Pump sealing structure

Abstract

The utility model discloses a pump sealing structure, and belongs to the technical field of material pumps. A pump sealing structure comprises a pump shaft and a coupling sleeve, the pump shaft comprises a front shaft and a tail shaft, the front shaft and the tail shaft are connected through a bolt, screws are arranged on the two sides of one end of the coupling sleeve and connected with the coupling sleeve through clamping grooves, and an inner mechanical seal is arranged at one end of the tail shaft. In order to solve the problems that an existing material pump mechanical seal adopts a single-machine seal, is not provided with a water cooling device, is easy to leak materials and is not durable, and the single-machine seal is not provided with water cooling, so that the mechanical seal is easy to damage due to dry grinding or rapid temperature change, the discharge of material liquid is influenced, and leaked material liquid is easy to breed microorganisms, cooling water is introduced between the water seal and the material seal; the cooling water has the effects of cooling, lubricating and preventing dry grinding, the mechanical seal cannot be excessively abraded even if the pump idles, the service life of the mechanical seal is prolonged, and the maintenance cost is saved.

Description

TECHNICAL FIELD

[0001] The utility model relates to material pump technical field, concretely is a pump sealing structure. BACKGROUND

[0002] The present material pump mechanical seal adopts single machine seal, does not have water cooling device, is easy to leak material, is not durable, and single machine seal does not have water cooling, and dry grinding or temperature rapid change is easy to make mechanical seal damage, influences material liquid out to form, and the leaked material liquid is easy to breed microorganism. INNOVATION CONTENT

[0003] The utility model discloses a pump sealing structure, and cooling water is passed between water seal and material seal, cooling water plays a cooling, lubrication, dry grinding prevention effect, even if pump idling also can not cause machine seal excessive wear, prolongs the service life of mechanical seal, saves repair cost, and can solve the problems in the prior art.

[0004] To realize above-mentioned purpose, the utility model provides following technical scheme: a pump sealing structure, including pump shaft and coupling sleeve, the pump shaft includes front axle and tail shaft, and the front axle is connected with the tail shaft through bolt, and both sides of one end of the coupling sleeve are provided with screw rod, and the screw rod is connected with the coupling sleeve through the clamping groove, and one end of the tail shaft is provided with inner machine seal, and the tail shaft is rotatably connected with the inner machine seal, and the outer side of the inner machine seal is provided with water cooling machine seal, and the water cooling machine seal is attached with the inner machine seal.

[0005] Further, the upper portion of the water cooling machine seal is provided with cooling water outlet, and the lower portion of the water cooling machine seal is provided with cooling water inlet, wherein the cooling water outlet and the cooling water inlet are provided as an integral structure with the water cooling machine seal.

[0006] Further, the inside of the water cooling machine seal is provided with ring water cavity, and the cooling water outlet and the cooling water inlet are mutually penetrated with the ring water cavity, and the cooling water outlet and the cooling water inlet are extended to the outside of the coupling sleeve through the slot.

[0007] Further, the both sides of the surface of the water cooling machine seal are provided with flow knob, and the flow knob is rotatably connected with the water cooling machine seal.

[0008] Further, the inside of the water cooling machine seal is provided with torsion shaft, and the torsion shaft is provided as an integral structure with the flow knob.

[0009] Further, the both sides of the torsion shaft are provided with integrally formed valve sheet, and the valve sheet is attached with the ring water cavity.

[0010] Compared with the prior art, the utility model has the beneficial effects that:

[0011] 1. The utility model discloses a double machine seal is changed to the single machine seal of existing increase cooling water cavity, one side installation water seal in cavity, one side installation material seal, install drive ring at the middle pump shaft, drive dynamic ring seal, a set is material seal, a set is water seal, and water seal and material seal between pass cooling water, and cooling water plays a cooling, lubrication, dry grinding prevention effect, even if pump idling also can not cause machine seal excessive wear, prolong the service life of mechanical seal, save repair cost.

