CN204113620U - A kind of slurry pump self-unloading pump head - Google Patents
A kind of slurry pump self-unloading pump head Download PDFInfo
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- CN204113620U CN204113620U CN201420471162.9U CN201420471162U CN204113620U CN 204113620 U CN204113620 U CN 204113620U CN 201420471162 U CN201420471162 U CN 201420471162U CN 204113620 U CN204113620 U CN 204113620U
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Abstract
The utility model discloses a kind of slurry pump self-unloading pump head, comprise pump head body, the chamber of pump head body is provided with stock inlet, and the other end is provided with grout outlet, and stock inlet is connected with pulp-inlet pipe, the chamber of pump head body is connected with pump head internal pressure adjustment device; Slurry pump holddown spring valve is provided with in the chamber of pump head body; Pump head internal pressure adjustment device comprises pressure valve; Be provided with cavity in pressure valve, in cavity, be provided with the dividing plate being divided into front cavity, rear chamber, the chamber of front cavity and pump head body; Rear chamber is connected with pulp-inlet pipe by pipeline; Dividing plate is provided with unloading hole; The rear chamber internal fixtion of pressure valve has holddown spring, and the end of holddown spring is provided with can the baffle element of airtight unloading hole.It is simple that the utility model has structure, feature easy to maintenance.
Description
Technical field
The utility model relates to a kind of accessory of mud fluid pump, is specifically related to a kind of slurry pump self-unloading pump head.
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.Conventional slurry pump 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 or plunger to move reciprocatingly in pumping cylinder again, under the alternating action of suction valve and expulsion valve, realize the object of force feed mud.In conventional direct circulation probing, it is by earth's surface flushing medium--Qing Shui ﹑ mud or polymer flush fluid are under pressure, through the bottom of too high pressure soft pipe ﹑ water tap and drill string central hole direct sending drill bit, to reach cooling drill bit, the landwaste cut removed and is transported to the object on earth's surface.When slurry pump in use stops operation, in slurry pump, there is high pressure.Because slurry pump inner structure is complicated, the working life of component in slurry pump when this high pressure is higher, can be affected.Particularly, when slurry pump is breaking down and stopping operation, when needing field maintenance, need the high pressure eliminated fast in slurry pump, just can open slurry pump and keep in repair, in the urgent need to the device of slurry pump inner high voltage can be eliminated rapidly.In addition, in the pump head of slurry pump, there is high pressure, if overpressure can cause the damage of components in pump head, affect the working life of slurry pump.
Model utility content
The purpose of this utility model is to overcome the deficiencies in the prior art, provides a kind of slurry pump self-unloading pump head.
The technical solution adopted in the utility model is as follows.
A kind of slurry pump self-unloading pump head, comprise pump head body, the chamber of pump head body is provided with stock inlet, and the other end is provided with grout outlet, and stock inlet is connected with pulp-inlet pipe, it is characterized in that: the chamber of pump head body is connected with pump head internal pressure adjustment device; Slurry pump holddown spring valve is provided with in the chamber of pump head body;
Pump head internal pressure adjustment device comprises pressure valve; Be provided with cavity in pressure valve, in cavity, be provided with the dividing plate being divided into front cavity, rear chamber, the chamber of front cavity and pump head body; Rear chamber is connected with pulp-inlet pipe by pipeline; Dividing plate is provided with unloading hole; The rear chamber internal fixtion of pressure valve has holddown spring, and the end of holddown spring is provided with can the baffle element of airtight unloading hole; When the intrinsic pressure medium of pump head is no more than setting value, the airtight unloading hole of baffle element under the effect of holddown spring, when the intrinsic pressure medium of pump head exceedes setting value, medium breaks through the airtight inflow rear chamber of baffle element and flows into pulp-inlet pipe from pipeline;
Slurry pump holddown spring valve comprises valve seat and valve body, is provided with endoporus in valve seat, and the sidewall of valve seat is provided with some liquid ports, and the bottom surface certain altitude of inner side surface from the bottom surface of liquid port to distance liquid port of endoporus is the conical surface; Valve body is inlaid with, the conical surface of the salable endoporus of valve body in the endoporus of valve seat; The top of valve body is provided with holddown spring, and the top of holddown spring is provided with pressing plate, and the diameter of pressing plate is not more than the diameter of the endoporus at the top of valve seat, and pressing plate is fixed on the endoporus of valve seat by fixing device; When the pressure of the medium flowed into from the endoporus bottom of valve seat exceedes setting value, medium can break through the stop of valve body and flow out through the conical surface, liquid port.
