Cam type rotor pump with double-end-face mechanical seal

Abstract

The utility model discloses a cam type rotor pump with double mechanical seals, which comprises a pump body and a box body, the pump body is connected with the box body through a partition plate, a mechanical seal shell is arranged in the pump body, and a front mechanical seal and a rear mechanical seal are arranged in the mechanical seal shell. The mechanical sealing shell is further provided with a first flushing opening. A second flushing opening is formed in the side wall of the partition plate, and the position of the second flushing opening corresponds to the position of the first flushing opening. And drain outlets are symmetrically formed in the bottom of the partition plate. A first positioning cover is arranged between the partition plate and the box body; and a second positioning cover is arranged between the pump body and the partition plate. The extended mechanical sealing shell is arranged, and two mechanical seals are arranged in the extended mechanical sealing shell, so that the mechanical sealing performance of the pump body is guaranteed; and a partition plate and two positioning covers are arranged, so that the stability of the whole structure is guaranteed, and meanwhile, the possibility of leakage of the lubricating medium is reduced. Compared with the prior art, sealing is more reliable, maintenance times are few, maintenance is convenient, and using cost is low.

Description

Technical Field

[0001] The utility model relates to the technical field of cam type rotor pumps, in particular to a cam type rotor pump with reliable sealing performance and double-end surface mechanical seals. Background Art

[0002] like Figure 1 As shown in the figure, the conventional cam rotor pump is mainly composed of pump body, front cover, rotor, shaft, housing, synchronous gear, bearing gland, right positioning cover, mechanical seal, bearing and other parts. It has the following main disadvantages:

[0003] Due to structural limitations, the mechanical seals currently used in cam rotor pumps are all single-end mechanical seals. If the seal leaks, it is directly disassembled and discharged to the outside.

[0004] It is difficult to flush the mechanical seal of an existing cam rotor pump without disassembly, and the flushing matter is not easy to discharge. Utility Model Content

[0005] The purpose of the utility model is to provide a cam rotor pump with double-end mechanical seals to solve the problem of environmental pollution that may occur when leaking.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solution: a cam-type rotor pump with a double-end mechanical seal, comprising a pump body and a casing, a front cover being installed at the front end of the pump body, a bearing being installed in the casing, and the rear end of the casing being fixed by a pressure cover, a driving shaft and a driven shaft being matched by gears being provided in the pump body and the casing, rotors being provided on the driving shaft and the driven shaft, and the pump body and the casing being connected by a partition.

[0007] Preferably, a mechanical seal housing is provided in the pump body, a front end mechanical seal and a rear end mechanical seal are provided in the mechanical seal housing, and a first flushing port is also provided on the mechanical seal housing.

[0008] Preferably, a second flushing port is provided on the side wall of the partition, and the position of the second flushing port corresponds to that of the first flushing port.

[0009] Preferably, sewage outlets are symmetrically provided at the bottom of the partition.

[0010] Preferably, a first positioning cover is provided between the partition and the box body; and a second positioning cover is provided between the pump body and the partition.

[0011] Compared with the prior art, the beneficial effects of the present invention are:

[0012] The extended mechanical seal housing, with two mechanical seals within it, ensures the pump's mechanical seal. Furthermore, the inclusion of a partition and two positioning caps ensures overall structural stability while minimizing the possibility of lubricant leakage. Compared to previous products, this product offers a more reliable seal, requires less maintenance, is easier to maintain, and offers lower operating costs, ensuring safe production for users.

[0013] The mechanical seal can be cleaned by providing flushing ports at two locations, one on the partition and the other on the mechanical seal housing. A drain port is also provided to prevent the accumulation of leaked media from entering the bearings in the housing, which could lead to poor lubrication and damage to the bearings. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a cross-sectional view of a pump body in the prior art.

[0015] Figure 2 This is a cross-sectional view of a cam rotor pump with double-end mechanical seals according to the present invention.

[0016] Figure 3 It is a side view of the partition of the present utility model.

[0017] Figure 4 This is a cross-sectional view of the pump body of the present utility model.

