CN2202196Y - High-speed electric double-cylinder pressure testing pump - Google Patents

Abstract

The utility model relates to a high-speed electric double-cylinder pressure testing pump, comprising an electric motor, a large belt pulley, a middle belt pulley, a small belt pulley, a rolling bearing, an input disk, an eccentric main shaft, a rolling needle bearing, a slide block, a plunger piston, a sealing element, a pressure water cylinder, a pedestal car, etc. The inner hole of the large belt pulley is provided with the rolling bearing, and the inner hole of the bearing is installed on a supporting seat which is fixed tightly to a casing. The input disk is connected with the big belt pulley by screws, and the inner hole of the input disk is installed on the eccentric spindle by keys. An eccentric post is provided with the slide block with the rolling needle bearing, and the sealing element of the plunger piston adopts a beryllium bronze long guide sleeve or a nylon rubber sealing ring to be respectively combined and sealed with TFA model carbon fiber sealing fillings. The high-speed electric double-cylinder pressure testing pump has the advantages of simple structure, low cost, large flow amount, small power and high work efficiency, and the pump efficiency can reach 70%. The high-speed electric double-cylinder pressure testing pump can save energy.

Description

High-speed electric double-cylinder pressure testing pump

The utility model be applicable to the product of high-pressure bottle and mechanical device or in addition part make hydraulic pressure, oil pressure sealing intensity and rubber tube, do the test of aspects such as explosion and use.

In the prior art, as the our factory patent No. 88212212.6 flywheel planetary gear speed-reduction twin-tub motor test pump and 90219767.3 variable-speed bearing transmission twin-tub motor test pumps, all adopt speed reducer to carry out transmission, though the pump housing is light, structure is simpler, but noise is big, cost is high, flow is little, the working efficiency of pump can only be below 60%, and pump speed is below 118 times/minute.

The purpose of the present utility model is: design a kind of by v belt secondary slow down, volume is little, flow is big, cost is low, pump speed about 700 times/minute, energy-conservation again hydraulic test pump.

The utility model is made up of motor, large and small belt pulley, rolling bearing, input disc eccentric main axis, needle bearing, slide block, crosshead, plunger, Sealing, setting-out cylinder, water-collecting machine, water inlet assembly, base car (14) part.Two rolling bearings are housed in the breast wheel hub bore of big belt pulley, and the rolling bearing endoporus is contained on the fastening bearing of casing; The garden week of input disc is fastened on the side wheel hub of big belt pulley with 4 screws of 2 pins, and the endoporus of input disc is contained on the eccentric main axis with key; On the biasing post of eccentric main axis, the slide block of needle bearing is housed in the hole slot in being set with; Sealing be when plunger be φ 25mm when following, with the combination seal of long guide pin bushing of beryllium bronze and TFA type CFM, when plunger is that φ 25mm is when above, with the combination seal of yxd nylon rubber seal ring and TFA type CFM.

The utility model compared with prior art its advantage is: simple in structure, cost is low, volume is little, flow is big, the efficient of pump can reach 70%, improved " three change " degree, the little but high working efficiency of the power of employing, but energy saving.

Below in conjunction with description of drawings embodiment:

Fig. 1 is the plan view of twin-tub high speed electric hydraulic test pump;

Fig. 2 is the side view of twin-tub high speed electric hydraulic test pump;

Fig. 3 is the drive part structural drawing of twin-tub high speed electric hydraulic test pump;

Fig. 4 is the biasing post and the slide block erection drawing of twin-tub high speed electric hydraulic test pump;

Fig. 5 is the hydraulic part structural drawing of twin-tub high speed electric hydraulic test pump.

