Sealed door structure

Abstract

The present invention provides a sealing door structure belonging to the field of aseptic sealing technology, comprising a sealing frame, one side of which is hingedly connected to one side of a sealing port, and a pressure plate provided on the other side of the sealing frame. The pressure plate is provided with a sealing mechanism, which includes a locking structure and a sealing handle; the locking structure includes a locking seat, a swing bolt, and a locking shaft; and the sealing handle includes an internally threaded rotating sleeve and a sealing outer sleeve. In the sealing door structure provided by the present invention, the end of the sealing outer sleeve is pressed tightly against the pressure plate and does not rotate with the internally threaded rotating sleeve. The sealing outer sleeve and the pressure plate do not produce friction and debris. The sealing outer sleeve and the internally threaded rotating sleeve are sealed together to seal and isolate the seal from the external space, reduce dead angles, and facilitate cleaning and sterilization operations.

Description

Technical Field

[0001] The present invention belongs to the technical field of aseptic sealing, and more particularly, relates to a sealing door structure. Background Art

[0002] The pharmaceutical, biological and other industries have high requirements for equipment sterility and cleanliness. The handles of traditional sealed doors have many blind spots, are difficult to clean and sterilize, and are prone to friction and debris. This may cause inadequate cleaning and lead to cross-contamination of materials, posing a great risk to product quality. Summary of the Invention

[0003] The object of the present invention is to provide a sealing door structure, which eliminates blind spots in cleaning and sterilization and avoids the problem of debris falling due to friction.

[0004] To achieve the above-mentioned object, the present invention adopts a technical solution as follows: providing a sealed door structure, comprising a sealing frame, a sealing plate connected to the sealing frame for sealing a sealing opening, one side of the sealing frame being hinged to one side of the sealing opening, a pressure plate provided on the other side of the sealing frame, a sealing mechanism provided on the pressure plate, and a corresponding locking structure and a sealing handle;

[0005] The locking structure includes a locking seat, a swing bolt and a locking shaft, wherein the locking seat is installed on the other side of the sealing port, a locking hole is formed on the locking seat, the swing bolt vertically passes through the pressure plate, the end ring of the swing bolt is coaxially arranged with the locking hole, the screw of the swing bolt is located on the side of the pressure plate away from the locking seat, and the locking shaft passes through the locking hole and the end ring;

[0006] The sealing handle includes an internal threaded sleeve and a sealing outer sleeve. The internal threaded sleeve is arranged on the side of the pressure plate away from the locking seat and is threadedly sleeved on the screw. The sealing outer sleeve is sealingly sleeved on the internal threaded sleeve. The end of the internal threaded sleeve away from the pressure plate is provided with a pushing portion. The pushing portion abuts against the sealing outer sleeve and rotates with the sealing outer sleeve. The pushing portion rotates with the internal threaded sleeve to press the sealing outer sleeve against the pressure plate.

[0007] In one possible implementation, the pushing portion includes a pushing plate fixed to the end of the internal threaded sleeve away from the pressure plate, and a mounting groove is provided at the end of the sealing sleeve away from the pressure plate. A thrust bearing is provided in the mounting groove, and the sealing sleeve is abutted against the pushing plate through the thrust bearing and can rotate relatively along the internal threaded sleeve.

[0008] In one possible implementation, a sealing sleeve extending toward one side of the pressure plate is provided on the circumference of the push plate, an end block is provided at the end of the internal threaded sleeve away from the pressure plate, the mounting groove is opened on the side of the end block close to the push plate, and the outer wall of the end block is sealed with the inner wall of the sealing sleeve.

[0009] In a possible implementation, a clamping groove is circumferentially formed on the inner wall of the sealing sleeve, a clamping spring is provided in the clamping groove, and the inner diameter of the clamping spring is smaller than the outer diameter of the end block, for preventing the end block from detaching from the sealing sleeve.

[0010] In a possible implementation, a first sealing groove is circumferentially formed on an outer wall of the end block, and a first sealing ring is installed in the first sealing groove and seals with the inner wall of the sealing sleeve.

