Grey water slurry pump for mine

Abstract

The utility model provides a mine grey water slurry pump, which belongs to the technical field of slurry pumps and comprises a pump body, an impeller body, a front pump cover, a rear pump cover, a connector and a bearing component, the bearing component is mounted on one side of the pump body through the connector, and a transmission shaft is axially arranged on the bearing component in a penetrating manner; a threaded through hole is axially formed in the shaft head end of the impeller body, one end of the inner side of the transmission shaft penetrates through and is in threaded connection with the threaded through hole, an impeller cap is arranged in an inner cavity of the impeller body, is connected to one end of the inner side of the transmission shaft and is in sealing fit with an inner port of the threaded through hole, and adjusting gaps are formed between the impeller body and the front pump cover and between the impeller body and the rear pump cover. According to the grey water slurry pump for the mine, due to the existence of the adjusting gap, the axial position of the impeller body can be adjusted, it can be guaranteed that the impeller cap can be in sealing fit with the inner port of the threaded through hole all the time, the distance between the impeller body on the front side and the rear side in the pump body can be adjusted, and the performance of the whole pump is effectively guaranteed.

Description

Technical Field

[0001] The utility model belongs to the technical field of slurry pumps, and more specifically relates to an ash water slurry pump for mines. Background Art

[0002] Gray water slurry pump is a pump specially designed for conveying gray water or slurry containing solid particles. This type of pump is usually wear-resistant and corrosion-resistant to cope with the corrosive substances and hard particles that may be contained in the gray water or slurry. Gray water slurry pumps are widely used in mining, metallurgy, chemical industry, construction, environmental protection and other industries.

[0003] In the prior art, the impeller cap of the impeller body in the ash water slurry pump is usually formed in one piece, which results in the shaft head threaded hole of the impeller body being a blind hole structure. The inner end of the drive shaft of the bearing assembly is threadedly connected to the threaded connection hole, resulting in that after the drive shaft and the impeller body are connected in place, it is very difficult to adjust the distance between the front and rear sides of the impeller body in the pump body, which may even affect the performance of the entire pump in severe cases. Utility Model Content

[0004] The utility model aims to provide an ash-water slurry pump for mining, aiming to solve the problem that it is very difficult to adjust the distance between the front and rear sides of the impeller body in the pump body, which may even affect the performance of the entire pump in severe cases.

[0005] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is: to provide an ash-water slurry pump for mining, comprising a pump body, an impeller body, a front pump cover, a rear pump cover, a connector and a bearing assembly, wherein the impeller body is arranged in the pump body, the front pump cover and the rear pump cover are respectively arranged on both sides of the pump body, the front pump cover is located at the inlet end of the impeller body, the rear pump cover is located at the shaft head end of the impeller body, the bearing assembly is installed on the side of the pump body where the rear pump cover is arranged through the connector, and a transmission shaft is arranged axially through the bearing assembly;

[0006] A threaded through hole is axially opened at the shaft head end of the impeller body, the inner end of the transmission shaft passes through and is threadedly connected to the threaded through hole, the inner cavity of the impeller body is provided with an impeller cap, the impeller cap is connected to the inner end of the transmission shaft and is sealed with the inner port of the threaded through hole, and there is an adjustment gap between the impeller body and the front pump cover and the rear pump cover.

[0007] In one possible implementation, the inner port of the threaded through hole is provided with a countersunk hole, the diameter of the countersunk hole is larger than the diameter of the threaded through hole, and a clamping bolt is axially penetrated through the impeller cap, and the clamping bolt is threadedly connected to the inner end of the transmission shaft for press-fitting and sealing the impeller cap to the circumference of the bottom surface of the countersunk hole.

[0008] In a possible implementation, the connector includes a connecting sleeve, and two ends of the connecting sleeve are respectively connected to the pump body and the bearing assembly by bolts.

