Double-end-face mechanical seal rotor pump for chemical raw materials

Abstract

The utility model discloses a double-end-face mechanical seal rotor pump for chemical raw materials. The double-end-face mechanical seal rotor pump comprises a rotor pump body. The symmetrically arranged shaft bodies are arranged in the rotor pump main body; the sealing block is arranged at the position, corresponding to the shaft body, in the rotor pump main body; dust-proof sleeves are symmetrically arranged at the positions, close to the sealing blocks, of the outer side of the shaft body, vertical plates are symmetrically connected to the sides, close to the dust-proof sleeves, of the rotor pump body and correspond to the dust-proof sleeves, and first springs are connected between the vertical plates and the dust-proof sleeves; after the external connection ring moves to the position attached to the vertical plate, the second positioning groove corresponds to the positioning rod, at the moment, the positioning rod is loosened, and the positioning rod is reset and clamped in the second positioning groove under the action of the arc-shaped spring, so that the dustproof sleeve is fixed at the position far away from the shaft body and the sealing block; the sealing block or the shaft body can be dismounted, maintained or replaced without rotating the screw rod all the time to enable the dustproof seat to be far away from the driving shaft, so that the working efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to rotor pump technical field, specifically relates to a double end face mechanical seal rotor pump for chemical raw materials. BACKGROUND

[0002] Chemical raw materials are raw materials produced by chemical methods, used for producing various preparations, are effective components in preparations, prepared by chemical synthesis, plant extraction or biotechnology, and mainly include inorganic chemical products and high polymer material manufacturing products in organic synthesis industry

[0003] The rotor pump for chemical raw materials is a fluid conveying equipment, which can make the liquid in the pump cavity periodically change through the relative movement between the rotor and the pump shell, so that the liquid conveying purpose is achieved. It is widely used in chemical industry and can efficiently and stably convey various chemical raw materials.

[0004] The patent CN222025962U discloses a rotor pump mechanical sealing device, which can prevent dust from adhering to the driving shaft and the sealing ring II, and prevent dust from adhering to the sealing part. Although the device can prevent dust from adhering to the position of the driving shaft and the sealing ring II, in actual use, the driving shaft and the sealing mechanism need to be disassembled for maintenance or replacement after a period of use. Before the driving shaft and the sealing mechanism are disassembled, the dustproof seat needs to be moved away from the driving shaft and the sealing mechanism. Moving the dustproof seat requires the worker to continuously rotate the driving handle, so that the lead screw drives the dustproof seat away from the driving shaft and the sealing mechanism. In actual operation, a large amount of time is consumed, and the work efficiency is reduced. UTILITY MODEL CONTENTS

[0005] To solve the technical problem of low efficiency when moving the dustproof seat away from the driving shaft and the sealing mechanism, the utility model provides a double end face mechanical seal rotor pump for chemical raw materials.

[0006] The purpose of the utility model can be achieved through the following technical solutions:

[0007] A double end face mechanical seal rotor pump for chemical raw materials, comprising a rotor pump main body, symmetrically arranged shaft bodies arranged in the rotor pump main body, sealing blocks arranged in the rotor pump main body corresponding to the positions of the shaft bodies, dustproof sleeves symmetrically arranged at the positions of the shaft bodies close to the sealing blocks, and vertical plates symmetrically arranged at the positions corresponding to the dustproof sleeves on the side of the rotor pump main body close to the dustproof sleeves, wherein the first springs are connected between the vertical plates and the dustproof sleeves; a pull rod is connected to the side of the dustproof sleeve close to the spring, and the pull rod penetrates the vertical plate; a positioning rod is rotationally connected to the side of the vertical plate away from the dustproof sleeve corresponding to the position of the pull rod; a first positioning groove is formed in the position of the pull rod corresponding to the positioning rod, and the positioning rod is clamped in the first positioning groove; a second positioning groove is formed in the middle of the pull rod, and the positioning rod is clamped and matched with the second positioning groove.

[0008] Preferably, the inner surface of the dust cover is attached to the outer surface of the shaft body.

[0009] Preferably, the end of the positioning rod close to the pull rod is spoon-shaped.

[0010] Preferably, the outer side of the pull rod is connected with the outer connecting ring at the position corresponding to the second positioning groove.

