Heat insulator for diaphragm pump and diaphragm pump

Abstract

The utility model belongs to the technical field of diaphragm pumps, and discloses a heat insulator for a diaphragm pump and the diaphragm pump. The heat insulator for the diaphragm pump comprises a shell, a guide rod, a dissociator and two elastic pieces. The shell is provided with a piston cavity. The guide rod is arranged in the piston cavity; the dissociator is slidably sleeved on the guide rod; the two elastic pieces are arranged at the two ends of the guide rod respectively, and when the dissociator moves to the end of the guide rod and makes contact with the elastic pieces, the dissociator compresses the elastic pieces to buffer impact of the dissociator. When the heat insulator is applied to the diaphragm pump, the dissociator can slide back and forth along the guide rod. When the dissociator moves to the end part of the guide rod, the dissociator compresses the elastic piece, so that the elastic piece deforms to buffer the impact of the dissociator, the impact strength of the dissociator when moving to the end part of the guide rod is effectively reduced, the dissociator is prevented from being damaged due to frequent violent impact, and the service life of the dissociator is effectively prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to diaphragm pump technical field especially diaphragm pump heat insulator and diaphragm pump. BACKGROUND

[0002] In the high-pressure acid leaching process of laterite nickel ore, the ore pulp needs to be preheated before being injected into a high-pressure reaction kettle for reaction after being cleaned and thickened, and a diaphragm pump is usually used to deliver the preheated ore pulp to the high-pressure reaction kettle.

[0003] In the prior art, the diaphragm pump is provided with a heat insulator, and a spacer is mounted on a guide rod in the heat insulator. The spacer reciprocates with the piston of the diaphragm pump and plays a role of isolation and heat insulation under the driving of high-temperature slurry. However, when the spacer moves to the end of the piston, it is easy to hit the rod head bolt, causing the inner sleeve of the spacer to be damaged, which in turn damages other components, so that the spacer cannot play a role of heat insulation and the service life is reduced.

[0004] Therefore, how to prolong the service life of the spacer is a technical problem to be solved. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a diaphragm pump heat insulator and diaphragm pump, solving the problem that the spacer is easy to collide with the rod head bolt during movement and is damaged in the prior art, resulting in a short service life of the spacer.

[0006] To achieve this purpose, the utility model adopts the following technical solutions:

[0007] In a first aspect, the utility model provides a diaphragm pump heat insulator, which comprises:

[0008] A housing having a piston cavity;

[0009] A guide rod arranged in the piston cavity;

[0010] A spacer slidingly sleeved on the guide rod;

[0011] Two elastic members, the two elastic members are arranged at both ends of the guide rod, and when the spacer moves to the end of the guide rod and contacts the elastic member, the spacer compresses the elastic member to buffer the impact of the spacer.

[0012] Optionally, the housing has a mounting portion, the elastic member includes a sleeve ring and a first spring, one end of the guide rod is fixed to the mounting portion, the sleeve ring is slidingly sleeved on the guide rod, one end of the first spring is connected to the sleeve ring, and the other end of the first spring is connected to the mounting portion, and the first spring has an elastic force for pushing the sleeve ring to approach the spacer.

[0013] Optionally, the mounting portion is provided with a mounting hole, and the guide rod is arranged in the mounting hole and fixedly connected with the mounting portion.

[0014] Optionally, the sleeve ring is a ceramic sleeve ring.

[0015] Optionally, the elastic member comprises a second spring, one end of the second spring is connected with the shell, and when the free device moves to the end of the guide rod, the free device compresses the other end of the second spring to buffer the impact of the free device.

[0016] Optionally, the shell further comprises a supporting portion, one end of the guide rod is arranged in the supporting portion, and one end of the second spring is connected with the supporting portion.

[0017] Optionally, the free device comprises an inner sleeve and an outer sleeve, the inner sleeve is sleeved on the guide rod, and the outer sleeve is sleeved on the outer periphery of the inner sleeve.

[0018] Optionally, a buffer pad is arranged on the side of the free device close to the elastic member.

[0019] Optionally, the buffer pad is a rubber buffer pad.

[0020] In a second aspect, the utility model also provides a diaphragm pump, which comprises:

[0021] a pump body;

[0022] a discharge valve arranged in the pump body;

[0023] The heat insulator for the diaphragm pump is fixedly connected with the discharge valve.

