A sealing and locking device for the slag discharge door of an extraction tank

Abstract

The invention discloses a sealing locking device for a slag discharge door of an extraction tank, comprising a tank body and a slag discharge door which is sealed with the bottom of the tank body, wherein a rotating ring for locking the slag discharge door is rotatably provided at the lower end of the tank body, and at least one locking cylinder for locking the rotating ring on the tank body is provided on the tank body; a ratchet is fixed on the rotating ring, and a locking mechanism which cooperates with the ratchet is fixed on the tank body; a locking pawl on the locking mechanism presses against the ratchet teeth of the ratchet under the torsion of a locking torsion spring to prevent the rotating ring from rotating; when the locking cylinder which is used to lock the rotating ring on the tank body fails to operate, the locking cylinder which fails to operate cannot press against the rotating ring, and the rotating ring cannot rotate either by cooperating between the locking pawl and the ratchet teeth on the ratchet; the slag discharge door is effectively prevented from loosening, so as to prevent dangerous situations such as leakage of the extraction tank.

Description

Technical Field

[0001] The invention relates to the technical field of pharmaceutical machinery and equipment, and more particularly to a sealing locking device for a slag discharge door of an extraction tank. Background Art

[0002] The extraction tank is a commonly used leaching and extraction equipment in pharmaceutical and chemical industry, and is particularly suitable for the leaching and extraction of components contained in plant products. In order to facilitate the slag discharge operation after the extraction of the extract, the existing extraction tank is provided with a separate slag discharge door at the bottom of the extraction tank body. When extracting drugs, the slag discharge door needs to seal the bottom of the tank body.

[0003] The slag discharge door on the existing extraction tank is placed in the locking groove of the rotating ring at the lower end of the tank body through the locking rod on its edge, so that the slag discharge door and the tank body are sealed. In order to prevent the rotating ring from rotating and causing the locking rod to disengage from the opening of the locking groove, the rotating ring is locked by a locking cylinder to prevent the rotating ring from rotating. However, the locking cylinder is prone to air failure and cannot tightly support the rotating ring, causing the rotating ring to retreat and rotate, causing the locking rod on the slag discharge door to disengage from the locking groove, thereby loosening the slag discharge door, resulting in dangerous problems such as leakage at the bottom of the tank body. Summary of the invention

[0004] In view of the deficiencies in the prior art, an object of the present invention is to provide a sealing locking device for a slag discharge door of an extraction tank.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A sealing locking device for a slag discharge door of an extraction tank comprises a tank body and a slag discharge door which is sealed with the bottom of the tank body, a rotating ring for locking the slag discharge door is rotatably provided at the lower end of the tank body, and at least one locking cylinder for locking the rotating ring on the tank body is provided on the tank body; a ratchet is fixed on the rotating ring, and a locking mechanism which cooperates with the ratchet is fixed on the tank body;

[0007] The locking mechanism includes a pawl mounting plate fixed to the outer side wall of the tank body, a locking assembly for preventing the ratchet from rotating is installed on the pawl mounting plate, and the locking assembly includes a locking pawl and a locking torsion spring. The locking pawl is rotatably set on the pawl mounting plate via a rotating shaft, one end of the locking torsion spring abuts against the pawl mounting plate, and the other end abuts against the rotating shaft; the locking torsion spring applies a torque to the locking pawl in the direction of the ratchet, so that the end of the locking pawl presses against the ratchet teeth of the ratchet to prevent the rotating ring from rotating.

[0008] The present invention further provides that: a ratchet pawl alignment connecting rod is provided on the rotating shaft, wherein one end of the locking torsion spring abuts against the ratchet pawl alignment connecting rod.

[0009] The present invention further provides that: locking components are respectively installed at the two ends of the pawl mounting plate, wherein two pawl co-location connecting rods on the two rotating shafts are arranged facing each other.

[0010] The present invention is further provided that: an unlocking assembly is installed on the pawl mounting plate, and the unlocking assembly includes an unlocking swing rod and an unlocking cylinder driving the unlocking swing rod to swing, and the unlocking swing rod is interspersed between the two pawl synchronizing connecting rods, and the two ends of the unlocking swing rod can push the two pawl synchronizing connecting rods respectively at the same time, so that the two rotating shafts drive the corresponding locking pawls to swing back to the ratchet at the same time to release the lock of the ratchet.

[0011] The present invention further provides that: unlocking rollers are rotatably provided at both ends of the unlocking swing lever, and the unlocking rollers are arranged opposite to the ratchet pawl co-position connecting rod; when the unlocking swing lever swings around the central axis, the unlocking rollers roll on the corresponding ratchet pawl co-position connecting rod.

