Fluid color changing diaphragm valve

Abstract

The utility model relates to the field of fluid color changing valves, in particular to a fluid color changing diaphragm valve. The color changing diaphragm valve comprises a valve seat, a piston fixing block, a piston body, a rear base, an ejector pin, a plug and an ejector pin reset mechanism, the valve seat, the piston fixing block, the piston body and the rear base are sequentially fixed together, a public channel and a fluid inlet are formed in the valve seat, the public channel is communicated with the fluid inlet, a backflow port is formed in the piston fixing block, and the ejector pin is arranged in the backflow port. The backflow port is communicated with the fluid inlet, the ejector pin is movably connected in an inner cavity of the fluid color changing diaphragm valve, an ejector pin reset mechanism is arranged between the ejector pin and the inner cavity of the fluid color changing diaphragm valve, and a plug used for blocking the public channel is arranged at the end of the ejector pin. An air source enters through the air inlet of the piston main body, pushes the ejector pin and the plug to move and blocks a public channel of the valve seat, so that fluid flows back. The plug is opened through the ejector pin reset mechanism to enable fluid to flow out of the public channel. The structure is simple, maintenance is convenient, and cost is saved.

Description

Technical Field

[0001] The utility model relates to the field of fluid color-changing valves, in particular to a fluid color-changing diaphragm valve. Background Art

[0002] Color-changing valves are a common piece of industrial automation equipment, primarily used to adjust the color of fluids. They are commonly found in industries such as printing, dyeing, and painting. Their operating principle is as follows: a color-changing valve contains multiple color channels, each with a regulator that adjusts the color depth as needed. When a color change is required, the valve automatically closes the current color channel and opens the next one. However, existing color-changing valves are complex and expensive. Utility Model Content

[0003] The technical problem to be solved by this utility model is as follows: To address the technical problems described in the background art, this utility model provides a fluid color-changing diaphragm valve. Air enters through the air inlet of the piston body, pushing the ejector pin and plug to move and block the common passage of the valve seat, allowing fluid to flow back. The ejector pin reset mechanism releases the plug, allowing fluid to flow out of the common passage. This application has a simple structure, is easy to maintain, and saves costs.

[0004] The technical solution adopted by the utility model to solve its technical problems is:

[0005] A fluid color-changing diaphragm valve comprises a valve seat, a piston fixing block, a piston body, a rear base, a thimble, a plug, and a thimble reset mechanism. The valve seat, piston fixing block, piston body, and rear base are fixed together in sequence. A common channel and a fluid inlet are provided in the valve seat, and the common channel and the fluid inlet are connected. A reflux port is provided in the piston fixing block, and the reflux port is connected to the fluid inlet. The thimble is movably connected to the inner cavity of the fluid color-changing diaphragm valve. A thimble reset mechanism is provided between the thimble and the inner cavity of the fluid color-changing diaphragm valve. The end of the thimble is provided with a plug for blocking the common channel. An air inlet is provided on the side of the piston body.

[0006] Specifically, the common channel vertically penetrates the valve seat, and the fluid inlet is located on the side of the valve seat.

[0007] Specifically, a vertical flow channel is provided in the piston fixing block, the reflux port is connected to the vertical flow channel, the reflux port is located on the side of the piston fixing block, the vertical flow channel is connected to the fluid inlet, a card slot is provided in the piston fixing block, a piston fixing block sealing bowl is installed in the card slot, a through hole for passing the ejector pin is provided in the piston fixing block sealing bowl, and the card slot is connected to the vertical flow channel.

[0008] Specifically, the ejector pin reset mechanism is a reset spring.

[0009] Specifically, the ejector pin resetting mechanism includes an air compressor, which is connected to an air inlet on the end face of the rear base through an air pipe.

[0010] Specifically, a piston part is provided in the inner cavity of the piston body, and the piston part includes a piston core fixing part, a piston expansion and contraction sealing bowl, and an ejector pin fixing part. The piston expansion and contraction sealing bowl is sleeved on the raised part of the piston core fixing part, and the raised part of the ejector pin fixing part is placed in the hole of the piston core fixing part. The ejector pin fixing part is fixed to one end of the ejector, and the other end of the ejector pin is connected to a plug.

[0011] Specifically, the ejector pin passes through the movable sealing bowl of the piston, and the ejector pin and the movable sealing bowl of the piston are fixed together.

[0012] Specifically, a thread is provided at the end of the ejector pin, and the plug is connected to the ejector pin thread.

[0013] Specifically, a sealing ring is installed on the rear base.

