Double-valve-plate anti-mixing butterfly valve

Abstract

The utility model discloses a double-valve-plate anti-mixing butterfly valve, and belongs to the technical field of valves. The device mainly comprises a shell; the rotating cylinder is mounted at the upper end of the shell; the main gear is fixedly connected with the rotating cylinder; an auxiliary gear which is installed inside the housing; the pressing rod is arranged on the auxiliary gear; the valve body is mounted at the lower end of the shell; a purge valve installed between the valve bodies, the purge valve including: a tube body installed between the valve bodies; the housings are mounted at the two ends of the pipe body; the water inlet is formed in one side of the housing; the pressure head is arranged in the housing in a sliding manner; the spring is mounted at the lower end of the pressure head; the plug is mounted at the lower end of the spring; the water outlet is formed in the lower end of the pipe body. According to the double-valve-plate anti-mixing butterfly valve, by arranging the cleaning valve, the effects that the interior of the valve body is cleaned, and cross contamination between different materials is prevented are achieved.

Description

Technical Field

[0001] The present application relates to the field of valve technology, and in particular to a double-valve plate anti-mixing butterfly valve. Background Art

[0002] In the food production process, especially in scenarios involving cross-pipeline transportation of different materials, it is crucial to ensure strict isolation between materials. This requirement not only affects the purity and quality of the product, but also directly affects the health and safety of consumers.

[0003] Valves play an important role in scenarios where different materials are transported through cross-pipelines. Through simple structure and easy operation, they achieve preliminary control and transportation of materials in cross-pipeline systems. This valve design can usually meet general material control needs, ensure the basic flow of materials in the pipeline, and provide a certain sealing effect when closed, thereby achieving isolation between materials to a certain extent.

[0004] However, after long-term use, the sealing performance of single-valve valves may gradually decline due to factors such as wear, corrosion or manufacturing defects, further increasing the risk of leakage. If there is a tiny internal leakage, this leakage problem is particularly fatal in the food hygiene industry because it may cause cross-contamination between different materials, leading to serious food safety accidents.

[0005] Therefore, it is necessary to provide a double-valve plate anti-mixing butterfly valve to solve the above problems.

[0006] It should be noted that the above information disclosed in this Background section is only for understanding the background technology of the present application concept, and therefore, it may contain information that does not constitute prior art. Summary of the Invention

[0007] Based on the above problems existing in the prior art, the problem to be solved by this application is: to provide a double-valve plate anti-mixing butterfly valve to solve the problem of slight internal leakage, which leads to cross contamination between different materials and thus causes serious food safety accidents.

[0008] The technical solution adopted by this application to solve the technical problem is: a double-valve plate anti-mixing butterfly valve, including:

[0009] case;

[0010] a rotary cylinder mounted on the upper end of the housing;

[0011] A main gear, which is fixedly connected to the rotating cylinder;

[0012] a pinion gear mounted inside the housing;

[0013] a pressure rod mounted on the pinion gear;

[0014] a valve body mounted on the lower end of the housing;

[0015] A purge valve is installed between the valve bodies, and the purge valve includes:

[0016] a pipe body, the pipe body being installed between the valve bodies;

[0017] a cover shell, which is mounted at both ends of the tube body;

[0018] a water inlet mounted on one side of the housing;

[0019] a pressure head, the pressure head being slidably disposed inside the housing;

[0020] a spring mounted on the lower end of the pressure head;

[0021] A plug installed at the lower end of the spring;

[0022] A water outlet is installed at the lower end of the pipe body.

[0023] Furthermore, sensors are fixedly provided at both ends of the housing, the main gear is engaged with the sub-gear, the sub-gear is arranged as a half gear, and a rotating shaft is fixedly provided at the lower end of the sub-gear.

[0024] Furthermore, a mounting ring is fixedly provided inside the valve body, and a sealing ring is fixedly provided at the connection between the mounting ring and the valve body.

