An emulsion explosive delivery device

Abstract

A conveying device for emulsion explosives belongs to the technical field of emulsion explosive production equipment. Wear-resistant long bushings are respectively provided at both ends of the intermediate shaft inside the screw pump body. A wear-resistant short bushing is provided at the connection between universal joint one and the drive shaft inside the screw pump body, and a wear-resistant short bushing is provided at the connection between universal joint two and the rotor inside the screw pump body. A rubber protective sleeve is sealed onto universal joint one, the intermediate shaft, and universal joint two. The wear-resistant structural design, reliable sealing protection measures, and effective conveying mechanism based on the screw pump principle of this utility model achieve efficient and stable conveying of emulsion explosives, providing strong technical support for the production and use of emulsion explosives.

Description

Technical Field

[0001] This utility model belongs to the technical field of emulsion explosive production equipment, specifically an emulsion explosive conveying device. Background Technology

[0002] Emulsion explosives are water-in-oil paste-like water-containing explosives formed by uniformly dispersing microdroplets of oxidizing agent salt aqueous solution in a continuous oil-phase medium containing air bubbles or porous materials using emulsifiers. In the production process of emulsion explosives, a conveying device is required to transport the emulsion explosive raw materials to a designated location. Currently, screw pumps are commonly used for conveying emulsion explosive raw materials. However, when conveying emulsion explosive raw materials, the screw pumps experience significant internal wear after prolonged use, affecting the conveying efficiency and the service life of the device. Summary of the Invention

[0003] To address the problems existing in the background art, this utility model provides an emulsion explosive conveying device.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: an emulsion explosive conveying device, comprising a screw pump body, a first wear-resistant short bushing, a second wear-resistant short bushing, a rubber protective sleeve, and two long wear-resistant bushings;

[0005] Wear-resistant long bushings are provided at both ends of the intermediate shaft inside the screw pump body. Wear-resistant short bushing 1 is provided at the connection between universal joint 1 and the drive shaft inside the screw pump body. Wear-resistant short bushing 2 is provided at the connection between universal joint 2 and the rotor inside the screw pump body. The rubber protective sleeve is sealed on universal joint 1, intermediate shaft and universal joint 2.

[0006] The screw pump body includes a base, motor, drive shaft, cylinder, bearing, shaft seal, universal joint one, intermediate shaft, universal joint two, rotor and stator;

[0007] A motor is fixed on the base. The output shaft of the motor is fixedly connected to the transmission shaft. The transmission shaft extends into the cylinder and is fixedly connected to universal joint one. The transmission shaft is rotatably connected to one end of the cylinder in a sealed manner. The lower end of the cylinder is fixedly connected to the base. The cylinder has a feed port and a discharge port at the other end. The bearing is mounted on the transmission shaft. The inner ring of the bearing is fixedly connected to the transmission shaft, and the outer ring of the bearing is fixedly connected to the inner wall of the cylinder. A shaft seal is fixedly fixed between universal joint one and the bearing. The shaft seal is sealed and mounted on the transmission shaft. Universal joint one is fixedly connected to the intermediate shaft. The intermediate shaft is fixedly connected to universal joint two. Universal joint two is fixedly connected to the rotor. The rotor works in conjunction with the stator, and the stator is fixed to the inner wall of the cylinder.

[0008] The rubber protective sleeve includes a rubber corrugated tube and two rubber balls;

[0009] The two ends of the rubber bellows are respectively connected and fixed to the corresponding rubber balls. The rubber bellows is fitted on the intermediate shaft. One of the rubber balls is sealed on universal joint one, and the other rubber ball is sealed on universal joint two. The rubber bellows and the two rubber balls form a sealed cavity. The rubber bellows is provided with an oil injection hole, and a removable sealing plug is provided at the oil injection hole.

[0010] The two wear-resistant long bushings are respectively installed in close fit with the intermediate shaft and fixed by interference fit or key connection.

[0011] The wear-resistant short bushing is adapted to be installed with the universal joint and the drive shaft, and the inner wall of the wear-resistant short bushing fits the shape of the outer wall of the corresponding part.

[0012] The wear-resistant short bushing II and the universal joint II are adapted to be installed with the rotor, and the inner wall of the wear-resistant short bushing II matches the shape of the outer wall of the corresponding part.

[0013] The inner wall of the cavity of the rubber protective sleeve is provided with a protective layer.

