DE4217204C2 - Solid fuel pump - Google Patents

Solid fuel pump

Info

Publication number
DE4217204C2
DE4217204C2 DE19924217204 DE4217204A DE4217204C2 DE 4217204 C2 DE4217204 C2 DE 4217204C2 DE 19924217204 DE19924217204 DE 19924217204 DE 4217204 A DE4217204 A DE 4217204A DE 4217204 C2 DE4217204 C2 DE 4217204C2
Authority
DE
Germany
Prior art keywords
shut
pump
piston
housing
valve
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
DE19924217204
Other languages
German (de)
Other versions
DE4217204A1 (en
Inventor
Matthias Dipl Ing Hahn
Volker Dipl Ing Stapelfeldt
Peter Dipl Ing Zoellner
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ABEL GMBH & CO HANDELS- UND VERWALTUNGSGESELLSCHAF
Original Assignee
Abel GmbH and Co KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Abel GmbH and Co KG filed Critical Abel GmbH and Co KG
Priority to DE19924217204 priority Critical patent/DE4217204C2/en
Priority claimed from DE9208276U external-priority patent/DE9208276U1/de
Priority claimed from DE1993502498 external-priority patent/DE59302498D1/en
Publication of DE4217204A1 publication Critical patent/DE4217204A1/en
Application granted granted Critical
Publication of DE4217204C2 publication Critical patent/DE4217204C2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B7/00Piston machines or pumps characterised by having positively-driven valving
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B15/00Pumps adapted to handle specific fluids, e.g. by selection of specific materials for pumps or pump parts
    • F04B15/02Pumps adapted to handle specific fluids, e.g. by selection of specific materials for pumps or pump parts the fluids being viscous or non-homogeneous

Description

The invention relates to a solid pump the preamble of claim 1.

Solid type pumps of the generic type serve, for example for the transport of municipal and industrial mechanically dewatered sludges, for backfilling and rear mortar development in mining, reactor feed in process technology nik, the promotion of intermediates and residues from the chemical industry, the production of residues those from the petroleum and mineral oil industry, but also from the paper industry. They can also be used for highly viscous materials with coarse materials, such as  Biomass from pressed fruit or slaughterhouse waste in the rendering of carcasses and for dry substances such as Paper, straw, fibrous substances and manure.

A solid pump of the type mentioned is from the DE 25 09 081 C2 has become known. At such a feast the feed pump acts on a delivery piston with a cylinder together, which is arranged below a loading container is not. When the delivery piston is retracted, the Zy relieves a vacuum that sucks the medium as soon as the delivery piston has left the cylinder. Here will the front end of the cylinder through a slide valve kept closed. The piston moves in during the delivery stroke the cylinder and the slide valve opens the pressure line so that the piston moves the medium into the line can impress. This closes at the end of the working stroke Slider valve the pressure line and shears everyone Residue from the front of the piston.

In the known solid pump, this is plate-shaped Shut-off device with metallic sealing. Setup and radio tion of the known shut-off device have some Disadvantages. Because feast cannot be prevented substances, especially abrasive substances, in the feet  area, high wear can occur surrender. There are therefore several wear from time to time exchange parts. The penetration of solids into the Guide area can restrict the function of the pump. For example, fabrics below the quadrangle collect the slider, which is damaged due to the impact can be damaged. Also above the plate-shaped Ab blocking organs can accumulate through which the correct operation is impaired.

From GB 14 36 555 a tube-like has become known To close the opening in that a plate-like Slider with the lip-like end of a ring seal that cooperates in the tubular opening is arranged. The ring seal consists of a compliant Material. The plate itself is made with the help of Nylon pins guided on opposite sides Grip the plate without play. To freedom of play The pins can also be used to ensure removal appropriate screw connections are adjusted. At abrasive substances such as those used in the operation of solid pumps emerge, the known valve arrangement can not use.

The invention is therefore based on the object of a fixed to create a fabric pump whose shut-off valve is wear-resistant works, consists of a few wear parts and one has high functional reliability.

This object is achieved by the features of the patent claim 1.