[0018] 1. Pump body; 2. Box body; 3. First positioning cover; 4. Second positioning cover; 5. Mechanical seal housing; 6. Front mechanical seal; 7. Rear mechanical seal; 8. First flush port; 9. Partition; 10. Second flush port; 11. Sewage outlet. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0020] See also Figure 2-4 The present utility model provides a technical solution: a cam-type rotor pump with a double-end mechanical seal, comprising a pump body 1 and a housing 2. A front cover is mounted at the front end of the pump body 1, a bearing is mounted within the housing 2, and the front cover is connected to the bearing via a single mechanical seal. The rear end of the housing 2 is secured by a gland. The pump body 1 and housing 2 are provided with a driving shaft and a driven shaft coupled by synchronous gears. The driving shaft and the driven shaft are also provided with rotors for driving the liquid. The above features are prior art and will not be elaborated upon here.

[0021] The pump body 1 and casing 2 are connected via a partition 9, achieving double-end sealing. A first positioning cover 3 is provided between the partition 9 and casing 2. A second positioning cover 4 is provided between the pump body 1 and the partition 9. Both the first positioning cover 3 and the second positioning cover 4 are positioned with the inner holes of the pump body 1, casing 2, and partition 3, ensuring a sufficient clearance between the pump body 1 and the rotor. This ensures that all pump parameters are maintained, the pump is highly efficient, and the pump is easy to assemble and highly energy-efficient.

[0022] A mechanical seal housing 5 is provided in the pump body 1. The mechanical seal housing 5 is longer than that of a conventional cam rotor pump and can accommodate a second mechanical seal. A front mechanical seal 6 and a rear mechanical seal 7 are provided in the mechanical seal housing 5. The driving shaft and the driven shaft are respectively installed in the front mechanical seal 6 and the rear mechanical seal 7 on both sides. A first flushing port 8 is also provided on the mechanical seal housing 5.

[0023] The side wall of the partition 9 is provided with a second flushing port 10, and the position of the second flushing port 10 corresponds to the position of the first flushing port 8. The bottom of the partition 9 is symmetrically provided with a drain port 11, and the leaked medium will be discharged along the drain port 11 to avoid entering the bearings in the box body, causing poor lubrication of the bearings and easy damage.

[0024] There are two pairs of second flushing ports 10 and first flushing ports 8 . The two pairs of first flushing ports 8 are respectively arranged at the mechanical seal housing 5 that cooperates with the driving shaft and the driven shaft, and are opened on both sides of the mechanical seal housing 5 .

[0025] Working Principle: When the mechanical seal structure in the mechanical seal housing 5 needs to be cleaned, it is only necessary to remove the seal on the first flushing port 8 along the second flushing port 10 and insert the seal flushing pipe along the second flushing port 10 and the first flushing port 8. Since the first flushing ports 8 are symmetrically opened on both sides of the mechanical seal housing 5, one side needs to be used as the liquid inlet and the other side as the liquid outlet. The seal flushing pipe connecting the two ports is connected to a cleaning liquid storage tank with a pump to carry out circulating cleaning.

[0026] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

[0027] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A cam rotor pump with double-end mechanical seals, comprising a pump body (1) and a housing (2), wherein a front cover is installed at the front end of the pump body (1), a bearing is installed in the housing (2), and the rear end of the housing (2) is fixed by a gland, wherein a driving shaft and a driven shaft matched by synchronous gears are provided in the pump body (1) and the housing (2), and rotors are provided on the driving shaft and the driven shaft, and characterized in that: The pump body (1) and the box body (2) are connected via a partition (9); A mechanical seal housing (5) is provided in the pump body (1), a front mechanical seal (6) and a rear mechanical seal (7) are provided in the mechanical seal housing (5), and a first flushing port (8) is also provided on the mechanical seal housing (5).

2. The cam rotor pump with double end mechanical seal according to claim 1, characterized in that: A second flushing port (10) is provided on the side wall of the partition (9), and the position of the second flushing port (10) corresponds to that of the first flushing port (8).

3. The cam rotor pump with double-end mechanical seal according to claim 1, characterized in that: A sewage outlet (11) is symmetrically provided at the bottom of the partition (9).

4. The cam rotor pump with double mechanical seals according to claim 1, characterized in that: A first positioning cover (3) is provided between the partition (9) and the box body (2); and a second positioning cover (4) is provided between the pump body (1) and the partition (9).

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