Emergency relief safety device for surge tank

Abstract

The utility model provides a kind of buffer tank emergency discharge safety device, including tank body, the bottom of the tank body is provided with mushroom pole, the bottom of the tank body is fixedly provided with conical bottom, the middle part of the conical bottom is equipped with discharge port, the bottom gap of the mushroom pole passes through discharge port and is fixedly connected with sealing plate, the mushroom pole is equipped with the supporting spring located above discharge port, door type water scraping frame is provided in the tank body, the top of the door type water scraping frame is fixedly connected with positioning shaft, the positioning shaft is set and both rotationally sealed cooperation for the top of tank body.In the utility model, the door type water scraping frame that can rotate is arranged in the tank body, when the door type water scraping frame rotates, the rubber scraping strip one and rubber scraping strip two thereon can quickly scrape the liquid adhered on the inner wall of the tank body, accelerate liquid downflow, improve water scraping efficiency, by setting servo motor for controlling type water scraping frame rotation, so that the water scraping operation of the inner wall of the tank body is more labor-saving and convenient.

Description

Technical Field

[0001] This utility model relates to the field of buffer tank liquid discharge technology, specifically a buffer tank emergency discharge safety device. Background Technology

[0002] In vacuum systems used in chemical production, a buffer tank is usually installed before the vacuum pump. Liquid often accumulates in the vacuum buffer tank. If the tank becomes too full, it will affect the efficiency of the vacuum buffer tank, reduce the working stability of the vacuum system, and may even cause the liquid to rush into the vacuum pump, damaging the mechanical components of the vacuum pump.

[0003] The utility model patent with publication number CN220705875U discloses a vacuum buffer tank liquid discharge device, including a buffer tank body, fixed side seats on both sides of the buffer tank body, an inner wall cleaning device at the bottom of the buffer tank body, a liquid inlet pipe fixedly connected to the front end face of the buffer tank body, a guide pipe fixedly connected to the bottom of the buffer tank body, and a sealing top cover installed at the bottom of the buffer tank body. The surface of the sealing top cover is threadedly connected to a discharge protection mechanism. The specification states that when the buffer tank is nearly full of liquid, if more liquid continues to enter, the mushroom rod will be opened under water pressure to discharge the liquid, thus avoiding safety accidents caused by increased water pressure inside the tank. In other words, emergency discharge of liquid is achieved by squeezing the mushroom rod with water pressure. This emergency discharge function avoids safety accidents caused by excessive pressure inside the tank.

[0004] The aforementioned existing technology fulfills the function of emergency discharge, but its internal structure for cleaning the inner wall has defects. This structure mainly includes a threaded abutment, a scraper ring, and a cover. The threaded abutment is a through-screw-fit connection, and the bottom of the threaded abutment is connected to the scraper ring via a support rod. Rotating the threaded abutment controls the up-and-down movement of the scraper ring, which pushes the accumulated liquid on the inner wall of the tank downwards. This method of cleaning attached liquid has the problem of low cleaning efficiency. Moreover, the threaded abutment and the cover are through-screw-fitted, and the screwing of the threaded abutment is controlled by a handle, which results in high labor intensity for the operator.

[0005] Therefore, this utility model provides an emergency discharge safety device for a buffer tank. Utility Model Content

[0006] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide an emergency discharge safety device for buffer tanks to solve the problems mentioned in the background technology. This utility model not only meets the emergency discharge safety function, but also has the advantages of more efficient and labor-saving cleaning of the liquid adhering to the inner wall.

[0007] To achieve the above objectives, this utility model provides the following technical solution: an emergency discharge safety device for a buffer tank, comprising a tank body, a mushroom-shaped rod at the bottom of the tank body, a conical bottom fixedly disposed at the bottom of the tank body, a discharge port at the center of the conical bottom, a bottom gap of the mushroom-shaped rod passing through the discharge port and fixedly connected to a sealing plate, a support spring sleeved on the mushroom-shaped rod above the discharge port, a gate-shaped wiper frame disposed inside the tank body, a positioning shaft fixedly connected to the top of the gate-shaped wiper frame, the positioning shaft passing through the top of the tank body and the two rotating in a sealed fit.