[0025] Furthermore, a valve core is rotatably arranged inside the mounting ring.

[0026] Furthermore, the interior of the cover shell is communicated with the interior of the tube body, a water inlet pipe is fixedly provided at one end of the water inlet, and a sealing gasket is fixedly provided at the connection between the pressure head and the cover shell.

[0027] Furthermore, a chassis is fixedly provided at the lower end of the anti-mixing butterfly valve.

[0028] The beneficial effect of the present application is that the double-valve plate anti-mixing butterfly valve provided by the present application, by setting a cleaning valve, can clean the inside of the valve body when there is a slight internal leakage, thereby preventing cross contamination between different materials.

[0029] In addition to the above-described purposes, features and advantages, the present application also has other purposes, features and advantages. The present application will be further described in detail below with reference to the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The drawings that constitute part of this application are used to provide a further understanding of this application. The illustrative embodiments of this application and their descriptions are used to explain this application and do not constitute an improper limitation on this application. In the drawings:

[0031] Figure 1 This is an overall schematic diagram of the double-valve plate anti-mixing butterfly valve in this application;

[0032] Figure 2 Schematic diagram of the explosion of the double-valve plate anti-mixing butterfly valve in this application;

[0033] Figure 3 is a cross-sectional schematic diagram of the tube body;

[0034] Figure 4 is a cross-sectional schematic diagram of a cleaning valve;

[0035] Among them, the reference numerals in the figures are:

[0036] 1. Housing; 2. Anti-mix butterfly valve; 10. Rotating cylinder; 4. Sensor; 13. Main gear; 23. Valve body; 3. Chassis; 22. Cleaning valve; 221. Pipe body; 222. Cover; 223. Sealing ring; 224. Pressure head; 225. Spring; 226. Water inlet; 227. Plug; 24. Mounting ring; 25. Valve core; 26. Sub-gear; 27. Pressure rod; 228. Water outlet. DETAILED DESCRIPTION

[0037] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0038] In order to enable those skilled in the art to better understand the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings 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 in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of this application.

[0039] like Figure 1-Figure 2 As shown, the present application provides a double-valve plate anti-mixing butterfly valve, comprising a housing 1 and a rotary cylinder 10 fixedly arranged at the upper end of the housing 1, the rotary cylinder 10 providing a power source for the whole;

[0040] At the same time, sensors 4 are fixedly provided at both ends of the housing 1. The sensors 4 are used to monitor the switch state or position of the valve, ensure that the valve works in the correct position, and feed back the signal to the control system.

[0041] The output end of the rotary cylinder 10 extends into the interior of the housing 1 and is fixedly connected to the main gear 13. At the same time, two sets of pinion gears 26 are fixedly provided inside the housing 1. The two sets of pinion gears 26 are half gears and mesh with the main gear 13. Thus, the rotary cylinder 10 drives the two sets of pinion gears 26 to rotate by driving the main gear 13.

[0042] In addition, an anti-mixing butterfly valve 2 is fixedly provided at the lower end of the housing 1. The anti-mixing butterfly valve 2 is used to control the on-off of the material. The anti-mixing butterfly valve 2 includes two sets of valve bodies 23 fixedly provided at the lower end of the housing 1. The valve body 23 is the main part of the material channel. A mounting ring 24 is fixedly provided inside the valve body 23. A sealing ring (not shown in the figure) is fixedly provided at the connection between the mounting ring 24 and the valve body 23 to ensure that the valve body 23 can be tightly sealed when closed to prevent material leakage.

[0043] At the same time, a valve core 25 is rotatably provided inside the mounting ring 24. The valve core 25 is used to transmit rotational force and control the flow of materials. Rotating shafts (not shown in the figure) are fixedly provided at both ends of the valve core 25. The rotating shafts are fixedly connected to the auxiliary gear 26 so that the rotational motion of the main gear 13 is transmitted to the valve core 25 through the auxiliary gear 26, thereby realizing the opening and closing action of the anti-mixing butterfly valve 2.

