Top opening type vacuum drying machine

Abstract

The utility model discloses a top opening type vacuum dryer, which comprises a cabinet body, a vacuum pump and a drying box, the drying box is of a box-shaped structure, a pick-and-place opening is arranged at the top of the drying box, and a sliding cover matched with the pick-and-place opening and a sliding cover driving mechanism used for driving the sliding cover are arranged at the top of the cabinet body. By the adoption of the top opening type vacuum drying machine, objects can be taken and placed from the top of the vacuum drying machine, the bending amplitude of an operator is reduced, the convenience of taking and placing the objects is improved, the risk of lumbar vertebra injury of the operator is reduced, the sliding cover can be controlled to be opened and closed through the sliding cover driving mechanism, electric opening and closing of the sliding cover are achieved, and the working efficiency is improved. And meanwhile, the sealing ring is arranged and matched with the downward pressing action of the sliding cover driving mechanism when the sliding cover is closed, so that the sealing performance of the drying box can be ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of vacuum drying equipment, in particular to a top-opening vacuum drying machine. Background Art

[0002] Please refer to Chinese patent CN202322074635.3. Existing vacuum dryers all use a side-opening door, which requires operators to bend down significantly when taking and placing items. This is not only inconvenient, but also may cause lumbar spine injuries when taking and placing heavy items.

[0003] In addition, the cabinet doors of existing vacuum dryers are all opened and closed manually, which is the worst in terms of operational convenience when placing items into the drying box. The items need to be placed aside first, the door opened manually, the items placed in the drying box, and finally the door closed manually.

[0004] Solving the above problems has become a top priority. Utility Model Content

[0005] In order to solve the technical problem that the existing vacuum dryers all have side-opening doors and adopt a manual door opening and closing method, resulting in poor convenience in use, the utility model provides a top-opening vacuum dryer.

[0006] The technical solution is as follows:

[0007] A first aspect of the present application relates to a top-opening vacuum dryer, comprising a cabinet, a vacuum pump and a drying box both installed in the cabinet, wherein the vacuum pump can continuously extract air from the drying box, the drying box is a box-shaped structure, and a take-in and put-out opening is provided on the top thereof, at least one circle of sealing rings surrounding the take-in and put-out opening is installed on the top of the drying box, a clearance opening located directly above the take-in and put-out opening is provided on the top of the cabinet, a sliding cover adapted to the take-in and put-out opening and a sliding cover driving mechanism for driving the sliding cover are installed on the top of the cabinet, the sliding cover can be driven by the sliding cover driving mechanism to translate from the inside of the cabinet to the top of the take-in and put-out opening, and pressed downwardly on the sealing ring with an interference fit, and can also be driven by the sliding cover driving mechanism to move upward away from the sealing ring and translate into the cabinet, so that the take-in and put-out opening is exposed at the clearance opening.

[0008] By adopting the above top-opening vacuum dryer, not only can the items be taken and placed from the top of the vacuum dryer, reducing the bending range of the operator, improving the convenience of taking and placing the items, and reducing the risk of causing lumbar spine injury to the operator, but also the opening and closing of the sliding cover can be controlled by the sliding cover driving mechanism to realize the electric opening and closing of the sliding cover, further improving the convenience of the operator taking and placing the items. At the same time, by providing a sealing ring and cooperating with the downward pressing action of the sliding cover driving mechanism when closing the sliding cover, the sealing performance of the drying box can be ensured.

[0009] In some embodiments, sliding cover pulleys are installed on the outer edges of both ends of the sliding cover in the translation direction, and the groove walls on both sides of the give way opening along the translation direction of the sliding cover are recessed to form sliding cover pulley grooves that are compatible with the corresponding sliding cover pulleys, the inner ends of the two sliding cover pulley grooves extend inward to the interior of the cabinet, the middle parts of the sliding cover pulley grooves are recessed downward to form inner end positioning grooves that are compatible with the corresponding sliding cover pulleys, and the outer ends of the sliding cover pulley grooves are obliquely extended downward to form outer end guide inclined grooves that are compatible with the corresponding sliding cover pulleys, the bottom of the inner end positioning groove is at the same height as the bottom of the outer end guide inclined groove, and the two outer end guide inclined grooves respectively divide the corresponding sliding cover pulley groove into a covering sliding section and an opening sliding section, and the inner end positioning groove and the outer end guide inclined groove are respectively located at the two ends of the corresponding covering sliding section.

