Tank seal jet cleaning device

Abstract

The present disclosure provides a sealed jet cleaning device for a storage tank. It is mainly used to solve the problem of dead corners in cleaning when the existing cleaning equipment cleans the storage tank at the tank mouth. It is characterized in that: the device also includes a sealed diverter ball, a loading ring, a guide gear, a drive motor and a tightening stud; the sealed diverter ball is provided with a liquid inlet hole, and a plurality of jet tubes are arranged on the opposite side of the liquid inlet hole; the blocking plate frame serves as a mounting bracket for other components in the device; the loading ring is a circular plate with a large central hole; the sealed diverter ball is installed between the blocking plate frame and the loading ring; the tightening stud is inserted from the outside of the blocking plate frame and connected to the threaded hole of the loading ring; the outer wall of the sealed diverter ball is provided with a gear ring that can mesh with the guide gear, so that when the guide gear rotates, the sealed diverter ball can follow. The solution provided in the present disclosure can achieve dead-angle cleaning of the storage tank with high cleaning efficiency. In addition, there are few driving parts for realizing rotation and swinging, and the manufacturing and maintenance costs are low.

Description

Technical Field

[0001] The content disclosed in this article relates to a cleaning device used in the field of liquid storage tanks, and specifically, to a mechanical device that can perform sealed jet cleaning on the inner wall of the tank. Background Art

[0002] There are a large number of storage tanks in the petroleum, chemical and other industrial fields. These tanks need to be cleaned regularly after being used for a long time. At present, there are some special cleaning machines for oil tanks, such as: a vertical insertion cleaning machine for oil tanks (CN201603730U), a jet cleaning machine (CN202621521U), and an insertion cleaning machine for oil tanks with a sealing ring (CN202290682U). These cleaning machines are installed at the opening flange of the tank, and the cleaning liquid is injected into the tank through the cleaning gun or the high-pressure jet principle is used for cleaning. However, the cleaning guns of these cleaning machines can only rotate on a fixed plane. Due to the angle of the cleaning gun nozzle, they cannot sweep any position in the tank, there are cleaning dead angles, and the cleaning effect is not ideal.

[0003] Some cleaning machines also have cleaning guns equipped with swing mechanisms, such as: side-type cleaning machines for oil tanks (CN201596659U) and large jet tank cleaning machines (CN1593794A). The cleaning guns of these cleaning machines can both rotate and swing, and can sweep most areas inside the tank. However, these cleaning machines are equipped with two sets of driving mechanisms for rotation and swing. The swing mechanism includes cylinders, reversing valves, crank connecting rods, gear sets, ratchets, screws, torsion springs and other components for driving, limiting and positioning. The complex structure leads to high manufacturing and maintenance costs. Summary of the invention

[0004] This specification provides a specific technical solution for a tank sealing jet cleaning device and gives several specific embodiments. The cleaning device provided by these specific embodiments can achieve dead-angle cleaning of the tank with high cleaning efficiency. In addition, there are fewer driving parts for achieving rotation and swinging, and the manufacturing and maintenance costs are lower.

[0005] One or more embodiments of this specification are implemented according to the following schemes:

[0006] First embodiment: A tank sealing jet cleaning device includes a blocking plate frame 1, a sealing diverter ball 14, a loading ring 12 and a tightening stud 8.

[0007] The sealing diverter ball is a hollow stainless steel ball with a smooth outer wall and a liquid inlet hole. A plurality of ejection tubes are arranged on the opposite side of the liquid inlet hole; the liquid inlet hole is used to connect a high-pressure water pipe.

[0008] The blocking plate frame is a circular plate with a first middle matching hole surface, which is used to be installed on the flange of the storage tank and serve as a mounting bracket for other components in the device; a plurality of flange connecting holes and stud holes are processed on the blocking plate frame, and two sealing ring grooves are arranged in the stud holes; the first middle matching hole surface is a conical surface, which is tangent to the spherical surface of the sealing diverter ball, and two sealing ring grooves are arranged on the middle matching hole surface.

