at the joint of the packing gland component and the outer wall of the main shaft and the inner wall of the upper connecting disc, the lower part of the packing gland component is filled with a packing, a first main valve body sealing ring is arranged at the lower part of the packing, the first main valve body sealing ring is a three-layer structure, a first flooding sealing structure is arranged at the lower part of the first main valve body sealing ring, the first flooding sealing structure is combined by a three-layer flooding sealing ring and a sealing ring support seat, the flooding sealing ring and the sealing ring support seat are provided with outward protrusions at the top ends, an O-shaped ring sealing ring is arranged at the joint of the outer wall of the sealing ring support seat and the inner wall of the upper connecting disc, and main valve body guiding pieces are arranged at the upper and lower ends of the first flooding sealing structure.

[0015] Further, the second sealing structure comprises a second flooding sealing structure, the second flooding sealing structure is combined by a two-layer flooding sealing ring and a sealing ring support seat, the flooding sealing ring and the sealing ring support seat are provided with outward protrusions at the top ends, an O-shaped ring sealing ring is arranged at the joint of the outer wall of the sealing ring support seat and the inner wall of the lower connecting disc, a main valve body guiding piece is arranged at the upper end of the second flooding sealing structure, and a lower valve body sleeve guiding piece is arranged at the lower end of the second flooding sealing structure.

[0016] Further, the top end and the lower end of the air cylinder are provided with air connection ports, the motor is provided with an air inlet, the top end air connection port is communicated with the top end air connection port of the air cylinder through a hose, the top end air connection port of the air cylinder is communicated with a normally closed port of an electromagnetic valve, and the lower end air connection port of the air cylinder is communicated with a normally open port of the electromagnetic valve.

[0017] Compared with the prior art, the present application has the following beneficial effects:

[0018] The inner support seat is arranged at the upper end of the rootless tension spring, so that the rootless tension spring can reset the pneumatic spray valve to a safe position when a fault occurs on site, and the structure of the rootless tension spring ensures that the pneumatic spray valve can be installed and used in the case of insufficient installation space.

[0019] By separating the lifting and rotating structures, when the air cylinder is driven, the rootless tension spring is pulled open, so that the main shaft is no longer subjected to a downward force when passing through the valve cavity and being pressed down to the working area, the overpressure of the main shaft is avoided, the working pressure of the sealing pieces at the upper and lower parts of the main shaft is reduced, the service life of the equipment is prolonged, and the failure rate is reduced.

[0020] The packing gland part limits the packing packing and the first main valve body sealing ring downwards, avoids the first sealing structure sealing part displacement and falling due to the contact vibration of the main shaft with the first sealing structure sealing part when downward or rotating, the first main valve body sealing ring is a three-layer structure, the packing packing fills and presses the first main valve body sealing ring downwards, and the downward force is applied to the laminated first main valve body sealing ring, so that the first main valve body sealing ring is uniformly stressed when contacting with the main shaft, and the sealing stability of the first main valve body sealing ring is improved. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is a three-dimensional structure schematic diagram of the embodiment of the pneumatic spray valve of the application;

[0022] Figure 2 It is Figure 1 It is an enlarged schematic diagram of X in the middle;

[0023] Figure 3 It is Figure 1 It is an enlarged schematic diagram of Y in the middle;

[0024] Figure 4 It is Figure 1 It is an enlarged schematic diagram of Z in the middle;

[0025] Figure 5 It is Figure 1 It is an enlarged schematic diagram of Q in the middle;

[0026] Figure 6 It is a structure schematic diagram of the rootless tension spring in the embodiment of the pneumatic spray valve of the application;

[0027] The reference signs in the drawings of the specification include:

[0028] Valve body 1, upper valve body 10, valve body gasket 101, pipeline flange 102, valve cavity 11, upper connecting disc 12, lower connecting disc 13, liquid inlet 14, lower valve body 100;

[0029] Main shaft 2, liquid guide hole 21, spray head 22, spray channel 221, spray head pressing plate 222, valve seat 223;

