An automatic liquid level control device for a reaction kettle

Abstract

This utility model relates to the field of automatic liquid level control technology for reaction vessels, specifically disclosing an automatic liquid level control device for reaction vessels, including a vessel body. Liquid level control mechanisms are provided at both the left and right ends of the vessel body. Each liquid level control mechanism includes an inlet pipe and an outlet pipe connected to the outer wall of the vessel body. Sleeves are provided on the outer walls of both the inlet and outlet pipes. Filter screens are fixedly connected to opposite sides of the two sleeves. Drainage pipes are provided on the outer walls of both sleeves. The design allows some material to flow into a transparent container after being filtered through the filter screens. This avoids solid impurities clogging the liquid level conduction channel and ensures that the liquid level in the transparent container remains dynamically consistent with the liquid level inside the vessel. A float rises and falls synchronously with the liquid level. When the set liquid level is reached, the float lifts the protective plate and triggers the pressure sensor, thereby stopping the feeding. This ensures that the detected liquid level accurately reflects the actual situation inside the vessel, effectively solving the problem of detection distortion caused by impurities clogging traditional devices.

Description

Technical Field

[0001] This utility model relates to the field of automatic control technology for liquid level in reaction vessels, and specifically discloses an automatic control device for liquid level in reaction vessels. Background Technology

[0002] As a core reaction vessel in chemical, pharmaceutical, and food processing industries, the feeding stage is a critical starting point in the production process. The precise control of the feeding amount directly reflects and determines the subsequent material reaction efficiency, product quality stability, and production operation safety through the liquid level.

[0003] However, some existing reactor level control devices use a "conduit + external level gauge" structure. Material residue is easily accumulated at the connection between the conduit and the reactor body. The residue will gradually adhere to the inner wall of the conduit and form a blockage, causing the level gauge to be unable to receive the real liquid level signal in the reactor in real time. This causes the liquid level to continuously deviate from the target range, which seriously affects the stability of the reaction process.

[0004] On the other hand, most existing devices are single-unit setups lacking redundancy and backup designs. During long-term continuous production, if a unit fails due to sensor malfunction, pipeline blockage, or valve jamming, it must be immediately shut down for repairs. This not only interrupts the production process, resulting in significant waste of time and materials, but also risks causing unreacted materials in the reactor to deteriorate, further increasing production costs and handling difficulties. Therefore, an automatic liquid level control device for the reaction vessel is needed to solve these problems. Summary of the Invention

[0005] This invention proposes an automatic liquid level control device for a reaction vessel. The device achieves dynamic and consistent liquid level detection through the design of material flowing into a transparent tank after filtration. Combined with a float and pressure sensor, it accurately controls the feeding, solving the detection distortion problem caused by impurities clogging in traditional devices. The device's filter screen adopts a detachable design, which can be completely replaced and cleaned by simply removing the bolts. It can quickly restore operation, avoid the decline in liquid level conduction efficiency, reduce the impact of maintenance on production, and lower costs.

[0006] This utility model is implemented as follows: an automatic liquid level control device for a reaction vessel includes a vessel body, and liquid level control mechanisms are provided at both the left and right ends of the vessel body.

[0007] The liquid level control mechanism includes an inlet pipe and an outlet pipe connected to the outer wall of the vessel. Both the inlet and outlet pipes have sleeves on their outer walls. A filter screen is fixedly connected to the opposite side of each sleeve. A drain pipe is provided on the outer wall of each sleeve. A transparent bucket is fixedly connected to the other end of each drain pipe. An electric actuator is installed at the upper end of the transparent bucket. The output end of the electric actuator passes through the transparent bucket and is fixedly connected to a pressure sensor. A protective plate is fixedly connected to the lower end of the pressure sensor. A float ball is installed inside the transparent bucket, and graduation lines are provided on the outer wall of the transparent bucket.

[0008] As a preferred embodiment of the automatic liquid level control device for a reaction vessel according to this utility model, a motor is installed at the upper end of the vessel body, the output end of the motor passes through the vessel body and is fixedly connected to a drive rod, and two symmetrically distributed scrapers are fixedly connected to the outer wall of the drive rod.

[0009] As a preferred embodiment of the automatic liquid level control device for a reaction vessel according to this utility model, the outer wall of the filter screen is arc-shaped, and the arc-shaped surface is on the same arc-shaped surface as the inner wall of the vessel body, and the scraper is in contact with the vessel body.

