Exhaust device for dec dosing system

Abstract

The utility model provides a kind of exhaust device for DEC feeding system, it is related to DEC feeding system field, the scheme used is: including exhaust stem, the exhaust stem is communicated with the hose of DEC feeding system;Exhaust valve, the exhaust valve includes valve body and valve core, the valve body is communicated with the exhaust stem, the air inlet end of the valve body and the sealing end profile cooperation of the valve core, the valve core is movably arranged in the valve body interior, the valve core can make valve body and the exhaust stem conductive or close;Adjusting assembly, the adjusting end of the adjusting assembly is abutted with the valve core, the adjusting assembly can drive the valve core to move.The utility model can realize the air pressure balance of hose and outside, avoid blind plate difficult to open or open to cause damage to operator.

Description

Technical Field

[0001] This utility model relates to the field of DEC feeding systems, and in particular to an exhaust device for DEC feeding systems. Background Technology

[0002] In the protein separation and purification process, the DEC (Diatomaceous Earth Concentrate) feeding system, as a key device for the precise addition of filter aids, bears the heavy responsibility of ensuring filtration efficiency and product quality.

[0003] The DEC feeding system mainly consists of a vacuum pump unit, a material storage tank, stainless steel flexible hose delivery pipelines, multi-point control valves, and pressure sensing devices. Its typical process flow is as follows: When the feeding program is started, the vacuum pump draws the filter aid from the storage tank using negative pressure. After impurities are removed by a Y-type filter, it is delivered to the designated usage point on the production line through a flexible hose connected by clamps. Each usage point is equipped with an independent control valve, and operators can control the filter aid flow rate by adjusting the valve opening. During system operation, pressure sensors monitor pressure changes in the pipeline in real time and feed them back to the central control room via a PLC controller. During the cleaning phase, the system switches to compressed air purging mode, using clean compressed air to discharge residual liquid from the pipeline system.

[0004] Although the DEC feeding system is designed with sealing and controllability in mind, two prominent safety hazards still exist in actual production: First, the risk of negative pressure adsorption. When the valve at the point of use fails to close properly due to wear, foreign object obstruction, or aging of the sealing ring, a continuous negative pressure will be generated in the local pipeline. At this time, when the operator opens the blind flange to connect the separator, a large axial pulling force is required to overcome the negative pressure suction, resulting in high labor intensity. Second, the hazard of positive pressure impact. If the compressed air valve is not completely closed after cleaning, the residual moisture will form a momentary high-pressure zone under the push of the airflow. If the operator opens the blind flange without fully depressurizing, the high-pressure airflow carrying droplets will form a jet stream, which will be harmful to the operator. Utility Model Content

[0005] To address the technical problem of premature failure of hydraulic cylinders in loading station valves in the prior art, this utility model provides an exhaust device for the DEC feeding system, which can achieve pressure balance between the hose and the outside air, avoiding the blind flange being difficult to open or causing damage to the operator when it is opened.

[0006] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows: an exhaust device for a DEC feeding system, including an exhaust rod, the exhaust rod being connected to a hose of the DEC feeding system; an exhaust valve, the exhaust valve including a valve body and a valve core, the valve body being connected to the exhaust rod, the air inlet end of the valve body and the sealing end of the valve core being shaped to fit together, the valve core being movably disposed inside the valve body, the valve core being able to enable the valve body to be connected to or closed with the exhaust rod; and an adjustment component, the adjustment component abutting against the adjustment end of the valve core, the adjustment component being able to drive the valve core to move.

[0007] This invention, by adjusting the coordination of components, valve core, and valve body, enables the opening and closing of the hose with the outside world. When open, it can achieve pressure balance between the hose and the external atmosphere, changing the negative pressure or high positive pressure state in the hose to make it equal to the external pressure. This makes it easier for operators to open the blind flange on the hose and avoids high-pressure jet formation at the moment of opening the blind flange, which could injure the operator.