[0011] In a possible implementation, a plurality of handle rods are provided on the outer periphery of the sealing sleeve, and the handle rods are inclined from one end connected to the sealing sleeve toward a side away from the pressure plate.

[0012] In a possible implementation, a second sealing groove is circumferentially formed on the outer wall of the internal threaded sleeve close to the pressure plate, and a second sealing ring is provided in the second sealing groove to seal with the inner wall of the sealing sleeve.

[0013] In a possible implementation, a groove is formed on an end surface of the pressure plate away from the locking seat, and the sealing sleeve is pressed tightly into the groove.

[0014] In a possible implementation, a plurality of sealing mechanisms are provided on the pressure plate, and the plurality of locking structures and the plurality of sealing handles in the plurality of sealing mechanisms are provided in a one-to-one correspondence.

[0015] In one possible implementation, the sealing frame is an annular frame, and two parallel connecting arms are provided on one side of the annular frame, and a hinge shaft is provided between the connecting arms. The hinge shaft is hinged to a fixed seat installed on one side of the sealing port, and the sealing plate is installed on the side of the annular frame close to the sealing port through the two connecting arms, and the pressure plate is fixed on the other side of the annular frame.

[0016] The beneficial effect of the sealing door structure provided by the present invention is that, compared with the prior art, the sealing frame rotates to drive the sealing plate to engage with the sealing port of the equipment, and the corresponding locking structure and sealing handle are used in the sealing mechanism on the pressure plate on the other side of the sealing frame to lock and seal. Among them, the locking shaft passes through the coaxial locking hole and the end ring of the swing bolt, and the internal threaded sleeve cooperates with the screw thread of the swing bolt. When the internal threaded sleeve is rotated, the internal threaded sleeve rotates and moves along its axial direction toward the side of the pressure plate, continuously pressing the pressure plate. At this time, the pushing portion of the internal threaded sleeve presses the sealing sleeve, so that the end of the sealing sleeve is pressed against the pressure plate, and the sealing sleeve and the internal threaded sleeve are sealed together. In the sealing door structure provided by the present invention, the end of the sealing sleeve is pressed against the pressure plate and does not rotate with the internal threaded sleeve. The sealing sleeve and the pressure plate will not produce friction and debris. The sealing sleeve and the internal threaded sleeve are sealed together to seal and isolate from the external space, reduce dead corners, and facilitate cleaning and sterilization operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 A front view of a sealing door structure provided by an embodiment of the present invention;

[0019] Figure 2 A cross-sectional structural diagram of a sealing door structure provided by an embodiment of the present invention;

[0020] Figure 3 A structural schematic diagram of a sealing mechanism provided in an embodiment of the present invention.

[0021] Description of reference numerals:

[0022] 1. Sealing plate; 2. Sealing frame; 3. Fixed seat; 4. Sealing mechanism; 5. Sealing port; 6. Sealing door gasket; 7. Locking seat; 8. Pressure plate; 41. Locking shaft; 42. Visible bolt; 43. Second sealing ring; 44. Sealing sleeve; 45. Internal threaded swivel sleeve; 46. Circlip; 47. First sealing ring; 48. Thrust bearing; 49. Handle rod. DETAILED DESCRIPTION

[0023] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0024] See also Figures 1 to 3 The sealing door structure provided by the present invention is now described. The sealing door structure includes a sealing frame 2, to which is connected a sealing plate 1 for sealing a sealing opening 5. One side of the sealing frame 2 is hinged to one side of the sealing opening 5, and the other side of the sealing frame 2 is provided with a pressure plate 8. The pressure plate 8 is provided with a sealing mechanism 4. The sealing mechanism 4 includes a corresponding locking structure and a sealing handle; the locking structure includes a locking seat 7, a swing bolt 42, and a locking shaft 41. The locking seat 7 is installed on the other side of the sealing opening 5. The locking seat 7 is provided with a locking hole. The swing bolt 42 vertically penetrates the pressure plate 8. The end ring of the swing bolt 42 is coaxially arranged with the locking hole. The screw of the movable bolt 42 is located on the side of the pressure plate 8 away from the locking seat 7, and the locking shaft 41 passes through the locking hole and the end ring; the sealing handle includes an internal threaded sleeve 45 and a sealing sleeve 44, the internal threaded sleeve 45 is arranged on the side of the pressure plate 8 away from the locking seat 7 and is threadedly sleeved on the screw, the sealing sleeve 44 is sealingly sleeved on the internal threaded sleeve 45, and the end of the internal threaded sleeve 45 away from the pressure plate 8 is provided with a pushing portion, the pushing portion abuts against the sealing sleeve 44 and rotates with the sealing sleeve 44, the pushing portion rotates with the internal threaded sleeve 45 to press the sealing sleeve 44 onto the pressure plate 8.