Further, the top of the endoporus of valve seat is provided with annular recess, is inlaid with the stretching ring of not through annular recess, is fixed on the endoporus of valve seat by stretching ring by pressing plate in annular recess; Stretching ring is jaggy circular in band; The two ends of stretching ring are provided with the hole of stretching ring for convenience detach; The hole of stretching ring is inlaid with cylindrical bump.
Further, the top of the endoporus of valve seat is provided with screw thread and is connected with sealing screw by this threaded screw, is fixed on by pressing plate on the top of the endoporus of valve seat by sealing screw; In sealing screw, Vertical dimension is provided with hole; Valve body comprises valve body pedestal and is movably connected in the anti-friction valve on valve body pedestal; The top of valve body pedestal is provided with cylindrical grooves, and the outer side wall of holddown spring bottom contacts with the madial wall of cylindrical grooves; The bottom of valve body pedestal is provided with cylindrical grooves, and cylindrical grooves is provided with screw thread, and the shape on the top of anti-friction valve and the shape of cylindrical grooves adapt and its outer side wall is also provided with screw thread, and anti-friction valve passes through the thread set on its top in cylindrical grooves.
Further, the centre of form of pressing plate bottom surface is provided with cylindrical bump, and cylindrical bump inserts in the cavity of holddown spring, and the madial wall on holddown spring top contacts with the outer side wall of cylindrical bump.
Further, the centre of form of the rear sidewall of pressure valve is provided with hole, and be provided with internal thread in hole and be provided with externally threaded screw rod, the front end of screw rod is provided with holddown spring base, and the rear end of holddown spring is connected with holddown spring base; The trailing flank of the rear sidewall of pressure valve is provided with some projections;
Screw rod tightens the setscrew nut that trailing flank position is provided with iron plate, cross section is regular polygon of the rear sidewall pasting pressure valve; Iron plate is provided with projection, lower projection, and when setscrew nut clamping iron plate, the lower projection of iron plate is close to a sidewall of setscrew nut, and the upper projection of iron plate is close to a sidewall of the projection on the trailing flank of the rear sidewall of pressure valve.
Further, the centre of form of the rear sidewall of pressure valve is provided with projection, and the cross section of projection is regular polygon; The centre of form on the rear sidewall of pressure valve is provided with hole, and be provided with internal thread in hole and be provided with externally threaded screw rod, the front end of screw rod is provided with holddown spring base, and the rear end of holddown spring is connected with holddown spring base;
The setscrew nut that trailing flank position is provided with iron plate, cross section is regular polygon of the projection of the rear sidewall of screw rod upward pressure valve; Iron plate is provided with projection, lower projection, and when setscrew nut clamping iron plate, the lower projection of iron plate is close to a sidewall of setscrew nut, and the upper projection of iron plate is close to a sidewall of the projection of the rear sidewall of pressure valve.Iron plate wall is thinner, and on it, projection, lower projection pliers can bend.When setscrew nut clamping iron plate, bend iron plate with pliers, and press under it, make projection be close to a sidewall of setscrew nut, the upper projection of iron plate is close to a sidewall of the projection of the rear sidewall of pressure valve.
Further, the trailing flank of the head of screw rod is provided with square groove; The outer side surface of the rear sidewall of described pressure valve is provided with dust-proof cover.
Further, the cavity in pressure valve is cylindric; Baffle element front end is cone table shape; The stage casing of baffle element is cylindric and is slightly less than the diameter of the cavity in pressure valve, and the outer side surface in the stage casing of baffle element is provided with seal ring; The rear end of baffle element is provided with groove; The front end of holddown spring is arranged in the groove of the rear end of baffle element.
Further, the sidewall beyond the dividing plate of pressure valve is provided with tap hole, and tap hole is provided with tap, and tap is connected with pipeline; Tap perpendicular to pressure valve medial axis and with pulp-inlet pipe in same plane.
Further, linked together by adpting flange between pressure valve and pump head body; Seal ring is provided with between pressure valve and pump head body.
