Injection valve for internal mixer

Abstract

The utility model discloses an injection valve of internal mixer, specifically relates to the technical field of internal mixer, and includes: the valve body is equipped with the air inlet channel and the injection cavity that communicate with each other in its inside, the right -hand member of air inlet channel is equipped with the injection hole, the upside of injection cavity is equipped with the injection port, the piston rod structure subassembly is personally experienced sth, the piston rod structure subassembly includes valve rod, the valve rod is nested in the air inlet channel, the right -hand member of valve rod blocks the injection hole, and the left -hand member of valve rod extends to the injection cavity and is connected with the compression ring and piston in proper order, the plug is personally experienced sth, the right part screw nest of plug is in the left -hand member port of injection cavity, and the plug is connected with spring between piston, the utility model discloses the plug, spring and piston rod structure subassembly are equipped with in the valve body, form the piston rod inner pressure type structure, can not use the high pressure to be able to inject gas when injecting, and form the check valve type structure through spring, and it is not afraid that the glue material causes the blockage to it.

Description

Technical Field

[0001] This utility model relates to the field of internal mixer technology, and specifically to an air injection valve for an internal mixer. Background Technology

[0002] When mixing rubber compounds containing a high amount of silica, the internal mixer produces ethanol gas and water vapor. If these are not discharged in time, it will affect the mixing efficiency and quality. The air injection valve is installed on the internal mixer. During rubber mixing, compressed air is injected into the mixing chamber to agitate the ethanol gas and water vapor, making it easier for them to be extracted by the exhaust system above.

[0003] Traditional air injection valves use an externally pushed valve stem. When there is rubber material pressing on the outside, it is difficult to open the air injection port to inject compressed air. They can only be installed on the upper side of the rubber material, resulting in poor overall performance. Utility Model Content

[0004] The purpose of this invention is to provide an air injection valve for a mixer to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a gas injection valve for an internal mixer, comprising:

[0006] The valve body has an internal air intake channel and an air injection chamber that are connected. The air intake channel is located on the right side of the air injection chamber. An air injection hole is provided at the right end of the air intake channel. An air injection port is opened on the upper side of the air injection chamber. A silencer is installed in the air injection port.

[0007] A piston rod structure assembly includes a valve rod nested within an air intake channel. The right end of the valve rod blocks the air injection port, and the left end of the valve rod extends into the air injection chamber where a pressure ring and a piston are connected in sequence.

[0008] A plug, the right side of which is threadedly nested inside the left end port of the air injection chamber, and a spring connecting the plug and the piston.

[0009] Furthermore, a locking knob is threadedly nested on the left end of the side wall of the valve body. The tail end of the locking knob extends into the air injection chamber and abuts against the side wall of the plug. The locking knob locks the plug, preventing it from loosening during use and improving safety.

[0010] Furthermore, an L-shaped sealing ring is provided between the pressure ring and the piston. The L-shaped sealing ring is sleeved on the pressure ring, and the side wall of the L-shaped sealing ring abuts against the inner wall of the air injection chamber. The L-shaped sealing ring enhances the sealing performance of the piston rod structure assembly, prevents gas leakage, and improves airtightness.

[0011] Furthermore, the cross-sectional circle diameter of the valve stem is smaller than that of the air intake channel, allowing the valve stem to move flexibly within the air intake channel, while facilitating the entry of gas into the injection chamber through the gap between the valve stem and the air intake channel.

[0012] Furthermore, the pressure ring and piston are sleeved on the valve stem, and the left end of the valve stem is sequentially threaded with a first nut and a second nut, which enhances the stability of the piston rod structure assembly and prevents loosening during use.

[0013] Furthermore, the air injection hole is provided with a hollow rubber sleeve. The diameter of the left end of the hollow rubber sleeve is larger than the diameter of its right end. The shape of the left inner cavity of the hollow rubber sleeve matches the right end of the valve stem, which enhances the sealing effect between the valve stem end and the air injection hole and ensures the reliability of the seal.

[0014] Furthermore, the hollow rubber sleeve is connected to the valve body by screws, which makes the hollow rubber sleeve securely and stably installed in the air injection hole, while also facilitating installation and disassembly, maintenance and replacement.

[0015] The technical effects and advantages provided by this utility model in the above technical solution are as follows:

[0016] 1. By incorporating a plug, spring, and piston rod structure within the valve body, an internal piston rod pressure structure is formed. This allows for gas injection without requiring excessively high pressure, and the spring-formed one-way valve structure prevents blockage by adhesive material.

