A self-sealing high-pressure filter and its upper cylinder

Abstract

The present invention provides a self-sealing high-pressure filter, which relates to the field of filters and sequentially includes an exhaust pipe, an upper cylinder body, and a lower cylinder body from top to bottom; the upper cylinder body is welded to the lower cylinder body; the upper cylinder body includes a cylinder body main body, a pipe I above and below the cylinder body main body, and a pipe II, and the upper cylinder body is an integral forging; in the direction from the pipe I to the pipe II, there is a tapered section in the through hole in the pipe I. The exhaust pipe includes a pipe plug with a bottom shape matching the tapered section and an air outlet pipe. Since the shape of the pipe plug matches the tapered section and the tapered section is tapered, the pipe plug is embedded in the tapered section by gravity to complete the connection. Multiple O-ring seals are respectively sleeved on multiple annular grooves to improve the sealing effect. One end of the sealing cover has a groove and the other end has a central hole. The sealing cover is threadedly connected to the pipe I to prevent the pipe plug from popping out of the pipe I due to pressure; Beneficial effects: The mechanism of this application is stable, and the end part adopts a double-sealing structure combining gravity tapered self-sealing and O-ring sealing, with firm sealing and convenient disassembly.

Description

Technical Field

[0001] The present invention belongs to the field of filters, and in particular relates to a self-sealing high-pressure filter and its upper cylinder body. Background Art

[0002] In existing high-pressure filters, the water inlet pipe and the water outlet pipe are usually welded to the filter body respectively. The top of the filter body is connected by a flange, a flange cover and bolts, and the exhaust pipe is welded to the flange cover. The disadvantages are as follows:

[0003] (1) When the filter element needs to be cleaned or replaced, first, multiple bolts need to be removed, and then the flange cover needs to be removed to take out the internal filter element for cleaning. The replacement of the filter element is difficult and time-consuming.

[0004] (2) The traditional sealing type is difficult to tighten the bolts, and the overall strength test is more dangerous, with greater test difficulty, requiring more labor, and the design pressure is within 35 MPa.

[0005] (3) The traditional high-pressure filter body has a large thickness, large overall structural dimensions, heavy component weights, and high manufacturing costs.

[0006] (4) The existing high-pressure filter has a complex structure, long manufacturing time, and high costs.

[0007] Therefore, it is necessary to develop a new high-pressure filter. Summary of the Invention

[0008] In order to solve the above problems, the present invention provides a self-sealing high-pressure filter with a simpler structure, convenient installation and maintenance, and higher safety.

[0009] The technical solution of the present invention is as follows:

[0010] A self-sealing high-pressure filter, which successively includes an exhaust pipe, an upper cylinder body, and a lower cylinder body from top to bottom;

[0011] The upper cylinder body is a four-way cylinder body, and the upper cylinder body is an integral forging, which is formed at one time in the factory;

[0012] Further, the upper cylinder body includes a cylinder body main body of a four-way type and cylindrical pipes distributed in four symmetric directions of the cylinder body main body and integrally structured with the cylinder body main body, that is, the cylinder body main body and the pipes on its upper, lower, left, and right sides are integrally of a four-way type;

[0013] Further, the pipes above and below the cylinder body main body are pipe Ⅰ and pipe Ⅱ, the pipes on both sides of the cylinder body main body are respectively a water inlet pipe and a water outlet pipe, a through hole penetrating pipe Ⅰ and pipe Ⅱ is provided inside the upper cylinder body, and the water inlet pipe and the water outlet pipe are hollow inside and are both communicated with the through hole;

[0014] There is a conical section in the internal through-hole of the pipeline Ⅰ, and this section is the conical section. The diameter of the circular through-hole at the top of the pipeline Ⅰ in the conical section is larger than the diameter of the circular through-hole at its lower part; the pipe plug with an exhaust pipe and the upper cylinder body adopt a gravity conical inclined plane self-sealing structure, that is: the exhaust pipe includes a pipe plug with a bottom shape matching the conical section and an air outlet pipe that is an integral forging with the pipe plug. The outer diameter of the air outlet pipe is smaller than the outer diameter of the pipe plug. The pipe plug has a certain gravity. Since the shape of the pipe plug matches the conical section and the conical section is conical, the pipe plug relies on gravity to embed into the conical section to complete their connection, forming a conical surface self-tightening seal;

[0015] Multiple annular grooves recessed from the outer circumference of the pipe plug are provided on the outer circumference of the pipe plug, and multiple O-ring seals are respectively sleeved on the multiple annular grooves to further improve the sealing effect.