The beneficial effects of the utility model are: slurry pump holddown spring valve is provided with holddown spring, when solving frequency of impact height, valve body is difficult to timely closedown, affect the problem of the volumetric efficiency of slurry pump, grout outlet is set directly on the sidewall of valve seat, MEDIA FLOW access line is short, medium carries a small amount of solid particle and also can flow out fast, and flow efficiency is high; Surface of contact between valve seat and valve body is the conical surface, and the solid particle that medium carries is not easy to stop on the contact surface, circulates effective; Device quick release, changes fragile part in time, shortens termination of pumping and changes the part time, drilling efficiency is significantly improved.Due to the existence of holddown spring, pump head chamber stands the low of inner pressure ratio prior art pump head.While original plasma discharge mouth head pressure, the chamber of pulp-inlet pipe pump head adds pump head internal pressure adjustment device, when pressure in the chamber of pump head exceedes setting value, discharge a part of medium to pulp-inlet pipe by pump head internal pressure adjustment device, eliminate the pressure in slurry pump.This device has automatic regulation function, can component in the available protecting pump housing, improves the working life of slurry pump.This device also effectively can eliminate the high pressure of slurry pump, when slurry pump is breaking down and stopping operation, when needing field maintenance, can directly open slurry pump and keep in repair, and does not need to wait as long for slurry pump inner high voltage and naturally eliminate.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model slurry pump self-unloading pump head embodiment 1.
The structural representation of the pump head internal pressure adjustment device of Fig. 2 self-unloading pump head embodiment 1.
Fig. 3 is the structural representation of the utility model slurry pump self-unloading pump head embodiment 2.
Fig. 4 is the structural representation of the pump head internal pressure adjustment device of self-unloading pump head embodiment 2.
Fig. 5 is the structural representation of slurry pump holddown spring valve.
Fig. 6 is the plan view of Fig. 5.
Fig. 7 is the sectional drawing of Fig. 6 along A-A '.
Fig. 8 is the structural representation of another slurry pump holddown spring valve.
Wherein: pump head body-1; Unloading hole-2; Dividing plate-3; Pressure valve-4; Baffle element-5; Groove-51; Seal ring-52; Holddown spring-6; Screw rod-7; Setscrew nut-8; Protruding-81; Upper projection-82; Lower projection-83; Iron plate-84; Head-9; Square groove-91; Rear sidewall-10; Projection-101; Dust-proof cover-11; Holddown spring base-12; Rear chamber-13; Tap-14; Pipeline-15; Pulp-inlet pipe-16; Chamber-17; Seal ring-18; Front cavity-19; Adpting flange-20; Grout outlet-21; Stock inlet-22; Slurry pump holddown spring valve-23; Valve seat-2301; Pressing plate-2302; Cylindrical bump-2321; Stretching ring-2303; Hole-2331; Breach-2332; Cylindrical bump-2333; Holddown spring-2304; Valve body-2305; Valve body pedestal-2351; Cylindrical grooves-2352; Cylindrical grooves-2353; Anti-friction valve-2354; The conical surface-2306; Endoporus-2307; Top-2371; Liquid port-2308; Sealing screw-2309; Hole-2391.
Embodiment
Below, in conjunction with the accompanying drawings and embodiments the utility model is described further.
Embodiment 1.As shown in Fig. 1 Fig. 2, a kind of slurry pump self-unloading pump head, comprises pump head body 1, chamber 17 one end of pump head body 1 is provided with stock inlet 22, the other end is provided with grout outlet 21, and stock inlet 22 is connected with pulp-inlet pipe 16, it is characterized in that: the chamber 17 of pump head body 1 is connected with pump head internal pressure adjustment device.Slurry pump holddown spring valve 23 is provided with in the chamber 17 of pump head body 1.
Pump head internal pressure adjustment device comprises pressure valve 4; Be provided with cavity in pressure valve 4, be provided with the dividing plate 3 being divided into front cavity 19, rear chamber 13 in cavity, front cavity 19 is communicated with the chamber 17 of pump head body 1; Rear chamber 13 is connected with pulp-inlet pipe 16 by pipeline 15; Dividing plate 3 is provided with unloading hole 2; Rear chamber 13 internal fixtion of pressure valve 4 has holddown spring 6, and the end of holddown spring 6 is provided with can the baffle element 5 of airtight unloading hole 2; When the pressure medium in pump head body 1 is no more than setting value, the airtight unloading hole 2 of baffle element 5 under the effect of holddown spring 6, when the pressure medium in pump head body 1 exceedes setting value, medium breaks through the airtight inflow rear chamber 13 of baffle element and flows into pulp-inlet pipe 8 from pipeline 15.