[0017] 2. By installing a silencer inside the gas injection port, the noise generated by gas flow is effectively reduced, thus improving the working environment;

[0018] 3. The design of the plug and spring allows for flexible adjustment of the spring pressure, ensuring that the gas inlet can be opened under a certain gas pressure. The locking knob can lock the plug, preventing it from loosening during use and improving safety.

[0019] 4. The air injection valve of this internal mixer is simple and convenient to assemble, easy to install and disassemble, and easy to maintain and replace. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0021] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0022] Figure 2 This is a schematic diagram of the piston rod structure assembly of this utility model;

[0023] Figure 3 This is a schematic diagram of the piston of this utility model.

[0024] Explanation of reference numerals in the attached figures:

[0025] 1. Valve body; 2. Air inlet channel; 3. Air injection chamber; 4. Air injection hole; 5. Air injection port; 6. Silencer; 7. Valve stem; 8. Pressure ring; 9. Piston; 10. First nut; 11. Second nut; 12. Plug; 13. Spring; 14. Locking knob; 15. L-shaped sealing ring; 16. Hollow rubber sleeve. Detailed Implementation

[0026] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0027] This utility model provides, for example Figures 1 to 3 The gas injection valve for a personal mixer shown includes:

[0028] Valve body 1, the inside of valve body 1 is provided with an air inlet channel 2 and an air injection chamber 3 connected to each other. The air inlet channel 2 is located on the right side of the air injection chamber 3. An air injection hole 4 is provided at the right end of the air inlet channel 2. An air injection port 5 is opened on the upper side of the air injection chamber 3. A silencer 6 is installed in the air injection port 5.

[0029] The piston rod structure assembly includes a valve rod 7, which is nested within the air intake channel 2. The right end of the valve rod 7 blocks the air injection hole 4, and the left end of the valve rod 7 extends into the air injection chamber 3, where a pressure ring 8 and a piston 9 are connected in sequence. An L-shaped sealing ring 15 is provided between the pressure ring 8 and the piston 9. The L-shaped sealing ring 15 is sleeved on the pressure ring 8, and the side wall of the L-shaped sealing ring 15 abuts against the inner wall of the air injection chamber 3. The L-shaped sealing ring 15 enhances the sealing performance of the piston rod structure assembly, prevents gas leakage, and improves airtightness.

[0030] The plug 12 has its right thread nested inside the left end port of the air injection chamber 3. A spring 13 connects the plug 12 and the piston 9. A locking knob 14 is nested inside the left end of the side wall of the valve body 1. The tail end of the locking knob 14 extends into the air injection chamber 3 and abuts against the side wall of the plug 12. The locking knob 14 locks the plug 12 to prevent it from loosening during use and improves safety.

[0031] The diameter of the cross-sectional circle of the valve stem 7 is smaller than that of the cross-sectional circle of the air intake channel 2, which allows the valve stem 7 to move flexibly within the air intake channel 2, while facilitating the entry of gas into the air injection chamber 3 through the gap between the valve stem 7 and the air intake channel 2.

[0032] The pressure ring 8 and piston 9 are sleeved on the valve stem 7. The left end of the valve stem 7 is threaded with the first nut 10 and the second nut 11 in sequence, which enhances the stability of the piston rod structure assembly and prevents loosening during use.

[0033] The air injection port 4 is equipped with a hollow rubber sleeve 16. The diameter of the left end of the hollow rubber sleeve 16 is larger than that of its right end. The shape of the left inner cavity of the hollow rubber sleeve 16 matches the right end of the valve stem 7, which enhances the sealing effect between the end of the valve stem 7 and the air injection port 4 and ensures the reliability of the seal. The hollow rubber sleeve 16 is connected to the valve body 1 by screws, so that the hollow rubber sleeve 16 is installed firmly and stably in the air injection port 4, and is easy to install and disassemble, and convenient for maintenance and replacement.