[0012] 2. The utility model discloses the ring water cavity of water cooling machine seal inside is annular circulation structure, and the torsional shaft with valve piece is installed on the left and right sides of ring water cavity respectively, the torsional shaft can be rotated and is regulated and controlled through the flow knob of outside, when the flow knob is rotated clockwise, cooling water will flow from the outside of ring water cavity, contrary when the flow knob is rotated counterclockwise, cooling water will flow from the inside of ring water cavity, thereby promote the cooling efficiency of one side of inner machine seal, and when the valve piece is adjusted to the horizontal state, the cooling water flow of cavity inside will be blocked and thus slow down, to reach the purpose of flow regulation. DRAWINGS

[0013] Figure 1 It is the overall front view of the utility model;

[0014] Figure 2 It is the overall side view of the utility model;

[0015] Figure 3 It is the water cooling machine seal structure schematic view of the utility model;

[0016] Figure 4 It is the ring water cavity structure schematic view of the utility model.

[0017] In the drawing: 1, shaft sleeve;2, pump shaft;3, water cooling machine seal;101, screw rod;102, slot;103, inner machine seal;201, front axle;202, tail shaft;301, cooling water outlet;302, cooling water inlet;303, flow knob;304, ring water cavity;3031, torsional shaft;3032, valve piece. DETAILED DESCRIPTION

[0018] The technical scheme in the embodiments of the utility model will be described clearly and completely below in combination with the drawings in the embodiments of the utility model, and obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor are within the protection scope of the utility model.

[0019] In order to solve the existing material pump mechanical seal adopts single machine seal, no water cooling device, easy to leak material, not durable, and single machine seal without water cooling, dry grinding or temperature rapid change easy to damage mechanical seal, affect the material liquid out of the problem; please refer to Figures 1-4 The utility model provides the following schemes:

[0020] A pump sealing structure, comprising a pump shaft 2 and a shaft sleeve 1, the pump shaft 2 comprises a front shaft 201 and a tail shaft 202, the front shaft 201 is connected with the tail shaft 202 by bolts, both sides of one end of the shaft sleeve 1 are provided with screw rods 101, the screw rod 101 is connected with the shaft sleeve 1 by a clamping groove, one end of the tail shaft 202 is provided with an inner mechanical seal 103, the tail shaft 202 is rotatably connected with the inner mechanical seal 103, the outer side of the inner mechanical seal 103 is provided with a water-cooled mechanical seal 3, and the water-cooled mechanical seal 3 is attached to the inner mechanical seal 103.

[0021] The existing single machine seal is changed into double machine seals, namely the inner mechanical seal 103 and the water-cooled mechanical seal 3 on the outer side, a ring water cavity 304 is increased, a driving ring is installed at the middle pump shaft 2 to drive a dynamic ring seal, one set is a material seal, and the other set is a water seal, cooling water is circulated between the inner mechanical seal 103 and the water-cooled mechanical seal 3, the cooling water plays a role of cooling, lubrication and dry grinding prevention, even if the pump is idling, the mechanical seal will not be excessively worn, the service life of the mechanical seal is prolonged, and maintenance cost is saved.

[0022] The upper side of the water-cooled mechanical seal 3 is provided with a cooling water outlet 301, and the lower side of the water-cooled mechanical seal 3 is provided with a cooling water inlet 302, wherein the cooling water outlet 301 and the cooling water inlet 302 are integrally arranged with the water-cooled mechanical seal 3, the inside of the water-cooled mechanical seal 3 is provided with a ring water cavity 304, the cooling water outlet 301 and the cooling water inlet 302 are in communication with the ring water cavity 304, the cooling water outlet 301 and the cooling water inlet 302 extend to the outside of the shaft sleeve 1 through a slot 102, both sides of the surface of the water-cooled mechanical seal 3 are provided with flow knobs 303, the flow knobs 303 are rotatably connected with the water-cooled mechanical seal 3, the inside of the water-cooled mechanical seal 3 is provided with a torsion shaft 3031, the torsion shaft 3031 is integrally arranged with the flow knobs 303, both sides of the torsion shaft 3031 are provided with integrally formed valve plates 3032, and the valve plates 3032 are attached to the ring water cavity 304.