[0009] The loading ring is a circular plate with a large central hole, and three threaded holes are processed at the circumferential boss of the plate for connecting the tightening studs.

[0010] The sealing diverter ball is installed between the blocking plate frame and the loading ring.

[0011] The tightening stud is inserted from the outside of the blocking plate frame and connected to the threaded hole of the loading ring.

[0012] Furthermore, for the tank seal jet cleaning device, the optimization scheme is as follows:

[0013] The shooting tube is arranged in the sealing diverter ball according to the following mode, that is,

[0014] On the outer wall on the opposite side of the liquid inlet hole of the sealing diverter ball, a point at a set angle away from the axis of the opening is selected as the jet center, and the jet center area and the jet peripheral area are determined; a plurality of straight jet tubes are arranged in the jet center area, and a curved jet tube is arranged in the jet peripheral area, and the curved jet tube has a curved nozzle section.

[0015] Second embodiment: The tank seal jet cleaning device described above, based on the first embodiment and the optimization scheme, adds technical optimization means: the device also includes a tightening ring 10; the tightening ring is a copper alloy circular plate with a second middle matching hole surface, and a hole for passing the tightening stud is processed at the circumference of the plate of the tightening ring, and the second middle matching hole surface of the tightening ring is a conical surface, which is tangent to the sealing diverter ball surface and is used to tighten the sealing diverter ball.

[0016] The tightening ring is located between the loading ring and the blocking plate frame, and the spherical surface of the sealing diverter ball is in contact with the loading ring and the blocking plate frame respectively; a compression spring 11 is arranged between the tightening ring and the loading ring, and the tightening stud is used to pass through the blocking plate frame, the tightening ring and the loading ring in sequence and lock them.

[0017] The third embodiment: The tank sealing jet cleaning device described above, based on the second embodiment, adds technical optimization means: the device also includes a conical head 4; the conical head has a large head and a small head, the large head is fixedly connected to the outer side surface of the blocking plate frame, and the small head is used to connect the high-pressure water pipe; the inner wall of the conical head and the outer wall of the sealing diverter ball form a liquid supply sealing chamber.

[0018] Furthermore, in this embodiment, for the tank sealing jet cleaning device, an optimization scheme is as follows: the small head and the liquid inlet hole of the sealing diverter ball have the same central axis.

[0019] On the basis of the above three embodiments, after selecting any one of the tank sealing jet cleaning devices and adding the following technical contents, a more optimized implementation scheme can be obtained, specifically:

[0020] The device further comprises a guide gear 18 and a drive motor 3 .

[0021] A gear ring that can mesh with the guide gear is arranged on the outer wall of the sealing diverter ball, so that when the guide gear rotates, the sealing diverter ball can follow the rotation.

[0022] The guide gear includes a gear and two limiting rings, which are installed on the shaft of the driving motor; the limiting ring is used to clamp and limit the gear ring to ensure that the meshing is not misaligned.

[0023] The driving motor is fixed on the blocking plate frame.

[0024] Further improvements:

[0025] The gear ring is wave-shaped;

[0026] Taking a plane perpendicular to the axis of the liquid inlet hole and passing through the center of the sphere as a reference plane, the gear ring is installed on the reference plane and has left and right swing peaks and valleys;

[0027] The gear ring is closed by circulating around the outer wall of the sealing diverter ball.

[0028] The deviation distance of the left and right swing peaks and valleys of the gear ring from the reference plane is determined according to the following restrictive conditions, that is, the swing angle range of the sealing diverter ball is between 15° and 25°; the number of the left and right swing peaks and valleys on the gear ring is between 4 and 6.