[0024] The utility model has the advantages of:

[0025] The guide rod is arranged in the piston cavity, and the free device is sleeved on the guide rod, so that the free device can reciprocate in the piston cavity. When the heat insulator is applied to the diaphragm pump, the free device can reciprocate along the guide rod. When the free device moves to the end of the guide rod, the free device compresses the elastic member, so that the elastic member deforms to buffer the impact of the free device, thereby effectively reducing the impact intensity of the free device when moving to the end of the guide rod, avoiding the free device from being frequently subjected to violent impact and being damaged, and effectively prolonging the service life of the free device. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 is a structure diagram of the heat insulator for the diaphragm pump provided by the utility model.

[0027] In the drawings:

[0028] 100, housing; 110, piston cavity; 120, mounting portion; 121, mounting hole; 130, support portion; 200, guide rod; 300, float; 310, inner sleeve; 320, outer sleeve; 330, buffer pad; 400, elastic member; 410, collar; 420, first spring; 430, second spring. DETAILED DESCRIPTION

[0029] The utility model will be described in further detail below in combination with the drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the utility model and are not limited to the utility model. In addition, it should be noted that only the parts related to the utility model are shown in the drawings for the convenience of description, not all the structures.

[0030] In the description of the utility model, unless otherwise explicitly specified and limited, the terms "connected", "connected", "fixed" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship of two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0031] In the utility model, unless otherwise explicitly specified and limited, the first feature "on" or "below" the second feature can include that the first and second features are in direct contact, or the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the first feature "on", "above" and "on" the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature includes that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0032] In the description of the embodiment, the terms "up", "down", "left", "right" and other orientation or position relationship are based on the orientation or position relationship shown in the drawings, only for the convenience of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, therefore it cannot be understood as a limitation of the utility model. In addition, the terms "first", "second" are only used to distinguish in description, and have no special meaning.

[0033] In order to solve the technical problem of how to prolong the service life of the float, the utility model provides a heat insulator for diaphragm pump and diaphragm pump, which can buffer the impact of the float, so as to effectively prolong the service life of the float.

[0034] It should be noted that the heat insulation device for diaphragm pumps of this utility model is used, but not limited to, inside diaphragm pumps. For ease of explanation, this utility model only uses the application of the heat insulation device for diaphragm pumps as an example. The principle of the heat insulation device for diaphragm pumps applied to other types of equipment is essentially the same as that applied to diaphragm pumps, and will not be described in detail here.

[0035] Please see Figure 1 , Figure 1 This is a schematic diagram of the structure of the heat insulator for the diaphragm pump in this embodiment of the present invention. The heat insulator for the diaphragm pump includes a housing 100, a guide rod 200, a free element 300, and two elastic elements 400. The housing 100 has a piston chamber 110. The guide rod 200 is mounted in the piston chamber 110. The free element 300 is slidably sleeved on the guide rod 200. The two elastic elements 400 are respectively disposed at both ends of the guide rod 200. When the free element 300 moves to the end of the guide rod 200 and contacts the elastic element 400, the free element 300 compresses the elastic element 400 to buffer the impact of the free element 300.

[0036] Specifically, the housing 100 is elongated and hollow to form a piston chamber 110. A guide rod 200 extends along the length of the housing 100, and both ends of the guide rod 200 are fixedly connected to the housing 100. A freewheeling device 300 is fitted at the middle of the guide rod 200, and the freewheeling device 300 can slide back and forth along the axial direction of the guide rod 200. An elastic element 400 is provided at each end of the guide rod 200. The elastic element 400 can be composed of a spring, elastic rod, or elastic pad, etc., and is fixedly connected to the guide rod 200 to ensure that the elastic element 400 only deforms and does not displace when compressed by the freewheeling device 300. The fixing method described above can be a non-removable method such as welding, or a detachable connection such as a threaded connection or a snap-fit ​​connection.