[0025] The present invention provides a sealing door structure. Compared with the prior art, the sealing frame 2 rotates to drive the sealing plate 1 to engage with the sealing port 5 of the equipment. The corresponding locking structure and sealing handle in the sealing mechanism 4 on the pressure plate 8 on the other side of the sealing frame 2 are used to lock and seal. Among them, the locking shaft 41 passes through the coaxial locking hole and the end ring of the swing bolt 42, and the internal threaded sleeve 45 cooperates with the screw thread of the swing bolt 42. When the internal threaded sleeve 45 is rotated, the internal threaded sleeve 45 rotates and moves along its axial direction toward the side of the pressure plate 8, continuously pressing the pressure plate 8. At this time, the pushing portion of the internal threaded sleeve 45 presses the sealing sleeve 44, so that the end of the sealing sleeve 44 is pressed against the pressure plate 8, and the sealing sleeve 44 and the internal threaded sleeve 45 are sealed and cooperated. The sealing door structure provided by the present invention has an end portion of the sealing sleeve 44 pressed tightly against the pressure plate 8 and does not rotate with the internal threaded rotating sleeve 45. The sealing sleeve 44 and the pressure plate 8 will not produce friction and debris. The sealing sleeve 44 and the internal threaded rotating sleeve 45 are sealed together to seal and isolate from the external space, reduce dead angles, and facilitate cleaning and sterilization operations.

[0026] Reference Figure 1 and Figure 2 The sealing frame 2 is a ring-shaped frame, and a hinge mechanism and a sealing mechanism 4 are respectively provided on the left and right sides of the ring-shaped frame. The front side of the ring-shaped frame is connected to a sealing plate 1, and the shape of the sealing plate 1 is adapted to the shape of the sealing port 5. In addition, a sealing door gasket 6 is provided at the port of the sealing plate 1 and the sealing port 5 to ensure the sealing effect of the sealing port 5 and the sealing plate 1.

[0027] Two parallel connecting arms are welded to the left side of the annular frame. Through-holes are provided at the ends of the connecting arms, through which the hinge shaft is mounted. A fixing base 3 is welded to one side of the sealing opening 5. A through-hole is provided in the fixing base 3, through which the hinge shaft passes, thereby achieving hinged connection between one side of the annular frame and the other side of the sealing opening 5.

[0028] The upper and lower sides of the annular frame are respectively bolted with connecting plates, and the sealing plate 1 is welded to the ends of the two connecting rod plates. The annular frame is rotated to the rear side of the sealing port 5 through the hinge structure on the left, so that the sealing plate 1 is buckled on the sealing port 5.

[0029] A pressing plate 8 is provided on the right side of the annular frame and is welded to the rear side of the annular frame. The pressing plate 8 is a wedge-shaped plate with a width symmetrically decreasing from left to right. The sealing mechanism 4 is located at the right end of the wedge-shaped plate.

[0030] In order to improve the sealing effect, the width of the pressure plate 8 can be increased. At this time, the pressure plate 8 is a rectangular plate or a wedge-shaped plate with increasing width from left to right. Multiple sealing mechanisms 4 are set at the end of the pressure plate 8, and multiple sealing mechanisms 4 cooperate to perform sealing at the same time.