[0030] Reciprocating structure 3, connecting rod 31, cylinder connecting plate 32, rootless tension spring 33, tension spring inner support guide seat 331, tension spring outer support seat 332, tension spring inner support seat 333, cylinder 34, cylinder shaft 340;

[0031] Motor part 4, motor connecting plate 41, copper sleeve 410, motor 42, synchronous rotation structure 43, connecting shaft 44;

[0032] First sealing structure 5, packing gland component 51, packing 52, first main valve body sealing ring 53, first flooding sealing structure 54, flooding sealing ring 541, sealing ring support seat 542, main valve body guide 55;

[0033] Second sealing structure 6, second flooding sealing structure 61, lower valve body sleeve guide 62;

[0034] O-shaped sealing ring 7;

[0035] Hexagonal socket head cap screw 8. DETAILED DESCRIPTION

[0036] In order for those skilled in the art to better understand the present application, the technical solutions of the present application are further described below in conjunction with the drawings and examples:

[0037] It should be noted that the same or similar reference numerals in the drawings of the embodiments of the present application correspond to the same or similar components; in the description of the present application, it should be understood that if the terms "upper", "lower", "left", "right", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, they are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore the terms describing the positional relationship in the drawings are only used for exemplary description, and cannot be understood as a limitation of the present patent, for those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0038] In addition, the description of "first", "second" and the like in the present application is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implying the number of the indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include at least one of the features.

[0039] In the description of the present application, unless otherwise explicitly specified and limited, if the term "connection" and the like appears to indicate the connection relationship between components, the term should be interpreted broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication or interaction relationship between two components. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the fact that those skilled in the art can realize it, when the combination of technical solutions appears to be contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, nor is it within the scope of protection required by the present application. EMBODIMENT

[0040] As Figures 1-6 shown, the pneumatic spray valve, comprising a valve body 1, provided with an upper valve body 10, a lower valve body 100, the upper valve body 10 is detachably connected with the lower valve body 100, the upper valve body 10 is provided with a valve cavity 11, one side of the valve cavity 11 is provided with a liquid inlet 14 for communicating connection with a liquid supply pipeline, the upper end of the upper valve body 10 is provided with an upper connecting disc 12, the lower end of the upper valve body 10 is provided with a lower connecting disc 13, the connecting part of the upper valve body 10 and the lower valve body 100 is provided with a valve body gasket 101, the lower part of the valve body gasket 101 is provided with a pipeline flange 102;

[0041] A main shaft 2 is slidably installed in the valve body 1, the main shaft 2 is hollow inside and the inner wall is provided with a liquid guide hole 21, one end of the main shaft 2 is provided with a reciprocating structure 3, the other end is provided with a spray head 22, the reciprocating structure 3 presses the main shaft 2 to make the liquid guide hole 21 enter the valve cavity 11 and be in communication with the liquid inlet 14, and the spray head 22 extends out of the valve body 1, the first sealing structure 5 is arranged between the upper connecting disc 12 and the main shaft 2, and the second sealing structure 6 is arranged between the lower connecting disc 13 and the main shaft 2. By installing the pneumatic spray valve on the top of the fermentation tank, through continuous spherical liquid spray, the cleaning range of the fermentation tank is maximized, the cleaning efficiency and effect are improved, at the same time, personnel entering the interior for installation operation is avoided, and the risk of equipment use is reduced.

[0042] The top end and the lower end of the cylinder 34 are provided with gas connection ports, the motor 422 is provided with an air inlet, the top end air inlet is communicated with the top end gas connection port of the cylinder 34 through a hose, the top end gas connection port of the cylinder 34 is communicated with the normally closed port of the electromagnetic valve, and the lower end gas connection port of the cylinder 34 is communicated with the normally open port of the electromagnetic valve.

[0043] Specifically, the liquid guide hole 21 is a circular hole, and it can be understood that the valve body 1 is assembled by a plurality of components.