[0011] Preferably, the side of the positioning rod away from the pull rod is connected with a first sleeve of arc shape, the vertical plate is connected with a second sleeve of arc shape at the position corresponding to the first sleeve, the first sleeve is slidingly connected in the second sleeve, an arc-shaped spring is connected between the positioning rod and the second sleeve, and the arc-shaped spring is located in the first sleeve and the second sleeve.

[0012] Preferably, the first sleeve, the second sleeve and the arc-shaped spring are concentrically arranged with the rotation center of the positioning rod.

[0013] Preferably, the outer side of the rotor pump body is connected with a support ring at the position corresponding to the lower side of the sealing block, the lower side of the sealing block is connected with a limiting block at the position corresponding to the support ring, and the limiting block is slidingly connected in the support ring.

[0014] Preferably, the outer side of the rotor pump body is connected with a shell at the position corresponding to the upper side of the sealing block, a wedge-shaped block is slidingly connected in the shell, and a second spring is connected between the shell and the wedge-shaped block.

[0015] Preferably, the upper side of the side of the wedge-shaped block away from the rotor pump body is connected with a push block, the shell is provided with a movable slot at the position corresponding to the push block, and the push block is slidingly connected in the movable slot.

[0016] Preferably, a plurality of uniformly arranged screw rods are threadedly connected between the sealing block and the rotor pump body.

[0017] The utility model discloses the beneficial effect of:

[0018] The dust cover is pressed tightly on the outer surface of the shaft body through cooperation of the vertical plate and the first spring, the dust cover is positioned at the position of the sealing block, the positioning rod is clamped in the first positioning groove, the position of the dust cover is fixed, displacement of the dust cover is avoided, dust entering the sealing position of the shaft body and the rotor pump body is avoided, and the service life of the sealing block is improved; when the sealing block or the shaft body needs to be removed, maintained or replaced, the positioning rod is respectively pushed, the positioning rod is rotated away from the first positioning groove, the first sleeve slides into the second sleeve during rotation of the positioning rod, the positioning rod extrudes the arc-shaped spring, the arc-shaped spring is contracted and stores restoring force after being extruded, the positioning rod is away from the first positioning groove, the pull ring is pulled, the pull rod and the dust cover are moved away from the shaft body, the pull rod moves the outer connecting ring during movement, the second positioning groove corresponds to the positioning rod when the outer connecting ring moves to the position of abutting against the vertical plate, the positioning rod is released at this time, the positioning rod is reset and clamped in the second positioning groove under the action of the arc-shaped spring, the dust cover is fixed at the position away from the shaft body and the sealing block, the sealing block or the shaft body can be removed, maintained or replaced, the dust cover does not need to be always rotated away from the driving shaft, and the working efficiency is improved.

[0019] When the sealing block is installed, the sealing block is placed into the position of the sealing groove of the rotor pump body, and the limiting block is inserted into the supporting ring, so that the installation position of the sealing block is determined, the sealing block contacts the wedge-shaped block and extrudes the wedge-shaped block during insertion of the limiting block into the supporting ring, the wedge-shaped block slides into the shell after being extruded, the wedge-shaped block extrudes the second spring during sliding, the second spring is contracted and stores restoring force after being extruded, the sealing block passes the wedge-shaped block after abutting against the rotor pump body, so that the wedge-shaped block is no longer extruded, the wedge-shaped block is reset under the action of the restoring force of the second spring after losing the extrusion force, the wedge-shaped block is blocked after being reset in cooperation with the support of the supporting ring, the sealing block is preliminarily fixed at this time, the sealing block is connected with the rotor pump body through cooperation of the screw rod, and the sealing block is fixed, the sealing block does not displace before being fixed by the screw rod, and the sealing block does not cause trouble in fixing. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical scheme of the embodiments of the utility model, the following will be briefly introduced the drawings needed to be used in the embodiment, obviously, the drawings in the following description only some embodiments of the utility model, for those skilled in the art, under the premise of not paying creative labor, other drawings can also be obtained according to these drawings.

[0021] Figure 1 It is a perspective view of a double-end-face mechanical sealing rotor pump for chemical raw materials of the utility model;

[0022] Figure 2 It is a front view of the double-end-face mechanical seal rotor pump for chemical raw materials;

[0023] Figure 3 It is a sectional view of the double-end-face mechanical seal rotor pump for chemical raw materials;

[0024] Figure 4 It is Figure 3 It is a local enlarged view of A in the middle;

[0025] Figure 5 It is a perspective view of the dustproof sleeve in the double-end-face mechanical seal rotor pump for chemical raw materials;

[0026] Figure 6 It is a perspective view of the pull rod in the double-end-face mechanical seal rotor pump for chemical raw materials;

[0027] Figure 7 It is a sectional view of the first sleeve in the double-end-face mechanical seal rotor pump for chemical raw materials.