[0016] Preferably, the number of both the annular grooves and the O-ring seals is 2;

[0017] A filter basket is provided in the through-hole. The filter basket is snap-fitted inside the through-hole, and the pipe plug seals the filter basket in the through-hole; the water coming from the water inlet pipe is filtered by the filter basket and then discharged from the water outlet pipe;

[0018] One end of the sealing cover is provided with a groove recessed from the bottom surface of the sealing cover. The other end of the sealing cover is provided with a central hole penetrating through the sealing cover and having an inner diameter matching the outer diameter of the air outlet pipe. Internal threads are provided in the groove, and external threads are provided on the outer circumference of the pipeline Ⅰ. After the central hole penetrates into the air outlet pipe, the sealing cover is threadedly connected to the pipeline Ⅰ to prevent the pipe plug from popping out of the pipeline Ⅰ due to pressure;

[0019] Furthermore, at least one top plate is provided on the outer circumferential surface of the pipeline Ⅰ at the bottom of the sealing cover. A hole is provided on the top plate, and at least one threaded hole is provided at the bottom of the sealing cover. After the screw is screwed into the threaded holes of the top plate and the sealing cover, the sealing cover and the pipeline Ⅰ are further fixed;

[0020] Furthermore, at least 1 circular groove is provided on the side surface of the sealing cover. During maintenance, the sealing cover can be disassembled by inserting a machete wrench or a crescent hook wrench into the circular groove, which is convenient for maintenance.

[0021] Furthermore, the filter basket includes a water inlet area and a filtering area from top to bottom. The filtering area includes a filtering area Ⅰ in the center and a filtering area Ⅱ surrounding the outer peripheral surface of the filtering area Ⅰ. The boundary line between the water inlet area and the filtering area is an inclined surface. The water coming from the water inlet pipe enters the water inlet area and then enters the filtering area Ⅰ. The qualified water after being filtered by the filtering area Ⅰ seeps out of the filter basket into the filtering area II and is discharged through the water outlet pipe;

[0022] The lower cylinder body is fixedly connected to the bottom of the pipeline Ⅱ, including by welding. The sewage outlet of the upper cylinder body is communicated with the sewage channel inside the lower cylinder body. The sewage pipe is fixed outside the lower cylinder body and is communicated with the sewage channel;

[0023] Furthermore, the sewage outlet of the filtration zone II is communicated with the sewage discharge channel and the sewage discharge pipe inside the lower cylinder body;

[0024] The bottom plate with a diameter larger than the outer diameter of the lower cylinder body is fixedly connected to the lower cylinder body;

[0025] A method for using a high-pressure filter. When the high-pressure filter needs to be used in series or connected to other pipelines, flange plates are fixedly connected to both ends of the water inlet pipe and the water outlet pipe, and the flange plates at both ends of the water inlet pipe and the water outlet pipe are respectively connected to two water pipes through flanges;

[0026] The beneficial effects of the present invention are as follows:

[0027] (1) The overall design of this high-pressure filter is ingenious. It is divided into two parts: the upper cylinder body and the lower cylinder body. The two forgings are welded to form an integral device.

[0028] (2) The shell of a conventional container is a cylinder, and the inlet and outlet are nozzles (or forging pipes) welded to the cylinder body. Due to high-pressure requirements, the thickness of the shell and the nozzles will be very thick, which is uneconomical. The processing and manufacturing of small-diameter and large-wall-thickness are difficult and costly. The upper cylinder body of the present application adopts an integral forging structure. The integral forging pipe avoids the deformation caused by welding and the weakening of the overall strength, avoids the possible welding defects in the welded connection, and only requires later assembly without welding. The overall structure of this application is compact and small in size, and the weight is much lighter than that of the traditional one. Since there are no weld points, it can maintain good strength even when the wall thickness is not particularly thick, meeting the working requirements. Combined with the connection structure of the lower cylinder body and the sealing cover, according to actual measurement, when the wall thickness of the upper cylinder body is 40 mm, it can meet the working requirements with a pressure greater than 35 MPa and less than 100 MPa.