[0044] The reciprocating structure 3 includes a connecting rod 31, a cylinder connecting plate 32, a rootless tension spring 33 and a cylinder 34, the bottom end of the connecting rod 31 is fixedly connected with the upper connecting disc 12, the cylinder connecting plate 32 is arranged at the top end of the connecting rod 31, the rootless tension spring 33 is arranged outside the cylinder shaft 340, and the rootless tension spring 33 is a circular arc spring, a tension spring inner support guide seat 331 is arranged between the upper segment of the rootless tension spring 33 and the cylinder shaft 340, and the top end of the rootless tension spring 33 is clamped by the cylinder connecting plate 32 and the tension spring inner support guide seat 331;

[0045] A tension spring inner support seat 333 is arranged between the lower segment of the rootless tension spring 33 and the cylinder shaft 340, and a tension spring outer support seat 332 is arranged outside the lower segment of the rootless tension spring 33, and the bottom end of the rootless tension spring 33 is clamped by the tension spring inner support seat 333 and the tension spring outer support seat 332;

[0046] The bottom of the cylinder 34 is fixedly connected with the cylinder connecting plate 32, and the cylinder shaft 340 penetrates the cylinder connecting plate 32 and is connected with the tension spring inner support seat 333;

[0047] The tension spring inner support guide seat 331, the tension spring outer support seat 332, the tension spring inner support seat 333, the cylinder connecting plate 32 and the contact part of the tension spring 33 are all provided with corresponding guide threads.

[0048] In the specific implementation, the parallel spring at both ends has no hook. During the lifting of the spring, the outer diameter and the inner diameter of the spring become smaller. The holes are drilled around the spring wire to be fixed by the circumferential thread. Because it is too hard, it is not convenient to manufacture and install. By clamping the outer diameter of the upper end spring and the inner diameter of the lower end spring, the inner hole of the cylinder connecting plate is processed into a circular arc spring at the upper end. After the test of the lower end spring with the inner diameter of the spring increased by the tension spring inner support seat, the lower end spring is bounced out and falls off. After the tension spring outer support seat is added to the lower end spring for spring test, the spring does not fall off after the stroke is lengthened and the spring is lifted. However, the outer diameter of the upper end spring becomes smaller. In order to be more stable, the tension spring inner support seat is added to the upper end. In this way, the rootless spring is safely and effectively operated. When a fault occurs on site, the rootless tension spring can reset the pneumatic spray valve to a safe position. At the same time, the structure of the rootless tension spring ensures that the pneumatic spray valve can be installed and used in the case of insufficient installation space.

[0049] The lower end of the reciprocating structure 3 is provided with a motor part 4. The motor part 4 includes a motor connecting plate 41, a motor 42, a synchronous rotation structure 43 and a connecting shaft 44. The motor connecting plate 41 is slidingly installed on the connecting rod 31. The motor connecting plate 41 is provided with a copper sleeve 410 at the connecting position with the outer end of the connecting rod 31. The motor 422 is rotationally connected with the synchronous rotation structure 43 through the motor connecting plate 41. One end of the synchronous rotation structure 43 is connected with the connecting shaft 44 through a key, and the other end is connected with the motor 422 through a key. The connecting shaft 44 is driven by the worm gear of the synchronous rotation structure 43.

[0050] In specific use, when the air cylinder 34 is driven, the rootless tension spring 33 is pulled open, the main shaft 2 is pressed down through the valve cavity 11, when the liquid guide hole 21 in the main shaft 2 is connected with the liquid inlet 14 in the valve cavity 11, the motor part 4 rotates the main shaft 2 through the synchronous rotating structure 43, the spray head 22 at the bottom of the main shaft 2 rotates 360°, the spray head 22 sprays liquid in rotation, the cleaning range is increased, the screw rod structure used in the traditional spray valve rotates the spray head to extend the cavity to spray liquid when the liquid spraying work is carried out, at this time, the screw rod is always in the process of downward rotation, which is easy to cause the abrasion of the sealing element and the damage of the cleaning shaft body caused by the over-rotation of the screw rod, the lifting and rotating structure are separated in the application, when the air cylinder 34 is driven, the rootless tension spring 33 is pulled open, the main shaft 2 is pressed down to the working area through the valve cavity 11, the downward force is not applied to the main shaft 2 any more, the overpressure of the main shaft 2 is avoided, the working pressure of the sealing elements at the upper and lower parts of the main shaft 2 is reduced, the service life of the equipment is prolonged, the failure rate is reduced, it can be understood that the air cylinder 34 and the motor part 4 are synchronously controlled by the external power system such as the electromagnetic valve.