In the solids pump according to the invention, this is flat shaped shut-off device not free of play by means of suitable Guided surfaces, as described in the entry benen known pump is the case, but with play. On the side opposite the feed cylinder are in Direction of movement of the shut-off member spaced guide  sections provided with the shut-off device in one grip. Limited guide sections can also be used the narrow sides of the shut-off device are provided, because with it in its level - albeit with play - is guided. The shut-off device can be articulated on an actuating rod which, in turn, are not a management function for has the shut-off device. On the to the feed cylinder too the shut-off device works with the off side pipe opening forming the opening together, whereby a seal and a guide is produced at the same time. It is based on the knowledge that in the case of Return stroke of the delivery piston and the creation of a vacuum in the cylinder the shut-off device against the pipe section ge is pressed and thereby brings about the seal. Possible existing on the end face of the pipe section Solid particles that affect a seal, who by the knife-like edge of the shut-off device stripped of its movement into the closed position.

This is in the solid pump according to the invention Shut-off device in a space of the valve housing, which of the Exit opening of the cylinder is freely accessible. It becomes aware of the penetration of medium into it Accepted housing space. However, this is not annoying because  the guide sections only partially on the shut-off device grasp and run this with play, so that fixing the shut-off device is not to be feared. The Ver wear in the guide area is minimal.

Overall, the shut-off valve of the invention works Pump reliable. It consists of a few ver wear parts together and requires relatively little production costs.

It is known that the shut-off device or the slide of Shut-off valve to be actuated using an actuating rod term, which in turn is operated by a hydraulic cylinder becomes. It is understood that the slider receiving Space of the valve housing with a view to sealing must have the actuation. Therefore sees a Ausgestal tion of the invention that a seal on the housing arrangement for the actuating rod is provided. A however, such a seal is unproblematic and can for example, a known gland packing.

There are various constructive options for the management of the shut-off device. One is fiction moderate in that the guide sections are linear with the  Interact with the shut-off device. For this purpose, after a further embodiment of the invention cylindrical Guide pins are provided, the cylinder surface with interact with the shut-off device. Become the guide pin provided with a collar, this can be with its front carry out a lateral guidance of the shut-off device. The guide pins are in a further embodiment the invention preferably in a threaded bore in the Wall of the valve body screwed in so that everyone time can be dismantled easily if wear has occurred.

The free edge of the Ab with a knife edge blocking organ is preferably at a distance from the assigned neten wall of the valve housing. It is after an exit design of the invention in the form of a convex arc, where its radius is the radius of the outlet opening fits. Accordingly, it is also advantageous if the inner wall of the Housing is concave with a slightly larger shape Radius than that of the shear edge.

In the known solid pump, the knife edge of the Shut-off device with the facing surface of a guide  plate together, of which the delivery piston in its front position is a short distance away. In the invention according to the pump, however, the gate valve works with the End face of a pipe section together. With a Ausge staltung the invention is such a pipe section freely into the valve housing and after a white ter embodiment of the invention preferably from one separate section formed in an opening in the Valve housing is sealed. This pipe down cut is a wearing part that is easily replaced can be.

An embodiment of the invention is described below hand explained in more detail by drawings.

Fig. 1 shows a section through the shut-off valve of a single-piston solid pump in the closed position.

FIG. 2 shows a somewhat enlarged section of the shut-off valve in the open position, rotated by 90 ° with respect to the illustration in FIG. 1.