[0010] In some embodiments, the sliding cover driving mechanism includes a driving shaft, a driving cylinder for driving the driving shaft, and two driving shaft pulley grooves respectively arranged below the corresponding opening cover sliding sections, and driving shaft pulleys are respectively installed at both ends of the driving shaft and can be rotatably installed in the corresponding driving shaft pulley grooves, and a cylinder connecting arm and at least one sliding cover connecting arm are fixedly connected to the driving shaft, and the driving cylinder is installed below one of the closing cover sliding sections in the horizontal direction, and the outer end of the piston rod of the driving cylinder is hinged to the outer end of the cylinder connecting arm, and the inner end of the sliding cover in the translation direction is installed with connecting pieces respectively matched with the corresponding sliding cover connecting arms, and the outer ends of each sliding cover connecting arm are respectively hinged to the corresponding connecting pieces.

[0011] In some embodiments, a circle of sliding cover support plate is provided on the top of the drying box around the opening for taking and placing, and the upper surface of the sliding cover support plate is recessed to form sealing ring installation grooves respectively adapted to the corresponding sealing rings, and each sealing ring is installed in the corresponding sealing ring installation groove so as to protrude upward.

[0012] In some embodiments, the air inlet of the vacuum pump is connected to the exhaust port of the drying box through an exhaust pipe, and a first on-off control valve and a branch pipe located between the first on-off control valve and the exhaust port of the drying box are installed on the exhaust pipe, and a second on-off control valve is installed on the branch pipe. The air inlet of the drying box is connected to an air inlet pipe, and a third on-off control valve is installed on the air inlet pipe.

[0013] In some embodiments, a plurality of height-adjustable feet are installed at the bottom of the cabinet. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the structure of a top-opening vacuum dryer;

[0015] Figure 2 is a cross-sectional view of a top-opening vacuum dryer;

[0016] Figure 3 This is a schematic diagram of a top-opening vacuum dryer after part of the cabinet is removed;

[0017] Figure 4 for Figure 3 The enlarged view of point A in the middle;

[0018] Figure 5 It is a schematic diagram of the matching relationship between the sliding cover pulley groove and the driving shaft pulley groove;

[0019] Figure 6 This is a schematic diagram of the coordination between the vacuum pump, drying box and their related components. DETAILED DESCRIPTION

[0020] The utility model is further described below in conjunction with embodiments and drawings.

[0021] like Figure 1-Figure 6 As shown, a top-opening vacuum dryer mainly comprises a cabinet 1, a vacuum pump 2 and a drying box 3, wherein the vacuum pump 2 and the drying box 3 are both installed in the cabinet 1. The vacuum pump 2 can continuously extract the air in the drying box 3, so that the interior of the drying box 3 is in a vacuum environment, and at the same time, the articles in the drying box 3 are dried.

[0022] See also Figure 2 The drying box 3 in this embodiment is a box body with an open top structure, that is, a take-in and put-out opening 3a is provided on the top of the drying box 3, and correspondingly, a make-way opening 1a is provided on the top of the cabinet 1 and is located directly above the take-in and put-out opening 3a, so that objects can be taken in and put out from the top of the vacuum dryer, which reduces the bending range of the operator, improves the convenience of taking in and putting out objects, and reduces the risk of causing lumbar injury to the operator.