[0051] The spray head 22 is internally provided with a plurality of layers of spray channels 221, the lower end of the spray head 22 is provided with a spray head pressing plate 222, the spray head pressing plate 222 is fixedly connected with the spray head 22 through the internal hexagonal screw 8, the connection position between the spray head 22 and the outer end of the spray head pressing plate 222 is embedded with a valve seat 223, the valve seat 223 is a convex letter-shaped structure with a small head outward, and the connection position between the spray head 22, the spray head pressing plate 222 and the valve seat 223 is provided with an inward protrusion, and the connection position between the lower valve body 100 and the spray head 22 is provided with a lower valve body sleeve member 62.

[0052] In specific use, the valve seat 223 is fixed between the spray head pressing plate 222 and the spray head 22 through the internal hexagonal screw 8, wherein the convex letter-shaped structure with a small head outward of the valve seat 223 avoids the falling of the valve seat 223 caused by the shock when the spray head 22 sprays.

[0053] The first sealing structure 5 comprises a packing gland part 51, an O-shaped sealing ring is arranged at the joint between the packing gland part 51 and the outer wall of the main shaft 2 and the inner wall of the upper connecting disc 12, the lower part of the packing gland part 51 is filled with a packing 52, the lower part of the packing 52 is provided with a first main valve body sealing ring 53, the packing gland part 51 limits the downward position of the packing 52 and the first main valve body sealing ring 53, so as to avoid the displacement and falling of the sealing parts of the first sealing structure 5 due to the contact and vibration of the main shaft with the sealing parts of the first sealing structure 5 when the main shaft is downward or rotated, the first main valve body sealing ring 53 is a three-layer structure, the packing 52 fills and presses downward the first main valve body sealing ring 53, so as to exert a downward force on the three-layer first main valve body sealing ring 53, and the first main valve body sealing ring 53 is uniformly stressed when it is in contact with the main shaft, thereby improving the sealing stability of the first main valve body sealing ring 53;

[0054] The lower part of the first main valve body sealing ring 53 is provided with a first universal sealing structure 54, the first universal sealing structure 54 is combined by three-layer universal sealing rings 541 and a sealing ring support seat 542, the sealing ring support seat 542 is a hard structure,

[0055] The top end of the universal sealing ring 541 and the sealing ring support seat 542 is provided with an outward protrusion, an O-shaped ring sealing ring 7 is arranged at the joint between the outer wall of the sealing ring support seat 542 and the inner wall of the upper connecting disc 12, the outward protrusion at the top end of the universal sealing ring 541 and the sealing ring support seat 542 makes the universal sealing ring 541 tightly clamped with the sealing ring support seat 542 when the universal sealing ring 541 is in contact with the main shaft, and the O-shaped ring sealing ring 7 at the joint between the outer wall of the sealing ring support seat 542 and the inner wall of the upper connecting disc 12 makes the place where the sealing ring support seat 542 contacts with the valve body generate damping, so as to avoid the loosening of the sealing ring support seat 542, and the first universal sealing structure 54 is provided with a main valve body guide 55 at both ends.