[0010] In a preferred embodiment of the automatic liquid level control device for a reaction vessel according to this utility model, the feed pipe, sleeve, and drain pipe are detachably connected by bolts, and the lower end of the transparent barrel is detachably connected to a sealing base plate by bolts.

[0011] As a preferred embodiment of the automatic liquid level control device for a reaction vessel according to this utility model, both ends of the sleeve are fixedly connected with first rectangular sealing rings, and the two first rectangular sealing rings abut against the outer walls of the feed pipe and the drain pipe, respectively.

[0012] As a preferred embodiment of the automatic liquid level control device for a reaction vessel according to this utility model, a second rectangular sealing ring is provided between the sealing bottom plate and the transparent tank.

[0013] As a preferred embodiment of the automatic liquid level control device for a reaction vessel according to this utility model, the lower end of the vessel body is connected to a discharge pipe with a valve body.

[0014] The beneficial effects of this utility model are:

[0015] (1) The device is designed so that some materials are filtered through a filter screen and then flow into a transparent bucket. This not only avoids solid impurities from clogging the liquid level conduction channel, but also keeps the liquid level in the transparent bucket and the liquid level in the vessel dynamically consistent. The float rises and falls synchronously with the liquid level. When the set liquid level is reached, the float lifts the protective plate and triggers the pressure sensor, thereby stopping the feeding. This ensures that the detected liquid level can truly reflect the actual situation in the vessel, effectively solving the problem of detection distortion caused by impurities in traditional devices, and providing reliable data support for subsequent precise control.

[0016] (2) The filter screen adopts a detachable design. When impurities accumulate, the sleeve and filter screen can be removed and cleaned or replaced by simply removing the connecting bolts. The operation is convenient and time-saving, which can quickly restore the normal operation of the device, avoid the decrease in liquid level conduction efficiency caused by filter screen blockage, reduce the impact of maintenance on production, and reduce production costs. Attached Figure Description

[0017] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0018] Figure 1 This is an overall structural diagram of an automatic liquid level control device for a reaction vessel according to the present invention.

[0019] Figure 2 This is a cross-sectional view of the overall structure of this utility model.

[0020] Figure 3 This is a top view of the structure of this utility model.

[0021] Figure 4 This is a partial structural diagram of the present invention.

[0022] The markings in the diagram are: 1. Kettle body; 2. Feed pipe; 3. Sleeve; 4. Drain pipe; 5. Transparent bucket; 6. Discharge pipe; 7. Electric actuator; 8. Pressure sensor; 9. Scraper; 10. Sealing base plate; 11. Motor; 12. Protective plate; 13. Float; 14. Filter screen; 15. Drive rod. Detailed Implementation

[0023] The present invention will be further described below with reference to the accompanying drawings and specific embodiments to aid in understanding its content. Unless otherwise specified, the methods used in this invention are conventional methods; the raw materials and apparatus used, unless otherwise specified, are conventional commercially available products.

[0024] Please see Figure 1-4 An automatic liquid level control device for a reaction vessel includes a vessel body 1, with liquid level control mechanisms provided at both the left and right ends of the vessel body 1.

[0025] The liquid level control mechanism includes an inlet pipe 2 and an outlet pipe 6 connected to the outer wall of the vessel body 1. Both the inlet pipe 2 and the outlet pipe 6 are provided with sleeves 3 on their outer walls. Filter screens 14 are fixedly connected to the opposite sides of the two sleeves 3. Drainage pipes 4 are provided on the outer walls of the two sleeves 3. A transparent barrel 5 is fixedly connected to the other end of the two drainage pipes 4. An electric actuator 7 is installed at the upper end of the transparent barrel 5. The output end of the electric actuator 7 passes through the transparent barrel 5 and is fixedly connected to a pressure sensor 8. A protective plate 12 is fixedly connected to the lower end of the pressure sensor 8. A float ball 13 is provided inside the transparent barrel 5. Scale lines are provided on the outer wall of the transparent barrel 5.

[0026] In this embodiment: when material is added into the vessel 1, some of the material inside the vessel 1 will flow into the sleeve 3. After the solid impurities in the material are filtered out by the filter screen 14 fixed on the outer wall of the sleeve 3, it will flow smoothly into the transparent bucket 5 through the guide pipe 4. Finally, the liquid level in the transparent bucket 5 and the liquid level in the vessel 1 will be dynamically consistent, ensuring that the detected liquid level can truly reflect the actual situation inside the vessel.