[0009] In a possible implementation, the front pump cover is integrally formed with the pump body, and the rear pump cover is mounted on the pump body through a stopper and is bolted to the connecting sleeve.

[0010] In one possible implementation, a packing structure is arranged in the center hole of the rear pump cover, and the packing structure is provided with a packing sleeve, a packing part and a packing gland in sequence from inside to outside along the axial direction of the center hole of the rear pump cover, and a shaft sleeve is connected to the shaft head end of the impeller body, and the shaft sleeve is located between the transmission shaft and the packing structure.

[0011] In a possible implementation, a sealing ring is circumferentially provided on an inner wall of the shaft sleeve at one end away from the impeller body.

[0012] In a possible implementation, the end of the packing gland away from the impeller body is provided with a flange, and the flange is connected to the rear pump cover by bolts.

[0013] In a possible implementation, a wear-resistant ring is provided on the outer periphery of the inlet end of the impeller body, and the wear-resistant ring is circumferentially fitted with the inner wall of the front pump cover.

[0014] In a possible implementation, a leg is integrally formed at the lower end of the pump body, an adjustment bracket is detachably connected to the lower end of the bearing assembly, and the leg and the adjustment bracket are used to jointly support the pump body and the bearing assembly.

[0015] In a possible implementation, the outlet end of the pump body is detachably connected to an outlet pipe, and the inner diameter of the outlet pipe gradually increases from close to the pump body to away from the pump body.

[0016] The utility model provides a kind of ash water slurry pump for mining, which has the beneficial effect that: compared with the prior art, the impeller body is arranged in the pump body, the front pump cover and the rear pump cover are arranged on both sides of the pump body respectively, the front pump cover is located at the inlet end of the impeller body, the rear pump cover is located at the shaft head end of the impeller body, the bearing assembly is installed on the side of the pump body where the rear pump cover is arranged through the connecting body, and the bearing assembly is axially penetrated with a transmission shaft. A threaded through hole is axially opened at the shaft head end of the impeller body, the inner end of the transmission shaft penetrates and is threadedly connected to the threaded through hole, the inner cavity of the impeller body is provided with an impeller cap, the impeller cap is connected to the inner end of the transmission shaft and is sealed with the inner port of the threaded through hole, and the impeller body and the front pump cover and the rear pump cover are provided with an adjustment gap. Due to the existence of the adjustment gap, the axial position of the impeller body can be adjusted to ensure that the impeller cap can always achieve a sealing match with the inner port of the threaded through hole, so as to adjust the distance between the front and rear sides of the impeller body in the pump body, so that the performance of the whole pump is effectively guaranteed. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. 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 creative work.

[0018] Figure 1 The present invention is a schematic structural diagram of an ash-water slurry pump for use in mines provided in an embodiment of the utility model.

[0019] Description of reference numerals:

[0020] 1. Bearing assembly; 2. Connector; 3. First bolt; 4. Second bolt; 5. Rear pump cover; 6. Impeller body; 7. Pump body; 8. Wear-resistant ring; 9. Impeller cap; 10. First O-ring; 11. First gasket; 12. Second gasket; 13. Bushing; 14. Third bolt; 15. Adjustment bracket; 16. Fourth bolt; 17. Label; 18. Rivet; 19. Packing part; 20. Fifth bolt; 21. Packing sleeve; 22. Water seal ring; 23. Packing gland; 24. Outlet pipe; 25. Sixth bolt; 26. Third gasket; 27. Second O-ring; 28. Hexagonal screw plug. DETAILED DESCRIPTION

[0021] 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 in conjunction with 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 used to limit the present invention.

[0022] In the claims, specification and the above-mentioned drawings of the utility model, unless otherwise clearly defined, the use of terms such as "first", "second" or "third" etc. is to distinguish different objects rather than to describe a specific order.