[0008] Furthermore, the adjustment assembly includes a rotating cap, which is screwed to the air outlet end of the valve body. The rotating cap has an air outlet hole and abuts against the end of the valve core. The spring is sleeved on the valve core, and the two ends of the spring abut against the limiting platform on the inner wall of the valve body and the limiting protrusion on the valve core, respectively.

[0009] This invention, through the cooperation of a rotating cap and a spring, enables the valve core to open and automatically reset. Under the action of the spring, the valve core can always be tightly fitted to the valve body without gaps when closed, thus improving the airtightness of the device and avoiding adverse effects on the system operation.

[0010] Furthermore, the rotating cap is provided with scale lines.

[0011] This invention uses scale lines to allow operators to clearly understand the relationship between the rotation direction and angle of the rotating cap and the gas flow rate, thus avoiding misoperation.

[0012] Furthermore, both the air inlet end of the valve body and the sealing end of the valve core are provided with conical sealing surfaces.

[0013] This invention enhances the sealing performance between the valve body and the valve core through a tapered surface.

[0014] Furthermore, the air inlet end of the exhaust rod is provided with a screw-in connector, which is used to connect to a hose, and a sealing ring is also provided between the air inlet end of the exhaust rod and the connector.

[0015] This invention enhances the airtightness of the connection between the hose and the exhaust rod by using a sealing ring.

[0016] Furthermore, the valve body is screwed to the exhaust rod, and a sealing ring is provided between the valve body and the exhaust rod.

[0017] This invention enhances the sealing performance between the valve body and the exhaust rod through the second sealing ring, forming a double seal with the first sealing ring.

[0018] Furthermore, the rotating cap is provided with an air outlet pipe.

[0019] Furthermore, the vent pipe is threadedly connected to the rotating cap.

[0020] As can be seen from the above technical solutions, this utility model has the following advantages: This utility model provides an exhaust device for a DEC feeding system. By adjusting the components, valve core, and valve body, the device can achieve the opening and closing of the hose with the outside environment. When open, it can achieve pressure balance between the hose and the external atmosphere, changing the negative pressure or high positive pressure state in the hose to make it equal to the external pressure. This facilitates the operator in opening the blind plate on the hose and avoids high-pressure jet formation at the moment of opening the blind plate, which could injure the operator. Through the cooperation of the rotating cap and spring, the valve core can be opened and automatically reset. Under the action of the spring, the valve core can always be tightly fitted with the valve body in the closed state without gaps, improving the airtightness of the device and avoiding adverse effects on the system operation. The scale lines allow the operator to clearly understand the relationship between the rotation direction and angle of the rotating cap and the gas flow rate, avoiding misoperation. The conical surface enhances the airtightness between the valve body and the valve core. The first sealing ring enhances the airtightness of the connection between the hose and the exhaust rod. The second sealing ring enhances the airtightness between the valve body and the exhaust rod, forming a double seal with the first sealing ring. Attached Figure Description

[0021] To more clearly illustrate the technical solution of this utility model, the drawings used in the description will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the structure in the open state according to a specific embodiment of the present invention.

[0023] Figure 2 This is a schematic diagram of the structure in the closed state according to a specific embodiment of the present invention.

[0024] Figure 3 This is a schematic diagram of the rotating cap in a specific embodiment of the present invention. Figure 1 .

[0025] Figure 4This is a schematic diagram of the rotating cap in a specific embodiment of the present invention. Figure 2 .

[0026] In the diagram: 1. Connector; 2. Sealing ring one; 3. Exhaust rod; 4. Sealing ring two; 5. Valve body; 501. Limiting platform; 6. Rotating cap; 601. Cap body; 602. Drive rod; 603. Exhaust hole; 604. Scale line; 605. Cross rod; 7. Valve core; 701. Limiting protrusion; 8. Spring; 9. Sealing surface; 10. Adjustment assembly; 11. Exhaust valve; 12. Exhaust pipe. Detailed Implementation

[0027] To make the objectives, features, and advantages of this utility model more apparent and understandable, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings of the specific embodiments. Obviously, the embodiments described below are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this patent, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this patent.