[0031] One end of the pivot bolt 42 is a screw rod, and the other end is an end ring. The end of the screw rod near the end ring has a plain rod section without threads. The plain rod section of the pivot bolt 42 vertically penetrates the reserved hole of the pressure plate 8 and can slide axially along the reserved hole. A locking seat 7 is installed on the other side of the sealing port 5. Two locking seats 7 are arranged at intervals, and the two locking seats 7 have corresponding through holes. The end ring of the pivot bolt 42 is located between the two locking seats 7. The center hole of the end ring is coaxial with the through holes of the two locking seats 7. At this time, the locking shaft 41 sequentially penetrates the through holes of the two locking seats 7 and the center hole of the end ring. The screw rod of the pivot bolt 42 is located on the rear side of the pressure plate 8, that is, on the side away from the sealing plate 1. A threaded blind hole is opened in the middle of the internal threaded sleeve 45. The internal threaded sleeve 45 is threaded onto the screw rod through the threaded blind hole.

[0032] Specifically, the push portion includes a push plate, which is integrally formed at the end of the internally threaded sleeve 45 away from the pressure plate 8. The push plate is a circular plate, and a sealing sleeve is integrally formed on its outer periphery. The sealing sleeve extends toward the pressure plate 8 and forms an annular chamber with the outer wall of the internally threaded sleeve 45. The end of the sealing sleeve 44 away from the pressure plate 8 is integrally formed with an end block. The end block is an annular block and is inserted into the annular chamber. The outer wall of the annular block fits with the inner wall of the sealing sleeve, and the inner wall of the annular block fits with the outer wall of the internally threaded sleeve 45. An annular groove is defined on the end surface of the annular block away from the pressure plate 8. A thrust bearing 48 is mounted in the annular groove. One end of the thrust bearing 48 abuts the bottom of the annular groove and the other end abuts the push plate, allowing the sealing sleeve 44 to rotate relative to the internally threaded sleeve 45. The thrust bearing 48 can reduce the friction of the locking mechanism during locking and can withstand the large compressive force between the sealing sleeve 44 and the push plate during locking.

[0033] A plurality of handle rods 49 are welded and fixed circumferentially on the outer wall of the sealing sleeve to facilitate the operator to rotate the internal threaded rotating sleeve 45. The handle rod 49 is inclined from the end connected to the sealing sleeve to the side away from the pressure plate 8, which can provide more operating space for holding the handle rod 49.

[0034] Optionally, a corresponding connection structure can be provided at the end of the internal threaded sleeve 45 away from the pressure plate 8, and connected to the output end of the motor through the connection structure, such as a key connection structure, to achieve electric rotation of the internal threaded sleeve 45.

[0035] To ensure a good seal between the sealing sleeve 44 and the internally threaded rotating sleeve 45, a first sealing groove is defined in the circumferential outer wall of the end block. A first sealing ring 47 is installed in the first sealing groove, sealing between the end block and the sealing sleeve. Simultaneously, a second sealing groove is defined in the circumferential outer wall of the internally threaded rotating sleeve 45 on the side closest to the pressure plate 8. A second sealing ring 43 is installed in the second sealing groove, sealing between the internally threaded rotating sleeve 45 and the sealing sleeve 44. Clearly, the first sealing ring 47 and the second sealing ring 43 seal on both sides of the internally threaded rotating sleeve 45 and the sealing sleeve 44, respectively, ensuring a good seal between the internally threaded rotating sleeve 45 and the sealing sleeve 44.

[0036] In addition, a snap-fit ​​groove is provided on the inner wall of the sealing sleeve in the circumferential direction, and a snap spring 46 is installed in the snap-fit ​​groove. Since the inner diameter of the snap spring 46 is smaller than the outer diameter of the end block, the snap spring 46 can prevent the end block from escaping from the open end of the sealing sleeve close to the pressure plate 8.

[0037] A groove is provided on the end face of the pressure plate 8 away from the sealing opening 5. The groove is a circular countersunk groove. The inner diameter of the countersunk groove is slightly larger than the outer diameter of the sealing sleeve 44. The end of the sealing sleeve 44 abuts against the bottom of the countersunk groove, which can prevent the sealing sleeve 44 from sliding laterally and detaching from the pressure plate 8.