[0044] It should be noted that the anti-mixing butterfly valve 2 can transmit the rotational motion of the main gear 13 to the valve core 25 through the secondary gear 26, thereby achieving rapid opening and closing while reducing material resistance. In cross-pipes, when materials need to be switched, the valve core 25 will be tightly closed to prevent mixing between different materials.

[0045] like Figure 2-Figure 4 As shown, a cleaning valve 22 is fixedly provided between the two valve bodies 23 at the lower end of the housing 1. The cleaning valve 22 is used to clean and purge the closed pipeline between the valve bodies 23;

[0046] The cleaning valve 22 includes a tube body 221 fixedly arranged at the lower end of the housing 1. The tube body 221 is the main structure of the cleaning valve 22 and constitutes a channel for material flow. At the same time, two sets of cover shells 222 are fixedly arranged at both ends of the tube body 221. The interior of the cover shells 222 is connected to the interior of the tube body 221, and a cleaning channel is opened at the lower end of the two sets of cover shells 222. The channel is used for cleaning liquid to enter the interior of the tube body 221 to clean it.

[0047] A water inlet 226 is fixedly provided on one side of the upper cover 222. The water inlet 226 is the entrance for the cleaning liquid to enter the cleaning valve 22. A water inlet pipe (not shown in the figure) is fixedly provided at one end of the water inlet 226. The water inlet pipe passes through the cover 222 and enters the interior of the cover 222.

[0048] At the same time, a pressure head 224 is slidably provided inside the housing 222, and the pressure head 224 is provided through the housing 222 and extends to the outside of the housing 222. A sealing gasket (not shown in the figure) is fixedly provided at the connection between the pressure head 224 and the housing 222. The sealing gasket is used to prevent the cleaning liquid from leaking from the connection during the cleaning process.

[0049] A spring 225 is provided at the lower end of the pressure head 224 inside the housing 222, and a plug 227 is fixedly provided at the other end of the spring 225 away from the pressure head 224. The plug 227 is used to close the cleaning channel when cleaning is not required to prevent external impurities or moisture from entering. A sealing ring 223 is fixedly provided at the connection between the plug 227 and the cleaning channel to ensure the sealing of the plug 227 when closing the cleaning channel. At the same time, a pressure rod 27 is fixedly provided on the upper end rotation shaft of one group of valve cores 25 and the lower end rotation shaft of the other group of valve cores 25;

[0050] At the same time, the cleaning valve 22 at the lower end is similarly configured, and a water outlet 228 is fixedly provided on one side of the lower end housing 222, and the water outlet 228 is used to discharge the cleaning liquid inside the valve body;

[0051] It should be noted that the pressure rod 27 can rotate with the rotation of the pinion 26. When the pressure rod 27 starts to rotate until it contacts the pressure head 224, the pressure head 224 is pressed by the pressure rod 27, which pushes the plug 227 of the cleaning valve 22 to move vertically along the cleaning channel at the lower end of the cover 222 until the plug 227 is separated from the cleaning channel, thereby opening the cleaning channel to facilitate the cleaning liquid to enter the interior of the tube body 221, thereby achieving a cleaning effect on the interior of the tube body 221. When cleaning is completed, the cleaning liquid will be discharged through the water outlet 228 at the lower end of the cleaning valve 22.

[0052] When the pressure rod 27 is away from the pressure head 224 and no longer applies pressure to the pressure head 224, the spring 225 will use its own elastic force to push the plug 227 of the cleaning valve 22 back to the closed position to ensure that the cleaning liquid will not continue to flow in or leak;

[0053] The cleaning channel of the cleaning valve 22 is designed to be split, so as to disperse the kinetic energy of the fluid during the closing process, reduce the degree of sudden changes in the flow rate, and thus more smoothly adjust the fluid flow rate, thereby effectively reducing the occurrence of water hammer. At the same time, the high torque provided by the gear transmission can ensure that the valve maintains a stable operating speed during the closing process, avoiding the aggravation of water hammer caused by closing too quickly.

