Pneumatic inner plug type kettle bottom valve

Abstract

The utility model provides a pneumatic inner plug type kettle bottom valve which comprises a kettle bottom valve body, a shell connecting piece, a piston shell and an air pump piece, one side of the kettle bottom valve body is provided with an integrally-formed piston rod part, and the piston rod part and the shell connecting piece are integrally formed. A valve hole channel communicated with a valve cavity of the kettle bottom valve body is formed in the middle of the valve element piece, a piston connecting rod is arranged at the other end of the valve element piece, one end of the piston connecting rod extends into the piston rod part, and the end of the piston connecting rod is located in the piston shell and connected with a piston driving block. The piston driving block can push the piston connecting rod to move, the front valve element part moves to the notch of the valve cavity, the valve hole channel of the valve element part is pushed to be communicated with the valve cavity of the kettle bottom valve body, discharging operation of materials is achieved, and compared with rotation of a traditional ball valve, abrasion can be reduced, and the sealing effect can be improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of bottom valves of kettles, and relates to a pneumatic inner plug type bottom valve of a kettle. Background Technique

[0002] The bottom valve of a kettle is an important component of a reaction kettle. It is installed at the bottom of the reaction kettle and is used to control the discharge of materials in the reaction kettle. The application number CN202320725374.4 discloses a bottom valve of a reaction kettle, which includes a valve body, a valve stem, a flange plate and a ball valve. The valve body has a flow channel for the medium to pass through. The flange plate is installed at the top of the valve body, and a connecting through hole is made on the flange plate. The valve stem drives the ball valve to rotate in the valve body to form the cut-off and connection between the connecting through hole and the flow channel. A guiding inclined surface is made on the pore wall of the connecting through hole, and the included angle between the guiding inclined surface and the horizontal plane where the orifice of the connecting through hole is located is 5° to 30°. The valve stem is inclined and installed on the valve body. Compared with the prior art, in this bottom valve of the reaction kettle, the inclination angle of the guiding inclined surface is small, which can prevent the materials in the reaction process of the reaction kettle from entering the connecting through hole and causing deposition, making the material reaction more thorough; the valve stem is inclined and installed on the valve body, which is convenient to install a runner or a motor at the end of the valve stem, preventing interference between the valve stem and the flange plate and making the structure more reasonable.

[0003] The disadvantages of the above-mentioned disclosed bottom valve are as follows: A runner or a motor is installed at the end of the valve stem to realize the driving of the ball valve inside the valve body, that is, the rotation of the ball valve. However, during the rotation of the ball valve, in order to ensure sealing, it is necessary to ensure a small assembly gap between the ball valve and the inner part of the valve cavity, which results in large wear of the ball valve during rotation. For this reason, we design a pneumatic inner plug type bottom valve. Summary of the Invention

[0004] The purpose of the utility model is to provide a pneumatic inner plug type bottom valve of a kettle to solve the problems raised in the above background technique.

[0005] The purpose of the utility model can be realized by the following technical solutions: A pneumatic inner plug type bottom valve of a kettle, which includes a bottom valve body of a kettle, an outer shell connecting piece, a piston outer shell and an air pump piece. One side of the bottom valve body of the kettle is provided with an integrally formed piston rod part, and the piston rod part is integrally formed with the outer shell connecting piece. The outer shell connecting piece is connected with the piston outer shell, and the air pump piece is arranged at the air inlet end of the piston outer shell. A valve core piece is arranged inside the valve cavity of the bottom valve body of the kettle. One end of the valve core piece is provided with a front valve core part. A valve hole channel communicating with the valve cavity of the bottom valve body of the kettle is opened in the middle of the valve core piece. The other end of the valve core piece is provided with a piston connecting rod. One end of the piston connecting rod extends into the inside of the piston rod part and the end part is located inside the piston outer shell and is connected with a piston driving block.

[0006] In the above-mentioned pneumatic inner plug type bottom valve of the reactor, a ventilation hole is provided at the top end of the piston housing. A head plate connected to the piston housing is provided at the top end of the ventilation hole. A rubber hose is provided at the top end of the head plate. A sealing plug is provided at one end of the rubber hose. An air inlet valve port is provided at one end of the sealing plug. The purpose of such a setting is to enable the compressed air generated by the air pump component to enter the rubber hose through the ventilation hole, and the rubber hose introduces the compressed air to the air inlet valve port of the sealing plug, and enters the interior of the reactor through the air inlet valve port, which can have an aeration and stirring effect on the liquid inside the reactor during the reaction stage, improving the versatility of use.