[0023] In the claims, specification and the above-mentioned drawings of the utility model, unless otherwise explicitly defined, directional words, such as the terms "center", "lateral", "longitudinal", "horizontal", "vertical", "top", "bottom", "inside", "outside", "up", "down", "front", "back", "left", "right", "clockwise", "counterclockwise", "high", "low", etc., indicating directions or positional relationships are based on the directions and positional relationships shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the specific protection scope of the utility model.

[0024] See also Figure 1 Now, a kind of ash water slurry pump for mining provided by the utility model is described. A kind of ash water slurry pump for mining includes a pump body 7, an impeller body 6, a front pump cover, a rear pump cover 5, a connector 2 and a bearing assembly 1. The impeller body 6 is arranged in the pump body 7, the front pump cover and the rear pump cover 5 are arranged on both sides of the pump body 7 respectively, the front pump cover is located at the inlet end of the impeller body 6, and the rear pump cover 5 is located at the shaft head end of the impeller body 6. The bearing assembly 1 is installed on the side of the pump body 7 where the rear pump cover 5 is arranged through the connector 2, and a transmission shaft is arranged axially through the bearing assembly 1; a threaded through hole is axially opened at the shaft head end of the impeller body 6, and the inner end of the transmission shaft penetrates and is threadedly connected to the threaded through hole, and an impeller cap 9 is arranged in the inner cavity of the impeller body 6, and the impeller cap 9 is connected to the inner end of the transmission shaft and is sealed with the inner port of the threaded through hole, and there is an adjustment gap between the impeller body 6 and the front pump cover and the rear pump cover 5.

[0025] The utility model provides a kind of ash water slurry pump for mining. Compared with the prior art, the impeller body 6 is arranged in the pump body 7, the front pump cover and the rear pump cover 5 are respectively arranged on both sides of the pump body 7, the front pump cover is located at the inlet end of the impeller body 6, the rear pump cover 5 is located at the shaft head end of the impeller body 6, the bearing assembly 1 is installed on the side of the pump body 7 where the rear pump cover 5 is arranged through the connector 2, and the bearing assembly 1 is axially penetrated by a transmission shaft. A threaded through hole is axially opened at the shaft head end of the impeller body 6, the inner end of the transmission shaft penetrates and is threadedly connected to the threaded through hole, the inner cavity of the impeller body 6 is provided with an impeller cap 9, the impeller cap 9 is connected to the inner end of the transmission shaft and is sealed with the inner port of the threaded through hole, and there is an adjustment gap between the impeller body 6 and the front pump cover and the rear pump cover 5. Due to the existence of the adjustment gap, the axial position of the impeller body 6 can be adjusted to ensure that the impeller cap 9 can always achieve a sealing fit with the inner port of the threaded through hole, thereby adjusting the distance between the front and rear sides of the impeller body 6 in the pump body 7, thereby effectively ensuring the performance of the entire pump.

[0026] The inner end of the threaded through hole is provided with a countersunk hole, the diameter of which is larger than the diameter of the threaded through hole, and a clamping bolt is provided axially through the impeller cap 9, which is threadedly connected to the inner end of the transmission shaft and is used to press-fit and seal the impeller cap 9 to the bottom surface circumference of the countersunk hole. The impeller cap 9 and the bottom surface of the sink are provided with a first O-ring 10, which can achieve a sealing connection effect and prevent the slurry in the inner cavity of the impeller body 6 from entering the threaded through hole.

[0027] The connecting body 2 includes a connecting sleeve, and the two ends of the connecting sleeve are respectively connected to the pump body 7 and the bearing assembly 1 by bolts. Specifically, the inner end of the connecting sleeve is connected to the pump body 7 through a plurality of first bolts 3 arranged circumferentially, and the outer end of the connecting sleeve is connected to the outer shell of the bearing assembly 1 through a plurality of third bolts 14 arranged circumferentially.