[0028] In the drawings, the components represented by each reference numeral are listed as follows:

[0029] 1, rotor pump main body; 2, dustproof sleeve; 3, first sleeve; 4, support ring;

[0030] 11, shaft body; 12, sealing block;

[0031] 21, vertical plate; 22, first spring; 23, pull rod; 24, pull block; 25, positioning rod; 26, first positioning groove; 27, second positioning groove; 28, external ring;

[0032] 31, second sleeve; 32, circular arc spring;

[0033] 41, limiting block; 42, shell; 43, wedge block; 44, third spring; 45, push block; 46, movable groove; 47, screw rod. DETAILED DESCRIPTION

[0034] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

[0035] Please refer to Figure 1 - Figure 7As shown, a double-end-face mechanical seal rotor pump for chemical raw materials, comprising a rotor pump body 1, the rotor pump body 1 is provided with symmetrically arranged shaft body 11, the position corresponding to the shaft body 11 in the rotor pump body 1 is provided with sealing block 12, the sealing block 12 is used for sealing the shaft body 11.

[0036] The outer side of the rotor pump body 1 corresponds to the position below the sealing block 12 and is connected with a support ring 4 respectively, the support ring 4 is used for supporting the sealing block 12, avoiding the displacement of the sealing block 12 before fixing.

[0037] The position corresponding to the support ring 4 below the sealing block 12 is connected with a limiting block 41, the limiting block 41 is slidingly connected in the support ring 4, and the limiting ring is used for determining the installation position of the sealing block 12.

[0038] The outer side of the rotor pump body 1 corresponds to the position above the sealing block 12 and is connected with a shell 42 respectively, the shell 42 is slidingly connected with a wedge block 43, the wedge block 43 is used for blocking the sealing block 12, avoiding the displacement of the sealing block 12 before fixing.

[0039] The second spring 44 is connected between the shell 42 and the wedge block 43, and the second spring 44 is used for resetting the wedge block 43.

[0040] The upper side of the side away from the rotor pump body 1 of the wedge block 43 is connected with a push block 45, the push block 45 is used for pushing the wedge block 43, so that the wedge block 43 enters the shell 42.

[0041] The position corresponding to the push block 45 of the shell 42 is provided with a movable groove 46, the push block 45 is slidingly connected in the movable groove 46, and the movable groove 46 is set to make the push block 45 move.

[0042] The sealing block 12 and the rotor pump body 1 are threadedly connected with a plurality of uniformly arranged screw rods 47, the screw rod 47 is used for fixing the sealing block 12 on the rotor pump body 1.

[0043] In specific use, when the sealing block 12 is installed, the sealing block 12 is put into the position of the sealing groove of the rotor pump body 1 in alignment, and the limiting block 41 is inserted into the supporting ring 4, so that the installation position of the sealing block 12 is determined. In the process of inserting the limiting block 41 into the supporting ring 4, the sealing block 12 will contact and extrude the wedge-shaped block 43, the wedge-shaped block 43 will slide into the shell 42 under extrusion, and the wedge-shaped block 43 will extrude the second spring 44 in the process of sliding, and the second spring 44 will contract under extrusion and store the restoring force. After the sealing block 12 is attached to the rotor pump body 1, the sealing block 12 will pass the wedge-shaped block 43 so as not to extrude the wedge-shaped block 43 any more. After the wedge-shaped block 43 loses the extrusion force, the wedge-shaped block 43 will reset under the action of the restoring force of the second spring 44. After the wedge-shaped block 43 resets, the wedge-shaped block 43 will block the sealing block 12 in cooperation with the support of the supporting ring 4. At this time, the sealing block 12 is preliminarily fixed. The sealing block 12 can be fixed by connecting the sealing block 12 and the rotor pump body 1 through the cooperation of the screw rod 47. The sealing block 12 will not be displaced before being fixed by the screw rod 47, and will not cause trouble to the fixing.

[0044] The dust cover 2 is arranged symmetrically on the outer side of the shaft body 11 close to the sealing block 12, and is used for isolating dust to avoid the dust entering the sealing position of the shaft body 11 and the rotor pump body 1.