[0007] In the above-mentioned pneumatic inner plug type bottom valve of the reactor, an opening part is provided at the top end of the piston driving block. The opening length of the opening part is equal to the length of the ventilation hole and the opening part corresponds to the ventilation hole. The purpose of such a setting is to enable the gas to slowly enter the interior of the rubber hose, avoiding insufficient air pressure inside the piston housing caused by too fast gas entry.

[0008] In the above-mentioned pneumatic inner plug type bottom valve of the reactor, a sealing flange is provided at the top end of the bottom valve body of the reactor. A sealing retaining ring is provided at the through-hole step at the top end of the sealing flange. Positioning bolts are provided at the four mounting parts at the top end of the sealing flange. The purpose of such a setting is to have a good positioning and installation effect, enabling the bottom valve body to have good connection accuracy and connection firmness when connected to the bottom of the reactor.

[0009] In the above-mentioned pneumatic inner plug type bottom valve of the reactor, a limit sealing retaining ring is provided at the inner side of the piston rod part near the valve cavity of the bottom valve body of the reactor. A plugging rubber plug is provided on one side of the limit sealing retaining ring. The plugging rubber plug is connected to the piston connecting rod part located on the piston rod part. The purpose of such a setting is to enable the piston connecting rod to have good sealing effect and position limiting effect during the movement inside the piston rod part, avoiding an increase in the gap between the valve cavity of the bottom valve body and the valve core component caused by too large an amplitude of the piston connecting rod.

[0010] In the above-mentioned pneumatic inner plug type bottom valve of the reactor, a reactor body connecting plate is provided in the middle of the sealing plug. The purpose of such a setting is to have a good connection effect, facilitating the positioning and installation of the sealing plug near the air inlet hole of the reactor, and enabling the sealing plug to have good connection strength after installation.

[0011] Compared with the prior art, the advantages of the pneumatic internal plug type bottom valve of the utility model are as follows: by arranging a front valve core part at one end of the valve core part, a valve hole channel communicating with the valve cavity of the bottom valve body is opened in the middle of the valve core part, a piston connecting rod is arranged at the other end of the valve core part, one end of the piston connecting rod extends into the inside of the piston rod part and the end part is located inside the piston housing and is connected with a piston driving block. By compressing air with an air pump part, the piston driving block can push the piston connecting rod to move, and the front valve core part moves to the notch part of the valve cavity, pushing the valve hole channel of the valve core part to communicate with the valve cavity of the bottom valve body, realizing the feeding operation of materials. Compared with the rotation of the traditional ball valve, it can reduce wear and improve the sealing effect; by arranging an opening part at the top end of the piston driving block, a sealing head plate connected with the piston housing is arranged at the top end of the air vent hole, a sealing plug is arranged at the top end of the sealing head plate, and an air inlet valve port is arranged at one end of the sealing plug; it can enable a part of the compressed air generated by the air pump part to enter the rubber hose through the air vent hole, and the compressed air is introduced into the air inlet valve port of the sealing plug by the rubber hose and enters the inside of the reaction kettle through the air inlet valve port, which can have an aeration and stirring effect on the liquid inside the reaction kettle during the reaction stage and improve the versatility of use; the opening length of the opening part is equal to the length of the air vent hole and the opening part corresponds to the air vent hole, so that the gas slowly enters the inside of the rubber hose, avoiding insufficient air pressure inside the piston housing caused by too fast gas entry. Brief Description of the Drawings

[0012] Figure 1 is a three-dimensional structural schematic diagram of a pneumatic internal plug type bottom valve of the utility model.

[0013] Figure 2 is an internal structural schematic diagram of the bottom valve body of a pneumatic internal plug type bottom valve of the utility model.

[0014] Figure 3 is a three-dimensional structural schematic diagram of the sealing plug and the air inlet valve port of a pneumatic internal plug type bottom valve of the utility model.

[0015] Figure 4 is a sectional structural schematic diagram of the piston housing of a pneumatic internal plug type bottom valve of the utility model.