[0028] The front pump cover is integrally formed with the pump body 7, and the rear pump cover 5 is installed on the pump body 7 through the stopper and connected with the connecting sleeve bolt. The rear pump cover 5 is integrally cast with the pump body 7, and the rear pump cover 5 is installed on the stopper of the pump body 7. A first sealing gasket 11 is arranged between the stopper and the rear pump cover 5, which can improve the sealing between the pump body 7 and the rear pump cover 5. The rear pump cover 5 is connected to the connecting sleeve by a plurality of second bolts 4 arranged circumferentially.

[0029] A packing structure is arranged in the middle hole of the rear pump cover 5. The packing structure is provided with a packing sleeve 21, a packing part 19 and a packing gland 23 in sequence from inside to outside along the axial direction of the middle hole of the rear pump cover 5. The shaft head end of the impeller body 6 is externally connected with a shaft sleeve 13, and the shaft sleeve 13 is located between the transmission shaft and the packing structure. The shaft sleeve 13 is threadedly connected to the shaft head end of the impeller body 6 and cooperates with the second sealing gasket 12 to achieve sealing. In addition, a water seal ring 22 is also arranged between the seasoning part and the shaft sleeve 13 to prevent the blades from leaking out.

[0030] A sealing groove is circumferentially formed on the inner wall of the shaft sleeve 13 away from the impeller body 6 . The sealing ring is a second O-ring 27 , which is installed in the sealing groove to achieve sealing between the shaft sleeve 13 and the transmission shaft.

[0031] The end of the packing gland 23 away from the impeller body 6 is provided with a flanged flange, and the flanged flange is connected to the rear pump cover 5 by bolts. Specifically, the flanged flange and the packing gland 23 are integrally cast, and at least one side of the flanged flange is penetrated by a fifth bolt 20 along the axial direction of the transmission shaft, and the rear pump cover 5 is connected by the fifth bolt 20 to ensure the stability of the position of the packing gland 23 relative to the rear pump cover 5.

[0032] A wear-resistant ring 8 is provided on the outer periphery of the inlet end of the impeller body 6, and the wear-resistant ring 8 is circumferentially fitted with the inner wall of the front pump cover. When conveying medium containing solid particles such as ash water, slurry, tailings, mud, etc., these particles will impact and wear the impeller body 6, resulting in damage to the impeller body 6 and performance degradation. The wear-resistant ring 8 can protect the impeller body 6 from the wear caused by conveying the medium containing hard particles. The use of the wear-resistant ring 8 can significantly extend the service life of the impeller body 6 and reduce maintenance costs.

[0033] The lower end of the pump body 7 is integrally formed with a leg, and the number of the legs can be one or more, and the bottoms of the multiple legs are coplanar. The lower end of the bearing assembly 1 is detachably connected to an adjustment bracket 15, and the leg and the adjustment bracket 15 are used to jointly support the pump body 7 and the bearing assembly 1. The upper end of the adjustment bracket 15 is connected by a fourth bolt 16, and a strip hole is longitudinally opened in the outer shell of the bearing assembly 1. By adjusting the height direction of the bracket 15, it is ensured that the adjustment bracket 15 is coplanar with the leg, so as to achieve stability of the pump body 7 and the bearing assembly 1. At the same time, a nameplate 17 is installed on the outer side of the adjustment leg through a rivet 18 to indicate the performance and parameters of the pump.

[0034] The outlet end of the pump body 7 is detachably connected with an outlet pipe 24, and the inner diameter of the outlet pipe 24 gradually increases from close to the pump body 7 to far away from the pump body 7. The outlet end of the pump body 7 and the inlet end of the outlet pipe 24 are both provided with connecting flanges, and the two connecting flanges are connected by a sixth bolt 25. At the same time, a third sealing gasket 26 is provided at the outlet end of the pump body 7 and the inlet end of the outlet pipe 24 to achieve a sealing effect.

[0035] In addition, an air pressure balance hole connected to the flow channel of the pump body 7 is provided, and an external hexagonal screw plug 28 is installed in the air pressure balance hole to realize the opening and closing of the air pressure balance hole.