[0031]

[0029] (3) For a conventional vent, a forging pipe and a sealing cover need to be welded in a saddle-type connection, which not only increases the working intensity but also makes the welded connection unstable. The vent of this application includes a pipe plug and an outlet pipe. The pipe plug and the upper cylinder body adopt a double-sealing structure combining gravity, conical, and inclined-plane self-sealing with an O-ring seal. Multiple annular grooves recessed from the outer circumference of the pipe plug are provided on the outer circumference of the pipe plug, and the sealing effect is further improved by respectively sleeving multiple O-ring seals on the multiple annular grooves. The two-stage sealing structure is convenient for installation and more reliable for sealing.

[0030] (4) Traditional high-pressure filters use flanges, flange plates, and bolts for fastening. First, the fastening is difficult. Multiple screws and nuts need to be installed, which not only makes the overall strength test more dangerous, more difficult, and requires more labor, but also makes it difficult, time-consuming, and laborious to replace the filter element. In this application, the pipe plug and the upper cylinder body adopt a gravity, conical, and inclined-plane self-sealing structure, which is simple, convenient, and fast to connect. Only one person can complete the experimental work.

[0031] (5) The sealing cover prevents the pipe plug from popping out of the pipeline I due to pressure, further improving the connection tightness between the upper cylinder and the exhaust pipe with the pipe plug. The top plate on the outer wall of the upper cylinder is connected to the sealing cover by screws to press the sealing cover, indirectly bearing the pressure provided by the internal pressure to the sealing cover, and further ensuring the safety of the equipment structure.

[0032] At a position 10 mm away from the installation position of the external compression nut on the cylinder body, 2 top plates are symmetrically welded. Each plate is sleeved with an M10 thread, and the installed external nut is fixed with an M10 set screw to prevent loosening.

[0033] (6) Two circular grooves are symmetrically arranged on the outer end face of the sealing cover. When installing or for maintenance, the sealing cover can be disassembled by inserting a machete wrench or a crescent wrench into the circular grooves, the exhaust pipe can be disassembled, and the filter element in the upper cylinder body can be replaced. The replacement is simple and convenient, reducing the operation difficulty.

[0034] At the upper middle part of the integral forging of the sealing cover, at a position 5 mm away from the installation position of the external nut, a groove is opened and a retaining ring is set. In this way, when the external nut is unscrewed, the retaining ring can be lifted, and the integral forging of the pipe plug can be lifted out of the pipeline I. Description of the Drawings

[0035] Figure 1 is a schematic diagram of the upper cylinder body;

[0036] Figure 2 is a longitudinal sectional view of the upper cylinder body;

[0037] Figure 3 is a schematic diagram of the upper cylinder body with the exhaust pipe installed;

[0038] Figure 4 is a schematic diagram of the pipeline I in perspective;

[0039] Figure 5 is a schematic diagram of the upper cylinder body with the sealing cover and the exhaust pipe installed;

[0040] Figure 6 is a three-dimensional view of the upper cylinder body with the sealing cover and the exhaust pipe installed;

[0041] Figure 7 is a plan view of the self-sealing high-pressure filter of the present invention;

[0042] Figure 8 is a physical photo of the self-sealing high-pressure filter of the present invention;

[0043] In the figure:

[0044] 1. Sealing cover 2. Upper cylinder body 3. Lower cylinder body

[0045] 2-1. Cylinder body main body 5. Pipe plug 6. Exhaust pipe

[0046] 7. O-ring seal 2-2. Pipeline I 2-3. Pipeline II

[0047] 2-4. Inlet pipe 2-5. Outlet pipe 1-1. Groove

[0048] 1-2. Central hole 8. Top plate 9. Round groove 10. Water inlet area 11. Filtration area I 12. Filtration area II