The shut-off valve 10 shown in FIGS. 1 and 2 has an upright housing 12 of essentially rectangular cross section. Only the rear wall in the conveying direction (arrow R) is shown slightly inclined. The housing 12 is located at the end of a delivery cylinder 17 , in which a hydraulically operated delivery piston 19 is arranged, as described in detail in DE 25 09 081 (the delivery piston 19 is shown in thin lines in its forward position). The delivery cylinder 17 en det on a pipe section 14 which is sealingly arranged in an opening of the opening facing the delivery cylinder 17 wall. The pipe section 14 receives the feed cylinder 17 , so that a cylindrical passage of the same diameter water is formed into the interior of the housing. The Rohrab section 14 forms an outlet opening 16 for the delivery cylinder 17 , which is aligned with an opening 18 in a flange 20 which is attached to the housing 12 and to which a pressure line can be flanged. The passage from the opening 16 to the opening 18 can be blocked by a plate-shaped shut-off device 22 . From the locking member 22 is rectangular in the upper region and rounded in a circular arc at the lower edge. By means of a bevel 24 there is an arcuate knife edge 26 which interacts with the end face of the pipe section 14 . In the closed position shown in Fig. 1 of the shut-off device 22 , the knife edge 26 has a stand from the lower wall 28 of the housing 12 , which, as shown in Fig. 2, has a concave inside with a radius that is slightly larger than that Radius of the knife edge 26 .

The shut-off device 22 is by means of a pin 30 in a fork 32 of an actuating rod 34 with play is deflected, which leads upwards via a gland seal 36 from the housing 12 . The hydraulic actuation of the actuating rod 34 takes place by means of the drive cylinder 15 .

In particular from Fig. 1 shows that slide 22 and actuating rod 34 are arranged freely in a space 38 of the housing 12 with the passage between the Publ voltages 16, 18 is connected. In the space 38 , cylindrical guide pins 40 are also arranged at a distance from one another, which cooperate with the side of the shutoff element 22 facing away from the pipe section 14 . The structure of the guide pin 40 is shown in more detail in FIG. 2. They have a cylindrical outer section 42 which cooperates with the facing side of the shut-off element 22 . A larger diameter section 44 , which adjoins the section 42 , forms a shoulder for lateral guidance of the shut-off element 22nd A threaded section 46 adjoins this in a threaded bore 48 of the housing 12 . Finally, the pins 40 have a head 50 , which can be gripped by a tool and bears against the outer wall of the housing 12 . Accordingly, the shut-off device 22 is guided in a line-like manner on the side facing the pipe section 14 and only partially at the side, so that medium can penetrate into the space 38 between the guide pin 40 without, however, impairing the guidance, because the individual guide surfaces include the shut-off device 22 Lead game. On the side of the shut-off element 22 facing the cylinder, guidance takes place through the end face of the tube section 14 , which at the same time also forms a seal when a negative pressure is generated in the cylinder during the return stroke of the delivery piston. The Rohrab section 14 is a wearing part that can be replaced quickly and easily.

In the embodiment, a single-piston solid pump is shown, which can be filled from above via a filler neck 50 . It is understood that the shut-off valve shown can also be used for two-piston pumps of the type mentioned.

Claims (11)

