Slurry pump with inlet end flushing device

Abstract

The utility model relates to a slurry pump with an inlet end flushing device, which comprises a pump body and further comprises a flushing assembly which is arranged on a shell and faces an impeller in the shell, the flushing assembly comprises a positioning sleeve, a flushing pipe and a plurality of locking pieces, the positioning sleeve is inserted on the outer side of the shell, and the flushing pipe is arranged on the outer side of the shell. The end, facing the shell, of the positioning sleeve extends into an inner cavity of the shell, and the positioning sleeve is connected with the shell in a sealed mode. Through the arrangement of the flushing assembly, a water pump is externally connected to a flushing pipe, slurry in a gap between the inner wall of the shell and the impeller can be flushed, abrasion of particles in the slurry to the impeller and the shell is reduced, and the service life of the slurry pump is prolonged; through the arrangement of the structure of the positioning sleeve in the flushing assembly, after the flushing assembly is fixedly installed on the shell, the seam between the positioning sleeve and the shell can be sealed, and therefore it can be avoided that slurry leaks from the seam between the positioning sleeve and the shell and influences use of the slurry pump.

Description

Technical Field

[0001] The utility model relates to the technical field of slurry pumps, in particular to a slurry pump with an inlet end flushing device. Background Art

[0002] The main working parts of the slurry pump are the impeller and the pump casing. The impeller in the pump casing rotates at high speed driven by the motor shaft. The blades of the impeller force the slurry to rotate, that is, the impeller does work on the slurry along its moving direction, thereby forcing the pressure potential energy and kinetic energy of the slurry to increase. The slurry flows from the center of the impeller to the outer edge, and a certain vacuum is formed in the center of the impeller. Since the pressure above the liquid surface of the storage tank is greater than the pressure at the pump inlet, the slurry is continuously pressed into the impeller.

[0003] When the slurry pump is operating normally, the axial force generated is transmitted forward, causing the gap between the impeller and the pump casing to gradually decrease. When the slurry pump is conveying slurry with more particles, part of the slurry thrown out by the impeller flows back into the gap between the impeller and the pump casing. The slurry between the pump casing and the impeller interferes with the normal operation of the slurry pump and accelerates the wear of the impeller, shortening the service life of the slurry pump body, resulting in the need for regular shutdown inspection of the slurry pump for later maintenance, increasing maintenance costs. Utility Model Content

[0004] 1. Technical issues to be resolved

[0005] The utility model provides a slurry pump with an inlet end flushing device, which solves the problems raised in the background technology.

[0006] (II) Technical solution

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a slurry pump with an inlet end flushing device, comprising a pump body, the pump body comprising an outer shell, an input end and an output end formed on the outer shell, an impeller rotatably arranged in the outer shell, and a bracket supported at the input end and below the outer shell, and also comprising a flushing component installed on the outer shell and facing the impeller in the outer shell, the flushing component comprising a positioning sleeve, a flushing pipe and a plurality of locking members, the positioning sleeve being inserted on the outer side of the outer shell, and the positioning sleeve extending into the inner cavity of the outer shell toward one end of the outer shell, and the positioning sleeve being sealedly connected to the outer shell; the flushing pipe being inserted into the inner cavity of the positioning sleeve toward one end of the positioning sleeve, and the plurality of locking members passing through the end of the flushing pipe away from the positioning sleeve and connected to the outer shell, so that the flushing pipe is fixed in the inner cavity of the positioning sleeve.

[0008] Preferably, the positioning sleeve includes two groups of symmetrical jackets, a first sealing ring and a second sealing ring, the facing sides of the two groups of jackets are aligned and contacted with each other, and the first sealing ring and the second sealing ring are both sleeved on the outer walls of the two groups of jackets, so that the positioning sleeve is sealed and connected to the outer shell by the second sealing ring and the first sealing ring.

[0009] It is further preferred that the sleeve includes a clamping portion, a connecting portion, a first arc groove and a second arc groove, the clamping portion is configured to have a semicircular arc cross-section, and the first arc groove and the second arc groove are both formed on the outer wall of the clamping portion, the first sealing ring and the second sealing ring are respectively embedded in the first arc groove and the second arc groove, the connecting portion is formed on the end face of the clamping portion located on the outside of the outer shell, and the connecting portion is in contact with the outer wall of the outer shell.

[0010] It is further preferred that the flushing pipe includes a tube body and a flange, one end of the tube body is inserted into a circular inner cavity surrounded by two groups of jackets, the flange is formed on the end face of the tube body located outside the two groups of jackets, a plurality of locking members pass through the flange and the connecting portion and are connected to the outer shell, the inner diameter of the clamping portion is adapted to the outer diameter of the tube body, so that the two groups of clamping portions clamp and fix the tube body inserted therebetween, the flushing pipe also includes a filter seat, the filter seat is detachably fixedly connected to one end of the tube body extending into the inner cavity of the outer shell, and a plurality of filter holes are formed in the middle of the filter seat.