[0036] 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 protection scope of the present invention.

Claims

1. A ash-water slurry pump for mining, characterized in that: The pump comprises a pump body (7), an impeller body (6), a front pump cover, a rear pump cover (5), a connector (2) and a bearing assembly (1), wherein the impeller body (6) is arranged in the pump body (7), the front pump cover and the rear pump cover (5) are respectively arranged on both sides of the pump body (7), the front pump cover is located at the inlet end of the impeller body (6), and the rear pump cover (5) is located at the shaft head end of the impeller body (6), the bearing assembly (1) is installed on the side of the pump body (7) where the rear pump cover (5) is arranged through the connector (2), and a transmission shaft is arranged axially through the bearing assembly (1); A threaded through hole is axially provided at the shaft head end of the impeller body (6), and the inner end of the transmission shaft passes through and is threadedly connected to the threaded through hole. An impeller cap (9) is provided in the inner cavity of the impeller body (6), and the impeller cap (9) is connected to the inner end of the transmission shaft and is sealed with the inner port of the threaded through hole. An adjustable gap is provided between the impeller body (6) and the front pump cover and the rear pump cover (5).

2. A ash-water slurry pump for mining as claimed in claim 1, characterized in that: The inner end of the threaded through hole is provided with a countersunk hole, the diameter of which is larger than the diameter of the threaded through hole, and a clamping bolt is axially penetrated through the impeller cap (9), the clamping bolt is threadedly connected to the inner end of the transmission shaft, and is used to press-fit and seal the impeller cap (9) to the circumference of the bottom surface of the countersunk hole.

3. The ash-water slurry pump for mining as claimed in claim 1, characterized in that: The connecting body (2) comprises a connecting sleeve, and two ends of the connecting sleeve are respectively bolted to the pump body (7) and the bearing assembly (1).

4. A ash-water slurry pump for mining as claimed in claim 3, characterized in that: The front pump cover is integrally formed with the pump body (7), and the rear pump cover (5) is mounted on the pump body (7) via a stopper and is bolted to the connecting sleeve.

5. The ash-water slurry pump for mining as claimed in claim 1, characterized in that: A packing structure is arranged in the middle hole of the rear pump cover (5), and the packing structure is provided with a packing sleeve (21), a packing portion (19) and a packing gland (23) in sequence from inside to outside along the axial direction of the middle hole of the rear pump cover (5); the shaft head end of the impeller body (6) is externally connected with a shaft sleeve (13), and the shaft sleeve (13) is located between the transmission shaft and the packing structure.

6. A ash-water slurry pump for mining as claimed in claim 5, characterized in that: A sealing ring is provided in the circumferential direction of the inner wall of the shaft sleeve (13) at one end away from the impeller body (6).

7. The ash-water slurry pump for mining as claimed in claim 5, characterized in that: The end of the packing gland (23) away from the impeller body (6) is provided with a flange, and the flange is connected to the rear pump cover (5) by bolts.

8. The ash-water slurry pump for mining as claimed in claim 1, characterized in that: A wear-resistant ring (8) is provided on the outer periphery of the inlet end of the impeller body (6), and the wear-resistant ring (8) is circumferentially fitted with the inner wall of the front pump cover.

9. The ash-water slurry pump for mining as claimed in claim 1, characterized in that: The lower end of the pump body (7) is integrally formed with a support leg, and the lower end of the bearing assembly (1) is detachably connected with an adjustment bracket (15), and the support leg and the adjustment bracket (15) are used to jointly support the pump body (7) and the bearing assembly (1).

10. The ash-water slurry pump for mining as claimed in claim 1, characterized in that: The outlet end of the pump body (7) is detachably connected to an outlet pipe (24), and the inner diameter of the outlet pipe (24) gradually increases from close to the pump body (7) to away from the pump body (7).

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