[0027] The float 13 inside the transparent tank 5 will rise and fall synchronously with the liquid level in the tank: when the material in the vessel 1 is added to the set target liquid level, the float 13 inside the transparent tank 5 rises to the corresponding height, just touching and lifting the protective plate 12 at the lower end of the pressure sensor 8; after the protective plate 12 is subjected to force, it transmits the pressure to the pressure sensor 8 above. The pressure sensor 8 detects the preset pressure threshold signal and then triggers the control command to stop the feeding pipe 2 from feeding, thus completing the precise feeding control.

[0028] The scale lines on the outer wall of the transparent tank 5 allow for direct observation of the real-time liquid level, facilitating manual verification and anomaly investigation. By rotating the electric actuator 7 installed at the top of the transparent tank 5, the pressure sensor 8 can be moved up and down, thereby flexibly adjusting the trigger height of the pressure sensor 8 to adapt to the target liquid level value required by different production processes.

[0029] When impurities accumulate on the filter screen 14 due to long-term filtration, the sleeve 3 and filter screen 14 can be removed as a whole by disassembling the connecting bolts between the feed pipe 2, sleeve 3 and drain pipe 4 for quick cleaning or replacement, thus avoiding impurities from clogging the liquid level conduction efficiency.

[0030] As a technical optimization of this utility model, a motor 11 is installed at the upper end of the vessel body 1. The output end of the motor 11 passes through the vessel body 1 and is fixedly connected to a drive rod 15. Two symmetrically distributed scrapers 9 are fixedly connected to the outer wall of the drive rod 15.

[0031] In this embodiment: the motor 11 can drive the drive rod 15 and the scraper 9 to rotate, and the scraper 9 can stir the material inside the vessel 1.

[0032] As a technical optimization of this utility model, the outer wall of the filter screen 14 is arc-shaped, and the arc-shaped surface is on the same arc-shaped surface as the inner wall of the vessel body 1, and the scraper 9 is in contact with the inner wall of the vessel body 1.

[0033] In this embodiment, the scraper 9 adheres to the vessel body 1, which can clean the impurities on the inner wall of the vessel body 1 and the inner wall of the filter screen 14.

[0034] As a technical optimization of this utility model, the feed pipe 2, sleeve 3 and drain pipe 4 are detachably connected by bolts, and the lower end of the transparent barrel 5 is detachably connected to a sealing base plate 10 by bolts.

[0035] In this embodiment: the sealing base plate 10 can seal the transparent bucket 5, and at the same time facilitate the removal and maintenance of the float 13 inside the transparent bucket 5.

[0036] As a technical optimization of this utility model, the left and right ends of the sleeve 3 are fixedly connected with first rectangular sealing rings, and the two first rectangular sealing rings abut against the outer walls of the feed pipe 2 and the drain pipe 4 respectively.

[0037] In this embodiment, the two first rectangular sealing rings abut against the outer walls of the feed pipe 2 and the drain pipe 4, respectively, which can conveniently seal the junction of the sleeve 3, the feed pipe 2 and the drain pipe 4.

[0038] As a technical optimization of this utility model, a second rectangular sealing ring is provided between the sealing base plate 10 and the transparent barrel 5.

[0039] In this embodiment, the connection between the sealing base plate 10 and the transparent barrel 5 can be sealed by the second rectangular sealing ring.

[0040] As a technical optimization of this utility model, the lower end of the vessel body 1 is connected to a discharge pipe with a valve body.

[0041] In this embodiment, the discharge pipe can conveniently discharge the material inside the vessel 1.

[0042] The working principle and usage process of this utility model are as follows: Two sets of liquid level control mechanisms are symmetrically arranged at the left and right ends of the vessel body 1. When material is added to the vessel body 1, some of the material inside the vessel body 1 will flow into the sleeve 3. After the solid impurities in the material are filtered out by the filter screen 14 fixed on the outer wall of the sleeve 3, it will flow smoothly into the transparent bucket 5 through the guide pipe 4. Finally, the liquid level in the transparent bucket 5 and the liquid level in the vessel body 1 are kept dynamically consistent, ensuring that the detected liquid level can truly reflect the actual situation inside the vessel.