The centre of form of the rear sidewall 10 of pressure valve 4 is provided with hole, and be provided with internal thread in hole and be provided with externally threaded screw rod 7, the front end of screw rod 7 is provided with holddown spring base 12, and the rear end of holddown spring 6 is connected with holddown spring base 12; The trailing flank of the rear sidewall 10 of pressure valve 4 is provided with some protruding 81.
Screw rod 7 tightens the setscrew nut 8 that trailing flank position is provided with iron plate 84, cross section is regular polygon of the rear sidewall 10 pasting pressure valve 4; Iron plate 84 is provided with projection 82, lower projection 83, when setscrew nut 8 clamps iron plate 84, the lower projection 83 of iron plate 84 is close to a sidewall of setscrew nut 8, and the upper projection 82 of iron plate 84 is close to a sidewall of the projection 81 on the trailing flank of the rear sidewall 10 of pressure valve 4.
The trailing flank of the head 9 of screw rod 7 is provided with square groove 91.
The outer side surface of the rear sidewall 10 of described pressure valve 4 is provided with dust-proof cover 11.
Cavity in pressure valve 4 is cylindric; Baffle element 5 front end is cone table shape; The stage casing of baffle element 5 is cylindric and is slightly less than the diameter of the cavity in pressure valve 4, and the outer side surface in the stage casing of baffle element 5 is provided with seal ring 52; The rear end of baffle element 5 is provided with groove 51; The front end of holddown spring 6 is arranged in the groove 51 of the rear end of baffle element 5.
Sidewall beyond the dividing plate 3 of pressure valve 4 is provided with tap hole, tap hole is provided with tap 14, and tap 14 is connected with pipeline 15.
Tap 14 perpendicular to pressure valve 4 medial axis and with pulp-inlet pipe 16 in same plane.
Linked together by adpting flange 20 between pressure valve 4 and pump head body 1.
Seal ring 18 is provided with between pressure valve 4 and pump head body 1.
As shown in Fig. 5 to Fig. 7, described slurry pump holddown spring valve, comprise valve seat 2301 and valve body 2305, it is characterized in that: in valve seat 2301, be provided with endoporus 2307, the sidewall of valve seat 2301 is provided with some liquid ports 2308, and the bottom surface certain altitude of inner side surface from the bottom surface of liquid port 2308 to distance liquid port 2308 of endoporus is the conical surface 2306; Valve body 2305 is inlaid with, the conical surface 2306 of the salable endoporus of valve body 2305 in the endoporus of valve seat 2301; The top of valve body 2301 is provided with holddown spring 2304, and the top of holddown spring 2304 is provided with pressing plate 2302, and the diameter of pressing plate 2302 is not more than the diameter of the endoporus at the top of valve seat 2301, and pressing plate 2302 is fixed on the endoporus of valve seat 2301 by fixing device; When the pressure of the medium flowed into from the endoporus bottom of valve seat 2301 exceedes setting value, medium can break through the stop of valve body 2305 and flow out through the conical surface 2306, liquid port 2305.The described conical surface 2306 is 45 degree with the angle of the bottom surface of valve body 2305.
The top of the endoporus 2307 of valve seat 2301 is provided with annular recess, is inlaid with the stretching ring 2303 of not through annular recess, is fixed on the endoporus of valve seat 2301 by pressing plate 2302 by stretching ring 2303 in annular recess.Be provided with stretching ring, stretching ring can be unloaded at any time, change the fragile part in valve seat.
Stretching ring 2303 is circular in band jagged 2332.
The two ends of stretching ring 2303 are provided with the hole 2331 of stretching ring 2303 for convenience detach.The hole 2331 of stretching ring 2303 is inlaid with cylindrical bump 2333.