[0045] The inner surface of the dust cover 2 is attached to the outer surface of the shaft body 11. By this arrangement, better dustproof effect can be achieved.

[0046] The rotor pump body 1 is connected with the vertical plates 21 arranged symmetrically on the side close to the dust cover 2 and corresponding to the dust cover 2. The first spring 22 is connected between the vertical plates 21 and the dust cover 2, and is used for resetting the dust cover 2.

[0047] The dust cover 2 is connected with the pull rod 23 on the side close to the spring, and the pull rod 23 penetrates the vertical plates 21. The pull rod 23 is used for pulling the dust cover 2 away from the shaft body 11.

[0048] The pull rod 23 is connected with the pull ring on the end away from the dust cover 2. The pull ring is used for pulling the pull rod 23.

[0049] The positioning rod 25 is rotationally connected to the side of the vertical plate 21 away from the dust cover 2 and corresponding to the position of the pull rod 23. The end of the positioning rod 25 close to the pull rod 23 is spoon-shaped. The positioning rod 25 is used for fixing the position of the pull rod 23.

[0050] The first positioning slot 26 is arranged at a position corresponding to the positioning rod 25 on the pull rod 23, the positioning rod 25 is clamped in the first positioning slot 26, and the position of the dustproof sleeve 2 can be fixed after the dustproof sleeve 2 is attached to the outer side of the shaft body 11, so that the dustproof sleeve 2 is prevented from being displaced to cause dust to enter the sealing part of the shaft body 11 and the rotor pump body 1.

[0051] The second positioning slot 27 is arranged in the middle of the pull rod 23, the positioning rod 25 is clamped in the second positioning slot 27, and the second positioning slot 27 is used to fix the dustproof sleeve 2 when the dustproof sleeve 2 is away from the shaft body 11.

[0052] The outer connecting ring 28 is connected to a position corresponding to the second positioning slot 27 on the outer side of the pull rod 23, and the outer connecting ring 28 is used to determine the corresponding position of the second positioning slot 27 and the positioning rod 25.

[0053] The first sleeve 3 in the shape of a circular arc is connected to a side of the positioning rod 25 away from the pull rod 23, the second sleeve 31 in the shape of a circular arc is connected to a position corresponding to the first sleeve 3 on the stand plate 21, the first sleeve 3 is slidingly connected in the second sleeve 31, and the first sleeve 3 and the second sleeve 31 are used to limit the position of the circular-arc-shaped spring 32.

[0054] The circular-arc-shaped spring 32 is connected between the positioning rod 25 and the second sleeve 31, the circular-arc-shaped spring 32 is located in the first sleeve 3 and the second sleeve 31, and the circular-arc-shaped spring 32 is used to reset the positioning rod 25.

[0055] The first sleeve 3, the second sleeve 31 and the circular-arc-shaped spring 32 are concentrically arranged with the rotation center of the positioning rod 25, and the first sleeve 3 can slide in the second sleeve 31 through this arrangement.

[0056] In specific use, the dustproof sleeve 2 can be pressed against the outer surface of the shaft body 11 through the cooperation of the stand plate 21 and the first spring 22, the dustproof sleeve 2 is arranged at the position of the sealing block 12, the positioning rod 25 is clamped in the first positioning slot 26, the position of the dustproof sleeve 2 is fixed, the dustproof sleeve 2 is prevented from being displaced, dust is prevented from entering the sealing part of the shaft body 11 and the rotor pump body 1, and the service life of the sealing block 12 is improved.

[0057] When the sealing block 12 or the shaft body 11 needs to be removed for maintenance or replacement, the positioning rod 25 is respectively pulled to rotate away from the first positioning groove 26, in the process of rotating, the first sleeve 3 will slide into the second sleeve 31, and the positioning rod 25 will extrude the circular-arc spring 32, the circular-arc spring 32 will shrink and store the restoring force after being extruded, after the positioning rod 25 rotates away from the first positioning groove 26, the pull ring is pulled to move the pull rod 23 and the dust cover 2 away from the shaft body 11, in the process of moving, the pull rod 23 will drive the external connecting ring 28 to move, when the external connecting ring 28 moves to the position of abutting against the vertical plate 21, the second positioning groove 27 will correspond to the positioning rod 25, at this time, the positioning rod 25 is loosened, under the action of the circular-arc spring 32, the positioning rod 25 will reset and be clamped in the second positioning groove 27, so that the dust cover 2 is fixed in the position away from the shaft body 11 and the sealing block 12, that is, the sealing block 12 or the shaft body 11 can be removed for maintenance or replacement, without rotating the screw rod to move the dust cover away from the driving shaft all the time, the working efficiency is improved.

