Novel sealing structure for horn mouth of grinding head of cement grinding mill

Abstract

The utility model discloses a novel sealing structure for a horn mouth of a grinding head of a cement grinding mill, which comprises the grinding head of the cement grinding mill, a feeding hole, a baffle plate, a felt I, a pressing plate I and a shaft seal I. According to the novel sealing structure, a sealing device is arranged, and a supporting plate I, a rubber sheet, a supporting plate II and a supporting block are matched, so that a labyrinth sealing structure is formed; through the arrangement, flowing is reduced, the sealing effect is improved, meanwhile, a sealing cavity is formed by the first shaft seal, the second shaft seal and the third shaft seal, a high-pressure cavity is formed by pressurizing the second shaft seal and the third shaft seal, dust can be effectively prevented from running out through the arrangement, the sealing effect is further enhanced, the original sealing effect is improved, and the service life of the sealing device is prolonged. The outflow of dust is effectively reduced, the surrounding sanitary environment is improved, the sweeping labor intensity is reduced, and the working efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of cement mills, in particular to a novel sealing structure for a bell mouth of a cement mill grinding head. Background Art

[0002] Cement mill is the key equipment for crushing materials after they are broken. Ball mill is widely used in cement, silicate products, new building materials, refractory materials, fertilizers, black and non-ferrous metal beneficiation, glass and ceramics and other production industries. It can grind various ores and other grindable materials by dry or wet method. Ball mill plays a very important role in cement production. Cement grinding is the last and most important key link in controlling cement quality. To a certain extent, grinding quality can make up for the deficiency of clinker quality and ensure the qualified rate of cement leaving the factory.

[0003] The cement mill needs to seal the grinding head when in use, but the traditional sealing structure is simple and the sealing effect is poor. At the same time, the sealing strip cannot be adjusted after being worn and can only be replaced. This method increases the cost of use, and the sealing structure has a small space and is difficult to replace. Therefore, dust is easily blown out during use, thereby affecting the surrounding environment and work efficiency. Utility Model Content

[0004] 1. Technical issues to be solved

[0005] In view of the deficiencies in the prior art, the utility model provides a novel sealing structure for the bell mouth of a cement mill grinding head, which solves the above-mentioned problems.

[0006] (II) Technical solution

[0007] To achieve the above purpose, the utility model is implemented through the following technical solutions: a new type of sealing structure for the bell mouth of a cement mill grinding head, comprising a cement mill grinding head, a feed inlet, a baffle, a felt, a pressure plate, a shaft seal and a sealing device, wherein the feed inlet is arranged at the right end of the cement mill grinding head, the baffle is fixed to the right end of the cement mill grinding head, the felt is arranged at the right end of the cement mill grinding head, the pressure plate is arranged at the right end of the felt, the shaft seal is installed at the right end of the pressure plate, the sealing device is arranged at the right end of the cement mill grinding head, and the sealing device It includes a fixed block, a support plate 1, a shaft seal 2, a support block, a square tube, a support plate 2, a shaft seal 3 and a tightening mechanism, wherein the fixed block is fixed to the inner top end of the baffle, the support plate 1 is arranged at the right end of the fixed block, the shaft seal 2 penetrates the support plate 1 and the fixed block is arranged at the right end of the support plate 1, the support block is fixed to the top end of the feed inlet, the square tube is arranged at the top end of the support block, the support plate 2 is fixed to the right end of the support block, the shaft seal 3 penetrates the support plate 2 and the square tube is arranged at the right end of the support plate 2, and the tightening mechanism is arranged at the left end of the support plate 2.

[0008] Preferably, the tightening mechanism includes a fixed plate, a connecting plate, a steel belt, a rubber, felt 2 and a bolt, the fixed plate is fixed to the top of the square tube, the connecting plate is arranged at the top of the fixed plate, the steel belt is provided in two groups and both are arranged at the top of the fixed plate, the rubber is arranged at the top of the fixed plate, the felt 2 is arranged inside the rubber, and the right end of the felt 2 is arranged at the left end of the connecting plate, and the bolt is installed at the right end of the support plate 2.

[0009] Preferably, the support plate 1, the support block and the support plate 2 are all arranged in a ring shape, and through this arrangement, a sealed space can be formed between the support plate 1, the support block and the support plate 2 along the outer side of the feed inlet.

[0010] Preferably, the interior of the square tube is cylindrical, and this configuration enables the shaft seal 3 to penetrate the square tube for installation.

[0011] Preferably, the interior of the rubber is hollowed out, and the interior of the rubber is tightly fitted to the outer side of the second felt, and this arrangement improves the sealing effect.