[0043] The float 13 inside the transparent tank 5 rises and falls synchronously with the liquid level inside the tank: when the material in the vessel 1 is added to the set target liquid level, the float 13 inside the transparent tank 5 rises to the corresponding height, just touching and lifting the protective plate 12 at the lower end of the pressure sensor 8; after the protective plate 12 is subjected to force, it transmits the pressure to the pressure sensor 8 above. The pressure sensor 8 detects the preset pressure threshold signal and then triggers an external control command (existing technology) to stop the feeding pipe 2 from adding material, thus completing precise feeding control.

[0044] The scale lines on the outer wall of the transparent tank 5 allow for direct observation of the real-time liquid level, facilitating manual verification and anomaly investigation. By rotating the electric actuator 7 installed at the top of the transparent tank 5, the pressure sensor 8 can be moved up and down, thereby flexibly adjusting the trigger height of the pressure sensor 8 to adapt to the target liquid level value required by different production processes.

[0045] During daily operation, the two sets of liquid level control mechanisms work synchronously, and the liquid level signals they detect can be compared and verified with each other to further improve detection accuracy. When impurities accumulate on the filter screen 14 due to long-term filtration, the sleeve 3 and the filter screen 14 can be removed as a whole by disassembling the connecting bolts between the feed pipe 2, the sleeve 3 and the drain pipe 4 for quick cleaning or replacement, so as to avoid impurities clogging and affecting the liquid level conduction efficiency.

[0046] In the description of this utility model, it should be understood that the terms "left", "right", "up", "down", "top", "bottom", "front", "back", "inner", "outer", "back", "middle", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0047] However, the above are merely specific embodiments of this utility model and should not be construed as limiting the scope of implementation of this utility model. Therefore, any substitution of equivalent components or equivalent changes and modifications made in accordance with the scope of protection of this utility model should still fall within the scope of the claims of this utility model.

Claims

1. A kind of reaction kettle liquid level automatic control device, including kettle body (1), it is characterized in that: Liquid level control mechanisms are provided at both the left and right ends of the vessel body (1); The liquid level control mechanism includes a feed pipe (2) and a discharge pipe (6) connected to the outer wall of the vessel body (1). The outer walls of the feed pipe (2) and the discharge pipe (6) are provided with sleeves (3). A filter screen (14) is fixedly connected to the opposite side of the two sleeves (3). A drain pipe (4) is provided on the outer wall of the two sleeves (3). The other end of the two drain pipes (4) is fixedly connected to a transparent bucket (5). An electric push rod (7) is installed at the upper end of the transparent bucket (5). The output end of the electric push rod (7) passes through the transparent bucket (5) and is fixedly connected to a pressure sensor (8). A protective plate (12) is fixedly connected to the lower end of the pressure sensor (8). A float ball (13) is provided inside the transparent bucket (5). A scale line is provided on the outer wall of the transparent bucket (5).

2. The automatic liquid level control device for a reaction vessel according to claim 1, characterized in that: A motor (11) is installed at the upper end of the vessel body (1). The output end of the motor (11) passes through the vessel body (1) and is fixedly connected to a drive rod (15). Two symmetrically distributed scrapers (9) are fixedly connected to the outer wall of the drive rod (15).

3. The automatic liquid level control device for a reaction vessel according to claim 2, characterized in that: The outer wall of the filter screen (14) is arc-shaped, and the arc-shaped surface is on the same arc-shaped surface as the inner wall of the vessel body (1). The scraper (9) is attached to the vessel body (1).

4. The automatic liquid level control device for a reaction vessel according to claim 1, characterized in that: The feed pipe (2), sleeve (3) and drain pipe (4) are detachably connected by bolts, and the lower end of the transparent bucket (5) is detachably connected to a sealing base plate (10) by bolts.

5. The automatic liquid level control device for a reaction vessel according to claim 1, characterized in that: The sleeve (3) is fixedly connected to the left and right ends with first rectangular sealing rings, and the two first rectangular sealing rings abut against the outer walls of the feed pipe (2) and the drain pipe (4) respectively.

6. The automatic liquid level control device for a reaction vessel according to claim 4, characterized in that: A second rectangular sealing ring is provided between the sealing base plate (10) and the transparent barrel (5).

7. The automatic liquid level control device for a reaction vessel according to claim 1, characterized in that: The lower end of the vessel body (1) is connected to a discharge pipe with a valve body.

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