Filter type pressure vessel

Abstract

The utility model discloses a filter type pressure vessel, relates to the field of pressure vessels, and aims to solve the problems that a filter screen arranged in the pressure vessel occupies the volume of the pressure vessel and filtered impurities are inconvenient to clean after the filter screen arranged in the pressure vessel is used for a long time in the prior art. A feeding pipe is fixedly connected to the upper end of the pressure container, a first connecting ring is fixedly connected to the upper end of the outer wall of the feeding pipe, a filter pipe is connected to the upper end of the feeding pipe, a filter screen is fixedly arranged in the middle of the interior of the filter pipe, and a second connecting ring is fixedly connected to the lower end of the outer wall of the filter pipe. The front end and the rear end of the first connecting ring and the front end and the rear end of the second connecting ring are jointly connected with a first C-shaped-section semicircular clamp and a second C-shaped-section semicircular clamp respectively, the filter screen is externally arranged on a feeding pipe of a pressure container, a detachable filter pipe structure is adopted, and the problem that a traditional built-in filter screen occupies the inner space of the container is effectively solved.

Description

Technical Field

[0001] This utility model relates to the field of pressure vessels, specifically a filter-type pressure vessel. Background Technology

[0002] A pressure vessel is a sealed device capable of withstanding internal or external pressure loads, widely used in petrochemical, energy, pharmaceutical, and food processing industries. Pressure vessels typically consist of a shell, heads, flanges, and nozzles, and are usually made of carbon steel, stainless steel, or special alloys to withstand high temperatures, high pressures, or corrosive media. Based on pressure rating, they are classified as low-pressure, medium-pressure, high-pressure, and ultra-high-pressure vessels. Due to the potential explosion risk, pressure vessels are classified as special equipment and require regular inspection and a valid operating license.

[0003] For example, patent application CN 203962998 U discloses a filter-type pressure vessel, comprising a carbon steel pressure-resistant tank body, an inlet at the top of the tank body with an inlet valve, an outlet at the bottom of the tank body with an outlet valve, at least one pressure relief device on the tank body, an inverted conical filter screen suspended at the top of the inner cavity of the tank body, the top of the filter screen covering the inlet and fixed to the inner wall of the tank body by rivets, a pressure-reducing device at the bottom of the filter screen, a filtration device connected below the filter screen, an explosion-proof material coating on the inner wall of the tank body, and a support frame on the outside of the tank body. This utility model's filter-type pressure vessel uses a carbon steel pressure-resistant structure with an explosion-proof material coating on the inner wall, improving the safety of the storage tank. It achieves a dual filtration effect through the filter screen and filtration device, effectively filtering out impurities in the gas and preventing impurities from affecting product quality. The process is simple, construction is convenient, and the structure is reliable.

[0004] The aforementioned technology, which places the filter screen inside the pressure vessel, occupies the pressure vessel's volume. Furthermore, after prolonged use, the impurities filtered by the filter screen inside the pressure vessel are difficult to clean. Therefore, there is an urgent market need to develop filter-type pressure vessels to help people solve existing problems. Utility Model Content

[0005] The purpose of this invention is to provide a filter-type pressure vessel to solve the problems mentioned in the background art, where placing the filter screen inside the pressure vessel occupies the pressure vessel volume, and the impurities filtered by the filter screen inside the pressure vessel are difficult to clean after long-term use.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a filter-type pressure vessel, comprising a pressure vessel, a feed pipe fixedly connected to the upper end of the pressure vessel, a first connecting ring fixedly connected to the upper end of the outer wall of the feed pipe, a filter pipe connected to the upper end of the feed pipe, a filter screen fixedly disposed in the middle of the interior of the filter pipe, a second connecting ring fixedly connected to the lower end of the outer wall of the filter pipe, and a first C-shaped cross-section semi-circular clamp and a second C-shaped cross-section semi-circular clamp respectively connected to the front and rear ends of the first connecting ring and the second connecting ring.

[0007] Preferably, a control valve is fixedly connected to the middle of the feed pipe.

[0008] Preferably, a sealing ring is provided between the first connecting ring and the second connecting ring, the lower end face edge of the first connecting ring is provided with a first oblique annular cut surface, and the upper end face edge of the second connecting ring is provided with a second oblique annular cut surface.

[0009] Preferably, the upper and lower ends of the first C-shaped cross-section semi-circular clamp and the second C-shaped cross-section semi-circular clamp are mirrored and fixedly connected to two trapezoidal cross-section semi-circular clamping members.

[0010] Preferably, the front and rear ends of the middle of the first connecting ring and the second connecting ring are respectively inserted into the first C-shaped cross-section semi-circular clamp and the second C-shaped cross-section semi-circular clamp. The first oblique annular sectional surface on the first connecting ring and the second oblique annular sectional surface on the second connecting ring are respectively in contact with the oblique surfaces of the two trapezoidal cross-section semi-circular clamping members inside the first C-shaped cross-section semi-circular clamp and the second C-shaped cross-section semi-circular clamp.

