Manhole flange convenient to clean

Abstract

According to the technical scheme, the manhole flange convenient to clean comprises an end socket flange and a barrel flange, the end socket flange is arranged at the top of the barrel flange in a sealed mode, the end socket flange is hinged to one end of the barrel flange, the barrel flange is welded to the top of a reaction kettle, the diameter of the upper portion in the barrel flange is not changed, and the diameter of the lower portion in the barrel flange is not changed. The diameter of the end socket flange is gradually increased from the middle to the bottom to form a splayed hole, the top of the end socket flange is sealed through a spherical crown end socket, a fixing support lug is welded to the upper portion of the outer surface of the barrel flange, a lifting lug bolt is hinged to the fixing support lug, a fastening block is movably arranged on the lifting lug bolt, and a lifting ring nut located at the top of the fastening block is arranged on the lifting lug bolt in a threaded mode. The splayed hole is finely turned in the barrel flange, the small end of the splayed hole is connected with the opening of the barrel flange in an arc transition manner, and the smooth arc is adopted, so that materials can well flow, the condition that sanitary dead angles are easy to appear in an inner hole is avoided, and the barrel flange is convenient to clean.

Description

Technical Field

[0001] The utility model relates to the technical field of manhole flanges, in particular to a manhole flange which is convenient to clean. Background Technique

[0002] A manhole flange is a special type of flange with a manhole, usually used on equipment that needs to be frequently cleaned and inspected. It plays a key role in a pharmaceutical reactor. The traditional manhole flange consists of a flange, a short section, and a circular ring-shaped part with corresponding bolt holes.

[0003] The traditional manhole flange is welded and formed with the reactor through a short section welded to the flange. Since the short section must retain a certain length to be welded to the flange and the reactor, it inevitably creates a sanitary dead corner at the connection part of the reactor. When used in a pharmaceutical liquid preparation system, this kind of manhole flange cannot meet the requirements of pharmaceutical liquid preparation. Content of the Utility Model

[0004] Aiming at the deficiencies of the existing technology, the purpose of the utility model is to provide a manhole flange which is convenient to clean.

[0005] In order to achieve the above purpose, the technical solution of the utility model is as follows:

[0006] A manhole flange which is convenient to clean, including a head flange and a cylinder flange. The head flange is hermetically arranged on the top of the cylinder flange, and one end of the head flange and the cylinder flange is hinged. The cylinder flange is welded on the top of the reactor. The diameter of the upper part inside the cylinder flange remains unchanged, and the diameter gradually increases from the middle to the bottom to form an eight-shaped hole. The top of the head flange is closed by a spherical crown head.

[0007] Preferably, a fixed support ear is welded on the upper part of the outer surface of the cylinder flange. A lifting lug bolt is hinged on the fixed support ear. A locking block for pressing and fixing the head flange is movably arranged on the lifting lug bolt, and a lifting ring nut located on the top of the locking block is threadedly arranged on the lifting lug bolt.

[0008] Preferably, a notch is opened at the lower part of one side of the locking block. The side surface of the notch is attached to the cylinder flange, and the top surface of the notch is attached to the top of the head flange.

[0009] Preferably, a slotted groove is opened at the connection part between the head flange and the spherical crown head, and the top surface of the notch of the locking block is set as an inclined surface matching the slotted groove.

[0010] Preferably, a circumferential groove is opened at the top of the cylinder flange, and an O-ring adapted to the circumferential groove is fixed at the bottom of the head flange.

[0011] Preferably, an observation sight glass for observing the change of materials inside the reactor is arranged at the center of the top of the spherical crown head.

[0012] Preferably, a handle is provided on one side of the top of the spherical crown head away from the hinged end of the head flange and the cylinder flange.

[0013] Preferably, both the head flange and the cylinder flange are made of stainless steel, pure titanium or Hastelloy.