[0037] By placing the guide rod 200 within the piston chamber 110, the freewheeling device 300 is slidably sleeved on the guide rod 200, allowing the freewheeling device 300 to reciprocate within the piston chamber 110. When this heat shield is applied to a diaphragm pump, the freewheeling device 300 can reciprocate along the guide rod 200. When the freewheeling device 300 moves to the end of the guide rod 200, it compresses the elastic element 400, causing the elastic element 400 to deform and buffer the impact of the freewheeling device 300. This effectively reduces the impact intensity experienced by the freewheeling device 300 when it moves to the end of the guide rod 200, preventing the freewheeling device 300 from being frequently subjected to severe impacts and thus extending its service life.

[0038] In some embodiments, the housing 100 has a mounting portion 120, the elastic element 400 includes a collar 410 and a first spring 420, one end of the guide rod 200 is fixed to the mounting portion 120, the collar 410 is slidably sleeved on the guide rod 200, one end of the first spring 420 is connected to the collar 410, and the other end is connected to the mounting portion 120, and the first spring 420 has a spring force that pushes the collar 410 closer to the detacher 300.

[0039] Specifically, the mounting part 120 is block-shaped, and its outer side wall is fixedly connected to the inner side wall of the housing 100. A mounting hole 121 is provided in the middle of the mounting part 120, and one end of the guide rod 200 passes through the mounting hole 121. A retaining plate is also provided at the end of the guide rod 200 passing through the mounting hole 121, thus forming a fixed connection between the guide rod 200 and the mounting hole 121. This fixed connection can be achieved through interference fit, welding, or bonding, or through screwing or snap-fitting.

[0040] The present invention does not specifically limit the shape of the mounting part 120 or the fixed connection method between the mounting part 120 and the housing 100. As long as the guide rod 200 can be fixed, the implementation method of the mounting part 120 is feasible.

[0041] A first spring 420 is provided on the side of the mounting part 120 near the ionizer 300. The first spring 420 can be wound around the outside of the guide rod 200, such that the axis of the first spring 420 is collinear with the axis of the guide rod 200. Alternatively, the first spring 420 can be provided separately on the outside of the guide rod 200, such that the axis of the first spring 420 is parallel to the axis of the guide rod 200 but not collinear. In this case, multiple first springs 420 can be distributed at equal angular intervals around the circumference of the guide rod 200. A collar 410 is fixedly provided at the end of the first spring 420 away from the mounting part 120. The collar 410 has a sliding hole in the middle, through which the guide rod 200 passes. The diameter of the sliding hole is larger than the diameter of the guide rod 200, so that the collar 410 can slide relative to the axial direction of the guide rod 200.

[0042] In this embodiment, since the guide rod 200 passes through the mounting hole 121, the limiting effect of the inner wall of the mounting hole 121 can effectively prevent the guide rod 200 from moving radially, thereby fixing the guide rod 200. When the detacher 300 reaches the end of the guide rod 200, the detacher 300 will press against the collar 410 and push the collar 410 closer to the mounting part 120 and squeeze the first spring 420. During the movement, the collar 410 will overcome the elastic force of the first spring 420, thereby buffering the detacher 300. It should be understood that the first spring 420 can also be replaced by an elastic rod or other structures.

[0043] In some embodiments, the collar 410 is a ceramic collar 410.

[0044] In this embodiment, the ceramic collar 410 is heat-resistant, which can prevent the collar 410 from undergoing significant deformation due to thermal expansion and contraction in high-temperature working environments. It should be understood that the collar 410 can also be made of other materials, as long as it can adapt to the corresponding working environment and form a safe contact with the ionizer 300. This utility model does not limit this.

[0045] In some embodiments, the elastic element 400 includes a second spring 430, one end of which is disposed in the housing 100. When the freewheel 300 moves to the end of the guide rod 200, the freewheel 300 compresses the other end of the second spring 430 to cushion the impact of the freewheel 300.

[0046] Specifically, one end of the second spring 430 is fixedly connected to the housing 100, while the other end is free, allowing the freewheeling device 300 to directly contact the second spring 430 when it moves to the end of the guide rod 200. The second collar 410 can be sleeved on the guide rod 200, or multiple collars can be evenly spaced around the second guide rod 200. In this embodiment, the second spring 430 is sleeved on the guide rod 200, and the elastic element 400 at one end of the guide rod 200 uses the second spring 430, while the elastic element 400 at the other end uses the first spring 420 and the collar 410. It should be understood that the second spring 430 can be used as an alternative to the first spring 420 and the collar 410; that is, the elastic element 400 can be formed by providing the second spring 430 at both ends of the guide rod 200, or by providing the first spring 420 and the collar 410 at both ends of the guide rod 200. This invention does not limit this approach.

