Anti-blocking column valve mechanism of bulking machine and bulking machine

Abstract

The utility model discloses a kind of anti-blocking column valve mechanisms of bulking machine, comprising: the valve core being movable along vertical direction, the first conical surface being provided with towards the axial direction of the valve core and inclined in the bottom end of the valve core;Reverse flow valve bushing, including mutually nested inner bushing and outer bushing, gap for steam passing between the reverse flow valve bushing and the valve core is equipped, the top end of the inner bushing is equipped with second conical surface, the bottom end of the outer bushing is equipped with through-hole, accommodating cavity is equipped between the bottom end of the outer bushing and the bottom end of the outer bushing, valve ball is equipped in the accommodating cavity, when the valve core moves downward, steam enters the accommodating cavity by the gap, and material is forced into the through-hole. When steam is passed, material blockage in accommodating cavity can be effectively cleaned and steam is passed, and when steam is stopped, material backflow can be effectively prevented, the present scheme is simple and reliable, and can be directly applied to existing equipment, and is beneficial to large-scale promotion.

Description

Technical Field

[0001] This utility model relates to the field of extruder accessories, and specifically to an anti-clogging column valve mechanism for an extruder and an extruder. Background Technology

[0002] In the feed production and processing industry, the extrusion process is a key step in improving feed quality. During extrusion, steam is introduced into the extrusion chamber through steam pipes to increase the moisture and temperature of the material, improve its plasticity, and make it easier to extrude and shape. However, in actual production, because the extrusion chamber is in a high-pressure environment, when the steam supply needs to be interrupted, the high pressure inside the chamber can cause the material to flow back into the steam pipes.

[0003] This phenomenon can lead to material blockages in steam pipelines. This is especially true in feed formulations containing high protein or high fiber, where the material easily solidifies and adheres tightly to the inner walls of the pipeline, potentially clogging critical components such as steam nozzles. Pipeline blockages not only affect the normal delivery of steam, leading to unstable feed quality in subsequent production, but also significantly increase equipment maintenance costs.

[0004] Feed production companies often need to frequently shut down their plants to clean pipelines. The cleaning process is tedious and time-consuming, requiring a significant investment of manpower and resources. More seriously, clogged materials left in the pipelines for extended periods can become moldy, contaminating subsequently produced feed and posing a potential threat to animal health.

[0005] Therefore, it is necessary to propose a new type of anti-clogging column valve mechanism for extruders to solve the above problems. Utility Model Content

[0006] Purpose of the utility model: In order to overcome the shortcomings of the existing technology, this utility model provides an anti-clogging column valve mechanism for an extruder.

[0007] Technical solution: A clog-prevention column valve mechanism for an extruder, comprising:

[0008] A valve core that can move in a vertical direction, wherein the bottom end of the valve core is provided with a first conical surface inclined toward the valve core axis, and the bottom end of the first conical surface is provided with a valve core ejection part;

[0009] A counterflow valve bushing is provided around the bottom end of the valve core. A gap for steam to pass through is provided between the counterflow valve bushing and the valve core. The counterflow valve bushing includes an inner bushing and an outer bushing that are nested together. The top end of the inner bushing has a second conical surface for abutting against the first conical surface. The bottom end of the outer bushing has a through hole for communicating with the expansion chamber. A receiving cavity is provided between the bottom ends of the outer bushing and the outer bushing. A valve ball is provided in the receiving cavity. When the valve core moves downward, the steam enters the receiving cavity through the gap and forces the material into the through hole.

[0010] Furthermore, the bottom end of the inner liner is provided with a third conical surface for fitting against the surface of the valve ball. When the valve core moves upward, the material enters the receiving cavity through the through hole and pushes the valve ball to fit tightly against the third conical surface, thereby sealing the receiving cavity.

[0011] Furthermore, a valve sleeve is fitted on the upper part of the valve core, a valve cap is fixedly connected above the valve sleeve, and a first sealing ring is provided between the valve cap and the valve sleeve.

[0012] Furthermore, the upper end of the valve core passes through the valve cap, and a handwheel is provided at the top of the valve core, which is used to drive the valve core to move up and down.

[0013] An extruder, comprising:

[0014] The puffing cavity is equipped with an anti-clogging column valve mechanism for the puffing machine as described above on its outer side.

[0015] Beneficial effects: The anti-clogging column valve mechanism of this utility model for extruders is designed by setting a receiving cavity in the valve body and setting a valve ball in the receiving cavity. The steam is opened or closed by the up and down movement of the valve core. When steam is introduced, it can effectively clear the material blockage in the receiving cavity and introduce steam. When the steam is stopped, it can effectively prevent the material backflow. This solution has a simple and reliable structure and can be directly applied to existing equipment, which is conducive to large-scale promotion. Attached Figure Description

[0016] Appendix Figure 1 This is a cross-sectional schematic diagram of an embodiment of the anti-clogging column valve mechanism for an extruder of this utility model;

[0017] Appendix Figure 2 for Figure 1 An enlarged schematic diagram of point A of the anti-clogging column valve mechanism of the extruder shown;

[0018] Appendix Figure 3 for Figure 2 The diagram shows the closed state of the anti-clogging column valve mechanism of the extruder. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0020] It should be noted that the descriptions involving "first," "second," etc., in this utility model are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope claimed by this utility model.