[0049] 3-1. Sewage discharge channel 13. Sewage discharge pipe 14. Bottom plate

[0050] 2-2-1. Tapered section Detailed implementation method

[0051] Embodiment 1:

[0052] A self-sealing high-pressure filter, which sequentially includes a sealing cover 1, an upper cylinder body 2, and a lower cylinder body 3 from top to bottom;

[0053] As Figure 1 shown, the upper cylinder body 2 is a four-way cylinder body, and the upper cylinder body 2 is an integral forging, which is formed at one time in the factory; the upper cylinder body 2 includes a square cylinder body main body 2-1 and cylindrical pipelines distributed in four symmetric directions of the cylinder body main body 2-1 and integrally structured with the cylinder body main body 2-1, that is, the cylinder body main body 2-1 and the pipelines on its upper, lower, left, and right sides are integrally of a four-way type; the pipelines above and below the cylinder body main body 2-1 are Pipeline I 2-2 and Pipeline II 2-3, and the pipelines on both sides of the cylinder body main body 2-1 are an inlet pipe 2-4 and an outlet pipe 2-5 respectively. The outer diameters of Pipeline I 2-2, Pipeline II 2-3, inlet pipe 2-4, and outlet pipe 2-5 are all 170 mm, the wall thickness is 40 mm, and the length is 300 mm. A through hole penetrating Pipeline I 2-2 and Pipeline II 2-3 is provided inside the upper cylinder body 2, and the inside of the inlet pipe 2-4 and the outlet pipe 2-5 is hollow and both are communicated with the through hole;

[0054] The overall length of the lower cylinder body 3 is 260 mm, the inner semi-circle diameter of the lower cylinder body 3 is 60 mm, and the sewage discharge port diameter of the lower cylinder body 3 is 10 mm. The lower cylinder body 3 is welded to the bottom of Pipeline II 2-3. After welding, non-destructive testing is carried out, and the weld is qualified. Then, a hydrostatic test is carried out to check the strength and sealing performance. Ensure no leakage. The sewage discharge port of the upper cylinder body 2 is communicated with the sewage discharge channel 3-1 inside the lower cylinder body 3, and the sewage discharge pipe 13 is fixed outside the lower cylinder body 3 and communicated with the sewage discharge channel 3-1;

[0055] Furthermore, the sewage discharge port of the filtration area II 12 is communicated with the sewage discharge channel 3-1 and the sewage discharge pipe 13 inside the lower cylinder body 3;

[0056] The bottom plate 14 with a diameter larger than the outer diameter of the lower cylinder body 3 is fixedly connected to the lower cylinder body 3;

[0057] Then, the filter basket is loaded into the upper cylinder body 2. As Figure 7 shown, a filter basket is provided in the through hole. The filter basket is clamped inside the through hole. The filter basket includes a water inlet area 10 and a filtering area from top to bottom. The filtering area includes a central filtering area I 11 and a filtering area II 12 surrounding the outer peripheral surface of the filtering area I 11. The boundary line between the water inlet area 10 and the filtering area is an inclined surface. The water coming in through the water inlet pipe 2-4 enters the water inlet area 10 and then enters the filtering area I 11;

[0058] As Figure 2 shown, a section of the internal through hole of the pipe I 2-2 is conical. This section is the conical section 2-2-1. The diameter of the circular through hole at the top of the pipe I 2-2 in the conical section 2-2-1 is larger than the diameter of the circular through hole at its lower part; As Figure 3 , Figure 4 shown, the pipe plug 5 with an exhaust pipe and the upper cylinder body 2 adopt a gravity conical inclined surface self-sealing structure, that is: as Figure 3 shown, the exhaust pipe includes a pipe plug 5 with a bottom shape matching that of the conical section 2-2-1 and an air outlet pipe 6 that is an integral forging with the pipe plug 5. The outer diameter of the air outlet pipe 6 is smaller than the outer diameter of the pipe plug 5. The pipe plug 5 has a certain gravity. Since the shape of the pipe plug 5 matches that of the conical section 2-2-1 and the conical section 2-2-1 is conical, as Figure 4 shown, the pipe plug 5 is embedded into the conical section 2-2-1 by gravity to complete the connection between the two; as Figure 2 shown, two layers of annular grooves recessed from the outer circumference of the pipe plug 5 are provided on the outer circumference of the pipe plug 5 and the inner wall of the conical section 2-2-1. Two O-ring seals 7 are respectively sleeved on the two layers of the annular grooves to further improve the sealing effect.