[0047] In this embodiment, when the ionizer 300 moves to the end of the guide rod 200, the ionizer 300 will directly compress the free end of the second spring 430. As the second spring 430 deforms and the elastic force gradually increases, the movement of the ionizer 300 can be effectively buffered, thereby reducing the impact intensity of the ionizer 300.

[0048] In some embodiments, the housing 100 further includes a support portion 130, one end of the guide rod 200 is mounted on the support portion 130, and one end of the second spring 430 is connected to the support portion 130.

[0049] Specifically, a support portion 130 is fixedly disposed inside the housing 100. The support portion 130 is disposed opposite to the mounting portion 120. The arrangement of the support portion 130 can be similar to that of the mounting portion 120. However, in this embodiment, the support portion 130 is disposed on the end face of the housing 100, and its size is smaller than that of the mounting portion 120 to reduce the overall weight. A hole is provided in the middle of the support portion 130 to allow one end of the guide rod 200 to be inserted into the support portion 130, and the guide rod 200 is fixedly connected to the support plate. One end of the second spring 430 is fixedly connected to the side of the support portion 130 facing the mounting portion 120. The above-mentioned fixed connection can be achieved by interference fit, welding, or bonding, or by screwing or snap-fitting.

[0050] In this embodiment, the support part 130 is used to fix the guide rod 200 to ensure that the guide rod 200 can be stably fixed in the piston cavity 110. On the other hand, it can provide space for the second spring 430 so that the second spring 430 can be installed and fixed smoothly, and ensure that the second spring 430 can play a supporting role when it is squeezed by the freewheel 300, so that the second spring 430 can only deform and not deflect.

[0051] In some embodiments, the detacher 300 includes an inner sleeve 310 and an outer sleeve 320, with the inner sleeve 310 fitted onto the guide rod 200 and the outer sleeve 320 fitted onto the outer periphery of the inner sleeve 310.

[0052] Specifically, the inner sleeve 310 is cylindrical, with protruding annular pedestals at both ends, giving it an "I"-shaped cross-section. The inner wall of the inner sleeve 310 slides against the outer wall of the guide rod 200, meaning the inner diameter of the inner sleeve 310 is slightly larger than the diameter of the guide rod 200. A lubricating layer, such as a smooth film or lubricating oil, can be provided between the inner sleeve 310 and the guide rod 200 to reduce friction and wear during reciprocating sliding. An outer sleeve 320 is fitted around the inner sleeve 310, and the two are fixedly connected. The fixing method can be interference fit, welding, bonding, snap-fit, or bolt connection. The outer diameter of the outer sleeve 320 is smaller than the inner diameter of the housing 100, creating a gap between the outer sleeve 320 and the inner side of the housing 100, thus preventing friction between the outer sleeve 320 and the housing 100 during sliding.

[0053] In this embodiment, the inner sleeve 310 is slidably sleeved on the guide rod 200, while the outer sleeve 320 is installed on the outer periphery of the inner sleeve 310. The inner sleeve 310 plays the role of sliding and support, while the outer sleeve 320 is usually made of heat insulation material.

[0054] In some embodiments, a cushioning pad 330 is provided on the side of the detacher 300 near the elastic member 400.

[0055] Specifically, the buffer pad 330 can be directly fixed to the end face of the inner sleeve 310, and the fixing method can be adhesive bonding. The buffer pad 330 can be a rubber buffer pad 330, or it can be made of other flexible materials. Any flexible buffer pad 330 that can provide cushioning is acceptable.

[0056] In this embodiment, since the two buffer pads 330 are respectively laid at both ends of the inner sleeve 310, when the free device 300 moves to the end of the guide rod 200, the buffer pads 330 will make direct contact with the second spring 430 or the collar 410. On the one hand, not only can the elastic element 400 play a buffering role, but the buffer pads 330 can also play a buffering role, further improving the buffering effect; on the other hand, it can also prevent the inner sleeve 310 from directly contacting the elastic element 400, thereby further improving the protection effect on the free device 300.