[0012] Preferably, the length of the felt 2 is the same as the distance between the support plate 1 and the support plate 2, and a sealed space is formed by this arrangement.

[0013] Preferably, the steel belt is provided by a self-locking steel belt, by adopting the self-locking steel belt, the felt 2 can be compressed to ensure the sealing effect.

[0014] (III) Beneficial effects

[0015] The utility model provides a new type of sealing structure for the bell mouth of a cement mill. It has the following beneficial effects: by setting a sealing device, by adopting the cooperation of support plate 1, rubber, support plate 2 and support block, a labyrinth sealing structure is formed, and the flow is reduced by this setting, and the sealing effect is improved. At the same time, the sealing cavity formed by shaft seal 1, shaft seal 2 and shaft seal 3 forms a high-pressure cavity by pressurizing shaft seal 2 and shaft seal 3, and the dust can be effectively prevented from escaping therefrom, and the sealing effect is further enhanced, and the original sealing effect is improved, the outflow of dust is effectively reduced, the surrounding sanitary environment is improved, the cleaning labor is reduced, and the work efficiency is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural front view of the utility model;

[0017] Figure 2 This is a front view of the sealing device structure in the utility model;

[0018] Figure 3 This is a front view of the structure of the tightening mechanism in the utility model;

[0019] Figure 4 It is a side view of the tightening mechanism structure in the utility model.

[0020] In the figure: cement mill grinding head-1, feed inlet-2, baffle-3, felt 1-4, pressure plate 1-5, shaft seal 1-6, sealing device-7, fixing block-71, support plate 1-72, shaft seal 2-73, support block-74, square tube-75, support plate 2-76, shaft seal 3-77, tightening mechanism-78, fixing plate-781, connecting plate-782, steel belt-783, rubber-784, felt 2-785, bolt-786. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] See also Figure 1 and 2 The utility model provides a new type of cement mill grinding head bell mouth sealing structure technical solution: a new type of cement mill grinding head bell mouth sealing structure, including a cement mill grinding head 1, a feed port 2, a baffle 3, a felt 4, a pressure plate 5, a shaft seal 6 and a sealing device 7, the feed port 2 is arranged at the right end of the cement mill grinding head 1, the baffle 3 is fixed to the right end of the cement mill grinding head 1, the felt 4 is arranged at the right end of the cement mill grinding head 1, the pressure plate 5 is arranged at the right end of the felt 4, the shaft seal 6 is installed at the right end of the pressure plate 5, the sealing device 7 is arranged at the right end of the cement mill grinding head 1, the sealing device 7 includes a fixed block 71, a support plate 1 72, a shaft seal 2 73, a support block 74, a square tube 75, a support plate 2 76, a shaft seal 3 77 and a tightening mechanism 78, the fixed block 71 is fixed to the inner top end of the baffle 3, Support plate 1 72 is arranged at the right end of fixed block 71, shaft seal 2 73 passes through support plate 1 72 and fixed block 71 and is arranged at the right end of support plate 1 72, support block 74 is fixed at the top end of feed port 2, square tube 75 is arranged at the top end of support block 74, support plate 2 76 is fixed at the right end of support block 74, shaft seal 3 77 passes through support plate 2 76 and square tube 75 and is arranged at the right end of support plate 2 76, tightening mechanism 78 is arranged at the left end of support plate 2 76, support plate 1 72, support block 74 and support plate 2 76 are all arranged in an annular shape, through which a sealed space can be formed between support plate 1 72, support block 74 and support plate 2 76 along the outside of the feed port, the interior of square tube 75 is arranged in a cylindrical shape, through which shaft seal 3 77 can pass through square tube 75 for installation.

[0023] See also Figure 3 and 4 The utility model provides a new type of cement mill grinding head bell mouth sealing structure technical solution: a new type of cement mill grinding head bell mouth sealing structure, the tightening mechanism 78 includes a fixing plate 781, a connecting plate 782, a steel belt 783, a rubber 784, a felt 785 and a bolt 786, the fixing plate 781 is fixed to the top of the square tube 75, the connecting plate 782 is arranged at the top of the fixing plate 781, the steel belt 783 is provided with two groups, and both are arranged at the top of the fixing plate 781, the rubber 784 is arranged at the top of the fixing plate 781, the felt 785 is arranged at the rubber The inside of the rubber 784 is hollowed out, and the inside of the rubber 784 is tightly fitted with the outside of the felt 2 785. This arrangement improves the sealing effect. The length of the felt 2 785 is the same as the distance between the support plate 1 72 and the support plate 2 76. This arrangement forms a sealed space. The steel belt 783 is a self-locking steel belt. By adopting the self-locking steel belt, the felt 2 785 can be pressed tightly to ensure the sealing effect.

