CN202645981U

CN202645981U - Pump head of slush pump

Info

Publication number: CN202645981U
Application number: CN201220313939XU
Authority: CN
Inventors: 邵丙宏
Original assignee: SHANDONG ZHONGTAN MACHINERY CO Ltd
Current assignee: SHANDONG ZHONGTAN MACHINERY CO Ltd
Priority date: 2012-07-02
Filing date: 2012-07-02
Publication date: 2013-01-02
Anticipated expiration: 2022-07-02

Abstract

The utility model provides a pump head of a slush pump. The pump head comprises a shell, wherein a working cavity is formed in the shell; a piston is arranged in the working cavity and is connected to a pull rod; a slurry sucking channel and a slurry discharging channel are arranged in the shell; check valves are arranged on the slurry sucking channel and the slurry discharging channel; the slurry sucking channel and the slurry discharging channel are respectively positioned below and above the working cavity; the working cavity is communicated with the slurry sucking channel and the slurry discharging channel; the check valves of the slurry sucking channel and the slurry discharging channel comprise valve covers, steel balls and valve seats; the valve covers and the valve seats are respectively arranged in conical holes of the pump head; the valve covers are positioned above the valve seats; steel covers capable of accommodating the steel balls are arranged on the lower parts of the valve covers; and the steel balls are placed on the valve seats. According to the pump head of the slush pump, arrangement modes of the slurry sucking channel and the slurry discharging channel are changed, so that the size of the whole pump head is reduced, the weight is lightened, and the pump head is convenient to manufacture; and because the steel ball type check valves are used, the pump head is conveniently mounted and replaced, the input and output efficiencies of the slush are improved, the operation is stable, and the service life of the pump head is prolonged.

Description

A kind of slurry pump head

Technical field

The utility model relates to a kind of pump head of slurry pump, belongs to the slurry pump technical field.

Background technique

Slurry pump is the equipment for slurry transportation, is widely used in the engineerings such as mine, geological drilling, colliery, railway, expressway, water conservancy and hydropower, bridge, tall building, foundation stabilization.Slurry pump commonly used is piston type or plunger type, its structure comprises pump head and power mechanism, drives crank up by power mechanism, and bent axle drives piston again or plunger moves reciprocatingly in pumping cylinder, under the alternating action of suction valve and expulsion valve, realize the purpose of force feed mud.

Fig. 1 has provided the structure of existing slurry pump head, usually adopt the double cylinder double acting mode, in housing 1, be provided with active chamber, piston 7 is installed in the active chamber, piston 7 is connected on the pull bar 6, be provided with slurry intake channel 2 and pulp passage 4 on the housing 1, slurry intake channel 2 and pulp passage 4 are arranged in parallel, both height are identical, be positioned on the same level, piston 7 is between stock inlet 2 and grout outlet 4, and slurry intake channel 2 and pulp passage 4 places are provided with one-way valve 3, also is provided with on the housing 1 and is with manometric air chamber 8.Pull bar 6 drives piston 7 to-and-fro motion between slurry intake channel 2 and pulp passage 4 by a bent axle and finishes into slurry and pulp.Because slurry intake channel 2 is identical with the height of pulp passage 4, this is just so that the distance between slurry intake channel 2 and the pulp passage 4 is larger, and piston 15 has also just increased the volume and weight of pump head 1 between slurry intake channel 2 and pulp passage 3.The one-way valve 3 at slurry intake channel 2 and pulp passage 4 places is tooth-shape structures, as shown in Figure 2, on valve seat 9, by gland 11 seal ring 10 to be installed to form, valve seat 9 moves up and down in the valve seat orifice of housing 1 to be realized opening and closing, seal by seal ring 10 when closing, but seal ring 10 easily damages, and loses seal action, needs often to change.

Summary of the invention

The problem that the utility model is large for the volume and weight that existing slurry pump head exists, use inconvenient maintenance provides that a kind of compact structure, volume are little, the slurry pump head of smooth running.

Slurry pump head of the present utility model, adopt following technical solution:

This pump head, comprise shell, in shell, be provided with active chamber, piston is installed in the active chamber, piston is connected on the pull bar, be provided with midge passage and plasma discharge passage in the shell, midge passage and plasma discharge passage place are provided with one-way valve, midge passage and plasma discharge passage lay respectively at below and the top of active chamber, active chamber and midge passage and plasma discharge channel connection, and the one-way valve at midge passage and plasma discharge passage place comprises valve gap, steel ball and valve seat, valve gap and valve seat are installed in respectively in the taper hole of pump head, valve gap is positioned at the top of valve seat, and bonnet lower is provided with a ball cover that can hold steel ball, and steel ball is placed on the valve seat.