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

[0015] 1. Wear-resistant design extends component life: By setting wear-resistant long bushings at both ends of the intermediate shaft, and setting wear-resistant short bushing one at the connection between universal joint one and the drive shaft, and setting wear-resistant short bushing two at the connection between universal joint two and the rotor, these wear-resistant bushings are adapted to the corresponding components and the inner wall fits the outer wall shape of the corresponding part, which significantly reduces the direct friction between components, reduces wear, extends the service life of components, and ensures the stable operation of the device.

[0016] 2. Safety of the sealing and protection device: The rubber protective sleeve sealing device is installed on universal joint one, intermediate shaft and universal joint two. It consists of rubber bellows and two rubber balls to form a sealed cavity, which can prevent substances such as emulsion explosives from entering the critical connection parts and avoid corrosion or damage to these components. The rubber bellows is equipped with an oil injection hole, which can inject lubricating oil to further reduce friction between components and improve the reliability and durability of the device.

[0017] 3. Effective conveying through screw pump structure: Based on the working principle of screw pump, the motor serves as the power source, transmitting power to the rotor through the drive shaft, universal joint one, intermediate shaft, and universal joint two. The rotor and stator cooperate to form a continuous sealed chamber. As the rotor rotates, the volume of the sealed chamber changes, generating negative pressure at the feed inlet to draw in the emulsion explosive, which then moves axially and is conveyed to the discharge outlet, thus achieving effective conveying of the emulsion explosive.

[0018] In summary, the wear-resistant structural design, reliable sealing and protection measures, and effective conveying mechanism based on the screw pump principle of this utility model achieve efficient and stable conveying of emulsion explosives, providing strong technical support for the production and use of emulsion explosives. Attached Figure Description

[0019] Figure 1 This is a front view of the present invention. Detailed Implementation

[0020] The technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of the utility model, not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the protection scope of this utility model.

[0021] This embodiment describes an emulsion explosive conveying device, including a screw pump body 1, a first wear-resistant short bushing 3, a second wear-resistant short bushing 4, a rubber protective sleeve 5, and two long wear-resistant bushings 2.

[0022] Wear-resistant long bushings 2 are provided at both ends of the intermediate shaft 108 inside the screw pump body 1. Wear-resistant short bushings 3 are provided at the connection between the universal joint 107 and the drive shaft 103 inside the screw pump body 1. Wear-resistant short bushings 4 are provided at the connection between the universal joint 109 and the rotor 110 inside the screw pump body 1. The rubber protective sleeve 5 is sealed on the universal joint 107, the intermediate shaft 108 and the universal joint 109.

[0023] The screw pump body 1 includes a base 101, a motor 102, a drive shaft 103, a cylinder 104, a bearing 105, a shaft seal 106, a universal joint 107, an intermediate shaft 108, a universal joint 109, a rotor 110, and a stator 111.

[0024] A motor 102 is fixed on the base 101. The output shaft of the motor 102 is fixedly connected to a transmission shaft 103. The transmission shaft 103 extends into the cylinder 104 and is fixedly connected to a universal joint 107. The transmission shaft 103 is rotatably and sealed to one end of the cylinder 104. The lower end of the cylinder 104 is fixedly connected to the base 101. The cylinder 104 has a feed inlet and a discharge outlet. A bearing 105 is fitted onto the transmission shaft 103, and the inner ring of the bearing 105 is fixedly attached to the transmission shaft 103. The bearing 105 is fixedly connected to the inner wall of the cylinder 104. A shaft seal 106 is fixedly sealed between the universal joint 107 and the bearing 105. The shaft seal 106 is sealed and fitted on the drive shaft 103. The universal joint 107 is fixedly connected to the intermediate shaft 108. The intermediate shaft 108 is fixedly connected to the universal joint 109. The universal joint 109 is fixedly connected to the rotor 110. The rotor 110 is used in conjunction with the stator 111. The stator 111 is fixed on the inner wall of the cylinder 104.

[0025] The rubber protective sleeve 5 includes a rubber corrugated tube 501 and two rubber balls 502;

[0026] The two ends of the rubber bellows 501 are respectively connected and fixed to the corresponding rubber balls 502. The rubber bellows 501 is fitted on the intermediate shaft 108. One of the rubber balls 502 is sealed on the universal joint 107, and dynamic sealing is achieved through a flexible sealing ring. Preferably, the flexible sealing ring is a fluororubber O-ring with a cross-sectional diameter of φ8mm and a compression amount controlled at 15%~20%. The other rubber ball 502 is sealed on the universal joint 109, and dynamic sealing is achieved through a flexible sealing ring. Preferably, the flexible sealing ring is a fluororubber O-ring with a cross-sectional diameter of φ8mm and a compression amount controlled at 15%~20%. The rubber bellows 501 and the two rubber balls 502 form a sealed cavity. The rubber bellows 501 is provided with an oil injection hole, and a removable sealing plug is provided at the oil injection hole.