[0008] Furthermore, the gate-shaped wiper includes a gate-shaped rod and rubber wiper strips bonded to both sides of the gate-shaped rod, wherein the rubber wiper strips are in contact with the inner peripheral wall of the tank.

[0009] Furthermore, the bottom of the portal-shaped rod is fixedly connected to an inner inclined rod located inside the conical bottom, and the lower end face of the inner inclined rod is bonded with a rubber scraper that contacts the inner wall of the conical bottom.

[0010] Furthermore, the top of the tank is a detachable flange cover, and a positioning sleeve fitted outside the positioning shaft is fixedly connected to the middle of the top of the flange cover. A bearing and a sealing assembly are provided between the positioning sleeve and the positioning shaft.

[0011] Furthermore, a servo motor is fixedly connected to the top wall of the flange cover via a slotted frame, and the output shaft of the servo motor is fixedly connected to the top of the positioning shaft.

[0012] Furthermore, a fixing rod is provided at the top of the mushroom rod, and a sliding sleeve is fitted on the top of the fixing rod. A screw rod is fixedly connected to the bottom of the gate-shaped rod and screwed to the top of the sliding sleeve. A baffle located below the sliding sleeve is fixedly connected to the fixing rod.

[0013] Furthermore, guide shafts are welded to both ends of the baffle, and a guide tube sleeved on the outside of the guide shaft is fixedly connected to the outer wall of the sliding sleeve through an ear plate.

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

[0015] 1. In this utility model, a rotatable gate-shaped wiper is provided inside the tank. When the gate-shaped wiper rotates, the rubber scraper one and rubber scraper two on it can quickly scrape off the liquid adhering to the inner wall of the tank, accelerate the liquid flow downward, and improve the wiping efficiency. By setting a servo motor for controlling the rotation of the wiper, the wiping operation of the inner wall of the tank becomes more labor-saving and convenient.

[0016] 2. In this utility model, by setting a sliding sleeve, a screw and a fixing rod, the mushroom rod descends in a short stroke to control the opening of the discharge port. The gate-shaped wiper can continue to rotate and wipe water, thereby accelerating the flow rate of the liquid on the inner wall of the cone bottom, making the discharge of accumulated liquid more thorough and efficient. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of an emergency discharge safety device for a buffer tank according to the present invention;

[0018] Figure 2 for Figure 1 A diagram at the bottom;

[0019] Figure 3 for Figure 2 A magnified diagram of the central "a".

[0020] In the diagram: 1. Tank body; 11. Conical bottom; 111. Discharge port; 12. Flange cover; 121. Positioning sleeve; 122. Channel frame; 2. Mushroom rod; 21. Fixing rod; 211. Baffle; 2111. Guide shaft; 3. Sealing plate; 4. Support spring; 5. Portal-shaped scraper frame; 51. Portal rod; 511. Inner inclined rod; 5111. Rubber scraper blade two; 512. Screw; 52. Rubber scraper blade one; 6. Positioning shaft; 7. Servo motor; 8. Sliding sleeve; 81. Guide tube. Detailed Implementation

[0021] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0022] Please see Figures 1 to 3 This utility model provides a technical solution: an emergency discharge safety device for a buffer tank, including a tank body 1, a mushroom rod 2 at the bottom of the tank body 1, an inlet pipe fixedly connected to the outer wall of the tank body 1 near the top, a conical bottom 11 fixedly provided at the bottom of the tank body 1, a discharge port 111 opened in the middle of the conical bottom 11, the bottom gap of the mushroom rod 2 passing through the discharge port 111 and fixedly connected to a sealing plate 3, a support spring 4 sleeved on the mushroom rod 2 above the discharge port 111, the support spring 4 elastically compresses the top cover on the mushroom rod 2, so that the sealing plate 3 compresses the bottom of the conical bottom 11 and seals the discharge port 111, wherein the sealing plate 3 includes a bottom plate and a sealing gasket adhered to the bottom plate, the top of the bottom plate and the bottom end of the mushroom rod 2 are fixedly connected, and the sealing gasket ensures the sealing of the discharge port 111.