The anti-friction valve 2354 that valve body 2305 comprises valve body pedestal 2351 and is movably connected on valve body pedestal 2351.Anti-friction valve adopts wear-resistant material to make, and as alloy low carbon steel, good toughness, self-lubricating property is good.After case-carbonizing, its metal surface is organized and is obviously improved, and substantially increases its wear resistance and corrosion resistance, makes its life-span be that the twice of like product is many, is applicable to severe working environment.Therefore, shock resistance, wear-resistant, anticorrosive, intensity is high, long service life.
The top of valve body pedestal 2351 is provided with cylindrical grooves 2353, and the outer side wall of holddown spring 2304 bottom contacts with the madial wall of cylindrical grooves 2353; The bottom of valve body pedestal 2351 is provided with cylindrical grooves 2352, cylindrical grooves 2352 is provided with screw thread, the shape on the top of anti-friction valve 2354 and the shape of cylindrical grooves 2352 adapt and its outer side wall are also provided with screw thread, and anti-friction valve 2354 passes through the thread set on its top in cylindrical grooves 2352.Because the material of anti-friction valve involves great expense, therefore valve body is divided into the two-part be set in together, to save cost.
The centre of form of pressing plate 2302 bottom surface is provided with cylindrical bump 2321, and cylindrical bump 2321 inserts in the cavity of holddown spring 2304, and the madial wall on holddown spring 2304 top contacts with the outer side wall of cylindrical bump 2321.
Embodiment 2.As shown in Figure 3, Figure 4, unique different of the present embodiment and embodiment 1 are: the centre of form of the rear sidewall 10 of pressure valve 4 is provided with projection 101, and the cross section of projection 101 is regular polygon; The centre of form on the rear sidewall 10 of pressure valve 4 is provided with hole, and be provided with internal thread in hole and be provided with externally threaded screw rod 7, the front end of screw rod 7 is provided with holddown spring base 12, and the rear end of holddown spring 6 is connected with holddown spring base 12;
The setscrew nut 8 that trailing flank position is provided with iron plate 84, cross section is regular polygon of the projection 10 of the rear sidewall 10 of screw rod 7 upward pressure valve 4; Iron plate 84 is provided with projection 82, lower projection 83, when setscrew nut 8 clamps iron plate 84, the lower projection 83 of iron plate 84 is close to a sidewall of setscrew nut 8, and the upper projection 82 of iron plate 84 is close to a sidewall of the projection 101 of the rear sidewall 10 of pressure valve 4.
Embodiment 3, as shown in Figure 8, the present embodiment and unique not the coexisting of embodiment 1 are: the top 2371 of the endoporus of valve seat 2301 is provided with screw thread and is connected with sealing screw 2309 by this threaded screw, is fixed on by pressing plate 2302 on the top 2371 of the endoporus of valve seat 2301 by sealing screw 2309.In sealing screw 2309, Vertical dimension is provided with hole 2391.The described conical surface 2306 is 60 degree with the angle of the bottom surface of valve body 2305.Pressing plate can be fixed on the endoporus of valve seat by sealing screw.Also be screwed into degree, the tightness of fine setting holddown spring, thus the size of adjust flux by what regulate sealing screw.Install pressing plate time, instrument can be goed deep into described hole and push down pressing plate, install, dismounting pressing plate more convenient.
Embodiment 4.Unique different of the present embodiment and embodiment 3 are: the described conical surface 6 is 50 degree with the angle of the bottom surface of valve body 5.Due to the change at its pressurized inclination angle, become 50 ° than 60 ° of embodiment 2, bear pressure through test and improve 15%, that is, when former designing material is constant, the pressure that bears of the contact sealing surface of product is significantly improved, thus increases the service life more than 25%.