[0029] At least one of the above technical solutions adopted in one or more embodiments of this specification can achieve the following beneficial effects: This type of storage tank sealed jet cleaning device has a straight-shooting tube and a curved-shooting tube arranged on a sealed diverter ball, and the sealed diverter ball is driven by a motor to rotate and swing, which can achieve dead-angle cleaning of the storage tank with high cleaning efficiency. There are few driving parts for realizing rotation and swinging, and the manufacturing and maintenance costs are low. By rotating the tightening stud, the tightness of the sealing diverter ball compression ball sealing ring can be adjusted at any time to ensure the spherical sealing effect. This type of cleaning device can be installed and fixed on a storage tank for long-term use, or it can be temporarily installed on a storage tank and removed after cleaning, which has strong practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the embodiments of this specification, the drawings required for use in the embodiments will be briefly introduced below: the drawings described below are only some of the embodiments recorded in this specification. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0031] Figure 1 A cross-sectional view of a tank seal jet cleaning device provided in a specific embodiment of the present disclosure;

[0032] Figure 2 A cross-sectional view of a sealing diverter ball provided in a specific embodiment provided by the present disclosure;

[0033] Figure 3 A three-dimensional diagram of a sealing diverter ball provided in a specific embodiment provided by the present disclosure;

[0034] Figure 4 It is a cutaway front view of the blocking plate frame and the conical head provided in the specific embodiment provided by the present disclosure;

[0035] Figure 5 It is a left side view of the blocking plate frame and the conical head provided in the specific embodiment provided by the present disclosure;

[0036] Figure 6 A left side view of a loading ring provided in a specific embodiment provided by the present disclosure;

[0037] Figure 7 A left side view of a top tightening ring provided in a specific embodiment provided by the present disclosure;

[0038] Figure 8 A front view of a tightening stud provided in a specific embodiment provided by the present disclosure;

[0039] Fig. 9 A front view of a guide gear provided in a specific embodiment of the present disclosure;

[0040] Fig.10 A cross-sectional view of the cleaning device provided in the specific embodiment provided by the present disclosure, when the cleaning device is mounted on the tank flange and rotated to a first angle;

[0041] Fig.11 A cross-sectional view of the cleaning device provided in the specific embodiment provided in the present disclosure, when the cleaning device is mounted on the tank flange and rotated to a second angle.

[0042] In the figure: 1-blocking frame, 101-flange connecting hole, 102-threaded hole, 103-motor shaft hole, 104-stud hole, 105-sealing ring groove; 2-shaft sealing ring; 3-driving motor; 4-conical head; 5-pipe connection; 6-valve; 7-high-pressure hose; 8-tightening stud; 9-column sealing ring; 10-tightening ring; 11-compression spring; 12-loading ring; 13-ball sealing ring; 14-sealing diverter ball; 15-gear ring; 16-straight tube; 17-bent tube; 18-guide gear, 1801-gear, 1802-limiting ring, 1803-screw; 19-tank flange; 20-tank shell. DETAILED DESCRIPTION

[0043] The technical solution provided in the present disclosure is further described below in conjunction with the accompanying drawings:

[0044] Depend on Figures 1 to 11 As shown, a specific tank seal jet cleaning device is provided.

[0045] It can be seen from the figure that the specific tank sealing jet cleaning device includes a connecting pipe, a valve, a high-pressure hose and a high-pressure pump, as well as a blocking plate frame, a shaft sealing ring, a reduction motor, a cone head, a tightening stud, a column sealing ring, a top tightening ring, a compression spring, a loading ring, a ball sealing ring, a sealing diverter ball, a wave-shaped gear ring, a straight shot tube, a curved shot tube and a guide gear.

[0046] The blocking plate frame is a circular plate, which is installed at the flange of the storage tank and serves as a mounting bracket for other parts of the device; several flange connecting holes, 4-6 threaded holes, 1 motor shaft hole, and 3 stud holes are processed on the blocking plate frame, and two sealing ring grooves are processed in the motor shaft hole and the stud holes; the middle large hole of the blocking plate frame is a conical surface tangent to the sealing diversion sphere, and two sealing ring grooves are processed on the conical surface.

[0047] The big end of the conical seal head is connected to the outer side of the plugging plate frame, and the small end of the conical seal head is connected to the connecting pipe to form a liquid supply sealing chamber of the sealing diverter ball.