[0058] In the description of the specification, the description of the terms "one embodiment", "example", "specific example" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are contained in at least one embodiment or example of the utility model. In the specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0059] The above is only an example and description of the structure of the utility model, the skilled in the art to the described specific embodiments make various modifications or supplements or adopt similar ways to replace, as long as not deviating from the structure of the utility model or beyond the scope defined by the present claims, should belong to the protection scope of the utility model.

Claims

1. A double-end-face mechanical seal rotor pump for chemical raw materials, comprising a rotor pump body (1); symmetrically arranged shaft bodies (11) arranged in the rotor pump body (1); a sealing block (12) arranged in the rotor pump body (1) at a position corresponding to the shaft body (11); characterized in that symmetrically arranged dust covers (2) are arranged outside the shaft body (11) at positions close to the sealing block (12), and symmetrically arranged vertical plates (21) are respectively connected to one side of the rotor pump body (1) close to the dust cover (2) and corresponding to the dust cover (2); a first spring (22) is connected between the vertical plate (21) and the dust cover (2); a pull rod (23) is connected to one side of the dust cover (2) close to the spring, and the pull rod (23) penetrates the vertical plate (21); a positioning rod (25) is rotationally connected to one side of the vertical plate (21) away from the dust cover (2) and corresponding to the pull rod (23); a first positioning groove (26) is formed in the pull rod (23) corresponding to the positioning rod (25); the positioning rod (25) is clamped in the first positioning groove (26); a second positioning groove (27) is formed in the middle of the pull rod (23); and the positioning rod (25) is clamped and matched with the second positioning groove (27).

2. A double mechanical seal rotor pump for chemical industry raw materials according to claim 1, characterized in that: The inner surface of the dust cover (2) is attached to the outer surface of the shaft body (11).

3. A double mechanical seal rotor pump for chemical industry raw materials as claimed in claim 2, wherein: One end of the positioning rod (25) close to the pull rod (23) is in the shape of a spoon.

4. A double mechanical seal rotor pump for chemical industry raw materials as claimed in claim 3, wherein: An outer connecting ring (28) is connected to the outside of the pull rod (23) corresponding to the second positioning groove (27).

5. A double mechanical seal rotor pump for chemical industry raw materials as claimed in claim 4, wherein: A first sleeve (3) in the shape of a circular arc is connected to one side of the positioning rod (25) away from the pull rod (23); a second sleeve (31) in the shape of a circular arc is connected to the vertical plate (21) corresponding to the first sleeve (3); the first sleeve (3) is slidingly connected in the second sleeve (31); an arc spring (32) is connected between the positioning rod (25) and the second sleeve (31); and the arc spring (32) is located in the first sleeve (3) and the second sleeve (31).

6. A double mechanical seal rotor pump for chemical industry raw materials as set forth in claim 5, characterized in that: The first sleeve (3), the second sleeve (31), and the arc spring (32) are concentrically arranged with the rotation center of the positioning rod (25).

7. A double mechanical seal rotor pump for chemical industry raw materials as defined in claim 6, characterized in that: Support rings (4) are respectively connected to the outside of the rotor pump body (1) corresponding to positions below the sealing block (12); limit blocks (41) are connected to positions below the sealing block (12) corresponding to the support rings (4); and the limit blocks (41) are slidingly connected in the support rings (4).

8. A double mechanical seal rotor pump for chemical industry raw materials as claimed in claim 7, wherein: Housings (42) are respectively connected to the outside of the rotor pump body (1) corresponding to positions above the sealing block (12); wedge-shaped blocks (43) are slidingly connected in the housings (42); and second springs (44) are connected between the housings (42) and the wedge-shaped blocks (43).

9. A double mechanical seal rotor pump for chemical industry raw materials as claimed in claim 8, wherein: A push block (45) is connected to the top of one side of the wedge-shaped block (43) away from the rotor pump body (1); a movable groove (46) is formed in the housing (42) corresponding to the push block (45); and the push block (45) is slidingly connected in the movable groove (46).

10. A double mechanical seal rotor pump for chemical industry raw materials as defined in claim 9, characterized in that: A plurality of uniformly arranged screw rods (47) are threadedly connected between the sealing block (12) and the rotor pump body (1).

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