[0056] In specific use, the second sealing structure 6 comprises a second universal sealing structure 61, the second universal sealing structure 61 is combined by two-layer universal sealing rings 541 and a sealing ring support seat 542, the top end of the universal sealing ring 541 and the sealing ring support seat 542 is provided with an outward protrusion, an O-shaped ring sealing ring 7 is arranged at the joint between the outer wall of the sealing ring support seat 542 and the inner wall of the lower connecting disc 13, the upper end of the second universal sealing structure 61 is provided with a main valve body guide 55, and the lower end of the second universal sealing structure 61 is provided with a lower valve body sleeve guide 62.

[0057] It can be understood that the sealing structure of the second sealing structure 6 is similar to the structure and function of the first sealing structure 5, but the second sealing structure 6 is used for the connection sealing between the upper valve body 10 and the lower valve body 100, so that the upper valve body 10 and the lower valve body 100 can be disassembled and installed, and therefore the second sealing structure 6 is essential.

[0058] The above-mentioned are only embodiments of the present application, and the common knowledge of specific structures and characteristics in the scheme is not described in detail, and the ordinary skilled person in the art knows all the ordinary technical knowledge in the technical field of the application before the application date or the priority date, can know all the prior art in the field, and has the ability to apply conventional experimental means before that date, and the ordinary skilled person in the art can perfect and implement the present scheme under the guidance of the present application, and the ordinary skilled person in the art can perfect and implement the present scheme under the guidance of the present application, and the ordinary skilled person in the art can perfect and implement the present scheme under the guidance of the present application, and the ordinary skilled person in the art can perfect and implement the present scheme under the guidance of the present application, and the ordinary skilled person in the art can perfect and implement the present scheme under the guidance of the present application, and the ordinary skilled person in the art can perfect and implement the present scheme under the guidance of the present application, and the ordinary skilled person in the art can perfect and implement the present scheme under the guidance of the present application, and the ordinary skilled person in the art can perfect and implement the present scheme under the guidance of the present application, and the ordinary skilled person in the art can perfect and implement the present scheme under the guidance of the present application, and the ordinary skilled person in the art can perfect and implement the present scheme under the guidance of the present application, and the ordinary skilled person in the art can perfect and implement the present scheme under the guidance of the present application, and the ordinary skilled person in the art can perfect and implement the present scheme under the guidance of the present application, and the ordinary skilled person in the art can perfect and implement the present scheme under the guidance of the present application, and the ordinary skilled person in the art can perfect and implement the present scheme under the guidance of the present application, and the ordinary

Claims

1. A pneumatic spray valve characterized by, The utility model relates to a valve body (1) is connected with the main shaft (2) and the spray head (22) of the reciprocating structure (3) of the upper valve body (10) and the lower valve body (100) of the upper valve body (10) and the lower valve body (100) are connected, and the reciprocating structure (3) is connected with the first sealing structure (5) and the second sealing structure (6) of the upper connecting disc (12) and the lower connecting disc (13) of the upper valve body (10) and the lower valve body (100) are connected. The utility model relates to a valve body (1) is connected with the main shaft (2) and the spray head (22) of the reciprocating structure (3) of the upper valve body (10) and the lower valve body (100) are connected, and the reciprocating structure (3) is connected with the first sealing structure (5) and the second sealing structure (6) of the upper connecting disc (12) and the lower connecting disc (13) of the upper valve body (10) and the lower valve body (100) are connected. The utility model relates to a valve body (1) is connected with the main shaft (2) and the spray head (22) of the reciprocating structure (3) of the upper valve body (10) and the lower valve body (100) are connected, and the reciprocating structure (3) is connected with the first sealing structure (5) and the second sealing structure (6) of the upper connecting disc (12) and the lower connecting disc (13) of the upper valve body (10) and the lower valve body (100) are connected. The utility model relates to a valve body (1) is connected with the main shaft (2) and the spray head (22) of the reciprocating structure (3) of the upper valve body (10) and the lower valve body (100) are connected, and the reciprocating structure (3) is connected with the first sealing structure (5) and the second sealing structure (6) of the upper connecting disc (12) and the lower connecting disc (13) of the upper valve body (10) and the lower valve body (100) are connected. The utility model relates to a valve body (1) is connected with the main shaft (2) and the spray head (22) of the reciprocating structure (3) of the upper valve body (10) and the lower valve body (100) are connected, and the reciprocating structure (3) is connected with the first sealing structure (5) and the second sealing structure (6) of the upper connecting disc (12) and the lower connecting disc (13) of the upper valve body (10) and the lower valve body (100) are connected. The utility model relates to a valve body (1) is connected with the main shaft (2) and the spray head (22) of the reciprocating structure (3) of the upper valve body (10) and the lower valve body (100) are connected, and the reciprocating structure (3) is connected with the first sealing structure (5) and the second sealing structure (6) of the upper connecting disc (12) and the lower connecting disc (13) of the upper valve body (10) and the lower valve body (100) are connected. The utility model relates to a valve body (1) is connected with the main shaft (2) and the spray head (22) of the reciprocating structure (3) of the upper valve body (10) and the lower valve body (100) are connected, and the reciprocating structure (3) is connected with the first sealing structure (5) and the second sealing structure (6) of the upper connecting disc (12) and the lower connecting disc (13) of the upper valve body (10) and the lower valve body (100) are connected.