[0028] like Figure 1 and Figure 2 As shown in the figure, this specific embodiment provides an exhaust device for a DEC feeding system, including an exhaust rod 3, an exhaust valve 11, and an adjustment assembly 10. The exhaust rod 3 is connected to the hose of the DEC feeding system. The exhaust valve 11 includes a valve body 5 and a valve core 7. The valve body 5 is connected to the exhaust rod 3. The air inlet end of the valve body 5 and the sealing end of the valve core 7 are shaped to fit together. In this specific embodiment, both the air inlet end of the valve body 5 and the sealing end of the valve core 7 are provided with a conical sealing surface 9. The valve core 7 is movably disposed inside the valve body 5. The valve core 7 can enable the valve body 5 to be connected to or closed with the exhaust rod 3. The adjustment assembly 10 abuts against the adjustment end of the valve core 7, and the adjustment assembly 10 can drive the valve core 7 to move.

[0029] This specific embodiment, by adjusting the coordination of component 10, valve core 7 and valve body 5, can realize the opening and closing of the hose with the outside world. When open, it can realize the pressure balance between the hose and the outside atmospheric environment, change the state of negative pressure or high positive pressure in the hose, make it equal to the external pressure, facilitate the operator to open the blind plate on the hose and avoid the formation of high pressure jet at the moment of opening the blind plate, which could injure the operator.

[0030] To ensure the airtightness of this device and avoid affecting the normal operation of the feeding system, such as Figures 1 to 4As shown, in this specific embodiment, the adjustment assembly 10 includes a rotating cap 6, which is screwed onto the air outlet end of the valve body 5. The rotating cap 6 has an air outlet 603. The rotating cap 6 abuts against the end of the valve core 7. A spring 8 is sleeved on the valve core 7, and both ends of the spring 8 abut against the limiting platform 501 on the inner wall of the valve body 5 and the limiting protrusion 701 on the valve core 7, respectively. Specifically, the rotating cap 6 includes a cap body 601, inside which a drive rod 602 is provided. The drive rod 602 has an air outlet 603 that penetrates the end of the cap body 601. The inner wall of the cap body 601 has an internal thread that corresponds to the external thread of the air outlet end of the valve body 5. A cross rod 605 is provided at the end of the drive rod 602 that abuts against the valve core 7, ensuring proper contact with the valve core 7. For smooth airflow and contact, in this specific embodiment, when the device is in the closed state, the end of the drive rod 602 is at a small distance from the end of the valve core 7, ensuring that the spring 8 exerts its elastic force on the valve core 7. The rigidity of the spring 8 should be sufficient to prevent compression deformation under the maximum positive pressure of the feeding system. With this setting, under the action of the spring 8, when the drive rod 602 of the rotating cap 6 is not in contact with the end of the valve core 7, the sealing surface 9 of the valve core 7 is tightly attached to the sealing surface 9 of the valve body 5 under the elastic force of the spring 8, resulting in high airtightness and preventing gas leakage from affecting the normal operation of the feeding system. The rotating cap 6 is provided with scale lines 604, which correspond to the markings of "open", "closed", "large", and "small". The scale lines allow the operator to clearly understand the relationship between the rotation direction and rotation angle of the rotating cap 6 and the gas flow rate, avoiding misoperation.

[0031] To further improve the airtightness of this device, such as Figure 1 and Figure 2 As shown, the air inlet end of the exhaust rod 3 is provided with a screw-in connector 1, which is used to connect to a hose. In this specific embodiment, the two are integrated structures. A sealing ring 2 is also provided between the air inlet end of the exhaust rod 3 and the connector 1. The valve body 5 is screwed to the exhaust rod 3, and a sealing ring 4 is provided between the valve body 5 and the exhaust rod 3. Both the sealing ring 2 and the sealing ring 4 are tightened by threads. After this arrangement, the sealing ring 4 and the sealing ring 2 form a double seal.

[0032] like Figure 1 and Figure 2 As shown, further, the rotating cap 6 is provided with an air outlet pipe 12, which is threadedly connected to the rotating cap 6.