[0059] As Figure 7 shown, the pipe plug 5 seals the filter basket in the through hole; the qualified water filtered by the filtering area I 11 seeps out from the filter basket to the filtering area II and is discharged through the water outlet pipe 2-5;

[0060] Finally, the sealing cover 1 is installed on the upper cylinder body 2. Further, one end of the sealing cover 1 is provided with a groove 1-1 recessed from the bottom surface of the sealing cover 1. The other end of the sealing cover 1 is provided with a central hole 1-2 penetrating through the sealing cover 1 and having an inner diameter matching the outer diameter of the air outlet pipe 6. An internal thread is provided in the groove 1-1. An external thread is provided on the outer circumference of the pipe I 2-2. After the central hole 1-2 penetrates the air outlet pipe 6, the sealing cover 1 and the pipe I 2-2 are threadedly connected to prevent the pipe plug 5 from popping out of the pipe I 2-2 due to pressure;

[0061] Furthermore, at least one top plate 8 is provided on the outer circumferential surface of the pipe Ⅰ 2-2 at the bottom of the sealing cover 1. There are holes on the top plate 8, and at least one threaded hole is provided at the bottom of the sealing cover 1. After the screw is screwed into the threaded holes of the top plate 8 and the sealing cover 1, the sealing cover 1 and the pipe Ⅰ 2-2 are further fixed.

[0062] Furthermore, 2 symmetrical circular grooves 9 are provided on the side surface of the sealing cover 1. During maintenance, the sealing cover 1 can be disassembled by inserting a bent knife wrench or a crescent hook wrench into the circular grooves 9, which is convenient for maintenance.

[0063] This application can be assembled within 10 minutes. Under working conditions, water is pumped into this device by a pump, with a water pressure of 80 MPa and a flow rate of 3.15 m 3 / h;

[0064] After actual use, the usage situation is inspected and maintained every year. After 3 years of detection, as shown in this device Figure 8 There is no damage on the surface and no air leakage.

[0065] Comparative Example 1:

[0066] It has the same size parameters as Example 1, but adopts the traditional welding method, that is, the pipe Ⅰ 2-2, the pipe Ⅱ 2-3, the water inlet pipe 2-4, and the water outlet pipe 2-5 are welded to the cylinder body 2-1. The outer diameters of the pipe Ⅰ 2-2, the pipe Ⅱ 2-3, the water inlet pipe 2-4, and the water outlet pipe 2-5 are all 170 mm, the wall thickness is 40 mm, and the length is 300 mm. Under working conditions, water is pumped into this device by a pump, with a water pressure of 80 MPa and a flow rate of 3.15 m 3 / h. After using it for more than one year, the welding joint between the pipe Ⅰ 2-2 and the cylinder body 2-1 is damaged, and the welding joints between the remaining pipes Ⅱ 2-3, the water inlet pipe 2-4, and the water outlet pipe 2-5 and the cylinder body 2-1 are not damaged. After maintenance, it continues to be used. After using it for more than half a year, the welding joint between the pipe Ⅰ 2-2 and the cylinder body 2-1 and the surrounding area are damaged again and cannot be used continuously.

[0067] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the attached Figure 1 figure, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0068] The above has described in detail an embodiment of the present invention, but the above content is only a preferred embodiment of the present invention and cannot be considered as defining the scope of implementation of the present invention. All equivalent changes and improvements made according to the scope of application of the present invention should still fall within the scope covered by the patent of the present invention.