[0023] In addition, at least one circle of sealing ring 4 surrounding the access opening 3a is installed on the top of the drying box 3, and a sliding cover 5 adapted to the access opening 3a and a sliding cover driving mechanism for driving the sliding cover 5 are installed on the top of the cabinet 1. The sliding cover 5 can be translated from the inside of the cabinet 1 to the top of the access opening 3a under the drive of the sliding cover driving mechanism, and pressed downward on the sealing ring 4 with an interference fit, that is, when the sliding cover 5 is translated to the top of the access opening 3a, it will simultaneously press downward on the sealing ring 4, so that the gap between the top surface of the drying box 3 and the bottom surface of the sliding cover 5 is sealed by the sealing ring 4. At the same time, the sliding cover 5 can be driven by the sliding cover driving mechanism to move upward away from the sealing ring 4 and translate into the cabinet 1, so that the access opening 3a is exposed at the make way opening 1a, so as to facilitate the access to and placement of items in the drying box 3.

[0024] Therefore, the present embodiment can control the opening and closing of the slide cover 5 through the slide cover driving mechanism, realize the electric opening and closing of the slide cover 5, and further improve the convenience of the operator to take and put the items. At the same time, by providing the sealing ring 4 and cooperating with the downward pressing action of the slide cover driving mechanism when closing the slide cover 5, the sealing performance of the drying box 3 can be ensured.

[0025] Furthermore, a circle of sliding cover support plate 3b is provided on the top of the drying box 3 around the opening 3a for taking and placing, and the upper surface of the sliding cover support plate 3b is recessed to form sealing ring installation grooves 3b1 respectively adapted to the corresponding sealing rings 4. Each sealing ring 4 is installed in the corresponding sealing ring installation groove 3b1 in an upwardly protruding manner, thereby ensuring the reliable installation of the sealing ring 4 and making the sliding cover 5 contact with the sliding cover support plate 3b, thereby further improving the sealing performance and the stability of the closed state of the sliding cover 5.

[0026] In this embodiment, the upper surface of the sliding cover support plate 3b is only recessed to form a circle of sealing ring installation groove 3b1, which can ensure reliable sealing and has low cost.

[0027] Sliding cover pulleys 6 are installed on both sides of the outer edges of the two ends of the sliding cover 5 in the translation direction, and the groove walls on both sides of the opening 1a along the translation direction of the sliding cover 5 are recessed to form sliding cover pulley grooves 1b that are compatible with the corresponding sliding cover pulleys 6. The inner ends of the two sliding cover pulley grooves 1b extend inwardly to the interior of the cabinet 1, and the middle parts of the sliding cover pulley grooves 1b are recessed downward to form inner end positioning grooves 1b1 that are compatible with the corresponding sliding cover pulleys 6. The outer ends of 1b extend obliquely downward to form outer end guiding inclined grooves 1b2 matched with the corresponding sliding cover pulley 6, the bottom of the inner end positioning groove 1b1 is at the same height as the bottom of the outer end guiding inclined grooves 1b2, and the two outer end guiding inclined grooves 1b2 respectively divide the corresponding sliding cover pulley groove 1b into a covering sliding section 1b3 and an opening sliding section 1b4, and the inner end positioning groove 1b1 and the outer end guiding inclined groove 1b2 are respectively located at the two ends of the corresponding covering sliding section 1b3.

[0028] Therefore, when the two sliding cover pulleys 6 at the outer end are respectively located at the bottom of the corresponding outer end guide inclined groove 1b2, and the two sliding cover pulleys 6 at the inner end are respectively located at the corresponding inner end positioning groove 1b1, the sliding cover 5 is pressed against the sealing ring 4 with interference fit, ensuring the reliability of the seal. When the four sliding cover pulleys 6 are all supported on the cover opening sliding section 1b4, the sliding cover 5 does not block the access opening 3a at all, and the items in the drying box 3 can be easily accessed.

[0029] The inner end positioning groove 1b1 is a narrow groove structure, and its width is adapted to the sliding cover pulley 6, which can reliably position the sliding cover pulley 6. The outer end guiding inclined groove 1b2 is a gentle slope structure, and such a design can improve the stability of the sliding cover 5 in operation.