[0048] The tightening ring is a copper alloy circular plate with three holes processed on the circumference of the plate for passing the tightening studs. The middle large hole of the tightening ring is a conical surface tangent to the sealing diverter ball surface, which is used to tighten the sealing diverter ball.

[0049] The loading ring is a circular plate with a large hole, and three threaded holes are processed at the circumferential boss of the plate for connecting the tightening studs.

[0050] The tightening stud is inserted from the outside of the blocking plate frame, passes through the top tightening ring and the compression spring, and is connected to the threaded hole of the loading ring.

[0051] The tightening stud, column sealing ring, top tightening ring, compression spring, loading ring and ball sealing ring constitute the sealing parts of the sealing diverter ball; by rotating the tightening stud, the positioning distance of the loading ring can be adjusted, and the compression spring acts on the top tightening ring to adjust the tightness of the sealing diverter ball compression ball sealing ring to ensure the spherical sealing effect.

[0052] The sealing diverter ball is a hollow stainless steel ball with a smooth outer wall, which is installed between the blocking plate frame and the top tightening ring; the sealing diverter ball has a hole on one side facing the conical head for liquid inlet; the outer wall on the other side of the sealing diverter ball is centered at a point at an angle of 5-15° to the axis of the opening, and several straight tubes and the curved tubes are installed and connected; wherein, 3-5 straight tubes in different directions are installed in the central area for jet cleaning of the inner wall of the storage tank opposite to the installation position of the device; 6-9 curved tubes in different directions are installed on the outer periphery of the straight tube, and the nozzle section of the curved tube is bent into an angle of 100-120° for jet cleaning of the inner wall of the rest of the storage tank; the sealing diverter ball and the several straight tubes and curved tubes in different directions form a structural layout for jet cleaning in multiple directions.

[0053] The outer wall of the sealing diverter ball is taken as the reference plane at the perpendicular direction of the ball center of the opening axis, and a wave-shaped gear ring is installed. The wave-shaped gear ring is closed around the outer wall of the sealing diverter ball in a cycle; the deviation distance of the left and right swing peaks and valleys of the wave-shaped gear ring from the reference plane is based on ensuring that the sealing diverter ball can swing at an angle of 15-25°, and the number of left and right peaks and valleys in one circle is 4-6.

[0054] The guide gear is installed on the shaft of the reduction motor and consists of 1 gear, 2 limit rings, and 4-6 screws; the gear is engaged with the wave-shaped gear ring, and the limit ring clamps and limits the wave-shaped gear ring to ensure that the engagement is not misaligned, and pushes the wave-shaped gear ring to swing left and right.

[0055] The driving motor is an explosion-proof reduction motor, which is installed at the motor shaft hole outside the blocking plate frame by bolts.

[0056] The driving motor, shaft sealing ring, guide gear and wave-shaped gear ring constitute the rotating and swinging driving components of the sealing diverter ball. The reduction motor drives the shaft sealing ring to rotate in the reference plane direction of the sealing diverter ball through the guide gear. While the wave-shaped gear ring drives the sealing diverter ball to rotate, the left and right peak and valley structure of the wave-shaped gear ring also drives the sealing diverter ball to swing left and right.

[0057] The specific installation and use methods of this tank seal jet cleaning device are as follows:

[0058] (1) Before installing the device, rotate the tightening stud to adjust the tightness of the sealing diverter ball and the compression ball seal ring to ensure the spherical sealing effect.

[0059] (2) When installing this device, first remove the blind plate at the original flange hole on the storage tank to be cleaned, and then install the blocking plate frame of this device on the flange of the storage tank through bolts, nuts and sealing gaskets.

[0060] (3) When cleaning is required, start the high-pressure pump, open the valve, and the cleaning liquid enters the sealed diverter ball and is diverted to each straight-shot tube and curved-shot tube. At the same time, start the reduction motor, and the sealed diverter ball rotates and swings to achieve jet cleaning in all directions of the inner wall of the tank.

[0061] The storage tank sealing jet cleaning device provided by the present invention can be installed and fixed on a storage tank for long-term use, and can also be temporarily installed on a storage tank and then removed after cleaning is completed.