[0016] In the figure, 1. bottom valve body; 2. housing connecting piece; 3. piston housing; 4. sealing flange; 5. sealing retaining ring; 6. positioning bolt; 7. sealing head plate; 8. rubber hose; 9. air pump part; 10. piston rod part; 11. valve core part; 12. front valve core part; 13. valve hole channel; 14. limit sealing retaining ring; 15. plugging rubber plug; 16. piston connecting rod; 17. sealing plug; 18. air inlet valve port; 19. kettle body connecting plate; 20. piston driving block; 21. opening part; 22. air vent hole. Detailed Description of the Invention

[0017] The following are specific embodiments of the present utility model, in combination with the accompanying drawings, to further describe the technical solutions of the present utility model, but the present utility model is not limited to these embodiments.

[0018] As Figure 1 , Figure 2 , Figure 3 and Figure 4 shown, a pneumatic inner plug type bottom valve of the present utility model;

[0019] Embodiment: The bottom valve includes a bottom valve body 1, an outer shell connecting piece 2, a piston outer shell 3 and an air pump member 9. A sealing flange 4 is provided at the top end of the bottom valve body 1. A sealing retaining ring 5 is provided at the through-hole step at the top end of the sealing flange 4. Positioning bolts 6 are provided at four mounting portions at the top end of the sealing flange 4. A piston rod portion 10 is integrally formed on one side of the bottom valve body 1, and the piston rod portion 10 is integrally formed with the outer shell connecting piece 2. The outer shell connecting piece 2 is connected to the piston outer shell 3, and the air pump member 9 is provided at the air inlet end of the piston outer shell 3. A valve core member 11 is provided inside the valve cavity of the bottom valve body 1. A front valve core portion 12 is provided at one end of the valve core member 11. A valve hole channel 13 communicating with the valve cavity of the bottom valve body 1 is provided in the middle of the valve core member 11. A piston connecting rod 16 is provided at the other end of the valve core member 11. One end of the piston connecting rod 16 extends into the inside of the piston rod portion 10, and the end portion is located inside the piston outer shell 3 and is connected to a piston driving block 20.

[0020] Embodiment Two: As Figure 3 and Figure 4 shown, a vent hole 22 is provided at the top end of the piston outer shell 3. A head plate 7 connected to the piston outer shell 3 is provided at the top end of the vent hole 22. A rubber hose 8 is provided at the top end of the head plate 7. A sealing plug 17 is provided at one end of the rubber hose 8. An air inlet valve port 18 is provided at one end of the sealing plug 17. A kettle body connecting plate 19 is provided in the middle of the sealing plug 17. An opening portion 21 is provided at the top end of the piston driving block 20. The opening length of the opening portion 21 is equal to the length of the vent hole 22, and the opening portion 21 corresponds to the vent hole 22.

[0021] When the air pump member 9 compresses air, part of the compressed air can be introduced into the inside of the rubber hose 8 through the opening portion 21 and the vent hole 22, which can not only avoid the phenomenon of excessive air pressure inside the piston outer shell 3, but also increase functionality. When the air inlet valve port 18 of the sealing plug 17 is connected to the air inlet hole of the reaction kettle, the compressed air enters the inside of the reaction kettle through the air inlet valve port 18, and can have an aeration stirring effect on the liquid inside the reaction kettle during the reaction stage, improving the multifunctionality of use.

[0022] In this technical solution, as Figure 2As shown in the figure, in order to ensure good sealing and position-limiting effects during the movement of the piston connecting rod 16 inside the piston rod part 10, and to prevent the gap between the valve cavity of the bottom kettle valve body 1 and the valve core part 11 from increasing due to excessive movement of the piston connecting rod 16, a limit sealing retaining ring 14 is provided at the inner side of the piston rod part 10 near the valve cavity of the bottom kettle valve body 1. A plugging rubber plug 15 is provided on one side of the limit sealing retaining ring 14, and the plugging rubber plug 15 is connected to the piston connecting rod 16 part located in the piston rod part 10.

[0023] Working principle: During installation, the bottom kettle valve body 1 can be quickly and firmly installed at the bottom of the reaction kettle through the sealing flange 4, the sealing retaining ring 5, and the four positioning bolts 6. When it is necessary to adjust the opening degree of the bottom kettle valve body 1, the air pump part 9 compresses air, increasing the internal pressure of the piston housing 3, enabling the piston driving block 20 to push the piston connecting rod 16 to move. The front valve core part 12 moves to the notch part of the valve cavity, pushing the valve hole channel 13 of the valve core part 11 to communicate with the valve cavity of the bottom kettle valve body 1, realizing the material discharging operation. Compared with the rotation of the traditional ball valve, it can reduce wear and improve the sealing effect.