[0030] See also Figure 2-Figure 5 The sliding cover driving mechanism includes a driving shaft 7, a driving cylinder 8 for driving the driving shaft 7, and two driving shaft pulley grooves 1c respectively arranged under the corresponding opening cover sliding sections 1b4. Both ends of the driving shaft 7 are equipped with driving shaft pulleys 9 respectively and rollably installed in the corresponding driving shaft pulley grooves 1c. A cylinder connecting arm 7a and at least one sliding cover connecting arm 7b are fixedly connected to the driving shaft 7. The driving cylinder 8 is installed below one of the closing cover sliding sections 1b3 in the horizontal direction, and the outer end of the piston rod of the driving cylinder 8 is hinged to the outer end of the cylinder connecting arm 7a. The inner end of the sliding cover 5 in the translation direction is equipped with connecting pieces 5a respectively matched with the corresponding sliding cover connecting arms 7b, and the outer ends of each sliding cover connecting arm 7b are respectively hinged to the corresponding connecting pieces 5a.

[0031] The extension and retraction of the piston rod of the driving cylinder 8 can force the driving shaft pulleys 9 at both ends of the driving shaft 7 to slide along the corresponding driving shaft pulley grooves 1c. At the same time, the driving shaft 7 drives the sliding cover 5 to rise and fall and translate through the sliding cover connecting arm 7b, wherein the lifting and lowering of the sliding cover 5 is achieved by the relative rotation of the sliding cover connecting arm 7b, which is not only very clever but also has a simple and reliable structure.

[0032] In this embodiment, two sliding cover connecting arms 7b are provided, and the two sliding cover connecting arms 7b are respectively close to the two ends of the driving shaft 7, thereby ensuring the stability of the driving shaft 7 pulling the sliding cover 5 and avoiding the problem of deflection and jamming.

[0033] See also Figure 2 and Figure 6 The air inlet of the vacuum pump 2 is connected to the exhaust port of the drying box 3 through the exhaust pipe 10. The exhaust pipe 10 is equipped with a first on-off control valve 11 and a branch pipe 12 located between the first on-off control valve 11 and the exhaust port of the drying box 3. The branch pipe 12 is equipped with a second on-off control valve 13. The air inlet of the drying box 3 is connected to an air inlet pipe 14, and the air inlet pipe 14 is equipped with a third on-off control valve 15.

[0034] When the second on-off control valve 13 and the third on-off control valve 15 are closed and the first on-off control valve 11 is opened, the vacuum pump 2 can exhaust the air in the drying box 3 through the exhaust pipe 10, ensuring that the drying box 3 is in a continuous vacuum state, which is simple and reliable. When the second on-off control valve 13 and the third on-off control valve 15 are closed, the drying box 3 can be quickly restored to a non-vacuum state, which is convenient for taking and placing items.

[0035] See also Figure 1-Figure 3 The bottom of the cabinet 1 is provided with a plurality of height-adjustable feet 16 that can be raised and lowered. Since the height of the height-adjustable feet 16 is adjustable, it is particularly suitable for uneven ground, thus ensuring the stability of the cabinet 1.

[0036] See also Figure 1 and Figure 6 An electric control cabinet 17 is also installed in the cabinet body 1, and an electric control cabinet door 1d adapted to the electric control cabinet 17 is opened on the cabinet body 1 to facilitate the operation and maintenance of the electric control cabinet 17.

[0037] In this embodiment, the bottom of the cabinet 1 is hollowed out to facilitate smooth exhaust of the vacuum pump 2 .

[0038] Finally, it should be noted that the above description is only a preferred embodiment of the present invention. Under the guidance of the present invention, ordinary technicians in this field can make a variety of similar expressions without violating the purpose and claims of the present invention, and such changes fall within the scope of protection of the present invention.

Claims

1. A top-opening vacuum dryer, comprising a cabinet (1) and a vacuum pump (2) and a drying box (3) both installed in the cabinet (1), wherein the vacuum pump (2) is capable of continuously extracting air from the drying box (3), and is characterized in that: The drying box (3) is a box-shaped structure, and is provided with a take-in / put-out opening (3a) on its top. The top of the drying box (3) is provided with at least one sealing ring (4) surrounding the take-in / put-out opening (3a). The top of the cabinet (1) is provided with a clearance opening (1a) located directly above the take-in / put-out opening (3a). The top of the cabinet (1) is provided with a sliding cover (5) matched with the take-in / put-out opening (3a) and a sliding cover driving mechanism for driving the sliding cover (5). The sliding cover (5) can be driven by the sliding cover driving mechanism to move horizontally from the inside of the cabinet (1) to the top of the take-in / put-out opening (3a) and to be pressed downwardly on the sealing ring (4) with an interference fit. It can also be driven by the sliding cover driving mechanism to move upward away from the sealing ring (4) and move horizontally into the cabinet (1) so that the take-in / put-out opening (3a) is exposed at the clearance opening (1a).