[0027] The two wear-resistant long bushings 2 are respectively installed in close fit with the intermediate shaft 108 and fixed by interference fit or key connection.

[0028] The wear-resistant short bushing 3 is adapted to be installed with the universal joint 107 and the drive shaft 103, and the inner wall of the wear-resistant short bushing 3 fits the shape of the outer wall of the corresponding part.

[0029] The wear-resistant short bushing 4 and the universal joint 109 are adapted to be installed with the rotor 110, and the inner wall of the wear-resistant short bushing 4 matches the shape of the outer wall of the corresponding part.

[0030] The inner wall of the cavity of the rubber protective sleeve 5 is provided with a protective layer, which is preferably made of high temperature resistant and heat insulation materials such as ceramic fiber or aerogel felt.

[0031] This utility model's emulsion explosive conveying device is mainly based on the working principle of a screw pump, combined with a unique protective and wear-resistant structural design, to achieve effective conveying of emulsion explosives. The specific working process is as follows: A motor 102 is fixed on the device base 101, serving as the power source. When the motor 102 starts, its output shaft begins to rotate, transmitting power to the drive shaft 103 fixedly connected to it. The drive shaft 103 rotates synchronously under the drive of the motor 102. The drive shaft 103 is sealed and rotatably connected to one end of the cylinder 104, and the inner ring of the bearing 105, fitted on the drive shaft 103, is fixedly connected to the drive shaft 103, while the outer ring of the bearing 105 is fixedly connected to the inner wall of the cylinder 104. This ensures that the drive shaft 103 can rotate stably within the cylinder 104, transferring power from the motor... 102 transmits power to the subsequent components of the screw pump. The drive shaft 103 extends into the cylinder 104 and is fixedly connected to the universal joint 107. When the drive shaft 103 rotates, it drives the universal joint 107 to rotate. A shaft seal 106 is sealed between the universal joint 107 and the bearing 105. The shaft seal 106 is sealed on the drive shaft 103 to prevent the leakage of emulsion explosive in the cylinder 104. The universal joint 107 has flexible rotation characteristics and can adapt to the power transmission requirements of different angles. The universal joint 107 transmits power to the intermediate shaft 108. Wear-resistant long bushings 2 are provided at both ends of the intermediate shaft 108. The two wear-resistant long bushings 2 are tightly fitted with the intermediate shaft 108 and fixed by interference fit or key connection to reduce the direct friction between the intermediate shaft 108 and other components. The intermediate shaft 108 then transmits power to the rotor 110 through the universal joint 109. The rotor 110 starts to rotate under the drive of the universal joint 109. The rotor 110 works in conjunction with the stator 111, which is fixed to the inner wall of the opening at the other end of the cylinder 104. The rotor 110 and the stator 111 form a continuous sealed chamber. As the rotor 110 rotates, the volume of these sealed chambers changes.As the sealed chamber gradually forms and increases in volume on the feed port side of the cylinder 104, a negative pressure is generated. Under the action of external pressure, the emulsion explosive enters the sealed chamber through the feed port on the cylinder 104. As the rotor 110 continues to rotate, the sealed chamber carries the emulsion explosive axially, transporting the emulsion explosive from the feed port side to the discharge port side. When the sealed chamber reaches the discharge end, its volume gradually decreases, the emulsion explosive is compressed, and finally discharged from the discharge port, completing the conveying process. During the operation of the screw pump, the wear-resistant long bushings 2 at both ends of the intermediate shaft 108 can... This design reduces direct friction between the intermediate shaft 108 and adjacent components. A wear-resistant short bushing 3 is provided at the connection between universal joint 107 and drive shaft 103. The wear-resistant short bushing 3 is fitted to both universal joint 107 and drive shaft 103, and its inner wall conforms to the shape of the corresponding outer wall, effectively reducing wear at the connection between universal joint 107 and drive shaft 103. Similarly, a wear-resistant short bushing 4 is provided at the connection between universal joint 109 and rotor 110. The wear-resistant short bushing 4 is fitted to both universal joint 109 and rotor 110, and its inner wall conforms to the shape of the corresponding outer wall, reducing wear. Wear at the connection point is significantly reduced by these wear-resistant bushings, which can significantly reduce wear between components, extend the service life of components, and ensure the stable operation of the device. The rubber protective sleeve 5 is sealed onto universal joint 107, intermediate shaft 108, and universal joint 2 109. The rubber protective sleeve 5 consists of a rubber bellows 501 and two rubber balls 502. Both ends of the rubber bellows 501 are connected and fixed to the corresponding rubber balls 502, forming a sealed cavity. This cavity can provide a certain degree of buffering and protection, preventing the emulsion of explosives. The material enters the connection points of universal joint 107, intermediate shaft 108, and universal joint 2 109 to avoid corrosion or damage to these critical components. At the same time, the rubber bellows 501 is provided with an oil injection hole, and the oil injection hole is equipped with a removable sealing plug. Lubricating oil can be injected into the cavity through the oil injection hole to further reduce friction between components and improve the reliability and durability of the device. This device is suitable for conveying emulsion explosives with a viscosity ≤5000mPa·s. The preferred operating temperature range is -20℃ to +80℃, and the preferred maximum conveying pressure is 1.6MPa.