[0034] In this utility model, when installing the gas injection valve of the internal mixer, firstly, the L-shaped sealing ring 15 is fitted onto the pressure ring 8, then the pressure ring 8 and piston 9 are fitted onto the valve stem 7 in sequence, and then the first nut 10 and the second nut 11 are threaded onto it in sequence to realize the overall assembly of the piston rod structure assembly. Then, the hollow rubber sleeve 16 is installed in the gas injection hole 4 of the valve body 1 by screws, and then the piston rod structure assembly is installed into the valve body 1. The valve stem 7 of the piston rod structure assembly is inserted into the air inlet channel 2 in the valve body 1. The pressure ring 8 and piston 9 are nested in the gas injection chamber 3 of the valve body 1. Then, the spring 13 is installed, and the plug 12 is threaded into the port of the gas injection chamber 3. The pressure of the spring 13 is adjusted by rotating the plug 12 to ensure that the gas injection port 5 can be opened under a certain gas pressure. Finally, the locking knob 14 is tightened to lock the plug 12 to prevent the plug 12 from loosening during use. In the initial state, the pressure ring 8 and piston 9 are located between the gas injection port 5 and the air inlet channel 2.

[0035] When this internal mixer's air injection valve is installed on the internal mixer, compressed air is injected through the air injection port 4 of the valve body 1. The compressed air first pushes the valve rod 7 to open the air injection port 4, and then the compressed air enters the air injection chamber 3 through the air intake channel 2. Then it pushes the pressure ring 8, which drives the entire piston rod structure assembly to move, thereby squeezing the spring 13. This causes the pressure ring 8 and the piston 9 to move towards the plug 12 and pass through the air injection port 5, so that the air injection port 5 is connected to the air intake channel 2 through the air injection chamber 3. The compressed air enters the mixing chamber through the air injection port 5, agitating the ethanol gas and water vapor, and blowing them above the rubber compound for easy extraction by the air extraction system.

[0036] The gas injection valve of this internal mixer adopts a piston rod internal pressure structure, which can inject gas without using excessive pressure. It also forms a one-way valve structure through spring 13, which is not afraid of the rubber material clogging it. At the same time, a silencer 6 is installed in the gas injection port 5, which effectively reduces the noise generated by gas flow and improves the working environment. The overall assembly is simple and convenient, easy to install and disassemble, and easy to maintain and replace.

[0037] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. An internal mixer gas injection valve characterized by, include: The valve body (1) has an air inlet channel (2) and an air injection chamber (3) connected inside. The air inlet channel (2) is located on the right side of the air injection chamber (3). The right end of the air inlet channel (2) is provided with an air injection hole (4). An air injection port (5) is opened on the upper side of the air injection chamber (3). A silencer (6) is installed in the air injection port (5). The piston rod structure assembly includes a valve rod (7), which is nested in the air intake channel (2). The right end of the valve rod (7) blocks the air injection hole (4), and the left end of the valve rod (7) extends into the air injection chamber (3) where a pressure ring (8) and a piston (9) are connected in sequence. A plug (12) is threaded on the right side and nested in the left end port of the air injection chamber (3). A spring (13) is connected between the plug (12) and the piston (9).

2. An injection valve for an internal mixer according to claim 1, characterized in that: The valve body (1) has a locking knob (14) threadedly nested on the left side wall. The tail end of the locking knob (14) extends into the air injection chamber (3) and abuts against the side wall of the plug (12).

3. An injection valve for an internal mixer according to claim 1, characterized in that: An L-shaped sealing ring (15) is provided between the pressure ring (8) and the piston (9). The L-shaped sealing ring (15) is sleeved on the pressure ring (8), and the side wall of the L-shaped sealing ring (15) abuts against the inner wall of the air injection chamber (3).

4. An injection valve for an internal mixer according to claim 1, characterized in that: The diameter of the cross-sectional circle of the valve stem (7) is smaller than the diameter of the cross-sectional circle of the air intake channel (2).

5. An injection valve for an internal mixer according to claim 1, characterized in that: The pressure ring (8) and piston (9) are sleeved on the valve stem (7), and the left end of the valve stem (7) is threaded with a first nut (10) and a second nut (11) in sequence.

6. An injection valve for an internal mixer according to claim 1, characterized in that: The air injection hole (4) is provided with a hollow rubber sleeve (16). The diameter of the left end port of the hollow rubber sleeve (16) is larger than the diameter of its right end port. The shape of the left inner cavity of the hollow rubber sleeve (16) matches the right end of the valve stem (7).

7. An internal mixer gas injection valve according to claim 6, characterized in that: The hollow rubber sleeve (16) is connected to the valve body (1) by screws.

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