[0011] (III) Beneficial effects

[0012] Compared with the prior art, the utility model provides a slurry pump with an inlet end flushing device, which has the following beneficial effects:

[0013] By setting up the flushing component, an external water pump is connected to the flushing pipe to flush the slurry in the gap between the inner wall of the casing and the impeller, reducing the wear of the impeller and the casing by particles in the slurry, reducing the downtime inspection required in the later maintenance, reducing the maintenance cost, and extending the service life of the slurry pump;

[0014] By setting the structure of the positioning sleeve in the flushing assembly, the joint between the positioning sleeve and the outer shell can be sealed after the flushing assembly is installed and fixed on the outer shell, thereby preventing the slurry from dripping from the gap between the two and affecting the use of the slurry pump;

[0015] By setting the filter seat in the flushing pipe, the flushing component can reduce the particles in the slurry from entering the pipe body when it is not flushed, thereby avoiding clogging of the flushing pipe when it is not flushed and affecting its subsequent flushing use. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic structural diagram of a slurry pump with an inlet end flushing device according to an embodiment;

[0017] Figure 2 is a schematic structural diagram of a flushing assembly according to an embodiment;

[0018] Figure 3is a schematic structural diagram of a positioning sleeve according to an implementation scheme;

[0019] Figure 4 is a schematic structural diagram of a flushing pipe according to an embodiment;

[0020] Figure 5 Schematic diagram of the structure of a jacket according to an embodiment.

[0021] In the figure: 10, pump body; 11, outer shell; 12, input end; 13, output end; 14, bracket; 20, flushing assembly; 21, positioning sleeve; 211, jacket; 2111, clamping part; 2112, connecting part; 2113, first arc groove; 2114, second arc groove; 212, first sealing ring; 213, second sealing ring; 22, flushing pipe; 221, pipe body; 222, flange; 223, filter seat; 23, locking piece. DETAILED DESCRIPTION

[0022] 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.

[0023] See also Figure 1 and Figure 2 A slurry pump with an inlet end flushing device includes a pump body 10 and a flushing assembly 20. The pump body 10 is a slurry pump in the prior art, which may include a housing 11, an input end 12 and an output end 13 formed on the housing 11, an impeller rotatably arranged in the housing 11, and a bracket 14 supported and arranged below the input end 12 and the housing 11. The flushing assembly 20 may include a positioning sleeve 21, a flushing pipe 22, and a plurality of locking members 23. The positioning sleeve 21 is inserted on the outer side of the housing 11, and one end of the positioning sleeve 21 facing the housing 11 extends into the inner cavity of the housing 11, and the positioning sleeve 21 and the housing 11 are sealed when the positioning sleeve 21 is installed. The flushing pipe 22 is inserted into the inner cavity of the positioning sleeve 21 toward one end of the positioning sleeve 21, and the positioning sleeve 21 can be used to support the flushing pipe 22. A plurality of locking members 23 pass through one end of the flushing pipe 22 away from the positioning sleeve 21 and are connected to the housing 11, so that the flushing pipe 22 is fixed in the inner cavity of the positioning sleeve 21. During flushing, the flushing pipe 22 can be connected to an external water pump, and pressurized water can be input to flush the impeller.

[0024] See also Figure 3 and Figure 5The positioning sleeve 21 includes two sets of symmetrical jackets 211, a first sealing ring 212 and a second sealing ring 213. The facing sides of the two sets of jackets 211 are aligned and contacted with each other, and inserted into the outer shell 11, so that the two sets of jackets 211 support the flushing pipe 22. The first sealing ring 212 and the second sealing ring 213 are both sleeved on the outer walls of the two sets of jackets 211, and the first sealing ring 212 and the second sealing ring 213 are used to block the gap between the jacket 211 and the corresponding insertion hole of the outer shell 11, so that the positioning sleeve 21 can be sealed and connected to the outer shell 11 by the second sealing ring 213 and the first sealing ring 212.

[0025] In this embodiment, the jacket 211 includes a clamping portion 2111, a connecting portion 2112, a first arc groove 2113 and a second arc groove 2114. The clamping portion 2111 has a semicircular arc cross section, and the first arc groove 2113 and the second arc groove 2114 are formed on the outer wall of the clamping portion 2111. The first sealing ring 212 and the second sealing ring 213 can be respectively embedded in the first arc groove 2113 and the second arc groove 2114 for installation. The connecting portion 2112 is formed on the end surface of the clamping portion 2111 located outside the housing 11, and the connecting portion 2112 is in contact with the outer wall of the housing 11, so that the depth of the jacket 211 inserted into the housing 11 can be limited by the connecting portion 2112 during installation. The inner diameter of the clamping portion 2111 is matched with the outer diameter of the tube body 221 in the flushing tube 22 , so that the two sets of clamping portions 2111 can clamp the tube body 221 inserted therebetween, thereby assisting in fixing the tube body 221 .