Hydraulic test pump of the present utility model is seen Fig. 1,2,3,4,5, drive big belt pulley (2) rotation by the small belt pulley (3) that is contained on the motor (1) by belt, because of being connected with 4 screws of 2 pins (16) five equilibrium in garden week of input disc (4) with big belt pulley (2) inner wheel hub one side, its endoporus is contained on the eccentric main axis (5) with key, so when big belt pulley (2) rotates, also driven eccentric main axis (5) rotation, two rolling bearings (15) are housed in the breast wheel hub bore of big belt pulley (2), the internal diameter of rolling bearing (15) is contained on the fastening bearing (18) of casing (17), bearing (18) has born whole loads that belt imports into like this, make big belt pulley (2) drive eccentric main axis (5) rotation in high-speed smooth ground, big belt pulley (2) can play inertia again can.The back end nut (19) of eccentric main axis (5), can adjust the gap of rolling bearing (15), outside framework oil seal (20) can prevent the leaking outside of oil of tank lubrication, the other end of eccentric main axis (5) is a biasing post, the slide block (7) of needle bearing (6) is housed in the hole slot in being set with on biasing post, this can reduce the wearing and tearing and the friction of slide block (7), and slide block (7) adopts alloy material (the most handy 40Cr) and heat-treats.Biasing post drives slide block (7) motion, and slide block (7) is contained in the groove of crosshead (8), and drives that it is reciprocating.Crosshead (8) adopts spheroidal graphite cast iron, be fixed with two plungers (9) in the both sides of crosshead (8), thereby plunger (9) is also reciprocating, can be according to plunger (9) and the setting-out cylinder (11) that is complementary with it and the Sealing (10) of different pressure and flow selection different-diameter, when plunger (9) when φ 25mm is following, adopt the long guide pin bushing of beryllium bronze to add the Sealing (10) that TFA type CFM combines, when plunger (9) when φ 25mm is above, adopt YXD nylon rubber seal ring to add the Sealing (10) that TFA type CFM combines, because TFA type CFM has the effect of selflubricating, can make plunger (9) when high-speed motion, can improve the performance and the life-span of Sealing (10), during plunger (9) to-and-fro motion, liquid is by water inlet assembly (13) and suction joint (21), enter water valve (22), enter again and be pressed into cylinder (11), again by outlet valve (23), water-collecting machine (12), pressure maintaining valve (24) and water outlet contact (25) enter and carry out pressure testing in the pressure-vessel, pressure can be read on pressure gauge (26), when pressure surpasses requisite number, liquid overflows from safety pressure regulator valve (27), dismantle pressure release valve (28) step-down after pressure testing is intact, when connecting high pressure hose and spray gun accessories on water output connector (25), hydraulic test pump can be made jetting machine and use.The working pressure of this pump is 2.5～130mpa, and flow is 200～300 OL/H, and power of motor is 1.5～7.5KW.

Claims (4)

1, a kind of twin-tub high speed electric hydraulic test pump is made up of motor (1), big belt pulley (2), small belt pulley (3), input disc (4), eccentric main axis (5), rolling bearing (15), rolling bearing (6), slide block (7), crosshead (8), plunger (9), Sealing (10), setting-out cylinder (11), water-collecting machine (12), water inlet assembly (13), base car parts such as (14).It is characterized in that: in the middle wheelboss inner hole of big belt pulley (2), two rolling bearings (15) are housed, rolling bearing (15) endoporus is installed on the fastening bearing (18) of casing (17), the garden week of input disc (4) is connected on the side wheel hub of big belt pulley (2) with pin and screw (16), and its endoporus is contained on the eccentric main axis (5) with key.

2, hydraulic test pump according to claim 1 is characterized in that: on the biasing post of eccentric main axis (5), the slide block (7) of needle bearing (6) is housed in the hole slot in being set with.

3, hydraulic test pump according to claim 1 is characterized in that: Sealing (10) is φ 25mm when following, with the combination seal of long guide pin bushing of beryllium bronze and CFM at plunger (9).

4, hydraulic test pump according to claim 1 is characterized in that: Sealing (10) is φ 25mm when above at plunger (9), fills out the combination seal of envelope with nylon rubber seal ring and carbon fiber.

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