Claims

1. A self-sealing high-pressure filter, characterized in that: It successively includes an exhaust pipe, an upper cylinder body, and a lower cylinder body from top to bottom; The upper cylinder body is a four-way cylinder body, including a four-way cylinder body main body and cylindrical pipes distributed in four symmetrical directions of the cylinder body main body, that is, the cylinder body main body and the pipes on its upper, lower, left, and right sides as a whole present a four-way shape; The pipes above and below the cylinder body main body are Pipe I and Pipe II, the pipes on both sides of the cylinder body main body are a water inlet pipe and a water outlet pipe respectively, a through hole penetrating Pipe I and Pipe II is arranged inside the upper cylinder body, and the water inlet pipe and the water outlet pipe are hollow inside and are both communicated with the through hole; A filter basket is arranged in the through hole, the filter basket is clamped inside the through hole, and a pipe plug seals the filter basket in the through hole; The filter basket successively includes a water inlet area and a filtering area from top to bottom, and the filtering area includes a filtering area I at the center and a filtering area II surrounding the outer peripheral surface of the filtering area I; The water coming in through the water inlet pipe enters the water inlet area and then enters the filtering area I, and the qualified water after being filtered by the filtering area I seeps out of the filter basket to the filtering area II and is discharged through the water outlet pipe; A section in the through hole inside Pipe I is conical, and this section is a conical section. The diameter of the circular through hole at the top of Pipe I in the conical section is larger than the diameter of the circular through hole at its lower part; the pipe plug with an exhaust pipe and the upper cylinder body adopt a gravity conical inclined plane self-sealing structure, that is: the exhaust pipe includes a pipe plug with a bottom shape matching the conical section and an air outlet pipe which is an integral forging with the pipe plug. The outer diameter of the air outlet pipe is smaller than the outer diameter of the pipe plug. The shape of the pipe plug matches the conical section and the conical section is conical. The pipe plug relies on gravity to be embedded in the conical section to complete their connection.

2. The self-sealing high-pressure filter according to claim 1, wherein: Multiple annular grooves recessed from the outer circumference of the pipe plug are arranged on the outer circumference of the pipe plug, and multiple O-ring seals are respectively sleeved on the multiple annular grooves.

3. The self-sealing high-pressure filter according to claim 2, wherein: The number of both the annular grooves and the O-ring seals is 2.

4. A self-sealing high-pressure filter according to any one of claims 1-3, characterized in that: One end of the sealing cover is provided with a groove recessed from the bottom surface of the sealing cover, the other end of the sealing cover is provided with a central hole penetrating the sealing cover and having an inner diameter matching the outer diameter of the air outlet pipe. Internal threads are provided in the groove, external threads are provided on the outer circumference of Pipe I. After the central hole penetrates the air outlet pipe, the sealing cover and Pipe I are threadedly connected.

5. The self-sealing high-pressure filter according to claim 4, characterized in that: At least one top plate is provided on the outer circumferential surface of Pipe I at the bottom of the sealing cover, holes are provided on the top plate, and at least one threaded hole is provided at the bottom of the sealing cover. After the screw is screwed into the threaded holes of the top plate and the sealing cover, the sealing cover and Pipe I are further fixed.

6. The self-sealing high-pressure filter according to claim 5, wherein: At least 1 circular groove is provided on the side surface of the sealing cover. During maintenance, the sealing cover is disassembled by inserting a machete wrench or a crescent hook wrench into the circular groove.

7. The self-sealing high-pressure filter according to claim 1, characterized in that: The lower cylinder body is welded to the bottom of Pipe II, the sewage outlet of the upper cylinder body is communicated with the sewage channel inside the lower cylinder body, and the sewage pipe is fixed outside the lower cylinder body and is communicated with the sewage channel; The sewage outlet of the filtering area II is communicated with the sewage channel and the sewage pipe inside the lower cylinder body.

8. The self-sealing high-pressure filter according to claim 1, wherein: The dividing line between the water inlet area and the filtering area is an inclined plane.

9. An upper cylinder body, which is applied to the self-sealing high-pressure filter described in claim 1, and is characterized in that: The upper cylinder body is a four-way cylinder body, and the upper cylinder body is an integral forging; That is: the upper cylinder body includes a four-way cylinder body main body and cylindrical pipes distributed in four symmetrical directions of the cylinder body main body and having an integral structure with the cylinder body main body.

Images