[0023] In this technical solution, a gate-shaped wiper frame 5 is provided inside the tank body 1. A positioning shaft 6 is fixedly connected to the top of the gate-shaped wiper frame 5. The positioning shaft 6 is set through the top of the tank body 1 and the two are rotated and sealed together. When the positioning shaft 6 rotates, the gate-shaped wiper frame 5 can rotate and quickly scrape off the liquid adhering to the inner wall of the tank body 1. The liquid will quickly gather and flow down into the conical bottom 11. Specifically, the gate-shaped wiper frame 5 includes a gate-shaped rod 51 and rubber scraper strips 52 bonded to both sides of the gate-shaped rod 51. The rubber scraper strips 52 are in contact with the inner peripheral wall of the tank body 1. The middle part of the top of the gate-shaped rod 51 is fixedly connected to the bottom of the positioning shaft 6. When the mushroom rod 2 descends to the point where the sealing plate 3 is far from the discharge port 111, the liquid inside the conical bottom 11 will be discharged through the gap between the mushroom rod 2 and the discharge port 111. In order to ensure that the gap between the mushroom rod 2 and the discharge port 111 is uniform, two guide shafts can be welded to the bottom outside the conical bottom 11. Then, a connecting plate is welded to the outer wall of the sealing plate 3. A limiting sleeve is welded to one end of the connecting plate and fitted outside the guide shaft. The limiting sleeve and the guide shaft can be fitted with a clearance fit. In use, a flow guide pipe is welded to the bottom outside the conical bottom 11. The limiting sleeve, guide shaft and discharge port 111 are all located inside the flow guide pipe. The flow guide pipe is used to guide and drain the liquid.

[0024] In this embodiment, an inner inclined rod 511 located inside the conical base 11 is fixedly connected to the bottom of the portal rod 51. A rubber scraper 5111, which contacts the inner wall of the conical base 11, is bonded to the lower end face of the inner inclined rod 511. The rubber scraper 5111 scrapes the liquid from the inner conical wall of the conical base 11, thereby accelerating the rapid flow of liquid down the inner conical wall of the conical base 11 and bringing it closer to the discharge port 111. A third rubber scraper can be bonded to the top wall of the portal rod 51 as needed to scrape away a small amount of adhering liquid from the top of the tank 1.

[0025] Furthermore, the top of the tank body 1 is a removable flange cover 12. The flange cover 12 is fixedly connected to the connecting flange at the top opening of the tank body 1 by bolts. During installation, a sealing ring is placed between the flange cover 12 and the connecting flange. A positioning sleeve 121, which is fitted outside the positioning shaft 6, is fixedly connected to the middle of the top of the flange cover 12. A bearing and a sealing assembly are provided between the positioning sleeve 121 and the positioning shaft 6. The sealing assembly can be a common sealing sleeve, sealing ring, or other sealing structure suitable for rotating pairs to prevent leakage. It should be noted that an electromagnetic pressure relief valve and a pressure sensor are installed on the flange cover 12. The electromagnetic pressure relief valve is electrically connected to an external programmable logic controller (PLC), thereby allowing the opening and closing of the electromagnetic pressure relief valve to adjust the pressure inside and outside the tank body 1 as needed.

[0026] In this embodiment, a servo motor 7 is fixedly connected to the top wall of the flange cover 12 via a slotted frame 122. The output shaft of the servo motor 7 is fixedly connected to the top of the positioning shaft 6. The servo motor 7 is used in conjunction with an external programmable controller (PLC) to facilitate precise control of the number of rotations and rotation speed of the positioning shaft 6.

[0027] In this embodiment, a fixed rod 21 is provided at the top of the mushroom-shaped rod 2, and a sliding sleeve 8 is sleeved on the top of the fixed rod 21. The sliding sleeve 8 and the fixed rod 21 are fitted with a clearance fit. A screw 512 is fixedly connected to the bottom of the portal-shaped rod 51 and screwed to the top of the sliding sleeve 8. Thus, when the portal-shaped rod 51 rotates, it can drive the screw 512 to rotate. When the screw 512 rotates, it can use the screwing action to control the short-stroke lifting and lowering of the sliding sleeve 8. A baffle 211 located below the sliding sleeve 8 is fixedly connected to the fixed rod 21. When the sliding sleeve 8 descends to contact the baffle 211 and continues to descend, the baffle 211 will push the mushroom-shaped rod 2 to descend through the fixed rod 21. At this time, the drain port 111 can be controlled to open for drainage. In order to ensure the stability of the lifting and lowering of the sliding sleeve 8, guide shafts 2111 can be welded to both ends of the baffle 211. A guide tube 81 sleeved outside the guide shaft 2111 is fixedly connected to the outer wall of the sliding sleeve 8 through an ear plate. The guide tube 81 and the guide shaft 2111 are fitted with a clearance fit.