[0057] In addition, this utility model also provides a diaphragm pump, including a pump body, a discharge valve, and a heat insulator for the diaphragm pump as described above. The discharge valve is disposed on the pump body; the housing 100 of the heat insulator for the diaphragm pump is fixedly connected to the discharge valve.

[0058] Specifically, the discharge valve is a key device for the diaphragm pump to suck and discharge slurry, and the housing 100 of the heat insulator is fixedly connected to the discharge valve. When slurry is sucked in or discharged from the discharge valve, the free element 300 inside the heat insulator can slide accordingly to achieve the functions of isolation and heat insulation.

[0059] To better understand this utility model, the following is combined with... Figure 1 The technical solution of this utility model is described in detail below:

[0060] The guide rod 200 is mounted inside the piston chamber 110, and the freewheeling device 300 is slidably sleeved on the guide rod 200, ensuring that the freewheeling device 300 can reciprocate within the piston chamber 110. During the operation of the diaphragm pump, the freewheeling device 300 will reciprocate along the guide rod 200. When the freewheeling device 300 reaches one end of the guide rod 200, it will press against the collar 410 and push the collar 410 to move. The movement of the collar 410 overcomes the elastic force of the first spring 420, thereby buffering the freewheeling device 300. When the freewheeling device 300 moves to the other end of the guide rod 200, it compresses the second spring 430 to buffer the impact of the freewheeling device 300. Because the impact of the freewheeling device 300 is buffered by the elastic element 400, the freewheeling device 300 is prevented from being damaged by frequent and severe impacts, thus extending the service life of the freewheeling device 300.

[0061] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A heat insulator for a diaphragm pump, characterized in that, include: The housing (100) has a piston chamber (110); A guide rod (200) is disposed within the piston chamber (110); The detacher (300) is slidably sleeved on the guide rod (200); Two elastic elements (400) are respectively disposed at both ends of the guide rod (200). When the detacher (300) moves to the end of the guide rod (200) and contacts the elastic element (400), the detacher (300) compresses the elastic element (400) to buffer the impact of the detacher (300).

2. The heat insulator for a diaphragm pump according to claim 1, characterized in that, The housing (100) has a mounting portion (120), the elastic element (400) includes a collar (410) and a first spring (420), one end of the guide rod (200) is fixed to the mounting portion (120), the collar (410) is slidably sleeved on the guide rod (200), one end of the first spring (420) is connected to the collar (410), and the other end is connected to the mounting portion (120), the first spring (420) has an elastic force that pushes the collar (410) closer to the detacher (300).

3. The heat insulator for a diaphragm pump according to claim 2, characterized in that, The mounting part (120) has a mounting hole (121), and the guide rod (200) passes through the mounting hole (121) and is fixedly connected to the mounting part (120).

4. The heat insulator for a diaphragm pump according to claim 2, characterized in that, The collar (410) is a ceramic collar (410).

5. The heat insulator for a diaphragm pump according to claim 1, characterized in that, The elastic element (400) includes a second spring (430), one end of which is connected to the housing (100). When the freewheel (300) moves to the end of the guide rod (200), the freewheel (300) compresses the other end of the second spring (430) to cushion the impact of the freewheel (300).

6. The heat insulator for a diaphragm pump according to claim 5, characterized in that, The housing (100) further includes a support (130), one end of the guide rod (200) is mounted on the support (130), and one end of the second spring (430) is connected to the support (130).

7. The heat insulator for a diaphragm pump according to claim 1, characterized in that, The detacher (300) includes an inner sleeve (310) and an outer sleeve (320), the inner sleeve (310) is fitted onto the guide rod (200), and the outer sleeve (320) is fitted onto the outer periphery of the inner sleeve (310).

8. The heat insulator for a diaphragm pump according to any one of claims 1-7, characterized in that, A buffer pad (330) is provided on the side of the detacher (300) near the elastic member (400).

9. The heat insulator for a diaphragm pump according to claim 8, characterized in that, The buffer pad (330) is a rubber buffer pad (330).

10. A diaphragm pump, characterized in that, include: Pump body; The discharge valve is located on the pump body; The heat insulator for a diaphragm pump as described in any one of claims 1-9, wherein the housing of the heat insulator is fixedly connected to the discharge valve.

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