[0038] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A sealed door structure, characterized in that: The invention comprises a sealing frame (2), a sealing plate (1) for sealing a sealing opening (5) being connected to the sealing frame (2), one side of the sealing frame (2) being hinged to one side of the sealing opening (5), a pressing plate (8) being provided on the other side of the sealing frame (2), a sealing mechanism (4) being provided on the pressing plate (8), and the sealing mechanism (4) comprising a corresponding locking structure and a sealing handle; The locking structure includes a locking seat (7), a movable bolt (42) and a locking shaft (41); the locking seat (7) is installed on the other side of the sealing port (5); a locking hole is provided on the locking seat (7); the movable bolt (42) vertically penetrates the pressure plate (8); the end ring of the movable bolt (42) is coaxially arranged with the locking hole; the screw of the movable bolt (42) is located on the side of the pressure plate (8) away from the locking seat (7); and the locking shaft (41) penetrates the locking hole and the end ring; The sealing handle includes an internal threaded sleeve (45) and a sealing sleeve (44), wherein the internal threaded sleeve (45) is arranged on a side of the pressure plate (8) away from the locking seat (7) and is threadedly sleeved on the screw, and the sealing sleeve (44) is sealingly sleeved on the internal threaded sleeve (45), and an end of the internal threaded sleeve (45) away from the pressure plate (8) is provided with a pushing portion, the pushing portion abuts against the sealing sleeve (44) and rotates with the sealing sleeve (44), and the pushing portion rotates with the internal threaded sleeve (45) to press the sealing sleeve (44) onto the pressure plate (8); The pushing portion includes a pushing plate fixed to an end of the internal threaded rotating sleeve (45) away from the pressure plate (8), a mounting groove is provided at an end of the sealing sleeve (44) away from the pressure plate (8), a thrust bearing (48) is provided in the mounting groove, and the sealing sleeve (44) is in contact with the pushing plate through the thrust bearing (48) and can rotate relatively along the internal threaded rotating sleeve (45); The circumference of the push plate is provided with a sealing sleeve extending toward one side of the pressure plate (8); an end block is provided at one end of the internal threaded rotating sleeve (45) away from the pressure plate (8); the mounting groove is provided on a side of the end block close to the push plate; the outer wall of the end block is in sealing cooperation with the inner wall of the sealing sleeve; A clamping groove is provided on the inner wall of the sealing sleeve in the circumferential direction, and a clamping spring (46) is provided in the clamping groove. The inner diameter of the clamping spring (46) is smaller than the outer diameter of the end block, and is used to prevent the end block from being separated from the sealing sleeve. The end surface of the pressure plate (8) away from the locking seat (7) is provided with a groove, and the sealing sleeve (44) is pressed tightly into the groove.

2. A sealed door structure according to claim 1, characterized in that: A first sealing groove is provided in the circumferential direction of the outer wall of the end block, and a first sealing ring (47) is installed in the first sealing groove to seal with the inner wall of the sealing sleeve.

3. A sealed door structure according to claim 1, characterized in that: A plurality of handle rods (49) are provided on the outer periphery of the sealing sleeve, and the handle rods (49) are inclined from one end connected to the sealing sleeve toward a side away from the pressure plate (8).

4. A sealed door structure according to claim 1, characterized in that: A second sealing groove is provided in the circumferential direction of the outer wall of the internal thread rotating sleeve (45) close to the pressure plate (8), and a second sealing ring (43) is provided in the second sealing groove and is sealed with the inner wall of the sealing sleeve (44).

5. A sealed door structure according to any one of claims 1 to 4, characterized in that: A plurality of sealing mechanisms (4) are provided on the pressure plate (8), and the plurality of locking structures and the plurality of sealing handles in the plurality of sealing mechanisms (4) are all provided in a one-to-one correspondence.

6. A sealed door structure according to any one of claims 1 to 4, characterized in that: The sealing frame (2) is an annular frame, and one side of the annular frame is provided with two parallel connecting arms, a hinge shaft is provided between the connecting arms, and the hinge shaft is hinged to a fixing seat (3) installed on one side of the sealing opening (5). The sealing plate (1) is installed on the side of the annular frame close to the sealing opening (5) through the two connecting arms, and the pressure plate (8) is fixed on the other side of the annular frame.

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