The utility model has changed the setting type of midge passage and plasma discharge passage, shape and the structure of shell have also been changed simultaneously, so that whole pump head volume reduces, weight saving, easily manufactured, guaranteed accuracy of manufacturing, adopt simultaneously the steel ball type one-way valve, be convenient to install and change, improved mud input and delivery efficiency, smooth running, whole service life improves.

Description of drawings

Fig. 1 is the structural representation of existing slurry pump head.

Fig. 2 is the structural representation that has the one-way valve that adopts in the slurry pump head now.

Fig. 3 is the structural representation of the utility model slurry pump head.

Fig. 4 is the structural representation of the ball check valve that adopts in the utility model slurry pump head.

Wherein: 1, housing, 2, slurry intake channel, 3, one-way valve, 4, the pulp passage, 5, connect 6, pull bar, 7, piston, 8, air chamber in, 9, valve seat, 10, seal ring, 11, gland, 12, shell, 13, midge passage, 14, ball check valve, 15, the plasma discharge passage, 16, piston, 17, pull bar, 18, casing, 19, valve gap, 20, ball cover, 21, steel ball, 22, valve seat.

Embodiment

Fig. 3 has provided the structure of the utility model slurry pump head, and this pump head comprises shell 12, is provided with active chamber in shell 12, and piston 16 is installed in active chamber, and piston 16 is connected on the pull bar 17, is provided with midge passage 13 and plasma discharge passage 15 on the shell 12.Midge passage 13 and plasma discharge passage 15 lay respectively at below and the top of active chamber, and active chamber is communicated with midge passage 13 and plasma discharge passage 15.Plasma discharge passage 15 is positioned at the top of midge passage 13, and both height of midge passage 13 and plasma discharge passage 15 are different, are positioned on the different horizontal planes, and the horizontal equivalent that this has just reduced midge passage 13 and plasma discharge passage 15 also reduces with regard to the volume that makes pump head.Midge passage 13 and plasma discharge passage 15 places are provided with ball check valve 14, the structure of this one-way valve as shown in Figure 4, comprise valve gap 19, steel ball 21 and valve seat 22, valve gap 19 and valve seat 22 are installed in respectively in the taper hole in the shell 12, valve gap 19 is positioned at the top of valve seat 22, the bottom of valve gap 19 is provided with a ball cover 20 that can hold steel ball, and steel ball 21 is placed on the valve seat 22; When needs one-way valve 14 was opened, steel ball 21 was inhaled in the ball cover 20, when needing one-way valve 14 closure, steel ball 21 is dropped on the valve seat 22 by ball-and-socket 20, and the used one-way valve of such ball check valve 14 and existing double cylinder slip pump is compared, and sealing is reliable, not fragile, long service life.

Pull bar 17 to-and-fro motion under the drive of slurry pump power mechanism, the also to-and-fro motion in active chamber of piston 16 that is connected with pull bar 17, the ball check valve 14 at midge passage 13 and plasma discharge passage 15 places is is alternately opened and closed, under the alternating action of two ball check valves, realize input and the output of mud.

Above-mentioned slurry pump head is compared with existing structure, change has occured in the setting type of midge passage 13 and plasma discharge passage 15, both spacings reduce, and make the shape of shell and structure that change also occur, and whole pump head volume reduces, weight saving, gross weight is 1/3 of existing pump head, simultaneously easily manufactured, be easy to guarantee accuracy of manufacturing, be convenient to install and change, the mud input improves with delivery efficiency, has guaranteed the smooth operation of slurry pump.

Claims

1. slurry pump head, comprise shell, in shell, be provided with active chamber, piston is installed in the active chamber, piston is connected on the pull bar, be provided with midge passage and plasma discharge passage in the shell, midge passage and plasma discharge passage place are provided with one-way valve, it is characterized in that: midge passage and plasma discharge passage lay respectively at below and the top of active chamber, active chamber and midge passage and plasma discharge channel connection, and the one-way valve at midge passage and plasma discharge passage place comprises valve gap, steel ball and valve seat, valve gap and valve seat are installed in respectively in the taper hole of pump head, valve gap is positioned at the top of valve seat, and bonnet lower is provided with a ball cover that can hold steel ball, and steel ball is placed on the valve seat.