[0054] At the same time, a chassis 3 is fixedly provided at the lower end of the anti-mixing butterfly valve 2, and the chassis 3 fixes the two sets of anti-mixing butterfly valves 2 and connects the cleaning valve 22 to ensure the stability of the valve during operation;

[0055] When the anti-mixing butterfly valve 2 is closed, the rotating cylinder 10 drives the two sets of sub-gears 26 to rotate by driving the main gear 13, thereby rotating the rod 27 on the rotating shaft. When the pressure rod 27 rotates until it contacts the pressure head 224, the pressure head 224 is opened by the pressure of the pressure rod 27. At this time, if a small internal leakage occurs in the anti-mixing butterfly valve 2, cleaning liquid or compressed air can be introduced through the water inlet 226 of the cleaning valve 22 to clean and purge the closed pipeline between the anti-mixing butterfly valves 2 to prevent material residue and contamination, thereby timely dealing with the small internal leakage of the anti-mixing butterfly valve 2.

[0056] After cleaning is completed, the cleaning valve 22 located at the lower end of the anti-mixing butterfly valve 2 will discharge the cleaning liquid inside the valve body through the water outlet 228 to prevent the cleaning liquid from damaging the valve body 23 inside.

[0057] The above description is merely a preferred embodiment of the present application and is not intended to limit the present application. Various modifications and variations are possible for those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present application shall be included within the scope of protection of the present application.

Claims

1. Double disc anti-mixing butterfly valve, characterized by: include: housing (1); A rotary cylinder (10) mounted on the upper end of the housing (1); A main gear (13), the main gear (13) being fixedly connected to the rotary cylinder (10); A secondary gear (26), the secondary gear (26) being mounted inside the housing (1); A pressure rod (27) mounted on the pinion gear (26); a valve body (23), the valve body (23) being mounted on the lower end of the housing (1); A cleaning valve (22) is installed between the valve bodies (23), and the cleaning valve (22) includes: a pipe body (221), the pipe body (221) being installed between the valve bodies (23); a cover shell (222), the cover shell (222) being mounted on both ends of the tube body (221); a water inlet (226), the water inlet (226) being mounted on one side of the housing (222); A pressure head (224), the pressure head (224) being slidably disposed inside the housing (222); A spring (225) is mounted on the lower end of the pressure head (224); A plug (227) is mounted on the lower end of the spring (225); A water outlet (228) is installed at the lower end of the tube body (221).

2. The double-valve plate anti-mixing butterfly valve according to claim 1, characterized in that: Sensors (4) are fixedly provided at both ends of the housing (1), the main gear (13) is meshed with the sub-gear (26), the sub-gear (26) is a half-gear arrangement, and a rotating shaft is fixedly provided at the lower end of the sub-gear (26).

3. The double-valve plate anti-mixing butterfly valve according to claim 1, characterized in that: An anti-mixing butterfly valve (2) is fixedly provided at the lower end of the housing (1), a mounting ring (24) is fixedly provided inside the valve body (23), and a sealing ring is fixedly provided at the connection between the mounting ring (24) and the valve body (23).

4. The double-valve plate anti-mixing butterfly valve according to claim 3, characterized in that: A valve core (25) is rotatably provided inside the mounting ring (24).

5. The double-valve plate anti-mixing butterfly valve according to claim 1, characterized in that: The interior of the cover shell (222) is in communication with the interior of the tube body (221); a water inlet pipe is fixedly provided at one end of the water inlet (226); and a sealing gasket (223) is fixedly provided at the connection between the pressure head (224) and the cover shell (222).

6. The double-valve plate anti-mixing butterfly valve according to claim 1, characterized in that: A chassis (3) is fixedly provided at the lower end of the anti-mixing butterfly valve (2).

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