[0021] See Figure 1-3 An embodiment of the anti-clogging column valve mechanism for the extruder of this utility model is shown, comprising: a valve core 4 and a counterflow valve bushing. The valve core 4 is configured to move vertically, and the bottom end of the valve core 4 is provided with a first conical surface 41 inclined toward the axial direction of the valve core 4, and the bottom end of the first conical surface 41 is provided with a valve core ejector portion 42.

[0022] A counterflow valve bushing is provided around the bottom end of the valve core 4, and the counterflow valve bushing includes an inner bushing 8 and an outer bushing 10 that are nested together. A gap is provided between the counterflow valve bushing and the valve core 4 to allow steam to pass through. The top end of the inner bushing 8 is provided with a second conical surface 81 for abutting against the first conical surface 41. The bottom end of the outer bushing 10 is provided with a through hole 11 for communicating with the expansion chamber. A receiving cavity 91 is provided between the bottom ends of the outer bushing 10 and the bottom end of the outer bushing 10. A valve ball 9 is provided in the receiving cavity 91. When the valve core 4 moves downward, the steam enters the receiving cavity 91 through the gap, forcing the material into the through hole 11, thus completing the cleaning of the material in the receiving cavity 91 and avoiding material retention that would cause waste and pollution.

[0023] Thus, by setting the valve body into the receiving cavity 91 and setting the valve ball 9 inside the receiving cavity 91, the steam can be opened or closed by the up and down movement of the valve core 4. When steam is introduced, it can effectively clear the material blockage in the receiving cavity 91 and introduce steam. When the steam is stopped, it can effectively prevent the material backflow. This solution has a simple and reliable structure and can be directly applied to existing equipment, which is conducive to large-scale promotion.

[0024] In some preferred embodiments, the bottom end of the inner liner 8 is provided with a third conical surface 82 for conforming to the surface of the valve ball 9. When the valve core 4 moves upward, the material enters the receiving cavity 91 through the through hole 11 and pushes the valve ball 9 to press against the third conical surface 82, thereby sealing the receiving cavity 91 and preventing the material from leaving the receiving cavity 91 and entering the upper area of ​​the valve core 4, thus avoiding contamination.

[0025] In some preferred embodiments, a valve sleeve 6 is fitted onto the upper part of the valve core 4, and a valve cap 3 is fixedly connected above the valve sleeve 6. A first sealing ring 2 is provided between the valve cap 3 and the valve sleeve 6 to further prevent material leakage. The valve sleeve 6 is also provided with a steam inlet 101.

[0026] In some preferred embodiments, the upper end of the valve core 4 passes through the valve cap 3, and a handwheel 1 is provided at the top of the valve core 4, the handwheel 1 being used to drive the valve core 4 to move up and down. In other embodiments, a drive mechanism can also be used to drive the upper end of the valve core 4; such structural changes still fall within the protection scope of this utility model.

[0027] This utility model provides an extruder, including: an extrusion chamber 20, and an anti-blocking column valve mechanism as described above is provided on the outside of the extruder 20.

[0028] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A clog-prevention column valve mechanism for an extruder, characterized in that, include: A valve core that can move in a vertical direction, wherein the bottom end of the valve core is provided with a first conical surface inclined toward the valve core axis, and the bottom end of the first conical surface is provided with a valve core ejection part; A counterflow valve bushing is provided around the bottom end of the valve core. A gap for steam to pass through is provided between the counterflow valve bushing and the valve core. The counterflow valve bushing includes an inner bushing and an outer bushing that are nested together. The top end of the inner bushing has a second conical surface for abutting against the first conical surface. The bottom end of the outer bushing has a through hole for communicating with the expansion chamber. A receiving cavity is provided between the bottom ends of the outer bushing and the outer bushing. A valve ball is provided in the receiving cavity. When the valve core moves downward, the steam enters the receiving cavity through the gap and forces the material into the through hole.

2. The anti-clogging column valve mechanism for the extruder according to claim 1, characterized in that: The bottom end of the inner liner is provided with a third conical surface for fitting the surface of the valve ball. When the valve core moves upward, the material enters the receiving cavity through the through hole and pushes the valve ball to fit tightly against the third conical surface, thereby sealing the receiving cavity.

3. The anti-clogging column valve mechanism for the extruder according to claim 1, characterized in that: A valve sleeve is fitted on the upper part of the valve core, and a valve cap is fixedly connected above the valve sleeve. A first sealing ring is provided between the valve cap and the valve sleeve.

4. The anti-clogging column valve mechanism for the extruder according to claim 3, characterized in that: The upper end of the valve core passes through the valve cap, and a handwheel is provided at the top of the valve core. The handwheel is used to drive the valve core to move up and down.

5. An extruder, characterized in that, include: The puffing chamber is provided with a plurality of anti-clogging column valve mechanisms for the puffing machine as described in any one of claims 1-4 on its outer side.

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