2. The pneumatic spray valve of claim 1, wherein: The reciprocating structure (3) lower end is provided with motor component (4), the motor component (4) includes motor connecting plate (41), motor (42), synchronous rotation structure (43), connecting shaft (44), the motor connecting plate (41) is slidably installed on connecting rod (31), the motor connecting plate (41) is connected with the outer end of connecting rod (31) and is provided with copper bushing (410), the motor (42) is rotatably connected with synchronous rotation structure (43) through motor connecting plate (41), one end of the synchronous rotation structure (43) is connected to connecting shaft (44) by key, the other end is connected to motor (42) by key, and the connecting shaft (44) is connected by worm gear transmission of synchronous rotation structure (43).

3. The pneumatic spray valve of claim 1, wherein: The spray head (22) is internally provided with several layers of spray channels (221), the lower end of the spray head (22) is provided with a spray head pressing plate (222), the spray head pressing plate (222) is fixedly connected with the spray head (22) by an internal hexagonal screw (8), the outer end of the spray head (22) and the spray head pressing plate (222) is embedded with a valve seat (223), the valve seat (223) is a convex character structure with a small head outward, and the connection between the spray head (22) and the spray head pressing plate (222) and the valve seat (223) is provided with an inward protrusion, the lower valve body (100) is provided with a lower valve body sleeve (62) at the connection with the spray head (22).

4. The pneumatic spray valve of claim 1, wherein: The first sealing structure (5) includes a packing gland component (51), the packing gland component (51) is provided with an O-shaped sealing ring at the connection with the outer wall of the main shaft (2) and the inner wall of the upper connecting disc (12), the lower part of the packing gland component (51) is filled with a packing packing (52), the lower part of the packing packing (52) is provided with a first main valve body sealing ring (53), the first main valve body sealing ring (53) is a three-layer structure, the lower part of the first main valve body sealing ring (53) is provided with a first universal sealing structure (54), the first universal sealing structure (54) is composed of three-layer universal sealing ring (541) combined with sealing ring support seat (542), the sealing ring support seat (542) is a hard structure, the universal sealing ring (541) is provided with an outward protrusion at the connection with the top end of the sealing ring support seat (542), the outer wall of the sealing ring support seat (542) is provided with an O-shaped ring sealing ring (7) at the connection with the inner wall of the upper connecting disc (12), the first universal sealing structure (54) is provided with a main valve body guide (55) at both ends.

5. The pneumatic spray valve of claim 2, wherein: The gas cylinder (34) is provided with a gas inlet at the top end and the lower end, the motor (42) is provided with an air inlet, the top end air inlet is communicated with the top end gas inlet of the gas cylinder (34) through a hose, the top end gas inlet of the gas cylinder (34) is communicated with a normally closed port of a solenoid valve, and the lower end gas inlet of the gas cylinder (34) is communicated with a normally open port of a solenoid valve.

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