[0026] See also Figure 4 The flushing pipe 22 may include a pipe body 221, a flange 222 and a filter seat 223. One end of the pipe body 221 is inserted into the circular inner cavity surrounded by the two sets of jackets 211, the flange 222 is formed on the end surface of the pipe body 221 located outside the two sets of jackets 211, and the filter seat 223 is detachably fixedly connected to one end of the pipe body 221 extending into the inner cavity of the shell 11. When fixing the flushing pipe 22, a plurality of locking members 23 can be passed through the flange 222 and the connecting portion 2112 and connected to the shell 11. A plurality of filter holes are formed in the middle of the filter seat 223 to prevent particles in the slurry from entering the pipe body 221.

[0027] In this embodiment, the locking member 23 may be a common fixing accessory such as a bolt or a rivet.

[0028] In all the schemes mentioned above, the connection between two parts can be selected according to actual conditions by welding, bolt and nut matching connection, bolt or screw connection or other well-known connection methods, which are not described here one by one. In the above, all fixed connections are preferably welded. Although the embodiments of the utility model have been shown and described, it can be understood by ordinary technicians in this field that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the utility model. The scope of the utility model is defined by the attached claims and their equivalents.

Claims

1. A slurry pump with an inlet end flushing device, comprising a pump body (10), wherein the pump body (10) comprises a housing (11), an input end (12) and an output end (13) formed on the housing (11), an impeller rotatably arranged in the housing (11), and a bracket (14) supported and arranged below the input end (12) and the housing (11), characterized in that: It also includes a flushing assembly (20) mounted on the housing (11) and facing the impeller in the housing (11), The flushing assembly (20) comprises a positioning sleeve (21), a flushing tube (22) and a plurality of locking members (23); the positioning sleeve (21) is inserted on the outer side of the outer shell (11), and one end of the positioning sleeve (21) facing the outer shell (11) extends into the inner cavity of the outer shell (11), and the positioning sleeve (21) and the outer shell (11) are sealedly connected; one end of the flushing tube (22) facing the positioning sleeve (21) is inserted into the inner cavity of the positioning sleeve (21), and the plurality of locking members (23) pass through one end of the flushing tube (22) away from the positioning sleeve (21) and are connected to the outer shell (11), so that the flushing tube (22) is fixed in the inner cavity of the positioning sleeve (21).

2. A slurry pump with an inlet end flushing device according to claim 1, characterized in that: The positioning sleeve (21) comprises two groups of symmetrical jackets (211), a first sealing ring (212) and a second sealing ring (213); the facing sides of the two groups of jackets (211) are aligned and in contact with each other, and the first sealing ring (212) and the second sealing ring (213) are both sleeved on the outer walls of the two groups of jackets (211), so that the positioning sleeve (21) is sealed and connected to the outer shell (11) by the second sealing ring (213) and the first sealing ring (212).

3. A slurry pump with an inlet end flushing device according to claim 2, characterized in that: The jacket (211) comprises a clamping portion (2111), a connecting portion (2112), a first arc-shaped groove (2113) and a second arc-shaped groove (2114); the clamping portion (2111) is configured to have a semicircular arc-shaped cross-section, and the first arc-shaped groove (2113) and the second arc-shaped groove (2114) are both formed on the outer wall of the clamping portion (2111); the first sealing ring (212) and the second sealing ring (213) are respectively embedded in the first arc-shaped groove (2113) and the second arc-shaped groove (2114); the connecting portion (2112) is formed on the end surface of the clamping portion (2111) located on the outer side of the housing (11), and the connecting portion (2112) is in contact with the outer wall of the housing (11).

4. A slurry pump with an inlet end flushing device according to claim 3, characterized in that: The flushing pipe (22) comprises a pipe body (221) and a flange (222), one end of the pipe body (221) is inserted into a circular inner cavity surrounded by two sets of jackets (211), the flange (222) is formed on the end surface of the pipe body (221) located outside the two sets of jackets (211), and a plurality of locking members (23) pass through the flange (222) and the connecting portion (2112) and are connected to the outer shell (11).

5. A slurry pump with an inlet end flushing device according to claim 4, characterized in that: The inner diameter of the clamping portion (2111) is matched to the outer diameter of the tube body (221), so that the two groups of clamping portions (2111) clamp and fix the tube body (221) inserted therebetween.

6. A slurry pump with an inlet end flushing device according to claim 4 or 5, characterized in that: The flushing pipe (22) further comprises a filter seat (223), the filter seat (223) being detachably fixedly connected to one end of the pipe body (221) extending into the inner cavity of the outer shell (11), and a plurality of filter holes are formed in the middle of the filter seat (223).

Images