[0014] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0015] 1. By precision turning an eight-shaped hole in the cylinder flange of the present utility model, the upper part is small and the lower part is large. On the one hand, it increases the observation range of the observation sight glass, making it more convenient to observe the changes of the materials in the reaction kettle. On the other hand, the small end of the eight-shaped hole is connected to the opening of the cylinder flange with an arc transition. The smooth arc can enable the materials to flow well, avoiding the situation of sanitary dead corners that are likely to appear in the inner hole, thus facilitating cleaning and meeting the aseptic requirements, further increasing the scope of application and improving the practical value.

[0016] 2. By rotating the lifting ring nut to drive the locking block to buckle in the inclined groove at the connection between the head flange and the spherical crown head of the present utility model, the operation is simple, which is beneficial to completing the assembly between the head flange and the cylinder flange and also improves the connection stability between the head flange and the cylinder flange. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The disclosure of the present utility model will be described with reference to the accompanying drawings. It should be understood that the drawings are only for illustrative purposes and are not intended to limit the protection scope of the present utility model. In the drawings, the same reference numerals are used to refer to the same components.

[0018] Among them:

[0019] Figure 1 is the schematic diagram of the overall structure of the present utility model Figure 1 ;

[0020] Figure 2 is the schematic diagram of the overall structure of the present utility model Figure 2 ;

[0021] Figure 3 is the schematic diagram of the structure of the fixed support ear of the present utility model.

[0022] The reference numerals in the figures are explained as follows: 1. Head flange; 2. Cylinder flange; 3. Spherical crown head; 4. Observation sight glass;

[0023] 5. Fixed support ear; 6. Lifting lug bolt; 7. Locking block; 8. Lifting ring nut. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] It is easy to understand that according to the technical solution of the present utility model, without changing the essential spirit of the present utility model, those of ordinary skill in the art can propose various interchangeable structural forms and implementation manners. Therefore, the following specific embodiments and the accompanying drawings are only exemplary illustrations of the technical solution of the present utility model, and should not be regarded as the whole of the present utility model or as a limitation or restriction on the technical solution of the present utility model.

[0025] As Figure 1 shown, as a manhole flange that is easy to clean according to the present utility model, it includes a head flange 1 and a cylinder flange 2. The top of the head flange 1 is closed by a spherical crown head 3. The cylinder flange 2 is welded to the top of the reaction kettle. A circumferential groove is provided at the top of the cylinder flange 2, and an O-ring adapted to the circumferential groove is fixed at the bottom of the head flange 1. The head flange 1 is hermetically arranged on the top of the cylinder flange 2 through the circumferential groove and the O-ring. One end of the head flange 1 and the cylinder flange 2 is hinged through a pin shaft, a split pin and an ear shaft, so as to open the head flange 1 for adding materials.

[0026] As Figure 2 shown, a fixed support ear 5 is welded on the upper part of the outer surface of the cylinder flange 2. As Figure 3 shown, a lifting lug bolt 6 is hinged on the fixed support ear 5. A locking block 7 for pressing the head flange 1 is movably arranged on the lifting lug bolt 6, and a lifting ring nut 8 located at the top of the locking block 7 is threadedly arranged on the lifting lug bolt 6. The lifting lug bolt 6 is erected through the hinge between the fixed support ear 5 and the lifting lug bolt 6. By rotating the lifting ring nut 8, the lifting ring nut 8 descends on the lifting lug bolt 6, thereby driving the locking block 7 to descend until it reaches the top of the head flange 1, so as to press and fix the head flange 1, which not only realizes the assembly of the head flange 1 and the cylinder flange 2, but also further improves the sealing effect.

[0027] As Figure 3 shown, a notch is provided at the lower part of one side of the locking block 7. The side surface of the notch is in contact with the cylinder flange 2, and the top surface of the notch is in contact with the top of the head flange 1. The locking block 7 that is in contact with both the cylinder flange 2 and the head flange 1 at the same time increases the connection stability between the head flange 1 and the cylinder flange 2. An inclined groove is provided at the connection between the head flange 1 and the spherical crown head 3, and the top surface of the notch of the locking block 7 is set as an inclined surface matching the inclined groove. By rotating the lifting ring nut 8, the locking block 7 is driven to buckle into the inclined groove at the connection between the head flange 1 and the spherical crown head 3. The operation is simple, which is beneficial to complete the assembly between the head flange 1 and the cylinder flange 2, and also further improves the connection stability between the head flange 1 and the cylinder flange 2.