2. The top-opening vacuum dryer according to claim 1, characterized in that: Sliding cover pulleys (6) are installed on both sides of the outer edges of the two ends of the sliding cover (5) in the translation direction. The groove walls on both sides of the opening (1a) along the translation direction of the sliding cover (5) are recessed to form sliding cover pulley grooves (1b) that are compatible with the corresponding sliding cover pulleys (6). The inner ends of the two sliding cover pulley grooves (1b) extend inwardly to the interior of the cabinet (1). The middle parts of the sliding cover pulley grooves (1b) are recessed downward to form inner end positioning grooves (1b1) that are compatible with the corresponding sliding cover pulleys (6). The outer ends of the grooves (1b) extend obliquely downward to form outer end guiding inclined grooves (1b2) adapted to the corresponding sliding cover pulleys (6); the bottom of the inner end positioning groove (1b1) is at the same height as the bottom of the outer end guiding inclined grooves (1b2); the two outer end guiding inclined grooves (1b2) respectively divide the corresponding sliding cover pulley grooves (1b) into a covering sliding section (1b3) and an opening sliding section (1b4); the inner end positioning groove (1b1) and the outer end guiding inclined groove (1b2) are respectively located at the two ends of the corresponding covering sliding section (1b3).

3. The top-opening vacuum dryer according to claim 2, characterized in that: The sliding cover driving mechanism comprises a driving shaft (7), a driving cylinder (8) for driving the driving shaft (7), and two driving shaft pulley grooves (1c) respectively arranged below the corresponding opening cover sliding sections (1b4); driving shaft pulleys (9) respectively and rollably mounted in the corresponding driving shaft pulley grooves (1c) are mounted at both ends of the driving shaft (7); a cylinder connecting arm (7a) and at least one sliding cover connecting arm (7b) are fixedly connected to the driving shaft (7); the driving cylinder (8) is mounted below one of the closing cover sliding sections (1b3) in the horizontal direction, and the outer end of the piston rod of the driving cylinder (8) is hinged to the outer end of the cylinder connecting arm (7a); the inner end of the sliding cover (5) in the translation direction is mounted with connecting pieces (5a) respectively matched with the corresponding sliding cover connecting arms (7b), and the outer ends of the sliding cover connecting arms (7b) are respectively hinged to the corresponding connecting pieces (5a).

4. The top-opening vacuum dryer according to claim 1, characterized in that: The top of the drying box (3) is provided with a circle of sliding cover support plates (3b) around the opening (3a) for taking and placing, and the upper surface of the sliding cover support plates (3b) is concavely formed with sealing ring installation grooves (3b1) respectively adapted to the corresponding sealing rings (4), and each sealing ring (4) is respectively installed in the corresponding sealing ring installation groove (3b1) in a manner of protruding upward.

5. The top-opening vacuum dryer according to claim 1, characterized in that: The air inlet of the vacuum pump (2) is connected to the exhaust port of the drying box (3) through an exhaust pipe (10); a first on-off control valve (11) and a branch pipe (12) located between the first on-off control valve (11) and the exhaust port of the drying box (3) are installed on the exhaust pipe (10); a second on-off control valve (13) is installed on the branch pipe (12); the air inlet of the drying box (3) is connected to an air inlet pipe (14); a third on-off control valve (15) is installed on the air inlet pipe (14).

6. The top-opening vacuum dryer according to claim 1, characterized in that: A plurality of height-adjustable legs (16) are installed at the bottom of the cabinet (1) and can be raised or lowered.

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