[0012] The present invention further provides that: the unlocking swing rod is L-shaped, wherein two unlocking rollers are respectively arranged at the two ends of the horizontal axis of the unlocking swing rod, and the pushing rod of the unlocking cylinder is hinged to the upper end of the longitudinal axis of the unlocking swing rod.

[0013] The present invention further provides that: two locking mechanisms are fixed on the tank body, wherein two pawl mounting plates of the two locking mechanisms are respectively fixed to two end portions of a fixing plate, and the fixing plate is welded to the outer side wall of the tank body.

[0014] The present invention is further configured such that the distances between the ends of the four locking pawls on the two locking mechanisms and the matching end faces of the corresponding ratchet teeth become smaller in sequence.

[0015] The present invention further provides that: a plurality of rotating rollers are circumferentially rotatably arranged on the inner side wall of the rotating ring, and the rotating ring is rotatably arranged on the tank body through the rotating rollers.

[0016] The present invention further provides that: two lifting cylinders for lifting the slag discharge door are arranged at intervals on the outer side wall of the tank body, and the lifting cylinders drive the slag discharge door to move upward to cooperate with the tank body.

[0017] The beneficial effects of the present invention are as follows: a ratchet is fixed on a rotating ring for locking the slag discharge door, and a locking assembly for preventing the ratchet from rotating is installed on a pawl mounting plate fixed on the outer wall of the tank body; a locking torsion spring on the locking assembly applies a torque to the locking pawl in the direction of the ratchet, so that the end of the locking pawl rotatably arranged on the pawl mounting plate can firmly press against the ratchet teeth of the ratchet; when the locking cylinder used to lock the rotating ring on the tank body fails to operate, the locking cylinder that fails to operate cannot press against the rotating ring, and the rotating ring cannot rotate by cooperating with the ratchet teeth on the ratchet; the slag discharge door can be effectively prevented from loosening, so as to prevent dangerous situations such as leakage in the extraction tank. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A structural diagram of a sealing locking device for a slag discharge door of an extraction tank according to the present invention Figure 1 ;

[0019] Figure 2 A structural diagram of a sealing locking device for a slag discharge door of an extraction tank according to the present invention Figure 1 ;

[0020] Figure 3 A structural diagram of a sealing locking device for a slag discharge door of an extraction tank according to the present invention Figure 2 ;

[0021] Figure 4 A diagram showing the coordination of a ratchet and a locking mechanism of a sealing locking device for a slag discharge door of an extraction tank according to the present invention;

[0022] Figure 5 A structural schematic diagram of a locking mechanism of a sealing locking device for a slag discharge door of an extraction tank according to the present invention Figure 1 ;

[0023] Figure 6 A structural schematic diagram of a locking mechanism of a sealing locking device for a slag discharge door of an extraction tank according to the present invention Figure 2 ;

[0024] Figure 7 A diagram showing the coordination of a locking pawl and a ratchet wheel of a sealing locking device for a slag discharge door of an extraction tank according to the present invention;

[0025] Explanation of the accompanying drawings: 1. Tank body; 11. Fixed plate; 12. Locking mechanism; 121. Ratchet mounting plate; 122. Locking assembly; 1221. Locking pawl; 1222. Rotating shaft; 12221. Ratchet co-location connecting rod; 1223. Locking torsion spring; 123. Unlocking assembly; 1231. Unlocking swing rod; 12311. Unlocking roller; 1232. Unlocking cylinder; 13. Rotating ring; 131. Rotating roller; 2. Slag discharge door; 21. Ratchet; 211. Ratchet; 2111. Mating end face; 2112. Sliding end face; 3. Lifting cylinder; 4. Locking cylinder. DETAILED DESCRIPTION

[0026] See attached Figures 1 to 7 The sealing and locking device of the slag discharge door of an extraction tank of the present invention is further described in detail.