[0024] Here’s how it works:

[0025] First, the support plate 1 72, the rubber 784, the support plate 2 76 and the support block 74 cooperate to form a labyrinth seal structure, which can reduce dust flow and improve the sealing effect;

[0026] Second, the shaft seal 2 73 is installed on the fixed block 71 and the support plate 1 72, and the shaft seal 3 77 is installed on the support plate 2 76 and the square tube 75. The sealing cavity formed by the cooperation of the shaft seal 1 6, the shaft seal 2 73 and the shaft seal 3 77 forms a high-pressure cavity by pressurizing the shaft seal 2 73 and the shaft seal 3 77, which can effectively prevent dust from escaping;

[0027] Third, when the sealing felt is damaged, the steel belt 783 compresses the felt 785 to ensure that the sealing effect can be used normally, thereby providing a sealing effect on the original basis.

[0028] The control method of the present invention is to control by manually starting and closing the switch. The wiring diagram of the power element and the provision of power supply are common knowledge in the field, and the present invention is mainly used to protect mechanical devices, so the present invention will not explain the control method and wiring arrangement in detail.

[0029] The control method of the present invention is automatic control through a controller. The control circuit of the controller can be realized by simple programming by technicians in this field. The provision of power is also common knowledge in this field. The present invention is mainly used to protect mechanical devices, so the present invention will no longer explain the control method and circuit connection in detail.

[0030] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A new type of sealing structure for the bell mouth of a cement mill grinding head, comprising a cement mill grinding head (1), a feed inlet (2), a baffle (3), a felt (4), a pressure plate (5) and a shaft seal (6), wherein the feed inlet (2) is arranged at the right end of the cement mill grinding head (1), the baffle (3) is fixed to the right end of the cement mill grinding head (1), the felt (4) is arranged at the right end of the cement mill grinding head (1), the pressure plate (5) is arranged at the right end of the felt (4), and the shaft seal (6) is installed at the right end of the pressure plate (5); Features: The invention also comprises a sealing device (7), wherein the sealing device (7) is arranged at the right end of the cement grinding head (1), and the sealing device (7) comprises a fixing block (71), a first support plate (72), a second shaft seal (73), a support block (74), a square tube (75), a second support plate (76), a third shaft seal (77) and a tightening mechanism (78), wherein the fixing block (71) is fixed to the inner top end of the baffle (3), the first support plate (72) is arranged at the right end of the fixing block (71), and the second shaft seal (73) is fixed to the inner top end of the baffle (3). ) penetrates support plate one (72) and the fixed block (71) and is arranged at the right end of support plate one (72); the support block (74) is fixed to the top end of the feed port (2); the square tube (75) is arranged at the top end of the support block (74); the support plate two (76) is fixed to the right end of the support block (74); the shaft seal three (77) penetrates support plate two (76) and the square tube (75) and is arranged at the right end of support plate two (76); and the tightening mechanism (78) is arranged at the left end of support plate two (76).

2. A new type of cement mill grinding head bell mouth sealing structure according to claim 1, characterized in that: The tightening mechanism (78) comprises a fixing plate (781), a connecting plate (782), a steel belt (783), a rubber (784), a felt second (785) and a bolt (786); the fixing plate (781) is fixed to the top end of the square tube (75); the connecting plate (782) is arranged at the top end of the fixing plate (781); two groups of the steel belt (783) are provided and are both arranged at the top end of the fixing plate (781); the rubber (784) is arranged at the top end of the fixing plate (781); the felt second (785) is arranged inside the rubber (784); and the right end of the felt second (785) is arranged at the left end of the connecting plate (782); and the bolt (786) is installed at the right end of the supporting plate second (76).

3. A new type of cement mill grinding head bell mouth sealing structure according to claim 1, characterized in that: The support plate 1 (72), the support block (74) and the support plate 2 (76) are all arranged in a ring shape.

4. A new type of cement mill grinding head bell mouth sealing structure according to claim 1, characterized in that: The interior of the square tube (75) is cylindrical.

5. The sealing structure for the bell mouth of a new cement mill according to claim 2 is characterized in that: The interior of the rubber (784) is hollowed out, and the interior of the rubber (784) is tightly fitted to the outer side of the second felt (785).

6. A new type of cement mill grinding head bell mouth sealing structure according to claim 2, characterized in that: The length of the second felt (785) is the same as the distance between the first support plate (72) and the second support plate (76).

7. The sealing structure for the bell mouth of a new cement mill according to claim 2 is characterized in that: The steel belt (783) is provided by a self-locking steel belt.

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