CN202301007U - Gear pump - Google Patents

Abstract

The utility model discloses a gear pump, which solves the problems of great material using amount and poor radiation effects in the manufacture of an end cover of the conventional gear pump. The technical scheme is that: the gear pump comprises a shell, a driving gear and a driven gear, wherein the driving gear and the driven gear are arranged in the shell, and are meshed with each other; the driving gear is sleeved on a driving shaft; the driving shaft is extended to the outside of one end of the shell; and the end cover is fixed at the other end of the shell. The gear pump is characterized in that: a plurality of convex bodies are arranged on the surface of the end cover, integrated with the end cover and raised outside the outer surface of the end cover.

Description

Gear pump

Technical field

The utility model relates to a kind of gear pump that is used to promote fluid pressure, relates in particular to the end cap on this gear pump.

Background technique

Gear pump is to utilize the rotation of pitch wheel to promote the pressure of hydraulic oil, flows in pipeline to drive hydraulic oil.Chinese invention patent (the patent No.: disclose a kind of high-pressure gear pump that does not have fixed lateral plate 201110100430.7), related to hydraulic machinery.Described high-pressure gear pump is not provided with fixed lateral plate, and the interior edge face of described floating side plate directly contacts with the pump housing, pump cover.Remove fixed lateral plate; The straightness error that produces when reducing the manufacturing of fixed lateral plate and floating side plate improves the sealing effect of W type seal ring, and reduction is because of the influence of fixed lateral plate straightness error to sealing effect; Reduce the face leakage between fixed lateral plate and the pump housing end face; Help improving the volumetric efficiency of gear pump, prolong the working life of gear pump, satisfy of the requirement of all kinds of engineering machinery high-pressure gear pump.Reduce part, remove fixed lateral plate, reduce cost, simplify installation procedure, improve work efficiency.

Pitch wheel is assemblied in the housing in this gear pump, is fixed with end cap in the open end side of housing, and the outer surface of this end cap is the plane.Gear pump is after work a period of time, and the temperature of hydraulic oil has rising to a certain degree, and the pressure of hydraulic oil itself is higher, and this just requires housing itself need have certain intensity.Outer surface is that the end cap on plane has certain defective, on the one hand its inconvenience heat radiation; On the other hand, reach certain intensity, its thickness size is relatively large, and this makes that the materials amount when end cap is made is big.

Summary of the invention

For overcoming above-mentioned defective, the utility model technical issues that need to address are: a kind of gear pump is provided, the good heat dissipation effect of this gear pump case.

The utility model solve the technical problem the technological scheme of being taked: a kind of gear pump; Comprise housing be located in the housing, intermeshing driving gear and driven gear; Driving gear is socketed on the driving shaft, and driving shaft reaches the outside of housing one end, is fixed with end cap at the other end place of housing; It is characterized in that the surface of said end cap is provided with some be connected as a single entity with it, convex bodys of being projected into the end cap outer surface outside.These convex bodys and end cap are by homogeneous material one moulding by casting, and these convex bodys are molded on the outer surface of end cap, are the equal of the radiating fin that is arranged on the end cap.

As preferably, described convex body is linked to be as a whole.All convex bodys are linked to be as a whole, are equivalent on end cap, be provided with stiffening rib, and this can effectively improve the intensity of end cap, thus the materials amount can save end cap and make the time.

As preferably, said convex body inside is formed with some dark caves, and the bottom surface in dark cave is the outer surface of end cap.These dark caves have increased the heat diffusion area of end cap, help improving the radiating effect of end cap.

As preferably, the shape of said dark cave cross section has two kinds at least.The shape of dark cave cross section has multiple, can on end cap, form some comparatively patterns of compactness according to the mounting point of the true form of end cap and fixing bolt, helps the attractive in appearance of end cap.

The beneficial effect of the utility model is: the outer surface of end cap is provided with some outstanding convex bodys, can effectively increase the external surface area of end cap, has improved the radiating effect of end cap, helps the raising of gear pump working stability.Through holding together these convex bodys, can effectively increase the intensity of end cap, the materials amount in the time of can saving the end cap making also can adapt to the oily seal request of high-pressure and hydraulic simultaneously.

Description of drawings

Fig. 1 is the longitudinal sectional view of the utility model gear pump.

Fig. 2 is the structural representation of the utility model gear pump end caps.

Fig. 3 is the perspective view of the utility model gear pump.

Embodiment

The utility model gear pump structure comprises housing 1 and the driving gear 9 and driven gear 4 be located in the housing 1; Driving gear 9 circumferentially is socketed on the driving shaft 2 regularly; Driven gear 4 circumferentially is socketed on the driven shaft 3 regularly, and driving gear 9 is meshing with each other in housing 1 with driven gear 4.Driving shaft 2 reaches the outside of housing 1 one ends, is used to accept the transmission of power.

For ease of the assembling of gear pump, the other end of housing 1 is the opening shape, so that in housing 1, assemble driving gear 9 and driven gear 4 from housing 1 opening.At the opening of housing 1, promptly the other end place of housing 1 is provided with end cap 6, and end cap 6 is fixing through fixing bolt 5 realizations and housing 1.

The outer surface of end cap 6 is provided with the some convex bodys 7 that are connected as a single entity with it, and these convex bodys 7 are projected into the outside of end cap 6 outer surfaces.These convex bodys 7 are linked to be as a whole, thereby are formed with some dark caves 8 in the inside of these convex bodys 7, and the outer surface of end cap 6 is as the bottom surface in these dark caves 8.

The cross section in dark cave 8 has multiple shape, and they have circle, cotton shape and other special-shaped shape, and this is to design according to the shape of end cap 6 itself and the rigging position of fixing bolt 5.

Claims (4)

1. gear pump; Comprise housing (1) and be located in the housing (1), intermeshing driving gear (9) and driven gear (4); Driving gear (9) is socketed on the driving shaft (2), and driving shaft (2) reaches the outside of housing (1) one end, is fixed with end cap (6) at the other end place of housing (1); It is characterized in that the surface of said end cap (6) is provided with some be connected as a single entity with it, convex bodys (7) of being projected into end cap (6) the outer surface outside.

2. gear pump according to claim 1 is characterized in that, described convex body (7) is linked to be as a whole.

3. gear pump according to claim 2 is characterized in that, said convex body (7) inside is formed with some dark caves (8), and the bottom surface in dark cave (8) is the outer surface of end cap (6).

4. gear pump according to claim 3 is characterized in that, the shape of said dark cave (8) cross section has two kinds at least.

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