[0014] The beneficial effects of the present invention are as follows: It provides a fluid color-changing diaphragm valve. Air enters through the air inlet of the piston body, pushing the ejector pin and plug to move and block the common passage of the valve seat, allowing fluid to flow back. The ejector pin reset mechanism opens the plug, allowing fluid to flow out of the common passage. This application has a simple structure, is easy to maintain, and saves costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0016] Figure 1 It is a structural diagram of the utility model;

[0017] Figure 2 It is a structural schematic diagram of a cross-sectional view of the present utility model;

[0018] Figure 3 It is a structural schematic diagram of an exploded view of the present utility model;

[0019] In the figure, 1. valve seat, 2. piston fixing block, 3. piston body, 4. rear base, 5. ejector pin, 6. plug,

[0020] 7. Ejector pin reset mechanism, 8. Piston fixed block sealing bowl, 9. Piston core fixing piece, 10. Piston expansion and contraction sealing bowl, 11. Ejector pin fixing piece, 12. Piston movable sealing bowl, 13. Sealing ring, 101. Common channel, 102. Fluid inlet, 201. Return port, 202. Card slot, 301. Air inlet, 401. Air inlet 1. DETAILED DESCRIPTION

[0021] The present invention will now be described in further detail with reference to the accompanying drawings, which are simplified schematic diagrams that illustrate the basic structure of the present invention in a schematic manner.

[0022] Figure 1 It is a structural diagram of the utility model; Figure 2 It is a structural schematic diagram of a cross-sectional view of the present utility model;

[0023] Figure 3 It is a structural schematic diagram of an exploded view of the present utility model.

[0024] Combined with attachment Figure 1 , Attachment Figure 2 and attached Figure 3 As shown, a fluid color-changing diaphragm valve includes a valve seat 1, a piston fixing block 2, a piston body 3, a rear base 4, a thimble 5, a plug 6, and a thimble reset mechanism 7. The valve seat 1, piston fixing block 2, piston body 3, and rear base 4 are fixed together in sequence. A common channel 101 and a fluid inlet 102 are provided in the valve seat 1, and the common channel 101 and the fluid inlet 102 are connected. A reflux port 201 is provided in the piston fixing block 2, and the reflux port 201 is connected to the fluid inlet 102. The thimble 5 is movably connected to the inner cavity of the fluid color-changing diaphragm valve, and a thimble reset mechanism 7 is provided between the thimble 5 and the inner cavity of the fluid color-changing diaphragm valve. The end of the thimble 5 is provided with a plug 6 for blocking the common channel 101, and an air inlet 301 is provided on the side of the piston body 3.

[0025] The common channel 101 vertically penetrates the valve seat 1 , and the fluid inlet 102 is located on the side of the valve seat 1 .

[0026] A vertical flow channel is provided in the piston fixing block 2, and the return port 201 is connected to the vertical flow channel. The return port 201 is located on the side of the piston fixing block 2, and the vertical flow channel is connected to the fluid inlet 102. A slot 202 is provided in the piston fixing block 2, and a piston fixing block sealing bowl 8 is installed in the slot 202. A through hole for passing the ejector pin 5 is provided in the piston fixing block sealing bowl 8, and the slot 202 is connected to the vertical flow channel.

[0027] The ejector pin reset mechanism 7 is a reset spring.

[0028] The ejector pin reset mechanism 7 includes an air compressor, which is connected to the air inlet 401 on the end face of the rear base 4 through an air pipe.

[0029] A piston part is provided in the inner cavity of the piston body 3, and the piston part includes a piston core fixing part 9, a piston expansion and contraction sealing bowl 10, and an ejector pin fixing part 11. The piston expansion and contraction sealing bowl 10 is sleeved on the raised part of the piston core fixing part 9, and the raised part of the ejector pin fixing part 11 is placed in the hole of the piston core fixing part 9. The ejector pin fixing part 11 is fixed to one end of the ejector pin 5, and the other end of the ejector pin 5 is connected to the plug 6.

[0030] The ejector pin 5 passes through the piston movable sealing bowl 12 , and the ejector pin 5 and the piston movable sealing bowl 12 are fixed together.

[0031] A thread is provided at the end of the ejector pin 5 , and the plug 6 is connected to the ejector pin 5 by thread.

[0032] A sealing ring 13 is installed on the rear base 4 .

[0033] Example 1: First, an air compressor delivers air through the air inlet 301 on the side of the piston body 3. The air pushes the ejector pin 5 and the plug 6 inward, causing the plug 6 to disengage from the common passage 101 in the valve seat 1. Paint is then delivered through the fluid inlet 102 on the side of the valve seat 1 and flows out of the common passage 101 at the bottom of the valve seat 1.