[0027] A sealing locking device for a slag discharge door of an extraction tank comprises a tank body 1 and a slag discharge door 2 which is sealed with the bottom of the tank body 1, wherein a rotating ring 13 for locking the slag discharge door 2 is rotatably provided at the lower end of the tank body 1, and the rotating ring 13 is circumferentially provided with a plurality of locking grooves, and the slag discharge door 2 is provided with a locking rod which matches the plurality of locking grooves, and the slag discharge door 2 is locked in the locking groove and locked in the rotating ring 13 by the locking rod, and is sealed with the bottom of the tank body 1 through the rotating ring 13; two locking cylinders 4 for locking the rotating ring 13 on the tank body 1 are symmetrically provided on the tank body 1; a ratchet 21 is fixed on the rotating ring 13, and a locking mechanism 12 which matches the ratchet 21 is fixed on the tank body 1; the locking mechanism 12 comprises a pawl mounting plate 121 fixed to the outer side wall of the tank body 1, and a locking assembly 122 for preventing the ratchet 21 from rotating is installed on the pawl mounting plate 121, and the locking assembly 122 comprises a locking pawl 1221 and a locking torsion spring 12 23, the locking pawl 1221 is rotatably arranged on the pawl mounting plate 121 through the rotating shaft 1222, and the rotating shaft 1222 is provided with a pawl aligning link 12221, one end of the locking torsion spring 1223 abuts against the pawl mounting plate 121, and the other end abuts against the pawl aligning link 12221; the locking torsion spring 1223 applies a torque to the locking pawl 1221 in the direction of the ratchet 21, so that the end of the locking pawl 1221 abuts against the ratchet 21, so as to prevent the rotating ring 13 from rotating; when the locking cylinder 4 fails to be gas-cut off, the locking cylinder 4 that has been gas-cut off cannot support the rotating ring 13, and the locking pawl 1221 on the locking mechanism 12 cooperates with the ratchet 211 on the ratchet wheel 21, that is, the end of the locking pawl 1221 supports the ratchet 211, so that the rotating ring 13 cannot rotate; the slag discharge door 2 is effectively prevented from loosening, so as to prevent dangerous situations such as leakage in the extraction tank.

[0028] In order to better lock the rotating ring 13, locking components 122 are respectively installed at the two ends of the pawl mounting plate 121, wherein two pawl co-position connecting rods 12221 on the two rotating shafts 1222 are arranged facing each other; an unlocking component is installed on the pawl mounting plate 121, and the unlocking component includes an unlocking swing rod 1231 and an unlocking cylinder 1232 for driving the unlocking swing rod 1231 to swing, and the unlocking swing rod 1231 is interspersed between the two pawl co-position connecting rods 12221;

[0029] That is, when the slag discharge door 2 needs to be opened, the unlocking cylinder 1232 drives the unlocking swing rod 1231 to rotate, and the two ends of the unlocking swing rod 1231 can simultaneously push the two pawl co-position connecting rods 12221 respectively, so that the two rotating shafts 1222 drive the corresponding locking pawls 1221 to swing back to the ratchet 21 at the same time, and the ends of the locking pawls 1221 are respectively disengaged from the matching end surfaces 2111 on the corresponding ratchet teeth 211 to release the lock on the ratchet 21; and then the slag discharge door 2 can be opened by releasing the lock of the locking cylinder 4 on the rotating ring 13, which is simple and convenient to operate.

[0030] In order to reduce the friction between the end of the unlocking swing rod 1231 and the pawl parallel connecting rod 12221, unlocking rollers 12311 are rotatably provided at both ends of the unlocking swing rod 1231, and the unlocking rollers 12311 are arranged opposite to the pawl parallel connecting rod 12221; the unlocking swing rod 1231 is L-shaped, wherein two unlocking rollers 12311 are respectively arranged at the two ends of the horizontal axis of the unlocking swing rod 1231, and the pushing rod of the unlocking cylinder 1232 is hinged to the upper end of the longitudinal axis of the unlocking swing rod 1231; when the unlocking swing rod 1231 swings around the central axis driven by the unlocking cylinder 1232, the unlocking rollers 12311 roll on the corresponding pawl parallel connecting rod 12221; so that the unlocking swing rod 1231 can push the pawl parallel connecting rod 12221 to swing more smoothly; so as to perform the unlocking operation on the rotating ring 13.

[0031] In order to lock the rotating ring 13 more stably, two locking mechanisms 12 are fixed on the tank body 1, wherein the two pawl mounting plates 121 of the two locking mechanisms 12 are respectively fixed to the two ends of the fixing plate 11 by fasteners, and the fixing plate 11 is welded to the outer wall of the tank body 1 to fix the locking mechanism 12 on the tank body 1; wherein each ratchet tooth 211 on the ratchet wheel 21 includes a sliding end face 2112 and a matching end face 2111, wherein the sliding end face 2112 is for the locking pawl 1221 to slide, and the matching end face 2111 cooperates with the end face of the locking pawl 1221 to prevent The ratchet 21 rotates; the distances between the ends of the four locking pawls 1221 on the two locking mechanisms 12 and the mating end faces 2111 of the corresponding ratchet teeth 211 gradually decrease; wherein the lengths of the two ends of the sliding end faces 2112 are L, and the distances between the ends of the four locking pawls 1221 and the mating end faces 2111 of the corresponding ratchet teeth 211 gradually differ by one quarter L; the ratchet 21 can retreat within the minimum range under the locking of the four locking mechanisms 12, so that the rotation distance of the ratchet 21 can be within a safe range, that is, the locking rod on the slag discharge door 2 cannot slide out of the opening of the locking groove.