More than show and describe basic principle of the present utility model and major character and advantage of the present utility model.The technician of the industry should understand; the utility model is not restricted to the described embodiments; what describe in above-described embodiment and specification just illustrates principle of the present utility model; under the prerequisite not departing from the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall within the scope of claimed the utility model.The claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (10)
1. a slurry pump self-unloading pump head, comprise pump head body (1), chamber (17) one end of pump head body (1) is provided with stock inlet (22), the other end is provided with grout outlet (21), stock inlet (22) is connected with pulp-inlet pipe (16), it is characterized in that: the chamber (17) of pump head body (1) is connected with pump head internal pressure adjustment device; Slurry pump holddown spring valve (23) is provided with in the chamber (17) of pump head body (1);
Pump head internal pressure adjustment device comprises pressure valve (4); Pressure valve is provided with cavity in (4), is provided with the dividing plate (3) being divided into front cavity (19), rear chamber (13) in cavity, and front cavity (19) is communicated with the chamber (17) of pump head body (1); Rear chamber (13) is connected with pulp-inlet pipe (16) by pipeline (15); Dividing plate (3) is provided with unloading hole (2); Rear chamber (13) internal fixtion of pressure valve (4) has holddown spring (6), and the end of holddown spring (6) is provided with can the baffle element (5) of airtight unloading hole (2); When the pressure medium in pump head body (1) is no more than setting value, baffle element (5) airtight unloading hole (2) under the effect of holddown spring (6), when the pressure medium in pump head body (1) exceedes setting value, medium breaks through the airtight inflow rear chamber (13) of baffle element and flows into pulp-inlet pipe (8) from pipeline (15);
Slurry pump holddown spring valve (23) comprises valve seat (2301) and valve body (2305), endoporus (2307) is provided with in valve seat (2301), the sidewall of valve seat (2301) is provided with some liquid ports (2308), and the bottom surface certain altitude of inner side surface from the bottom surface of liquid port (2308) to distance liquid port (2308) of endoporus is the conical surface (2306); Valve body (2305) is inlaid with, the conical surface (2306) of valve body (2305) salable endoporus in the endoporus of valve seat (2301); The top of valve body (2301) is provided with holddown spring (2304), the top of holddown spring (2304) is provided with pressing plate (2302), the diameter of pressing plate (2302) is not more than the diameter of the endoporus at the top of valve seat (2301), and pressing plate (2302) is fixed on by fixing device on the endoporus of valve seat (2301); When the pressure of the medium flowed into from the endoporus bottom of valve seat (2301) exceedes setting value, medium can break through the stop of valve body (2305) and flow out through the conical surface (2306), liquid port (2305).
2. a kind of slurry pump self-unloading pump head as claimed in claim 1, it is characterized in that: the top of the endoporus (2307) of valve seat (2301) is provided with annular recess, be inlaid with the stretching ring (2303) of not through annular recess in annular recess, by stretching ring (2303), pressing plate (2302) be fixed on the endoporus of valve seat (2301); Stretching ring (2303) is circular in band jagged (2332); The two ends of stretching ring (2303) are provided with the hole (2331) of stretching ring (2303) for convenience detach; The hole (2331) of stretching ring (2303) is inlaid with cylindrical bump (33).
3. a kind of slurry pump self-unloading pump head as claimed in claim 1, it is characterized in that: the top (2371) of the endoporus of valve seat (2301) is provided with screw thread and is connected with sealing screw (2309) by this threaded screw, by sealing screw (2309), pressing plate (2302) is fixed on the top (2371) of the endoporus of valve seat (2301); Sealing screw (2309) interior Vertical dimension is provided with hole (2391); Valve body (2305) comprises valve body pedestal (2351) and is movably connected in the anti-friction valve (2354) on valve body pedestal (2351); The top of valve body pedestal (2351) is provided with cylindrical grooves (2353), and the outer side wall of holddown spring (2304) bottom contacts with the madial wall of cylindrical grooves (2353); The bottom of valve body pedestal (2351) is provided with cylindrical grooves (2352), cylindrical grooves (2352) is provided with screw thread, the shape on the top of anti-friction valve (2354) and the shape of cylindrical grooves (2352) adapt and its outer side wall are also provided with screw thread, anti-friction valve (2354) by the thread set on its top in cylindrical grooves (2352).
4. a kind of slurry pump self-unloading pump head as claimed in claim 1, it is characterized in that: the centre of form of pressing plate (2302) bottom surface is provided with cylindrical bump (2321), cylindrical bump (2321) inserts in the cavity of holddown spring (2304), and the madial wall on holddown spring (2304) top contacts with the outer side wall of cylindrical bump (2321).