Claims

1. A tank seal jet cleaning device, comprising a blocking plate frame (1), characterized in that: The device also includes a sealing diverter ball (14), a loading ring (12) and a tightening stud (8); The sealing diverter ball is a hollow stainless steel ball with a smooth outer wall and a liquid inlet hole. A plurality of injection tubes are arranged on the opposite side of the liquid inlet hole. The liquid inlet hole is used to connect a high-pressure water pipe. The blocking plate frame is a circular plate with a first middle matching hole surface, which is used to be installed at the flange of the storage tank as a mounting bracket for other components in the device; the blocking plate frame is processed with a plurality of flange connection holes and stud holes, and two sealing ring grooves are arranged in the stud holes; the first middle matching hole surface is a conical surface, which is tangent to the spherical surface of the sealing diverter ball, and two sealing ring grooves are arranged at the middle matching hole surface; The loading ring is a circular plate with a large central hole, and three threaded holes are processed on the circumferential boss of the plate for connecting the tightening studs; The sealing diverter ball is installed between the blocking plate frame and the loading ring; The tightening stud is inserted from the outside of the blocking plate frame and connected to the threaded hole of the loading ring; The shooting tube is arranged in the sealing diverter ball according to the following mode, that is, On the outer wall of the opposite side of the liquid inlet hole of the sealing diverter ball, a point at a set angle away from the opening axis is selected as the jet center, and the jet center area and the jet peripheral area are determined; a plurality of straight jet tubes are arranged in the jet center area, and a curved jet tube is arranged in the jet peripheral area, wherein the curved jet tube has a curved nozzle section; The device also includes a guide gear (18) and a drive motor (3); A gear ring capable of meshing with the guide gear is arranged on the outer wall of the sealing diverter ball, so that when the guide gear rotates, the sealing diverter ball can follow the rotation; The guide gear includes a gear and two limiting rings, which are installed on the shaft of the driving motor; the limiting ring is used to clamp and limit the gear ring to ensure that the meshing is not misaligned; The driving motor is fixed on the blocking plate frame; The gear ring is wave-shaped; The plane perpendicular to the axis of the liquid inlet hole and passing through the center of the ball is used as the reference plane. The gear ring is installed on the reference plane and has left and right swing peaks and valleys; the gear ring is closed in a cycle around the outer wall of the sealing diverter ball.

2. The tank seal jet cleaning device according to claim 1 is characterized in that: The device also includes a tightening ring (10); the tightening ring is a copper alloy circular plate having a second middle matching hole surface, a hole for passing the tightening stud is processed at the circumference of the plate of the tightening ring, and the second middle matching hole surface of the tightening ring is a conical surface, which is tangent to the sealing diverter ball surface and is used to tighten the sealing diverter ball; The tightening ring is located between the loading ring and the blocking plate frame, and the spherical surface of the sealing diverter ball contacts the loading ring and the blocking plate frame respectively; a compression spring (11) is arranged between the tightening ring and the loading ring; and the tightening stud is used to pass through the blocking plate frame, the tightening ring and the loading ring in sequence and lock them.

3. The tank seal jet cleaning device according to claim 2 is characterized in that: The device also includes a conical sealing head (4); the conical sealing head has a large head and a small head, the large head is fixedly connected to the outer side surface of the blocking plate frame, and the small head is used to connect a high-pressure water pipe; the inner wall of the conical sealing head and the outer wall of the sealing diverter ball form a liquid supply sealing cavity.

4. The tank seal jet cleaning device according to claim 3 is characterized in that: The small head and the liquid inlet hole of the sealing diverter ball have the same central axis.

5. The tank seal jet cleaning device according to claim 4 is characterized in that: The deviation distance of the left and right swing peaks and valleys of the gear ring from the reference plane is determined according to the following restrictive conditions, that is, the swing angle range of the sealing diverter ball is between 15° and 25°; the number of the left and right swing peaks and valleys on the gear ring is between 4 and 6.

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