[0033] The procedure for using this device is as follows: When balancing the air pressure, rotate the rotating cap 6 to the set position, and the drive rod 602 abuts against the valve core 7, so that the sealing surface 9 of the valve core 7 is a certain distance away from the sealing surface 9 of the valve body 5, forming a gas flow between the exhaust pipe, the valve body 5 and the rotating cap 6, realizing the air pressure balance between the hose and the outside; when you use your finger to sense at the air outlet 12, if you do not feel any suction or blowing, it proves that the balance is complete; rotate the rotating cap 6 in the opposite direction, the valve core 7 returns to its original position, and under the action of the spring 8, the valve core 7 abuts against the valve body 5.

[0034] As can be seen from the above specific embodiments, this utility model has the following beneficial effects: 1. By adjusting the coordination of component 10, valve core 7 and valve body 5, the hose can be opened and closed to the outside world. When open, the pressure balance between the hose and the outside atmospheric environment can be achieved, changing the state of negative pressure or high positive pressure in the hose to make it equal to the external pressure, which makes it easier for the operator to open the blind plate on the hose and avoids high pressure jet at the moment of opening the blind plate, which could injure the operator. 2. Through the cooperation of rotating cap 6 and spring 8, valve core 7 can be opened and automatically reset. Under the action of spring 8, when closed, valve core 7 can always be tightly fitted with valve body 5 without gaps, improving the airtightness of the device and avoiding adverse effects on system operation. 3. The scale lines allow operators to clearly understand the relationship between the rotation direction and angle of the rotating cap 6 and the gas flow rate, thus avoiding misoperation; 4. The sealing performance between the valve body 5 and the valve core 7 is enhanced by using a tapered surface; 5. The sealing performance between valve body 5 and exhaust rod 3 is enhanced by sealing ring 2 4, forming a double seal with sealing ring 1 2; 6. Enhance the airtightness of the connection between the hose and the exhaust rod 3 by using sealing ring 2.

[0035] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An exhaust device for a DEC feeding system, characterized in that, include: The exhaust rod (3) is connected to the hose of the DEC feeding system; An exhaust valve (11) includes a valve body (5) and a valve core (7). The valve body (5) is connected to the exhaust rod (3). The air inlet end of the valve body (5) and the sealing end of the valve core (7) are fitted together. The valve core (7) is movably disposed inside the valve body (5). The valve core (7) enables the valve body (5) to be connected to or closed with the exhaust rod (3). Adjustment component (10) abuts against the adjustment end of valve core (7) and the adjustment component (10) can drive valve core (7) to move.

2. The exhaust device for a DEC feeding system as described in claim 1, characterized in that, The adjustment assembly (10) includes a rotating cap (6), which is screwed to the air outlet end of the valve body (5). The rotating cap (6) is provided with an air outlet hole (603). The rotating cap (6) abuts against the end of the valve core (7). A spring (8) is sleeved on the valve core (7). The two ends of the spring (8) abut against the limiting platform (501) on the inner wall of the valve body (5) and the limiting protrusion (701) on the valve core (7), respectively.

3. The exhaust device for a DEC feeding system as described in claim 2, characterized in that, The rotating cap (6) is provided with scale lines (604).

4. The exhaust device for a DEC feeding system as described in claim 3, characterized in that, The valve body (5) and the valve core (7) are both provided with conical sealing surfaces (9).

5. The venting device for a DEC feeding system as described in any one of claims 1-4, characterized in that, The air intake end of the exhaust rod (3) is provided with a screw-in connector (1), which is used to connect to a hose. A sealing ring (2) is also provided between the air intake end of the exhaust rod (3) and the connector (1).

6. The venting device for a DEC feeding system as described in claim 5, characterized in that, The valve body (5) is screwed to the exhaust rod (3), and a sealing ring (4) is provided between the valve body (5) and the exhaust rod (3).

7. The exhaust device for a DEC feeding system as described in claim 2, characterized in that, The rotating cap (6) is provided with an air outlet pipe (12).

8. The venting device for a DEC feeding system as described in claim 7, characterized in that, The vent pipe (12) is threadedly connected to the rotating cap (6).

Images