5. a kind of slurry pump self-unloading pump head as claimed in claim 1, it is characterized in that: the centre of form of the rear sidewall (10) of pressure valve (4) is provided with hole, be provided with internal thread in hole and be provided with externally threaded screw rod (7), the front end of screw rod (7) is provided with holddown spring base (12), and the rear end of holddown spring (6) is connected with holddown spring base (12); The trailing flank of the rear sidewall (10) of pressure valve (4) is provided with some projections (81);
Screw rod (7) tightens the setscrew nut (8) that trailing flank position is provided with iron plate (84), cross section is regular polygon of the rear sidewall (10) pasting pressure valve (4); Iron plate (84) is provided with projection (82), lower projection (83), when setscrew nut (8) clamping iron plate (84), the lower projection (83) of iron plate (84) is close to a sidewall of setscrew nut (8), and the upper projection (82) of iron plate (84) is close to a sidewall of the projection (81) on the trailing flank of the rear sidewall (10) of pressure valve (4).
6. a kind of slurry pump self-unloading pump head as claimed in claim 1, it is characterized in that: the centre of form of the rear sidewall (10) of pressure valve (4) is provided with projection (101), the cross section of projection (101) is regular polygon; The centre of form on the rear sidewall (10) of pressure valve (4) is provided with hole, be provided with internal thread in hole and be provided with externally threaded screw rod (7), the front end of screw rod (7) is provided with holddown spring base (12), and the rear end of holddown spring (6) is connected with holddown spring base (12);
The setscrew nut (8) that trailing flank position is provided with iron plate (84), cross section is regular polygon of the projection (10) of the rear sidewall (10) of screw rod (7) upward pressure valve (4); Iron plate (84) is provided with projection (82), lower projection (83), when setscrew nut (8) clamping iron plate (84), the lower projection (83) of iron plate (84) is close to a sidewall of setscrew nut (8), and the upper projection (82) of iron plate (84) is close to a sidewall of the projection (101) of the rear sidewall (10) of pressure valve (4).
7. a kind of slurry pump self-unloading pump head as described in a claim as any in claim 5 to 6, is characterized in that: the trailing flank of the head (9) of screw rod (7) is provided with square groove (91); The outer side surface of the rear sidewall (10) of described pressure valve (4) is provided with dust-proof cover (11).
8. a kind of slurry pump self-unloading pump head as claimed in claim 7, is characterized in that: the cavity in pressure valve (4) is cylindric; Baffle element (5) front end is cone table shape; The stage casing of baffle element (5) is cylindric and is slightly less than the diameter of the cavity in pressure valve (4), and the outer side surface in the stage casing of baffle element (5) is provided with seal ring (52); The rear end of baffle element (5) is provided with groove (51); The front end of holddown spring (6) is arranged in the groove (51) of the rear end of baffle element (5).
9. a kind of slurry pump self-unloading pump head as claimed in claim 7, is characterized in that: the sidewall beyond the dividing plate (3) of pressure valve (4) is provided with tap hole, tap hole is provided with tap (14), and tap (14) is connected with pipeline (15); Tap (14) perpendicular to pressure valve (4) medial axis and with pulp-inlet pipe (16) in same plane.
10. a kind of slurry pump self-unloading pump head as claimed in claim 7, is characterized in that: linked together by adpting flange (20) between pressure valve (4) and pump head body (1); Seal ring (18) is provided with between pressure valve (4) and pump head body (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420471162.9U CN204113620U (en) | 2014-08-21 | 2014-08-21 | A kind of slurry pump self-unloading pump head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420471162.9U CN204113620U (en) | 2014-08-21 | 2014-08-21 | A kind of slurry pump self-unloading pump head |
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| CN204113620U true CN204113620U (en) | 2015-01-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420471162.9U Withdrawn - After Issue CN204113620U (en) | 2014-08-21 | 2014-08-21 | A kind of slurry pump self-unloading pump head |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104196709A (en) * | 2014-08-21 | 2014-12-10 | 山东中探机械有限公司 | Self-unloading pump head of slurry pump |
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2014
- 2014-08-21 CN CN201420471162.9U patent/CN204113620U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104196709A (en) * | 2014-08-21 | 2014-12-10 | 山东中探机械有限公司 | Self-unloading pump head of slurry pump |
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| C14 | Grant of patent or utility model | ||
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| AV01 | Patent right actively abandoned |
Granted publication date: 20150121 Effective date of abandoning: 20160824 |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20150121 Effective date of abandoning: 20160824 |
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| C25 | Abandonment of patent right or utility model to avoid double patenting |