[0032] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of the equivalents of the claims are intended to be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A device for conveying emulsion explosives, characterized in that: It includes a screw pump body (1), wear-resistant short bushing one (3), wear-resistant short bushing two (4), rubber protective sleeve (5) and two wear-resistant long bushings (2). Wear-resistant long bushings (2) are provided at both ends of the intermediate shaft (108) inside the screw pump body (1). Wear-resistant short bushings (3) are provided at the connection between the universal joint (107) and the drive shaft (103) inside the screw pump body (1). Wear-resistant short bushings (4) are provided at the connection between the universal joint (109) and the rotor (110) inside the screw pump body (1). The rubber protective sleeve (5) is sealed on the universal joint (107), the intermediate shaft (108) and the universal joint (109).

2. The emulsion explosive delivery device of claim 1, wherein: The screw pump body (1) includes a base (101), a motor (102), a drive shaft (103), a cylinder (104), a bearing (105), a shaft seal (106), a universal joint one (107), an intermediate shaft (108), a universal joint two (109), a rotor (110), and a stator (111). A motor (102) is fixed on the base (101). The output shaft of the motor (102) is fixedly connected to the transmission shaft (103). The transmission shaft (103) extends into the cylinder (104) and is fixedly connected to a universal joint (107). The transmission shaft (103) is rotatably connected to one end of the cylinder (104). The lower end of the cylinder (104) is fixedly connected to the base (101). The cylinder (104) has a feed inlet and a discharge outlet. The bearing (105) is mounted on the transmission shaft (103). The inner ring of the bearing (105) is fixedly connected to the transmission shaft (103). The bearing (105) outer ring is fixedly connected to the inner wall of the cylinder (104). A shaft seal (106) is fixedly sealed between the universal joint (107) and the bearing (105). The shaft seal (106) is sealed on the transmission shaft (103). The universal joint (107) is fixedly connected to the intermediate shaft (108). The intermediate shaft (108) is fixedly connected to the universal joint (109). The universal joint (109) is fixedly connected to the rotor (110). The rotor (110) is used in conjunction with the stator (111). The stator (111) is fixed on the inner wall of the cylinder (104).

3. The emulsion explosive delivery device of claim 1, wherein: The rubber protective sleeve (5) includes a rubber corrugated tube (501) and two rubber balls (502). The two ends of the rubber bellows (501) are respectively connected and fixed to the corresponding rubber balls (502). The rubber bellows (501) is fitted on the intermediate shaft (108). One of the rubber balls (502) is sealed on the universal joint one (107), and the other rubber ball (502) is sealed on the universal joint two (109). The rubber bellows (501) and the two rubber balls (502) form a sealed cavity. The rubber bellows (501) is provided with an oil injection hole, and a removable sealing plug is provided at the oil injection hole.

4. The emulsion explosive delivery device of claim 1, wherein: The two wear-resistant long bushings (2) are respectively installed in close fit with the intermediate shaft (108) and fixed by interference fit or key connection.

5. The emulsion explosive delivery device of claim 1, wherein: The wear-resistant short bushing (3) is adapted to be installed with the universal joint (107) and the drive shaft (103), and the inner wall of the wear-resistant short bushing (3) matches the shape of the outer wall of the corresponding part.

6. The emulsion explosive delivery device of claim 1, wherein: The wear-resistant short bushing 2 (4) and universal joint 2 (109) are adapted to be installed with the rotor (110), and the inner wall of the wear-resistant short bushing 2 (4) matches the shape of the outer wall of the corresponding part.

7. The emulsion explosive delivery device of claim 1, wherein: The inner wall of the cavity of the rubber protective sleeve (5) is provided with a protective layer.

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