[0011] Preferably, both sides of the first C-shaped cross-section semicircular clamp and the second C-shaped cross-section semicircular clamp are fixedly connected with wing plates, and the two wing plates on both sides of the first C-shaped cross-section semicircular clamp and the second C-shaped cross-section semicircular clamp are fixedly connected by bolts.

[0012] Preferably, a flange connection plate is fixedly connected to the upper end of the filter tube.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] (1) In this utility model, by placing the filter screen outside on the feed pipe of the pressure vessel and adopting a detachable filter pipe structure, the problem of the traditional built-in filter screen occupying the internal space of the container is effectively avoided, and the effective volume utilization rate of the pressure vessel is significantly improved.

[0015] (2) In this utility model, a C-shaped section clamp is used in conjunction with a locking mechanism with a beveled surface to realize the quick assembly and disassembly of the filter tube, which facilitates regular cleaning and maintenance of the filter screen.

[0016] (3) In this utility model, the trapezoidal cross section clamping member and the oblique annular sectional surface are designed to generate axial sealing force during clamping. The sealing ring ensures the sealing reliability of the connection and maintains the convenience of pipe connection. Attached Figure Description

[0017] Figure 1 This is a front view of the filter-type pressure vessel of this utility model;

[0018] Figure 2 This is a front sectional view of the present invention;

[0019] Figure 3 This is a side sectional view of the present invention;

[0020] Figure 4 This is a detailed enlarged view of part A of this utility model.

[0021] In the diagram: 1. Pressure vessel; 101. Feed pipe; 102. Control valve; 2. First connecting ring; 201. First oblique annular section; 3. Filter pipe; 301. Flange connecting plate; 302. Filter screen; 4. Second connecting ring; 401. Second oblique annular section; 402. Sealing ring; 5. First C-shaped section semi-circular clamp; 501. Second C-shaped section semi-circular clamp; 502. Trapezoidal section semi-circular clamping part; 503. Wing plate; 504. Bolt. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0023] Please see Figure 1-4This utility model provides an embodiment of a filter-type pressure vessel, including a pressure vessel 1. A feed pipe 101 is fixedly connected to the upper end of the pressure vessel 1. A first connecting ring 2 is fixedly connected to the upper end of the outer wall of the feed pipe 101. A filter pipe 3 is connected to the upper end of the feed pipe 101. A filter screen 302 is fixedly disposed in the middle of the interior of the filter pipe 3. A second connecting ring 4 is fixedly connected to the lower end of the outer wall of the filter pipe 3. A sealing ring 402 is disposed between the first connecting ring 2 and the second connecting ring 4. The sealing ring 402 provides sealing between the first connecting ring 2 and the second connecting ring 4. The filter tube 3 is sealed, and a flange connection plate 301 is fixedly connected to the upper end of the filter tube 3. The upper end of the filter tube 3 is connected to the injection pipe through the flange connection plate 301. The raw material is injected into the pressure vessel 1 through the injection pipe, filter tube 3 and feed pipe 101. When the raw material passes through the inside of the filter tube 3, it is filtered by the filter screen 302 inside the filter tube 3. A control valve 102 is fixedly connected to the middle of the feed pipe 101. After the raw material is injected, the feed pipe 101 is closed by the control valve 102 to prevent the raw material inside the pressure vessel 1 from leaking.

[0024] Please see Figure 3 and Figure 4The first connecting ring 2 and the second connecting ring 4 are connected at their front and rear ends to a first C-shaped cross-section semi-circular clamp 5 and a second C-shaped cross-section semi-circular clamp 501, respectively. The lower edge of the first connecting ring 2 has a first oblique annular cut surface 201, and the upper edge of the second connecting ring 4 has a second oblique annular cut surface 401. The upper and lower ends of the first C-shaped cross-section semi-circular clamp 5 and the second C-shaped cross-section semi-circular clamp 501 are mirror-image arranged and fixedly connected to two trapezoidal cross-section semi-circular clamping members 502. The front and rear ends of the middle of the first connecting ring 2 and the second connecting ring 4 are respectively inserted into the first C-shaped cross-section semi-circular clamp 5 and the second C-shaped cross-section semi-circular clamp 501. The first oblique annular cut surface 201 on the first connecting ring 2 and the second oblique annular cut surface 401 on the second connecting ring 4 respectively fit against the oblique surfaces of the two trapezoidal cross-section semi-circular clamping members 502 inside the first C-shaped cross-section semi-circular clamp 5 and the second C-shaped cross-section semi-circular clamp 501. Both sides of the C-shaped semicircular clamp 501 are fixedly connected with wing plates 503. The two wing plates 503 on both sides of the first C-shaped semicircular clamp 5 and the second C-shaped semicircular clamp 501 are fixedly connected by bolts 504. When the first C-shaped semicircular clamp 5 and the second C-shaped semicircular clamp 501 are closed, the first connecting ring 2 and the second connecting ring 4 are clamped simultaneously. This causes the inclined surfaces of the two trapezoidal semicircular pressing parts 502 inside the first C-shaped semicircular clamp 5 and the second C-shaped semicircular clamp 501 to simultaneously press the first inclined annular cut surface 201 on the first connecting ring 2 and the second inclined annular cut surface 401 on the second connecting ring 4, thereby pressing the first connecting ring 2, the sealing ring 402 and the second connecting ring 4 together to achieve a seal. After the filling is completed, the first connecting ring 2 and the second connecting ring 4 can be separated by removing the bolts 504, and the filter tube 3 can be separated from the feed pipe 101, which facilitates the cleaning of the filter screen 302 inside the filter tube 3.