[0023] The ring water cavity 304 inside the water cooling machine seal 3 is a ring-shaped flow-through structure, and a torsion shaft 3031 with a valve plate 3032 is installed on the left and right sides of the ring water cavity 304, the torsion shaft 3031 can be rotated and controlled through the flow knob 303 on the outside, when the flow knob 303 is rotated clockwise, the cooling water will flow from the outside of the ring water cavity 304, and vice versa, when the flow knob 303 is rotated counterclockwise, the cooling water will flow from the inside of the ring water cavity 304, thereby improving the cooling efficiency of one side of the inner machine seal 103, and when the valve plate 3032 is adjusted to a horizontal state, the cooling water flow inside the cavity will be blocked and slowed down, thereby achieving the purpose of flow control.

[0024] Working principle, the middle pump shaft 2 is provided with a driving ring, which drives the dynamic ring seal, one set is a material seal, and the other set is a water seal, cooling water is circulated between the inner machine seal 103 and the water cooling machine seal 3, the ring water cavity 304 inside the water cooling machine seal 3 is a ring-shaped flow-through structure, and a torsion shaft 3031 with a valve plate 3032 is installed on the left and right sides of the ring water cavity 304, the torsion shaft 3031 can be rotated and controlled through the flow knob 303 on the outside, when the flow knob 303 is rotated clockwise, the cooling water will flow from the outside of the ring water cavity 304, and vice versa, when the flow knob 303 is rotated counterclockwise, the cooling water will flow from the inside of the ring water cavity 304, thereby improving the cooling efficiency of one side of the inner machine seal 103, and when the valve plate 3032 is adjusted to a horizontal state, the cooling water flow inside the cavity will be blocked and slowed down, thereby achieving the purpose of flow control.

[0025] It should be noted that, in the present text, relational terms such as first and second and the like can only be used to distinguish one entity or operation from another entity or operation, without necessarily requiring or implying any such actual relationship or order between these entities or operations. Moreover, the terms "comprises", "comprising", or any other variant thereof are intended to cover non-exclusive inclusions, so that a process, method, article, or apparatus that includes a list of elements not only includes those elements, but also includes other elements not explicitly listed, or inherent to such a process, method, article, or apparatus.

[0026] Although the embodiments of the present application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made thereto without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A pump seal structure, characterized by, Including pump shaft (2) and shaft sleeve (1), the pump shaft (2) includes front shaft (201) and tail shaft (202), the front shaft (201) is connected with the tail shaft (202) by bolt, both sides of the one end of the shaft sleeve (1) are provided with screw rod (101), the screw rod (101) is connected with the shaft sleeve (1) through the clamping groove, the tail shaft (202) is provided with inner machine seal (103) on one end, the tail shaft (202) is rotatably connected with the inner machine seal (103), the outer side of the inner machine seal (103) is provided with water-cooled machine seal (3), and the water-cooled machine seal (3) is attached to the inner machine seal (103).

2. A pump seal structure according to claim 1, wherein: The upper portion of the water-cooled machine seal (3) is provided with a cooling water outlet (301), and the lower portion of the water-cooled machine seal (3) is provided with a cooling water inlet (302), wherein the cooling water outlet (301) and the cooling water inlet (302) are integrally formed with the water-cooled machine seal (3).

3. A pump seal structure according to claim 2, wherein: The inside of the water-cooled machine seal (3) is provided with a ring water cavity (304), and the cooling water outlet (301) and the cooling water inlet (302) are mutually penetrated with the ring water cavity (304), and the cooling water outlet (301) and the cooling water inlet (302) are extended to the outside of the shaft sleeve (1) through the slot (102).

4. A pump seal structure according to claim 3, wherein: Both sides of the surface of the water-cooled machine seal (3) are provided with flow knobs (303), and the flow knobs (303) are rotatably connected with the water-cooled machine seal (3).

5. A pump seal structure according to claim 4, wherein: The inside of the water-cooled machine seal (3) is provided with a torsion shaft (3031), and the torsion shaft (3031) is integrally formed with the flow knob (303).

6. A pump seal structure according to claim 5, wherein: Both sides of the torsion shaft (3031) are provided with integrally formed valve sheets (3032), and the valve sheets (3032) are attached to the ring water cavity (304).

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