[0032] In order to facilitate opening or closing of the slag discharge door 2, a plurality of rotating rollers 131 are circumferentially arranged on the inner wall of the rotating ring 13, and the rotating ring 13 is rotatably arranged on the tank body 1 through the rotating rollers 131; the rotating ring 13 can be pushed to rotate on the tank body 1 more labor-savingly.

[0033] In order to facilitate the upward and downward movement of the slag discharge door 2 relative to the tank body 1, two lifting cylinders 3 for lifting the slag discharge door 2 are arranged on the outer side wall of the tank body 1, and the lifting cylinders 3 drive the slag discharge door 2 to move upward to cooperate with the tank body 1; when the slag discharge door 2 needs to be opened, it is only necessary to release the lock of the ratchet 21 by the locking mechanism 12 and the locking cylinder 4 releases the lock of the rotating ring 13, and then rotate the rotating ring 13 to place the locking rod at the opening of the locking groove; and then drive the slag discharge door 2 downward by the lifting cylinder 3.

[0034] The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A sealing and locking device for the slag discharge door of an extraction tank, comprising a tank body and a slag discharge door that is sealingly fitted to the bottom of the tank body. A rotating ring for locking the slag discharge door is rotatably provided at the lower end of the tank body, and at least one locking cylinder for locking the rotating ring to the tank body is provided on the tank body. Characterized in that: A ratchet is fixed on the rotating ring, and a plurality of rotating rollers are circumferentially and rotatably arranged on the inner side wall of the rotating ring. The rotating ring is rotatably arranged on the tank body through the rotating rollers. Two locking mechanisms that cooperate with the ratchet are fixed on the tank body. The locking mechanism includes a pawl mounting plate fixed on the outer side wall of the tank body. A locking component for preventing the ratchet from rotating is mounted on the pawl mounting plate. The locking component includes a locking pawl and a locking torsion spring. The locking pawl is rotatably arranged on the pawl mounting plate through a rotating shaft. One end of the locking torsion spring abuts against the pawl mounting plate, and the other end abuts against the rotating shaft. The locking torsion spring applies a torsion force to the locking pawl in the direction towards the ratchet, so that the end of the locking pawl abuts against the ratchet teeth of the ratchet to prevent the rotating ring from rotating back. A pawl coaxial connecting rod is provided on the rotating shaft, and one end of the locking torsion spring abuts against the pawl coaxial connecting rod. Locking components are respectively mounted at both ends of the pawl mounting plate. Two pawl coaxial connecting rods on the two rotating shafts are arranged facing each other. An unlocking component is mounted on the pawl mounting plate. The unlocking component includes an unlocking swing rod and an unlocking cylinder for driving the unlocking swing rod to swing. The unlocking swing rod is inserted between the two pawl coaxial connecting rods. The two ends of the unlocking swing rod can simultaneously push the two pawl coaxial connecting rods respectively, so that the two rotating shafts drive the corresponding locking pawls to swing away from the ratchet at the same time to release the locking of the ratchet. The two pawl mounting plates of the two locking mechanisms are respectively fixed at both ends of a fixing plate, and the fixing plate is welded to the outer side wall of the tank body. The ratchet teeth include a sliding end face for the locking pawl to slide and a mating end face that cooperates with the end face of the locking pawl to prevent the ratchet from rotating. The distances between the ends of the four locking pawls on the two locking mechanisms and the mating end faces of the corresponding ratchet teeth gradually decrease in sequence.

2. A sealing and locking device for the slag discharge door of an extraction tank according to claim 1, Characterized in that: Unlocking rollers are rotatably arranged at both ends of the unlocking swing rod. The unlocking rollers are arranged opposite to the pawl coaxial connecting rods. When the unlocking swing rod swings around the central axis, the unlocking rollers roll on the corresponding pawl coaxial connecting rods.

3. A sealing and locking device for the slag discharge door of an extraction tank according to claim 2, Characterized in that: The unlocking swing rod is in an L shape. Two unlocking rollers are respectively arranged at both ends of the horizontal axis of the unlocking swing rod. The push rod of the unlocking cylinder is hinged to the upper end of the vertical axis of the unlocking swing rod.

4. A sealing and locking device for the slag discharge door of an extraction tank according to claim 1 or 2 or 3, Characterized in that: Two lifting cylinders for lifting the slag discharge door are spacedly arranged on the outer side wall of the tank body. The lifting cylinders drive the slag discharge door to move upward to cooperate with the tank body.

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