[0028] As Figure 2As shown, the diameter of the upper part inside the cylindrical flange 2 remains unchanged, and the diameter gradually increases from the middle to the bottom to form an eight-shaped hole. By precisely turning an eight-shaped hole inside the cylindrical flange 2 and through the transitional connection between the eight-shaped hole and the smooth arc of the upper part inside the cylindrical flange 2, the material flow can be well facilitated, avoiding the emergence of sanitary dead corners in the inner hole, being convenient for cleaning, and meeting the aseptic requirements. An observation sight glass 4 is provided at the center of the top of the spherical crown head 3. The change of the material inside the reaction kettle can be observed through the observation sight glass 4. At the same time, the observation range of the observation sight glass 4 is increased through the eight-shaped hole, making it more convenient to observe the change of the material inside the reaction kettle. A handle is provided on one side of the top of the spherical crown head 3 away from the hinged end of the head flange 1 and the cylindrical flange 2. The handle is beneficial to the opening of the head flange 1. Both the head flange 1 and the cylindrical flange 2 are made of flanges of stainless steel or pure titanium or Hastelloy. The service life of the flange is increased by using these materials with strong stability.

[0029] The technical scope of the present utility model is not limited to the content described above. Those skilled in the art can make various deformations and modifications to the above embodiments without departing from the technical idea of the present utility model, and these deformations and modifications should all fall within the protection scope of the present utility model.

Claims

1. A manhole flange that is easy to clean, characterized in that: The invention comprises a head flange (1) and a cylinder flange (2), wherein the head flange (1) is sealingly arranged at the top of the cylinder flange (2), and the head flange (1) and one end of the cylinder flange (2) are hingedly arranged, and the cylinder flange (2) is welded to the top of the reactor, the inner upper diameter of the cylinder flange (2) remains unchanged, and the diameter gradually increases from the middle to the bottom to form an eight-shaped hole, and the top of the head flange (1) is closed by a spherical cap head (3).

2. The easy-to-clean manhole flange according to claim 1, characterized in that: A fixing lug (5) is welded to the upper portion of the outer surface of the cylinder flange (2), and a lifting lug bolt (6) is hingedly connected to the fixing lug (5). A fixing block (7) for pressing and fixing the head flange (1) is movably provided on the lifting lug bolt (6), and a lifting eye nut (8) located at the top of the fixing block (7) is threadedly provided on the lifting lug bolt (6).

3. The easy-to-clean manhole flange according to claim 2, characterized in that: A notch is provided at the lower portion of one side of the fixing block (7), the side surface of the notch is in contact with the cylinder flange (2), and the top surface of the notch is in contact with the top of the head flange (1).

4. The easy-to-clean manhole flange according to claim 3, characterized in that: An inclined groove is provided at the connection between the head flange (1) and the spherical cap head (3), and the top surface of the notch of the fixing block (7) is arranged as an inclined surface matching the inclined groove.

5. The easy-to-clean manhole flange according to claim 1, characterized in that: A circumferential groove is formed on the top of the cylinder flange (2), and an O-ring matching the circumferential groove is fixed on the bottom of the head flange (1).

6. The easy-to-clean manhole flange according to claim 1, characterized in that: An observation mirror (4) for observing the changes of materials in the reaction kettle is arranged at the top center of the spherical cap seal (3).

7. The easy-to-clean manhole flange according to claim 6, characterized in that: A handle is provided on one side of the top of the spherical cap seal (3) away from the hinged end of the seal flange (1) and the cylinder flange (2).

8. The easy-to-clean manhole flange according to claim 1, characterized in that: The head flange (1) and the cylinder flange (2) are both flanges made of stainless steel, pure titanium or Hastelloy.

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