[0034] When the paint output is to stop, the air compressor stops supplying air to the air inlet 301. At this time, driven by the rebound of the return spring, the ejector pin 5 and the plug 6 are pushed to move in the opposite direction until the plug 6 blocks the opening of the common channel 101 at the bottom of the valve seat 1. At this time, the paint flowing into the fluid inlet 102 will flow out from the return port 201 and flow into the circulation pipeline for circulation.

[0035] Example 2: First, an air compressor delivers air through the air inlet 301 on the side of the piston body 3. The air pushes the ejector pin 5 and plug 6 inward, disengaging the plug 6 from the common passage 101 in the valve seat 1. Paint is then delivered through the fluid inlet 102 on the side of the valve seat 1 and flows out of the common passage 101 at the bottom of the valve seat 1.

[0036] When the paint output is to be stopped, the air compressor stops supplying gas to the air inlet 301. At this time, the air compressor sends gas into the air inlet 401 at the end face of the rear base 4. The air pressure will push the ejector pin 5 and the plug 6 to move in the opposite direction until the plug 6 blocks the opening of the common channel 101 at the bottom of the valve seat 1. At this time, the paint flowing into the fluid inlet 102 will flow out from the return port 201 and flow into the circulation pipeline for circulation.

[0037] By using several of these fluid color-changing diaphragm valves, different colors of paint can be switched accurately and efficiently in the spraying system.

[0038] Based on the above-mentioned ideal embodiment of the present invention, and in accordance with the above description, relevant personnel can make various changes and modifications without departing from the technical scope of the present invention. The technical scope of the present invention is not limited to the content of the specification, but must be determined according to the scope of the claims.

Claims

1. A fluid color-changing diaphragm valve, characterized in that: The invention comprises a valve seat (1), a piston fixing block (2), a piston body (3), a rear base (4), a thimble (5), a plug (6), and a thimble reset mechanism (7). The valve seat (1), the piston fixing block (2), the piston body (3), and the rear base (4) are fixed together in sequence. A common channel (101) and a fluid inlet (102) are provided in the valve seat (1). The common channel (101) and the fluid inlet (102) are communicated. A reflux port (201) is provided in the piston fixing block (2). The reflux port (201) is communicated with the fluid inlet (102). The thimble (5) is movably connected in the inner cavity of the fluid color-changing diaphragm valve. A thimble reset mechanism (7) is provided between the thimble (5) and the inner cavity of the fluid color-changing diaphragm valve. The end of the thimble (5) is provided with a plug (6) for blocking the common channel (101). An air inlet (301) is provided on the side of the piston body (3).

2. The fluid color-changing diaphragm valve according to claim 1, characterized in that: The common channel (101) vertically penetrates the valve seat (1), and the fluid inlet (102) is located on the side of the valve seat (1).

3. The fluid color-changing diaphragm valve according to claim 1, characterized in that: The piston fixing block (2) is provided with a vertical flow channel, the return port (201) is communicated with the vertical flow channel, the return port (201) is located on the side of the piston fixing block (2), the vertical flow channel is communicated with the fluid inlet (102), a card slot (202) is provided in the piston fixing block (2), a piston fixing block sealing bowl (8) is installed in the card slot (202), a through hole for passing the ejector pin (5) is provided in the piston fixing block sealing bowl (8), and the card slot (202) is communicated with the vertical flow channel.

4. The fluid color-changing diaphragm valve according to claim 1, characterized in that: The ejector pin reset mechanism (7) is a reset spring.

5. The fluid color-changing diaphragm valve according to claim 1, characterized in that: The ejector pin reset mechanism (7) includes an air compressor, which is connected to an air inlet (401) on the end face of the rear base (4) via an air pipe.

6. The fluid color-changing diaphragm valve according to claim 1, characterized in that: A piston member is provided in the inner cavity of the piston body (3), and the piston member includes a piston core fixing member (9), a piston shrinkage sealing bowl (10), and a thimble fixing member (11). The piston shrinkage sealing bowl (10) is sleeved on the raised portion of the piston core fixing member (9), and the raised portion of the thimble fixing member (11) is placed in the hole of the piston core fixing member (9). The thimble fixing member (11) is fixed to one end of the thimble (5), and the other end of the thimble (5) is connected to a plug (6).

7. The fluid color-changing diaphragm valve according to claim 1, characterized in that: The ejector pin (5) passes through the piston movable sealing bowl (12), and the ejector pin (5) and the piston movable sealing bowl (12) are fixed together.

8. The fluid color-changing diaphragm valve according to claim 1, characterized in that: The end of the ejector pin (5) is provided with a thread, and the plug (6) is threadedly connected to the ejector pin (5).

9. The fluid color-changing diaphragm valve according to claim 1, characterized in that: A sealing ring (13) is installed on the rear base (4).

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