[0028] Working principle: When liquid discharge is required, the operation is initiated through the control panel electrically connected to the programmable controller to activate the liquid discharge mode. At this time, the servo motor 7 starts and drives the positioning shaft 6 to rotate, the gantry rod 51 rotates, and the rubber scraper 1 52 and rubber scraper 2 5111 scrape the inner wall of the tank 1 and the inner wall of the conical bottom 11 respectively. The liquid on the inner wall of the tank 1 and the conical bottom 11 will accelerate to accumulate and flow down by its own weight. During this process, the screw 512 rotates and uses the screwing action to push the sliding sleeve 8 down. Then, the baffle 211 and the fixed rod 21 push the mushroom rod 2 down, the support spring 4 is compressed, the sealing plate 3 falls, and the discharge port 111 is exposed. At this time, the liquid accumulated in the conical bottom 11 will be discharged through the discharge port 111. After the discharge is completed, the positioning shaft 6 is reversed to reset. When the tank 1 is too full and needs to be drained urgently, the excessive liquid in the tank 1 will exert pressure on the mushroom rod 2, causing the mushroom rod 2 to be squeezed and descend, and the discharge port 111 will open to drain the water safely.

[0029] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A buffer tank emergency discharge safety device, comprising a tank body (1), wherein a mushroom-shaped rod (2) is provided at the bottom of the tank body (1), characterized in that, The bottom of the tank (1) is fixedly provided with a conical bottom (11), and a discharge port (111) is opened in the middle of the conical bottom (11). The bottom gap of the mushroom rod (2) passes through the discharge port (111) and is fixedly connected with a sealing plate (3). A support spring (4) is sleeved on the mushroom rod (2) above the discharge port (111). A gate-shaped scraper (5) is provided inside the tank (1). A positioning shaft (6) is fixedly connected to the top of the gate-shaped scraper (5). The positioning shaft (6) is set through the top of the tank (1) and the two are rotated and sealed together.

2. The emergency discharge safety device for a buffer tank according to claim 1, characterized in that: The gate-shaped wiper frame (5) includes a gate-shaped rod (51) and rubber wiper strips (52) bonded to both sides of the gate-shaped rod (51). The rubber wiper strips (52) are in contact with the inner peripheral wall of the tank (1).

3. The emergency discharge safety device for a buffer tank according to claim 2, characterized in that: The bottom of the portal rod (51) is fixedly connected to an inner inclined rod (511) located inside the conical bottom (11), and the lower end face of the inner inclined rod (511) is bonded with a rubber scraper (5111) that contacts the inner wall of the conical bottom (11).

4. The emergency discharge safety device for a buffer tank according to claim 2, characterized in that: The top of the tank (1) is a detachable flange cover (12). A positioning sleeve (121) is fixedly connected to the middle of the top of the flange cover (12) and sleeved outside the positioning shaft (6). A bearing and sealing assembly are provided between the positioning sleeve (121) and the positioning shaft (6).

5. The emergency discharge safety device for a buffer tank according to claim 4, characterized in that: The top wall of the flange cover (12) is fixedly connected to a servo motor (7) via a slotted frame (122), and the output shaft of the servo motor (7) is fixedly connected to the top of the positioning shaft (6).

6. The emergency discharge safety device for a buffer tank according to claim 2, characterized in that: The top of the mushroom rod (2) is provided with a fixing rod (21), and the top of the fixing rod (21) is fitted with a sliding sleeve (8). The bottom of the gate rod (51) is fixedly connected with a screw (512) that is screwed into the bottom and the top of the sliding sleeve (8). A baffle (211) located below the sliding sleeve (8) is fixedly connected to the fixing rod (21).

7. The emergency discharge safety device for a buffer tank according to claim 6, characterized in that: The baffle (211) has guide shafts (2111) welded to both ends, and the outer wall of the sliding sleeve (8) is fixedly connected to a guide tube (81) sleeved outside the guide shaft (2111) through an ear plate.

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