[0024] In this technical solution, an opening part 21 is provided at the top of the piston driving block 20. The opening length of the opening part 21 is equal to the length of the air vent hole 22 and the opening part 21 corresponds to the air vent hole 22. With this setting, when the air pump part 9 compresses air, part of the compressed air can be introduced into the inside of the rubber hose 8 through the opening part 21 and the air vent hole 22. This can not only avoid the phenomenon of excessive internal air pressure in the piston housing 3, but also increase functionality. When the air inlet valve port 18 of the sealing plug 17 is connected to the air inlet hole of the reaction kettle, the compressed air enters the inside of the reaction kettle through the air inlet valve port 18, which can have an aeration and stirring effect on the liquid inside the reaction kettle during the reaction stage, improving the multi-functionality of use.

[0025] On the above basis, the amount of compressed air introduced is adjusted by the relative opening difference between the opening part 21 and the air vent hole 22. When the opening part 21 completely covers the air vent hole 22, the opening degree is the largest. At this time, the valve hole channel 13 of the valve core part 11 pushing the valve cavity of the bottom kettle valve body 1 has reached the maximum degree of opening for material falling.

[0026] In the initial state, the valve core part 11 of this technical solution is connected to the valve cavity of the bottom kettle valve body 1 with good sealing performance.

[0027] The content not described in detail in this specification belongs to the prior art well-known to those skilled in the art. The specific embodiments described herein are merely illustrative of the spirit of the present utility model. Those skilled in the art to which the present utility model pertains may make various modifications or supplements to the described specific embodiments or use similar means for substitution, but will not deviate from the spirit of the present utility model or exceed the scope defined by the appended claims.

Claims

1. A pneumatic inner plug type kettle bottom valve, comprising a kettle bottom valve body (1), a shell connecting member (2), a piston shell (3) and an air pump member (9), characterized in that: An integrally formed piston rod portion (10) is provided on one side of the kettle bottom valve body (1), and the piston rod portion (10) is integrally formed with the shell connecting piece (2), the shell connecting piece (2) is connected to the piston shell (3), and the air pump component (9) is arranged at the air inlet end of the piston shell (3), a valve core component (11) is arranged inside the valve cavity of the kettle bottom valve body (1), one end of the valve core component (11) is provided with a front valve core portion (12), a valve hole channel (13) connected to the valve cavity of the kettle bottom valve body (1) is opened in the middle of the valve core component (11), and a piston connecting rod (16) is provided at the other end of the valve core component (11), one end of the piston connecting rod (16) extends to the inside of the piston rod portion (10) and the end is located inside the piston shell (3) and is connected to a piston driving block (20).

2. A pneumatic inner plug type kettle bottom valve according to claim 1, characterized in that: The top end of the piston housing (3) is provided with an air vent (22), the top end of the air vent (22) is provided with a head plate (7) connected to the piston housing (3), the top end of the head plate (7) is provided with a rubber hose (8), one end of the rubber hose (8) is provided with a sealing plug (17), and one end of the sealing plug (17) is provided with an intake valve port (18).

3. A pneumatic inner plug type kettle bottom valve according to claim 2, characterized in that: An opening (21) is provided at the top end of the piston driving block (20), and the opening length of the opening (21) is equal to the length of the air vent (22), and the opening (21) corresponds to the air vent (22).

4. The pneumatic inner plug type kettle bottom valve according to claim 1, characterized in that: A sealing flange (4) is arranged at the top of the kettle bottom valve body (1), a sealing retaining ring (5) is arranged at the through hole step at the top of the sealing flange (4), and positioning bolts (6) are arranged at the four mounting parts at the top of the sealing flange (4).

5. The pneumatic inner plug type kettle bottom valve according to claim 1, characterized in that: A limit sealing ring (14) is arranged on the inner side of the piston rod portion (10) near the valve cavity of the kettle bottom valve body (1), and a sealing rubber plug (15) is arranged on one side of the limit sealing ring (14). The sealing rubber plug (15) is connected to a piston connecting rod (16) located on the piston rod portion (10).

6. A pneumatic inner plug type kettle bottom valve according to claim 2, characterized in that: A kettle body connecting plate (19) is arranged in the middle of the sealing plug (17).

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