[0025] Working principle: In use, first connect the flange 301 at the upper end of the filter tube 3 to the flange of the external filling pipe. The raw material enters the filter tube 3 through the filling pipe, is filtered by the filter screen 302, and then enters the pressure vessel 1 through the feed pipe 101. When it is necessary to clean the filter screen 302, close the control valve 102 to cut off the feed channel, loosen the bolts 504 on the two side wing plates 503, so that the first C-section semi-circular clamp 5 and the second C-section semi-circular clamp 501 are separated. At this time, the first connecting ring 2 and the second connecting ring 4 are released from the clamping state, and the filter tube 3 can be removed from the feed pipe 101 for cleaning and maintenance. During reinstallation, the filter tube 3 with the cleaning filter screen 302 is connected to the first connecting ring 2 via the second connecting ring 4. After the sealing ring 402 is installed, the connecting ring is clamped with the first C-shaped cross-section semi-circular clamp 5 and the second C-shaped cross-section semi-circular clamp 501. The axial clamping force is generated by the cooperation between the inclined surface of the trapezoidal cross-section semi-circular pressing member 502 and the annular sectional surface. Finally, the locking bolt 504 is tightened to complete the sealing and fixing.

[0026] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A filter-type pressure vessel, comprising a pressure vessel (1), characterized in that: The pressure vessel (1) is fixedly connected to the upper end of the feed pipe (101), and the upper end of the outer wall of the feed pipe (101) is fixedly connected to the first connecting ring (2). The upper end of the feed pipe (101) is connected to the filter pipe (3), and the middle part of the filter pipe (3) is fixedly provided with a filter screen (302). The lower end of the outer wall of the filter pipe (3) is fixedly connected to the second connecting ring (4). The first connecting ring (2) and the second connecting ring (4) are respectively connected to the first C-shaped cross-section semi-circular clamp (5) and the second C-shaped cross-section semi-circular clamp (501) at their front and rear ends.

2. The filter-type pressure vessel according to claim 1, characterized in that: A control valve (102) is fixedly connected to the middle of the feed pipe (101).

3. The filter-type pressure vessel according to claim 1, characterized in that: A sealing ring (402) is provided between the first connecting ring (2) and the second connecting ring (4). The lower end face edge of the first connecting ring (2) is provided with a first oblique annular cut surface (201), and the upper end face edge of the second connecting ring (4) is provided with a second oblique annular cut surface (401).

4. The filter-type pressure vessel according to claim 3, characterized in that: The first C-section semicircular clamp (5) and the second C-section semicircular clamp (501) are mirrored at their upper and lower ends and are fixedly connected to two trapezoidal semicircular clamping parts (502).

5. The filter-type pressure vessel according to claim 4, characterized in that: The first connecting ring (2) and the second connecting ring (4) are inserted into the first C-shaped cross-section semi-circular clamp (5) and the second C-shaped cross-section semi-circular clamp (501) respectively. The first oblique annular cut surface (201) on the first connecting ring (2) and the second oblique annular cut surface (401) on the second connecting ring (4) are respectively attached to the oblique surfaces of the two trapezoidal cross-section semi-circular clamping parts (502) inside the first C-shaped cross-section semi-circular clamp (5) and the second C-shaped cross-section semi-circular clamp (501).

6. The filter-type pressure vessel according to claim 1, characterized in that: Both sides of the first C-section semicircular clamp (5) and the second C-section semicircular clamp (501) are fixedly connected with wing plates (503), and the two wing plates (503) on both sides of the first C-section semicircular clamp (5) and the second C-section semicircular clamp (501) are fixedly connected by bolts (504).

7. The filter-type pressure vessel according to claim 1, characterized in that: The upper end of the filter tube (3) is fixedly connected to a flange connection plate (301).

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