1. solids pump with at least one reciprocating piston, which cooperates with an axially arranged in the displacement path of the piston cylinder, in which in the one end position of the piston the working space is directly connected to a loading container, in the conveying direction of the piston behind the Cylinder a slide-type shut-off valve is provided, further a drive device for the piston and for the shut-off valve, which are actuated by a control device such that the shut-off valve is closed during the return of the piston and the shut-off valve is opened during the advance of the piston, the shut-off valve has a plate-shaped, longitudinally displaceable shut-off element guided in guides, the edge of which faces the piston is designed like a knife, characterized in that the plate-shaped shut-off element ( 22 ) on the cylinder side from the facing end face of an outlet opening ( 16 ) for the cylinder-forming tubular portion (14) and on the opposite side of the direction of movement processing of the obturator (22) spaced Führungsab cut (40) is guided with play and the guide portions (40) and the obturator (22) and optionally an actuating rod ( 34 ) for the shut-off device ( 22 ) are arranged in a space ( 38 ) freely accessible from the outlet opening ( 16 ).
2. Pump according to claim 1, characterized in that an actuating rod ( 34 ) for the shut-off element ( 22 ) is arranged in a housing ( 12 ) and in the housing ( 12 ) a sealing arrangement ( 36 ) for the actuating rod ( 34 ) is provided .
3. Pump according to claim 1 or 2, characterized in that the guide sections ( 40 ) cooperate linearly with the shut-off device ( 22 ).
4. Pump according to claim 3, characterized in that the guide sections are formed by cylindrical pins ( 40 ), the cylindrical surface ( 42 ) of which cooperate with the shut-off element ( 22 ).
5. Pump according to claim 4, characterized in that the guide pins ( 40 ) can be screwed into threaded bores ( 48 ) which are formed in the wall of the valve housing ( 12 ).
6. Pump according to one of claims 1 to 4, characterized in that the knife-like edge ( 26 ) of the shut-off element ( 22 ) is convex in the shape of a circular arc.
7. Pump according to claim 6, characterized in that the knife-like edge ( 26 ) facing the inner wall of the housing ( 12 ) is concave with a slightly larger radius than that of the shearing edge ( 26 ).
8. Pump according to one of claims 1 to 7, characterized in that the knife-like edge ( 26 ) of the shut-off element ( 22 ) is at a distance from the associated wall ( 28 ) of the housing ( 12 ) when the shut-off element ( 22 ) in the Closed position.
9. Pump according to one of claims 1 to 8, characterized in that the pipe section ( 14 ) stands freely in the housing ( 12 ).
10. Pump according to one of claims 1 to 9, characterized in that a separate pipe section ( 14 ) in an opening of the housing ( 12 ) is sealingly received.
11. Pump according to one of claims 1 to 10, characterized in that the shut-off device ( 22 ) at least in the region of the shearing edge ( 26 ) consists of a hard steel or hard metal.
DE19924217204 1992-05-23 1992-05-23 Solid fuel pump Expired - Fee Related DE4217204C2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19924217204 DE4217204C2 (en) 1992-05-23 1992-05-23 Solid fuel pump

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
DE19924217204 DE4217204C2 (en) 1992-05-23 1992-05-23 Solid fuel pump
DE9208276U DE9208276U1 (en) 1992-05-23 1992-05-23
DE1993502498 DE59302498D1 (en) 1992-05-23 1993-04-28 Solid fuel pump
EP19930106872 EP0584453B1 (en) 1992-05-23 1993-04-28 Pump for solid materials
JP5142983A JPH0681764A (en) 1992-05-23 1993-05-21 Pump for viscous substance

Publications (2)

Publication Number Publication Date
DE4217204A1 DE4217204A1 (en) 1993-11-25
DE4217204C2 true DE4217204C2 (en) 1994-04-14

Family

ID=6459644

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19924217204 Expired - Fee Related DE4217204C2 (en) 1992-05-23 1992-05-23 Solid fuel pump

Country Status (3)

Country Link
EP (1) EP0584453B1 (en)
JP (1) JPH0681764A (en)
DE (1) DE4217204C2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
MXPA04001284A (en) 2001-08-11 2005-06-06 Sicco K S Method for transfer of particulate solid products between zones of different pressure.

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2319981A (en) * 1941-12-03 1943-05-25 James H Fitzgerald Pump for concrete and the like
GB1436555A (en) * 1972-09-01 1976-05-19 F R Eng Co Ltd Valve forfluent material
CH568481A5 (en) * 1974-03-18 1975-10-31 Seiler Niklaus
US4693452A (en) * 1986-03-12 1987-09-15 Triten Corporation Valve
DE3915980C1 (en) * 1989-05-17 1990-07-19 Metalpraecis Berchem + Schaberg Gesellschaft Fuer Metallformgebung Mbh, 4650 Gelsenkirchen, De Shut-off slide housing - has removable lid, inlet and sealed outlet adjoined by slide plate and connected operating rod

Also Published As

Publication number Publication date
DE4217204A1 (en) 1993-11-25
EP0584453A1 (en) 1994-03-02
JPH0681764A (en) 1994-03-22
EP0584453B1 (en) 1996-05-08

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Legal Events

Date Code Title Description
OP8 Request for examination as to paragraph 44 patent law
8127 New person/name/address of the applicant

Owner name: ABEL GMBH & CO HANDELS- UND VERWALTUNGSGESELLSCHAF

D2 Grant after examination
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee